@import"https://fonts.googleapis.com/css2?family=Chewy&family=Inter:wght@300;400;500;600;700;800&family=Poppins:wght@400;500;600;700&display=swap";@import"https://fonts.googleapis.com/css2?family=Jolly+Lodger&display=swap";:root{--color-primary: #0f766e;--color-primary-hover: #0b5f59;--color-primary-light: #34d399;--color-primary-dark: #115e59;--color-primary-light-alpha20: rgba(52, 211, 153, .2);--color-secondary: #14b8a6;--color-accent: #0f766e;--color-success: #10b981;--color-warning: #f59e0b;--color-danger: #ef4444;--color-error: #ef4444;--color-label-active: #ffffff;--color-on-accent: #03201d;--gradient-primary: linear-gradient(135deg, #14b8a6 0%, #0f766e 100%);--gradient-primary-hover: linear-gradient(135deg, #0f766e 0%, #0b5f59 100%);--color-primary-glow: rgba(20, 184, 166, .35);--bg-page: #061c1b;--bg-canvas: radial-gradient(1200px 800px at 14% -15%, rgba(20, 184, 166, .24), transparent 58%), radial-gradient(900px 700px at 95% 10%, rgba(15, 118, 110, .2), transparent 60%), linear-gradient(180deg, #073b3a 0%, #063230 38%, #052725 100%);--bg-surface: #0b2928;--bg-surface-hover: #103a37;--bg-card: #0b2928;--bg-input: #0d302e;--bg-input-focus: #12423e;--stage-bg: #0d302e;--stage-border: rgba(94, 234, 212, .16);--border-subtle: rgba(94, 234, 212, .16);--border-focus: rgba(94, 234, 212, .36);--border-error: #ff4444;--text-primary: #ffffff;--text-secondary: #b7d8d2;--text-muted: #83aaa3;--text-error: #ef4444;--text-success: #10b981;--shadow-card: none;--shadow-primary: none;--shadow-button: 0 4px 14px rgba(15, 118, 110, .28);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--transition-fast: .15s cubic-bezier(.16, 1, .3, 1);--transition-normal: .3s cubic-bezier(.16, 1, .3, 1);--transition-slow: .5s cubic-bezier(.16, 1, .3, 1);--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--space-7: 48px;--space-8: 64px;--space-9: 96px;--chat-content-max: 768px;--font-family: "Inter", system-ui, -apple-system, sans-serif;--accent-text: #5eead4;--accent-soft-text: #b7f7ec;--menu-option-text: #315c56;--menu-option-hover-text: #115e59;--overlay-faint: rgba(255, 255, 255, .03);--overlay-subtle: rgba(255, 255, 255, .05);--overlay-soft: rgba(255, 255, 255, .08);--overlay-medium: rgba(255, 255, 255, .12);--overlay-strong: rgba(255, 255, 255, .22);--navigation-hover-bg: var(--overlay-subtle);--navigation-hover-color: var(--text-primary);--border-faint: rgba(255, 255, 255, .1);--border-overlay: rgba(255, 255, 255, .15);--scrim: rgba(0, 0, 0, .5);--scrim-strong: rgba(0, 0, 0, .55);--hero-fade: rgba(15, 15, 25, .5);--popover-bg: rgba(13, 16, 23, .9);--shadow-popover: 0 10px 25px rgba(0, 0, 0, .4);--toast-shadow: 0 10px 30px rgba(0, 0, 0, .5), inset 0 1px 0 rgba(255, 255, 255, .05);--floating-shadow: 0 12px 30px rgba(0, 0, 0, .45);--sidebar-bg: rgba(4, 35, 33, .82);--navbar-bg: rgba(13, 13, 26, .85);--panel-glass-bg: rgba(12, 13, 20, .85);--card-tinted-bg: radial-gradient(circle at 100% 0%, rgba(20, 184, 166, .06) 0%, rgba(5, 28, 27, .9) 100%);--heading-solid: #ffffff;--divider-gradient: linear-gradient(90deg, rgba(255,255,255,0) 0%, rgba(255,255,255,.08) 50%, rgba(255,255,255,0) 100%);--label-active-glow: rgba(255, 255, 255, .2);--input-inset-shadow: inset 0 2px 4px rgba(0, 0, 0, .2);--code-bg: #061c1b;--scrollbar-thumb: rgba(94, 234, 212, .34);--chat-header-bg: linear-gradient(180deg, rgba(50, 6, 75, .9), rgba(43, 4, 68, .68));--chat-header-border: rgba(241, 173, 255, .2);--shadow-header: 0 10px 26px rgba(20, 0, 32, .35);--chat-title-text: #fdf6ff;--bubble-assistant-bg: linear-gradient(180deg, rgba(129, 43, 163, .56), rgba(97, 22, 133, .72));--bubble-assistant-text: #f9eaff;--bubble-assistant-border: rgba(250, 181, 255, .34);--bubble-assistant-shadow: inset 0 1px 0 rgba(255, 255, 255, .12), 0 8px 24px rgba(28, 0, 41, .4);--bubble-divider: rgba(255, 218, 255, .18);--accent-inline-strong: #ffd1ff;--danger-bubble-bg: rgba(80, 8, 25, .78);--danger-bubble-border: rgba(253, 130, 152, .45);--danger-bubble-text: #ffd8e0;--composer-placeholder: rgba(252, 230, 255, .75);--send-disabled-bg: rgba(255, 255, 255, .22);--send-disabled-text: rgba(255, 255, 255, .65);--accent-hover-fill: rgba(52, 211, 153, .18);--accent-hover-border: rgba(255, 193, 255, .5);--selected-border: rgba(20, 184, 166, .45);--selected-fill: rgba(20, 184, 166, .15);--pill-accent-bg: rgba(157, 78, 221, .15);--pill-accent-border: rgba(157, 78, 221, .3);--pill-accent-text: #E9D5FF;--pill-accent-hover-bg: rgba(157, 78, 221, .25);--auth-page-bg: radial-gradient(520px 320px at 50% 105%, rgba(52, 211, 153, .3), rgba(52, 211, 153, 0) 74%), radial-gradient(880px 700px at 15% -10%, rgba(20, 184, 166, .28), transparent 62%), linear-gradient(180deg, #064e49 0%, #08756b 45%, #075e58 100%);--auth-decor-icon: rgba(167, 243, 208, .5);--auth-heading-text: #d1fae5;--auth-body-text: #d5f5ed;--auth-label-text: #ffffff;--auth-link-text: #d1fae5;--auth-switch-text: #d5f5ed;--auth-switch-btn-text: #ecfdf5;--auth-social-bg: rgba(209, 250, 229, .18);--auth-social-border: rgba(167, 243, 208, .4);--auth-social-hover-bg: rgba(236, 253, 245, .26);--auth-input-bg: rgba(236, 253, 245, .95);--auth-input-border: rgba(167, 243, 208, .45);--auth-input-focus-bg: rgba(247, 255, 252, .98);--auth-placeholder: rgba(20, 83, 45, .56)}:root[data-theme=app]{--bg-page: #061c1b;--bg-canvas: radial-gradient(1200px 800px at 14% -15%, rgba(20, 184, 166, .24), transparent 58%), radial-gradient(900px 700px at 95% 10%, rgba(15, 118, 110, .2), transparent 60%), linear-gradient(180deg, #073b3a 0%, #063230 38%, #052725 100%);--bg-surface: #0b2928;--bg-surface-hover: #103a37;--bg-card: #0b2928;--bg-input: #0d302e;--bg-input-focus: #12423e;--stage-bg: #0d302e;--border-subtle: rgba(94, 234, 212, .16);--border-focus: rgba(94, 234, 212, .36);--stage-border: rgba(94, 234, 212, .16);--text-primary: #ffffff;--text-secondary: #b7d8d2;--text-muted: #83aaa3;--color-label-active: #ffffff;--color-on-accent: #03201d;--accent-text: #5eead4;--accent-soft-text: #b7f7ec;--menu-option-text: #315c56;--menu-option-hover-text: #115e59;--overlay-faint: rgba(255, 255, 255, .03);--overlay-subtle: rgba(255, 255, 255, .05);--overlay-soft: rgba(255, 255, 255, .08);--overlay-medium: rgba(255, 255, 255, .12);--overlay-strong: rgba(255, 255, 255, .22);--border-faint: rgba(255, 255, 255, .1);--border-overlay: rgba(255, 255, 255, .15);--scrim: rgba(0, 0, 0, .5);--scrim-strong: rgba(0, 0, 0, .55);--hero-fade: rgba(15, 15, 25, .5);--popover-bg: rgba(13, 16, 23, .9);--shadow-popover: 0 10px 25px rgba(0, 0, 0, .4);--toast-shadow: 0 10px 30px rgba(0, 0, 0, .5), inset 0 1px 0 rgba(255, 255, 255, .05);--floating-shadow: 0 12px 30px rgba(0, 0, 0, .45);--sidebar-bg: rgba(4, 35, 33, .82);--navbar-bg: rgba(13, 13, 26, .85);--panel-glass-bg: rgba(12, 13, 20, .85);--card-tinted-bg: radial-gradient(circle at 100% 0%, rgba(20, 184, 166, .06) 0%, rgba(5, 28, 27, .9) 100%);--heading-solid: #ffffff;--divider-gradient: linear-gradient(90deg, rgba(255,255,255,0) 0%, rgba(255,255,255,.08) 50%, rgba(255,255,255,0) 100%);--label-active-glow: rgba(255, 255, 255, .2);--input-inset-shadow: inset 0 2px 4px rgba(0, 0, 0, .2);--code-bg: #061c1b;--scrollbar-thumb: rgba(94, 234, 212, .34);--chat-header-bg: linear-gradient(180deg, rgba(50, 6, 75, .9), rgba(43, 4, 68, .68));--chat-header-border: rgba(241, 173, 255, .2);--shadow-header: 0 10px 26px rgba(20, 0, 32, .35);--chat-title-text: #fdf6ff;--bubble-assistant-bg: linear-gradient(180deg, rgba(129, 43, 163, .56), rgba(97, 22, 133, .72));--bubble-assistant-text: #f9eaff;--bubble-assistant-border: rgba(250, 181, 255, .34);--bubble-assistant-shadow: inset 0 1px 0 rgba(255, 255, 255, .12), 0 8px 24px rgba(28, 0, 41, .4);--bubble-divider: rgba(255, 218, 255, .18);--accent-inline-strong: #ffd1ff;--danger-bubble-bg: rgba(80, 8, 25, .78);--danger-bubble-border: rgba(253, 130, 152, .45);--danger-bubble-text: #ffd8e0;--composer-placeholder: rgba(252, 230, 255, .75);--send-disabled-bg: rgba(255, 255, 255, .22);--send-disabled-text: rgba(255, 255, 255, .65);--accent-hover-fill: rgba(52, 211, 153, .18);--accent-hover-border: rgba(255, 193, 255, .5);--selected-border: rgba(20, 184, 166, .45);--selected-fill: rgba(20, 184, 166, .15);--pill-accent-bg: rgba(157, 78, 221, .15);--pill-accent-border: rgba(157, 78, 221, .3);--pill-accent-text: #E9D5FF;--pill-accent-hover-bg: rgba(157, 78, 221, .25);--auth-page-bg: radial-gradient(520px 320px at 50% 105%, rgba(52, 211, 153, .3), rgba(52, 211, 153, 0) 74%), radial-gradient(880px 700px at 15% -10%, rgba(20, 184, 166, .28), transparent 62%), linear-gradient(180deg, #064e49 0%, #08756b 45%, #075e58 100%);--auth-decor-icon: rgba(167, 243, 208, .5);--auth-heading-text: #d1fae5;--auth-body-text: #d5f5ed;--auth-label-text: #ffffff;--auth-link-text: #d1fae5;--auth-switch-text: #d5f5ed;--auth-switch-btn-text: #ecfdf5;--auth-social-bg: rgba(209, 250, 229, .18);--auth-social-border: rgba(167, 243, 208, .4);--auth-social-hover-bg: rgba(236, 253, 245, .26);--auth-input-bg: rgba(236, 253, 245, .95);--auth-input-border: rgba(167, 243, 208, .45);--auth-input-focus-bg: rgba(247, 255, 252, .98);--auth-placeholder: rgba(20, 83, 45, .56)}:root[data-theme=light]{--bg-page: #f2f8f6;--bg-canvas: radial-gradient(1200px 800px at 14% -15%, rgba(15, 118, 110, .1), transparent 58%), radial-gradient(900px 700px at 95% 10%, rgba(20, 184, 166, .08), transparent 60%), linear-gradient(180deg, #f8fcfb 0%, #f2f8f6 40%, #edf5f2 100%);--bg-surface: #ffffff;--bg-surface-hover: #e8f4f0;--bg-card: #ffffff;--bg-input: #edf6f3;--bg-input-focus: #e3f1ed;--stage-bg: #edf6f3;--border-subtle: rgba(12, 74, 67, .16);--border-focus: rgba(15, 118, 110, .38);--stage-border: rgba(12, 74, 67, .16);--text-primary: #12332f;--text-secondary: #3e625c;--text-muted: #6d8b85;--color-label-active: #0f766e;--color-secondary: #0f766e;--accent-text: #0f766e;--accent-soft-text: #115e59;--shadow-card: 0 1px 2px rgba(12, 74, 67, .05), 0 4px 14px rgba(12, 74, 67, .07);--shadow-button: 0 4px 14px rgba(15, 118, 110, .22);--overlay-faint: rgba(45, 25, 90, .04);--overlay-subtle: rgba(45, 25, 90, .06);--overlay-soft: rgba(45, 25, 90, .09);--overlay-medium: rgba(45, 25, 90, .12);--overlay-strong: rgba(45, 25, 90, .2);--border-faint: rgba(45, 25, 90, .12);--border-overlay: rgba(45, 25, 90, .18);--scrim: rgba(35, 20, 60, .45);--scrim-strong: rgba(35, 20, 60, .5);--hero-fade: rgba(15, 118, 110, .06);--popover-bg: rgba(255, 255, 255, .98);--shadow-popover: 0 10px 30px rgba(35, 20, 60, .18);--toast-shadow: 0 10px 30px rgba(35, 20, 60, .16), inset 0 1px 0 rgba(255, 255, 255, .6);--floating-shadow: 0 12px 30px rgba(35, 20, 60, .18);--sidebar-bg: rgba(255, 255, 255, .82);--navbar-bg: rgba(255, 255, 255, .88);--panel-glass-bg: rgba(255, 255, 255, .92);--card-tinted-bg: radial-gradient(circle at 100% 0%, rgba(20, 184, 166, .08) 0%, #ffffff 100%);--heading-solid: #12332f;--divider-gradient: linear-gradient(90deg, rgba(12,74,67,0) 0%, rgba(12,74,67,.12) 50%, rgba(12,74,67,0) 100%);--label-active-glow: rgba(15, 118, 110, .14);--input-inset-shadow: none;--code-bg: #eaf5f2;--scrollbar-thumb: rgba(15, 118, 110, .3);--chat-header-bg: linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(250, 246, 255, .85));--chat-header-border: rgba(15, 118, 110, .2);--shadow-header: 0 6px 18px rgba(35, 20, 60, .08);--chat-title-text: #241a38;--bubble-assistant-bg: linear-gradient(180deg, #ffffff, #faf7ff);--bubble-assistant-text: #2b2140;--bubble-assistant-border: rgba(15, 118, 110, .24);--bubble-assistant-shadow: 0 4px 14px rgba(35, 20, 60, .08);--bubble-divider: rgba(45, 25, 90, .12);--accent-inline-strong: #0f766e;--danger-bubble-bg: #fdf2f3;--danger-bubble-border: rgba(239, 68, 68, .35);--danger-bubble-text: #9f1239;--composer-placeholder: rgba(45, 25, 90, .5);--send-disabled-bg: rgba(45, 25, 90, .12);--send-disabled-text: rgba(45, 25, 90, .45);--accent-hover-fill: rgba(147, 51, 234, .12);--accent-hover-border: rgba(147, 51, 234, .4);--selected-border: rgba(15, 118, 110, .42);--selected-fill: rgba(15, 118, 110, .12);--pill-accent-bg: rgba(15, 118, 110, .1);--pill-accent-border: rgba(15, 118, 110, .28);--pill-accent-text: #0f766e;--pill-accent-hover-bg: rgba(15, 118, 110, .16);--auth-page-bg: radial-gradient(520px 320px at 50% 105%, rgba(20, 184, 166, .14), rgba(20, 184, 166, 0) 74%), radial-gradient(880px 700px at 15% -10%, rgba(15, 118, 110, .1), transparent 62%), linear-gradient(180deg, #fbf8fd 0%, #f7f0fc 45%, #f4ecfa 100%);--auth-decor-icon: rgba(15, 118, 110, .28);--auth-heading-text: #115e59;--auth-body-text: #5d3a72;--auth-label-text: #3d2350;--auth-link-text: #7e22ce;--auth-switch-text: #5d3a72;--auth-switch-btn-text: #0f766e;--auth-social-bg: rgba(255, 255, 255, .7);--auth-social-border: rgba(15, 118, 110, .3);--auth-social-hover-bg: #ffffff;--auth-input-bg: #ffffff;--auth-input-focus-bg: #fdfbff;--auth-placeholder: rgba(61, 35, 80, .55)}:root[data-theme=custom]{--color-primary: var(--custom-primary, #0f766e);--color-primary-hover: color-mix(in srgb, var(--color-primary) 82%, #06201e);--color-primary-light: color-mix(in srgb, var(--color-primary) 62%, #ffffff);--color-primary-dark: color-mix(in srgb, var(--color-primary) 88%, #06201e);--color-secondary: var(--color-primary);--color-accent: var(--color-primary);--gradient-primary: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));--gradient-primary-hover: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));--color-primary-glow: color-mix(in srgb, var(--color-primary) 35%, transparent);--bg-page: #f2f8f6;--bg-canvas: radial-gradient(1200px 800px at 14% -15%, color-mix(in srgb, var(--color-primary) 12%, transparent), transparent 58%), radial-gradient(900px 700px at 95% 10%, color-mix(in srgb, var(--color-primary) 10%, transparent), transparent 60%), linear-gradient(180deg, #f8fcfb 0%, #f2f8f6 40%, #edf5f2 100%);--bg-surface: #ffffff;--bg-surface-hover: color-mix(in srgb, var(--color-primary) 8%, #ffffff);--bg-card: #ffffff;--bg-input: #edf6f3;--bg-input-focus: #e3f1ed;--stage-bg: #edf6f3;--border-subtle: color-mix(in srgb, var(--color-primary) 18%, rgba(15, 118, 110, .15));--border-focus: color-mix(in srgb, var(--color-primary) 42%, transparent);--stage-border: color-mix(in srgb, var(--color-primary) 18%, rgba(15, 118, 110, .15));--text-primary: #12332f;--text-secondary: #3e625c;--text-muted: #6d8b85;--color-label-active: var(--color-primary);--color-on-accent: #03201d;--accent-text: var(--color-primary);--accent-soft-text: var(--color-primary-dark);--menu-option-text: #315c56;--menu-option-hover-text: #115e59;--shadow-card: 0 1px 2px rgba(12, 74, 67, .05), 0 4px 14px rgba(12, 74, 67, .07);--shadow-button: 0 4px 14px color-mix(in srgb, var(--color-primary) 24%, transparent);--overlay-faint: color-mix(in srgb, var(--color-primary) 4%, transparent);--overlay-subtle: color-mix(in srgb, var(--color-primary) 7%, transparent);--overlay-soft: color-mix(in srgb, var(--color-primary) 10%, transparent);--overlay-medium: rgba(45, 25, 90, .12);--overlay-strong: rgba(45, 25, 90, .2);--border-faint: rgba(45, 25, 90, .12);--border-overlay: rgba(45, 25, 90, .18);--scrim: rgba(35, 20, 60, .45);--scrim-strong: rgba(35, 20, 60, .5);--hero-fade: color-mix(in srgb, var(--color-primary) 8%, transparent);--popover-bg: rgba(255, 255, 255, .98);--shadow-popover: 0 10px 30px rgba(35, 20, 60, .18);--toast-shadow: 0 10px 30px rgba(35, 20, 60, .16), inset 0 1px 0 rgba(255, 255, 255, .6);--floating-shadow: 0 12px 30px rgba(35, 20, 60, .18);--sidebar-bg: rgba(255, 255, 255, .84);--navbar-bg: rgba(255, 255, 255, .9);--panel-glass-bg: rgba(255, 255, 255, .94);--card-tinted-bg: radial-gradient(circle at 100% 0%, color-mix(in srgb, var(--color-primary) 8%, transparent) 0%, #ffffff 100%);--heading-solid: var(--text-primary);--divider-gradient: linear-gradient(90deg, rgba(12,74,67,0) 0%, rgba(12,74,67,.12) 50%, rgba(12,74,67,0) 100%);--label-active-glow: color-mix(in srgb, var(--color-primary) 17%, transparent);--input-inset-shadow: none;--code-bg: #eaf5f2;--scrollbar-thumb: color-mix(in srgb, var(--color-primary) 32%, transparent);--chat-header-bg: linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(250, 246, 255, .85));--chat-header-border: color-mix(in srgb, var(--color-primary) 24%, transparent);--shadow-header: 0 6px 18px rgba(35, 20, 60, .08);--chat-title-text: #241a38;--bubble-assistant-bg: linear-gradient(180deg, #ffffff, #faf7ff);--bubble-assistant-text: #2b2140;--bubble-assistant-border: color-mix(in srgb, var(--color-primary) 24%, transparent);--bubble-assistant-shadow: 0 4px 14px rgba(35, 20, 60, .08);--bubble-divider: rgba(45, 25, 90, .12);--accent-inline-strong: var(--color-primary);--danger-bubble-bg: #fdf2f3;--danger-bubble-border: rgba(239, 68, 68, .35);--danger-bubble-text: #9f1239;--composer-placeholder: rgba(45, 25, 90, .5);--send-disabled-bg: rgba(45, 25, 90, .12);--send-disabled-text: rgba(45, 25, 90, .45);--accent-hover-fill: color-mix(in srgb, var(--color-primary) 12%, transparent);--accent-hover-border: color-mix(in srgb, var(--color-primary) 36%, transparent);--selected-border: color-mix(in srgb, var(--color-primary) 42%, transparent);--selected-fill: color-mix(in srgb, var(--color-primary) 12%, transparent);--pill-accent-bg: color-mix(in srgb, var(--color-primary) 10%, transparent);--pill-accent-border: color-mix(in srgb, var(--color-primary) 28%, transparent);--pill-accent-text: var(--color-primary);--pill-accent-hover-bg: color-mix(in srgb, var(--color-primary) 16%, transparent);--auth-page-bg: radial-gradient(520px 320px at 50% 105%, color-mix(in srgb, var(--color-primary) 14%, transparent), rgba(20, 184, 166, 0) 74%), radial-gradient(880px 700px at 15% -10%, color-mix(in srgb, var(--color-primary) 10%, transparent), transparent 62%), linear-gradient(180deg, #fbf8fd 0%, #f7f0fc 45%, #f4ecfa 100%);--auth-decor-icon: color-mix(in srgb, var(--color-primary) 28%, transparent);--auth-heading-text: var(--color-primary-dark);--auth-body-text: #5d3a72;--auth-label-text: #3d2350;--auth-link-text: var(--color-primary-dark);--auth-switch-text: #5d3a72;--auth-switch-btn-text: var(--color-primary);--auth-social-bg: rgba(255, 255, 255, .7);--auth-social-border: color-mix(in srgb, var(--color-primary) 26%, transparent);--auth-social-hover-bg: #ffffff;--auth-input-bg: #ffffff;--auth-input-focus-bg: #fdfbff;--auth-placeholder: rgba(61, 35, 80, .55)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-family);background-color:var(--bg-page);color:var(--text-primary);min-height:100vh;min-height:100dvh;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:clip}#root{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column}a{color:var(--color-secondary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary)}button{cursor:pointer;font-family:var(--font-family);border:none;outline:none}input,textarea{font-family:var(--font-family)}.page-bg{position:fixed;top:0;right:0;bottom:0;left:0;z-index:-1;background:var(--bg-canvas)}.page-bg-mid,.ai-glow-spot{display:none}.dashboard-badge,.premium-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 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var(--transition-normal)}.form-select-trigger.is-open{border-color:var(--color-primary);background:var(--bg-input-focus)}.form-select-value{font-size:.9375rem;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:flex;align-items:center}.form-placeholder{color:var(--text-muted)}.form-select-arrow i{transition:transform .3s ease}.form-select-arrow i.rotate{transform:rotate(180deg)}.form-select-dropdown{position:absolute;top:calc(100% - 1.5px);left:0;right:0;background:var(--surface-menu);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1.5px solid var(--color-primary);border-top:none;border-bottom-left-radius:var(--radius-md);border-bottom-right-radius:var(--radius-md);z-index:100;list-style:none;padding:8px 0;margin:0;max-height:240px;overflow-y:auto;box-shadow:var(--shadow-popover)}.form-select-option{padding:10px 16px;font-size:.875rem;color:var(--menu-option-text);cursor:pointer;transition:all .2s 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slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.form-error{font-size:.8125rem;color:var(--text-error);margin-top:5px;padding-left:4px;display:flex;align-items:center;gap:6px}.divider{display:flex;align-items:center;gap:12px;color:var(--text-muted);font-size:.8125rem;font-weight:500}.divider:before,.divider:after{content:"";flex:1;height:1px;background:var(--border-subtle)}.social-icons-row{display:flex;align-items:center;justify-content:center;gap:16px}.social-icon-btn{width:48px;height:48px;border-radius:50%;border:1.5px solid var(--border-subtle);background:#fff;display:flex;align-items:center;justify-content:center;transition:all .2s ease;color:var(--text-primary);flex-shrink:0;box-shadow:0 1px 3px #00000012;cursor:pointer;outline:none}.social-icon-btn:focus-visible{outline:2.5px solid var(--color-primary);outline-offset:3px}.social-icon-btn:hover{transform:translateY(-2px);border-color:#c4b5fd;background:#faf5ff;box-shadow:0 6px 18px 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cubic-bezier(.175,.885,.32,1.15) forwards;transition:all .3s ease}.toast:before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px}.toast.exiting{animation:toastExit .3s ease forwards}.toast-success{border-color:#10b98126}.toast-success:before{background:linear-gradient(180deg,#10b981,#059669);box-shadow:0 0 10px #10b98199}.toast-success svg{color:#34d399;filter:drop-shadow(0 0 4px rgba(52,211,153,.3));flex-shrink:0}.toast-error{border-color:#ef444426}.toast-error:before{background:linear-gradient(180deg,#ef4444,#dc2626);box-shadow:0 0 10px #ef444499}.toast-error svg{color:#f87171;filter:drop-shadow(0 0 4px rgba(248,113,113,.3));flex-shrink:0}.toast-info{border-color:#14b8a62e}.toast-info:before{background:linear-gradient(180deg,#14b8a6,#0f766e);box-shadow:0 0 10px #14b8a699}.toast-info svg{color:#c084fc;filter:drop-shadow(0 0 4px rgba(192,132,252,.3));flex-shrink:0}@keyframes toastEntrance{0%{opacity:0;transform:translate(50px) scale(.9);filter:blur(4px)}to{opacity:1;transform:translate(0) scale(1);filter:blur(0)}}@keyframes toastExit{0%{opacity:1;transform:translate(0) scale(1)}to{opacity:0;transform:translate(50px) scale(.9);filter:blur(4px)}}.spinner{width:18px;height:18px;border:2px solid rgba(255,255,255,.3);border-color:color-mix(in srgb,currentColor 30%,transparent);border-top-color:currentColor;border-radius:50%;animation:spin .7s linear infinite;flex-shrink:0}.spinner-sm{width:14px;height:14px;border-width:2px}@keyframes spin{to{transform:rotate(360deg)}}.auth-page{position:relative;z-index:1;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:6rem 24px 3rem;overflow:hidden;background:radial-gradient(650px 500px at 8% 20%,rgba(15,118,110,.14),transparent 68%),radial-gradient(620px 520px at 94% 80%,rgba(20,184,166,.15),transparent 70%),linear-gradient(135deg,#f4faf7,#edf5f1 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#0f766e0f;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.auth-bg-icons{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:1;opacity:.36}.auth-bg-icon{position:absolute;color:#0f766e33;font-size:1.7rem}.auth-bg-icon:nth-child(1){left:12%;top:10%}.auth-bg-icon:nth-child(2){right:20%;top:9%;font-size:1.85rem}.auth-bg-icon:nth-child(3){right:11%;top:14%;font-size:1.8rem;transform:rotate(-15deg)}.auth-bg-icon:nth-child(4){left:12%;top:30%}.auth-bg-icon:nth-child(5){right:16%;top:34%}.auth-bg-icon:nth-child(6){left:8%;top:53%}.auth-bg-icon:nth-child(7){right:23%;top:58%;transform:rotate(-22deg)}.auth-bg-icon:nth-child(8){right:7%;top:66%;font-size:1.4rem}.auth-bg-icon:nth-child(9){left:13%;bottom:12%}.auth-bg-icon:nth-child(10){right:15%;bottom:13%}.auth-bg-icon:nth-child(11){left:42%;top:24%;font-size:1.5rem}.auth-bg-icon:nth-child(12){left:38%;bottom:18%;font-size:1.55rem}.auth-brand-panel{position:relative;overflow:hidden;min-height:590px;padding:3.5rem 3rem;color:#f9fbf7;background:radial-gradient(340px 260px at 100% 0%,rgba(20,184,166,.3),transparent 70%),linear-gradient(145deg,#0f766e,#155e75)}.auth-brand-mark{position:relative;z-index:1;display:grid;place-items:center;width:2.75rem;height:2.75rem;margin-bottom:5rem;border:1px solid rgba(255,255,255,.26);border-radius:.8rem;background:#ffffff24;color:#ffd7c9;font-size:1.1rem}.auth-brand-kicker,.auth-form-kicker{position:relative;z-index:1;margin:0 0 .8rem;font-size:.68rem;font-weight:800;letter-spacing:.14em}.auth-brand-kicker{color:#bce2d8}.auth-brand-panel h2{position:relative;z-index:1;margin:0;color:#fff;font-size:clamp(2.6rem,4vw,4.4rem);line-height:.98;letter-spacing:-.055em}.auth-brand-panel h2 em{color:#ffd0c0;font-style:normal}.auth-brand-copy{position:relative;z-index:1;max-width:19rem;margin:1.5rem 0 2.5rem;color:#f9fbf7c7;font-size:.98rem;line-height:1.65}.auth-brand-note{position:relative;z-index:1;display:flex;align-items:flex-start;gap:.7rem;max-width:20rem;padding-top:1.2rem;border-top:1px solid rgba(255,255,255,.2);color:#f9fbf7d1;font-size:.78rem;line-height:1.55}.auth-brand-note-icon{display:grid;place-items:center;width:1.25rem;height:1.25rem;flex:0 0 auto;border-radius:50%;background:var(--color-primary-light);color:#fff;font-size:.62rem}.auth-brand-orbit{position:absolute;border:1px solid rgba(255,255,255,.13);border-radius:50%;pointer-events:none}.auth-brand-orbit-one{width:22rem;height:22rem;right:-11rem;top:7rem}.auth-brand-orbit-two{width:31rem;height:31rem;right:-16rem;top:2.5rem}.auth-page .auth-card{min-width:0;background:#fff;border:none;border-radius:0;box-shadow:none;padding:3.25rem 4rem 2.75rem;-webkit-backdrop-filter:none;backdrop-filter:none}:root[data-theme=app] .auth-page{background:var(--bg-canvas)}:root[data-theme=app] .auth-container,:root[data-theme=app] .auth-page .auth-card{background:var(--bg-surface);border-color:var(--border-subtle)}:root[data-theme=custom] .auth-page{background:var(--auth-page-bg)}:root[data-theme=custom] .auth-container,:root[data-theme=custom] .auth-page .auth-card{background:var(--bg-surface);border-color:var(--border-subtle)}.auth-card{padding:0}@media(max-width:480px){.auth-card{padding:0}}.auth-card-header{margin-bottom:28px;text-align:left}.auth-form-kicker{color:#0f766e}.auth-card-header h1{font-family:Poppins,Inter,system-ui,sans-serif;font-size:clamp(2rem,4vw,2.65rem);font-weight:700;color:#182126;margin-bottom:10px;letter-spacing:-.045em;line-height:1.05}.auth-card-header p{color:#687579;font-size:.92rem;font-weight:400;line-height:1.4}.auth-form{display:flex;flex-direction:column;gap:14px}.auth-page .auth-form .form-label{position:static;transform:none;display:block;margin-bottom:6px;color:#425158;font-size:.78rem;font-weight:700;letter-spacing:0;line-height:1;font-family:system-ui,-apple-system,sans-serif}.auth-page .auth-form .form-label--active{top:auto;transform:none;font-size:1rem;font-weight:600;letter-spacing:0;text-transform:none;color:#0f766e}.auth-page .auth-form .form-input{padding:12px 14px;min-height:48px;border-radius:10px;background:#f7f9f6;border:1px solid #d8e0dc;color:#182126;box-shadow:inset 0 1px 1px #18212608;font-size:.95rem}.auth-page .auth-form .form-input::placeholder{color:#94a09e}.auth-page .auth-form .form-input:focus{border-color:#0f766e;box-shadow:none;background:#fff}.auth-page .auth-form .form-select-trigger{background:#f7f9f6;border:1px solid #d8e0dc;color:#182126;box-shadow:inset 0 1px 1px #18212608;border-radius:10px;padding:0 14px;min-height:48px}.auth-page .auth-form .form-select-trigger.is-open{border-color:#0f766e;box-shadow:0 0 0 3px #0f766e21;background:#fff}.auth-page .auth-form .form-select-value{color:#182126}.auth-page .auth-form .form-placeholder{color:#94a09e}.auth-page .auth-form .form-select-dropdown{background:#fff;border:1px solid #d8e0dc;box-shadow:0 12px 30px #1821261f}.auth-page .auth-form .form-select-option{color:#182126}.auth-page .auth-form .form-select-option:hover{background:#0f766e14;color:#0f766e;padding-left:20px}.auth-page .auth-form .form-select-option.is-selected{background:#0f766e1f;color:#0f766e}.auth-page .auth-form .form-label{color:#425158}.auth-page .auth-form .form-field{margin-bottom:0}.auth-form-footer{text-align:center;margin-top:6px}.auth-form-footer a{font-size:.875rem;color:var(--text-muted);transition:color var(--transition-fast)}.auth-form-footer a:hover{color:var(--color-secondary)}.auth-primary-btn{margin-top:10px;width:100%;min-height:50px;border:none;border-radius:999px;background:linear-gradient(135deg,#0f766e,#155e75);color:#fff;font-size:1rem;font-weight:700;font-family:system-ui,-apple-system,sans-serif;font-style:regular;letter-spacing:.01em;box-shadow:0 10px 22px #0f766e3b;align-self:center}.auth-btn-content{display:inline-flex;align-items:center;justify-content:center;gap:10px}.auth-primary-btn.is-loading{opacity:.85;cursor:progress}.auth-link-btn{align-self:center;background:none;border:none;color:#0f766e;font-weight:500;text-decoration:underline;text-underline-offset:3px;padding:0;margin-top:2px;margin-bottom:4px;font-size:.96rem}.auth-link-btn:hover{color:var(--color-primary-hover)}.auth-switch-text{text-align:center;font-size:1rem;color:#687579;margin-top:24px}.auth-switch-text button{background:none;color:#0f766e;font-size:1rem;font-weight:700;text-transform:capitalize;text-decoration:underline;text-underline-offset:3px;padding:0;margin-left:4px;transition:color var(--transition-fast)}.auth-switch-text button:hover{color:var(--color-primary-hover)}.auth-social-block{margin-top:24px;padding-top:20px;border-top:1px solid #e1e6e2}.auth-page .social-icons-row{gap:18px}.auth-page .social-icon-btn{width:50px;height:50px;background:#f7f9f6;border:1px solid #d8e0dc;box-shadow:none}.auth-page .social-icon-btn:hover{transform:translateY(-2px) scale(1.03);background:#fff;border-color:#0f766e66}.auth-password-toggle{background:transparent;color:#71817e;border:none;display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;line-height:1;font-size:.95rem}.auth-password-toggle:hover{color:#0f766e}@media(max-width:720px){.auth-page{padding:5rem 16px 2rem}.auth-container{display:block;max-width:500px;border-radius:20px}.auth-brand-panel{min-height:auto;padding:1.6rem 1.5rem 1.8rem}.auth-brand-mark{margin-bottom:2.5rem}.auth-brand-panel h2{font-size:2.6rem}.auth-brand-copy{margin:1rem 0 1.4rem}.auth-brand-note{max-width:none}.auth-brand-orbit-one{width:13rem;height:13rem;right:-7rem;top:1rem}.auth-brand-orbit-two{width:18rem;height:18rem;right:-10rem;top:-1rem}.auth-page .auth-card{padding:2.25rem 1.5rem 2rem}}.dashboard-page{position:relative;height:100vh;height:100dvh;display:flex;overflow:hidden;background:radial-gradient(900px 620px at 88% -10%,rgba(20,184,166,.08),transparent 64%),#f4f6f2}:root[data-theme=app] .dashboard-page{background:radial-gradient(900px 620px at 88% -10%,rgba(20,184,166,.12),transparent 64%),linear-gradient(180deg,#061b1a,#0a2221);color:var(--text-primary)}:root[data-theme=app] .dashboard-main,:root[data-theme=app] .dashboard-content,:root[data-theme=app] .dashboard-hero,:root[data-theme=app] .settings-container,:root[data-theme=app] .settings-main,:root[data-theme=app] .settings-section{color:var(--text-primary)}:root[data-theme=app] .app-sidebar{background:#0b1213d1;border-right-color:var(--border-subtle);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}:root[data-theme=app] .sidebar-logo,:root[data-theme=app] .dashboard-user-name,:root[data-theme=app] .dashboard-user-email,:root[data-theme=app] .nav-item,:root[data-theme=app] .mobile-nav-item,:root[data-theme=app] .settings-header-content h1,:root[data-theme=app] .settings-section-head h2,:root[data-theme=app] .settings-row-title,:root[data-theme=app] .settings-row-desc,:root[data-theme=app] .settings-value,:root[data-theme=app] .custom-theme-control,:root[data-theme=app] .theme-option,:root[data-theme=app] .dashboard-user-pill{color:var(--text-primary)}:root[data-theme=app] .sidebar-section-label,:root[data-theme=app] .settings-header-content p,:root[data-theme=app] .settings-section-head p,:root[data-theme=app] .settings-row-desc,:root[data-theme=app] .settings-row-control .settings-value,:root[data-theme=app] .dashboard-user-email,:root[data-theme=app] .mobile-nav-item,:root[data-theme=app] .nav-item,:root[data-theme=app] .theme-option{color:var(--text-secondary)}:root[data-theme=app] .dashboard-user-pill{background:#121f1ff2;border-color:var(--border-subtle);box-shadow:var(--shadow-card)}:root[data-theme=app] .dashboard-avatar{background:#14b8a624;border-color:#5eead440;color:#d1fae5}:root[data-theme=app] .nav-item{background:transparent;color:var(--text-secondary)}:root[data-theme=app] .nav-item:hover{background:var(--navigation-hover-bg);color:var(--navigation-hover-color)}:root[data-theme=app] .nav-item.active{background:#0f766e24;color:#d1fae5;border-color:#0fb8a633;box-shadow:inset 3px 0 #34d399,0 4px 12px #0f766e33}:root[data-theme=custom] .dashboard-page{background:radial-gradient(900px 620px at 88% -10%,color-mix(in srgb,var(--color-primary) 11%,transparent),transparent 64%),linear-gradient(180deg,#f5faf8,#edf5f3)}:root[data-theme=custom] .app-sidebar{background:#fffc;border-right-color:#0f766e1f}:root[data-theme=custom] .nav-item:hover{background:var(--navigation-hover-bg);color:var(--navigation-hover-color)}:root[data-theme=custom] .nav-item.active{background:color-mix(in srgb,var(--color-primary) 12%,#ffffff);color:var(--color-primary-dark);border-color:color-mix(in srgb,var(--color-primary) 22%,transparent);box-shadow:inset 3px 0 0 var(--color-primary),0 4px 12px color-mix(in srgb,var(--color-primary) 14%,transparent)}:root[data-theme=custom] .theme-selector,:root[data-theme=custom] .theme-option.active{background:#fffffff5;border-color:var(--border-subtle)}:root[data-theme=custom] .theme-option:hover{background:var(--navigation-hover-bg);color:var(--navigation-hover-color)}:root[data-theme=custom] .theme-option.active{color:var(--text-primary);box-shadow:var(--shadow-card)}:root[data-theme=app] .nav-item i,:root[data-theme=app] .mobile-nav-item i,:root[data-theme=app] .sidebar-logo-mark,:root[data-theme=app] .sidebar-profile-arrow{color:#7ee7d1}:root[data-theme=app] .mobile-bottom-nav{background:#071112f2;border-top-color:var(--border-subtle);box-shadow:0 -12px 30px #00000040}:root[data-theme=app] .mobile-nav-item.active{background:#0f766e26;color:#d1fae5;box-shadow:inset 0 2px #34d399}:root[data-theme=app] .theme-selector,:root[data-theme=app] .theme-option.active,:root[data-theme=app] .custom-theme-control input[type=color]{background:#111818e6;border-color:var(--border-subtle)}:root[data-theme=app] .theme-option{background:transparent}:root[data-theme=app] .theme-option.active{color:var(--text-primary);box-shadow:var(--shadow-card)}:root[data-theme=app] .settings-row,:root[data-theme=app] .settings-section,:root[data-theme=app] .settings-header{border-color:var(--border-subtle)}.app-sidebar{width:264px;height:100vh;height:100dvh;position:sticky;top:0;background:#fffffcd1;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-right:1px solid rgba(24,33,38,.1);display:flex;flex-direction:column;padding:.75rem;z-index:100}.sidebar-scroll{flex:1;min-height:0;overflow-y:auto;padding:1rem .75rem}.sidebar-logo{display:flex;align-items:center;gap:10px;font-size:1.05rem;font-weight:700;color:var(--text-primary);margin:1px 0 1.5rem;padding:.7rem .75rem;border-radius:14px;transition:background .18s ease}.sidebar-logo:hover{background:#0f766e12}.sidebar-plan-card{margin:0 0 1rem;padding:.9rem .85rem;border:1px solid rgba(94,234,212,.18);border-radius:16px;background:linear-gradient(135deg,#14b8a61f,#0f766e0f);box-shadow:inset 0 1px #ffffff0f}.sidebar-plan-card__head{display:flex;align-items:center;justify-content:space-between;gap:.6rem;margin-bottom:.7rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.08em;font-size:.62rem;font-weight:800}.sidebar-plan-card__head i{color:#fbbf24}.sidebar-plan-card__body{display:flex;align-items:center;justify-content:space-between;gap:.75rem}.sidebar-plan-card__body strong{font-size:.96rem;color:var(--text-primary)}.sidebar-plan-card__body a{color:var(--accent-text, var(--color-secondary));text-decoration:none;font-size:.75rem;font-weight:700}.sidebar-profile-header{display:block;border-radius:16px;text-decoration:none;transition:transform .18s ease}.sidebar-profile-header:hover{transform:translateY(-1px)}.sidebar-profile-header:hover .dashboard-user-pill{border-color:#0f766e47;background:#fff}.sidebar-profile-arrow{margin-left:auto;color:#91a09e;font-size:.72rem;opacity:0;transform:translate(-3px,3px);transition:opacity .18s ease,transform .18s ease}.sidebar-profile-header:hover .sidebar-profile-arrow,.sidebar-profile-header:focus-visible .sidebar-profile-arrow{opacity:1;transform:translate(0)}.sidebar-logo-mark{display:flex;align-items:center;justify-content:center;color:#0f766e;line-height:0}.sidebar-nav{flex:1;display:flex;flex-direction:column;gap:.45rem}.sidebar-section-label{margin:1.5rem 0 .6rem;padding:0 .8rem;color:#9aa7a5;font-size:.65rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.nav-item{display:flex;align-items:center;gap:11px;padding:.8rem .85rem;border:1px solid transparent;border-radius:13px;color:#687579;font-size:.9rem;font-weight:600;transition:all .2s ease;cursor:pointer;text-decoration:none}.nav-item i{font-size:1rem;width:20px;width:19px;opacity:.72;color:#0f766e}.nav-item:hover{background:var(--overlay-subtle);color:var(--text-primary)}.nav-item.active{background:#0f766e1a;color:#155e75;border-color:#0f766e2e;box-shadow:inset 3px 0 #0f766e,0 4px 12px #0f766e0f;font-weight:700}.sidebar-footer{flex-shrink:0;padding:1.5rem;border-top:1px solid var(--border-subtle);background:var(--bg-page);display:flex;flex-direction:column;gap:.5rem}.nav-item-danger{color:var(--text-error);opacity:.8}.nav-item-danger:hover{background:#ef44441a;color:var(--text-error)}.nav-item:hover,.mobile-nav-link:hover,.mobile-chat-nav-link:hover,.mobile-nav-settings:hover,.theme-option:hover{background:var(--navigation-hover-bg);color:var(--navigation-hover-color)}:root{--mobile-nav-height: 72px}.mobile-bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;height:calc(var(--mobile-nav-height) + env(safe-area-inset-bottom,0px));padding-bottom:env(safe-area-inset-bottom,0px);background:#fffffcf5;border-top:1px solid rgba(24,33,38,.1);box-shadow:0 -12px 30px #1821261a;z-index:1000;justify-content:center;align-items:center}.mobile-nav-backdrop{display:none}.mobile-nav-item{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;color:#758286;font-size:.65rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;min-width:58px;min-height:54px;padding:7px 11px}.mobile-nav-item:focus-visible{outline:2px solid var(--color-primary-light);outline-offset:-2px;border-radius:8px}.mobile-nav-item i{font-size:1.1rem}.mobile-nav-item.active{color:#0f766e;background:#0f766e1a;border-radius:15px;box-shadow:inset 0 2px #0f766e}.mobile-nav-item-danger{color:var(--text-error)}@media(max-width:850px){.app-sidebar{display:none}.mobile-bottom-nav{display:flex}.dashboard-page{flex-direction:column}.dashboard-main{padding:64px 16px 40px!important}.settings-layout .dashboard-main{padding-top:0!important}.mobile-app-toolbar{position:fixed;z-index:1000;top:env(safe-area-inset-top,0px);left:0;display:flex;align-items:center;gap:12px;width:100%;height:56px;padding:0 14px;border-bottom:1px solid var(--border-subtle);background:color-mix(in srgb,var(--bg-surface) 94%,transparent);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.mobile-app-brand{display:inline-flex;align-items:center;gap:9px;color:var(--text-primary);font-size:.9rem;font-weight:700}.mobile-bottom-nav{justify-content:center;padding:0 12px env(safe-area-inset-bottom,0px)}.mobile-nav-backdrop{display:block;position:fixed;top:0;right:0;bottom:0;left:0;z-index:999;border:0;background:#0a19176b;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.mobile-nav-trigger{display:grid;place-items:center;width:46px;height:46px;padding:0;border:1px solid var(--border-subtle);border-radius:12px;background:var(--bg-surface);color:var(--text-primary);font-size:1rem;cursor:pointer}.mobile-nav-trigger i{font-size:1rem}.mobile-nav-panel{position:fixed;z-index:1001;inset:0 auto 0 0;display:flex;flex-direction:column;width:min(320px,86vw);height:100vh;height:100dvh;padding:env(safe-area-inset-top,0px) 14px env(safe-area-inset-bottom,0px);border:1px solid var(--border-subtle);border-radius:0 14px 14px 0;background:var(--bg-surface);box-shadow:0 18px 50px #061b1a3d;animation:mobile-nav-in .18s ease-out both}@keyframes mobile-nav-in{0%{opacity:.8;transform:translate(-12px)}to{opacity:1;transform:translate(0)}}.mobile-nav-panel-heading{display:flex;flex:0 0 auto;align-items:center;justify-content:space-between;min-height:64px;padding:8px 2px;border-bottom:1px solid var(--border-subtle)}.mobile-nav-brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-primary);font-weight:700}.mobile-nav-close,.mobile-nav-settings{display:grid;flex:0 0 auto;place-items:center;width:42px;height:42px;border:1px solid var(--border-subtle);border-radius:10px;background:var(--overlay-faint);color:var(--text-secondary);font-size:1rem}.mobile-nav-links{flex:1 1 auto;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:14px 0}.mobile-nav-section-label{padding:2px 10px 8px;color:var(--text-muted);font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em}.mobile-nav-link{display:flex;align-items:center;gap:13px;min-height:46px;padding:9px 11px;border-radius:9px;color:var(--text-primary);font-size:.9rem;font-weight:600}.mobile-nav-link i{width:22px;color:var(--text-muted);text-align:center}.mobile-nav-link.active{background:var(--selected-fill);color:var(--accent-text)}.mobile-nav-link.active i{color:var(--accent-text)}.mobile-nav-footer{display:flex;flex:0 0 auto;align-items:center;gap:10px;min-height:68px;padding:10px 2px calc(10px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--border-subtle)}.mobile-nav-profile{display:flex;flex:1 1 auto;align-items:center;gap:10px;min-width:0}.mobile-nav-profile-info{display:flex;flex-direction:column;min-width:0;line-height:1.35}.mobile-nav-profile-info strong,.mobile-nav-profile-info small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mobile-nav-profile-info strong{color:var(--text-primary);font-size:.82rem}.mobile-nav-profile-info small{color:var(--text-muted);font-size:.7rem}.mobile-nav-settings{color:var(--text-primary)}.mobile-nav-close:focus-visible,.mobile-nav-trigger:focus-visible,.mobile-nav-link:focus-visible,.mobile-nav-settings:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.mobile-nav-close:focus-visible .tutor-layout .dashboard-main,.mobile-nav-trigger:focus-visible .tutor-layout .dashboard-main,.mobile-nav-link:focus-visible .tutor-layout .dashboard-main,.mobile-nav-settings:focus-visible .tutor-layout .dashboard-main{padding-top:0!important}@media(prefers-reduced-motion:reduce){.mobile-nav-panel{animation:none}}}.dashboard-main{flex:1;min-height:0;display:flex;flex-direction:column;align-items:center;padding:0 24px 40px;max-width:1300px;margin:0 auto;width:100%;height:100%;overflow-y:auto}.dashboard-nav{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;padding:20px 32px;border-bottom:1px solid var(--border-subtle);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:var(--navbar-bg)}.dashboard-nav-logo{display:flex;align-items:center;gap:10px;font-size:1.15rem;font-weight:800;color:var(--text-primary)}.dashboard-nav-logo span{width:30px;height:30px;background:var(--color-primary);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.dashboard-user-pill{display:flex;align-items:center;gap:10px;background:#f4f7f4;border:1px solid rgba(24,33,38,.1);border-radius:14px;padding:7px 14px 7px 7px;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.dashboard-avatar{width:30px;height:30px;border-radius:50%;background:#dcece7;border:1px solid rgba(15,118,110,.2);display:flex;align-items:center;justify-content:center;font-size:.875rem;font-weight:700;color:#0f766e;flex-shrink:0}.dashboard-user-info{line-height:1.2}.dashboard-user-name{font-size:.875rem;font-weight:600;color:#182126}.dashboard-user-email{font-size:.75rem;color:#758286}.dashboard-logout-btn{background:none;border:none;color:var(--text-muted);font-size:.8125rem;font-weight:500;padding:6px 12px;border-radius:var(--radius-sm);transition:all var(--transition-fast);margin-left:6px}.dashboard-logout-btn:hover{background:#ef44441a;color:#f87171}.dashboard-content{position:relative;z-index:1;flex:1;display:flex;align-items:center;justify-content:center;padding:48px 24px}.dashboard-hero{text-align:center;max-width:800px;width:100%;display:flex;flex-direction:column;align-items:center}.dashboard-badge{display:inline-flex;align-items:center;gap:8px;background:#6c63ff1a;border:1px solid rgba(108,99,255,.25);color:var(--color-secondary);font-size:.8125rem;font-weight:600;padding:6px 14px;border-radius:var(--radius-full);margin-bottom:24px}.dashboard-badge-dot{width:7px;height:7px;border-radius:50%;background:var(--color-secondary);animation:blink 1.5s ease-in-out infinite}@keyframes blink{0%,to{opacity:1}50%{opacity:.3}}.dashboard-hero h1{font-size:clamp(1.75rem,4vw,2.75rem);font-weight:800;letter-spacing:-.03em;line-height:1.2;margin-bottom:16px;background:var(--heading-solid);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.dashboard-hero p{font-size:1.0625rem;color:var(--text-secondary);line-height:1.75;margin-bottom:36px}.coming-soon-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:8px}@media(max-width:480px){.coming-soon-grid{grid-template-columns:1fr}}.coming-soon-card{background:var(--bg-card);border:1.2px solid var(--border-subtle);border-radius:var(--radius-md);padding:20px 16px;text-align:center;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);transition:all var(--transition-normal)}.coming-soon-card:hover{background:var(--bg-surface-hover);border-color:#6c63ff40;transform:translateY(-2px)}.coming-soon-card-icon{font-size:1.75rem;margin-bottom:10px}.coming-soon-card-title{font-size:.875rem;font-weight:600;color:var(--text-primary);margin-bottom:4px}.coming-soon-card-desc{font-size:.75rem;color:var(--text-muted)}.profile-container{display:flex;flex-direction:column;align-items:center;gap:28px;width:100%;max-width:800px;margin:0 auto}.profile-sidebar-card{display:flex;flex-direction:column;align-items:center;padding:32px 24px;text-align:center;border-radius:var(--radius-lg);position:relative;overflow:hidden;width:100%;max-width:500px}.profile-avatar-wrapper{position:relative;margin-bottom:16px}.profile-avatar-large{width:76px;height:76px;border-radius:50%;background:linear-gradient(135deg,var(--color-primary),var(--color-secondary));font-size:1.75rem;font-weight:800;color:#fff;display:flex;align-items:center;justify-content:center;position:relative;z-index:2;border:3px solid var(--overlay-soft);box-shadow:0 6px 24px #6d28d94d}.avatar-glow{position:absolute;top:-10px;left:-10px;right:-10px;bottom:-10px;border-radius:50%;background:radial-gradient(circle,var(--color-primary) 0%,rgba(109,40,217,0) 70%);opacity:.45;z-index:1;animation:avatarPulse 4s infinite alternate}@keyframes avatarPulse{0%{transform:scale(.95);opacity:.3}to{transform:scale(1.1);opacity:.65}}.profile-user-name{font-size:1.15rem;font-weight:700;color:var(--text-primary);margin:0 0 4px;letter-spacing:-.015em}.profile-user-email{font-size:.78rem;color:var(--text-muted);margin:0 0 14px}.profile-status-badge{display:inline-flex;align-items:center;gap:6px;background:#14b8a61f;border:1px solid rgba(20,184,166,.25);color:var(--color-accent);padding:4px 12px;border-radius:var(--radius-full);font-size:.7rem;font-weight:600;letter-spacing:.03em;margin-bottom:20px}.profile-status-badge i{font-size:.8rem}.profile-card-divider{width:100%;height:1px;background:var(--divider-gradient);margin-bottom:24px}.profile-card-bio{font-size:.85rem;color:var(--text-secondary);line-height:1.65;margin:0}.profile-settings-content{display:flex;flex-direction:column;gap:24px;width:100%}.profile-form-section{padding:32px;border-radius:var(--radius-lg);text-align:left;position:relative;z-index:1}.profile-form-section:has(.has-open){z-index:10}.settings-section-title{margin:0 0 20px;font-size:1.1rem;font-weight:700;color:var(--text-primary);display:flex;align-items:center;gap:10px}.settings-section-title i{color:var(--color-primary);font-size:1.2rem}.settings-section-desc{font-size:.85rem;color:var(--text-secondary);margin:-12px 0 24px;line-height:1.6}.profile-form-section.ai-engine-card{border:1.5px solid rgba(20,184,166,.22);background:var(--card-tinted-bg);box-shadow:0 4px 30px #14b8a60a}.profile-form-section.ai-engine-card .settings-section-title i{color:var(--color-accent)}.profile-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.ai-engine-card .profile-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.profile-actions-wrapper{display:flex;align-items:center;justify-content:flex-end;gap:14px;margin-top:10px}.profile-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1.5px solid var(--border-subtle);background:#fff;color:var(--color-on-accent);font-family:var(--font-family);font-size:.875rem;font-weight:600;padding:11px 22px;border-radius:10px;cursor:pointer;transition:background .18s ease,box-shadow .18s ease,transform .15s ease,border-color .18s ease;box-shadow:0 1px 3px #00000012;outline:none}.profile-btn:focus-visible{outline:2.5px solid var(--color-primary);outline-offset:3px}.profile-btn:disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}.profile-btn-primary{background:var(--gradient-primary);border-color:transparent;color:#fff;box-shadow:0 1px 2px #00000014,0 4px 14px #0f766e4d}.profile-btn-primary:hover:not(:disabled){transform:translateY(-1.5px);box-shadow:0 2px 4px #0000001a,0 8px 22px #0f766e66}.profile-btn-primary:active:not(:disabled){transform:translateY(0);box-shadow:0 1px 2px #00000014,0 3px 8px 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0;text-decoration:underline;text-underline-offset:3px}.quiz-me-link:hover,.flashcards-me-link:hover{color:var(--text-primary)}.quiz-me-link:focus-visible,.flashcards-me-link:focus-visible{outline:2px solid var(--accent-text);outline-offset:3px;border-radius:4px}.chat-error-card{display:flex;gap:10px;align-items:flex-start;background:var(--danger-bubble-bg);border:1px solid var(--danger-bubble-border);color:var(--danger-bubble-text);border-radius:12px;padding:12px 14px}.chat-error-icon{color:var(--color-error);font-size:1rem;margin-top:2px}.chat-error-body{flex:1}.chat-error-msg{font-size:.88rem;margin-bottom:8px}.chat-error-actions{display:flex;gap:8px}.chat-error-retry,.chat-error-dismiss{border-radius:8px;padding:6px 14px;font-size:.8rem;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:6px;transition:all .2s ease}.chat-error-retry{background:var(--color-primary-light);border:none;color:#3a0353}.chat-error-retry:hover{background:#fff}.chat-error-dismiss{background:transparent;border:1px solid var(--danger-bubble-border);color:var(--danger-bubble-text)}.chat-error-dismiss:hover{background:#fd829826}.chat-error-retry:focus-visible,.chat-error-dismiss:focus-visible{outline:2px solid var(--accent-text);outline-offset:2px}.sessions-search{display:flex;align-items:center;gap:8px;background:var(--overlay-faint);border:1px solid var(--border-subtle);border-radius:10px;padding:7px 10px;color:var(--text-muted)}.sessions-search input{flex:1;background:transparent;border:none;outline:none;color:var(--text-primary);font-size:.82rem;font-family:var(--font-family)}.sessions-search input::placeholder{color:var(--text-muted)}.confirm-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--scrim-strong);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:200;padding:24px}.confirm-dialog{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:16px;padding:24px;max-width:380px;width:100%;box-shadow:var(--shadow-popover)}.confirm-dialog h3{margin:0 0 10px;font-size:1.05rem;color:var(--text-primary)}.confirm-dialog p{margin:0 0 18px;font-size:.9rem;color:var(--text-secondary);line-height:1.5}.confirm-actions{display:flex;justify-content:flex-end;gap:10px}.confirm-cancel,.confirm-danger{border-radius:10px;padding:9px 18px;font-size:.85rem;font-weight:600;cursor:pointer;transition:all .2s ease}.confirm-cancel{background:transparent;border:1px solid var(--border-subtle);color:var(--text-secondary)}.confirm-cancel:hover{color:var(--text-primary);border-color:var(--text-muted)}.confirm-danger{background:var(--color-error);border:none;color:#fff}.confirm-danger:hover{background:#dc2626}:root[data-theme=app] .tutor-workspace,:root[data-theme=custom] .tutor-workspace{--bg-canvas: var(--bg-page);--bg-surface: var(--bg-surface);--bg-card: var(--bg-card);--text-primary: var(--text-primary);--text-secondary: var(--text-secondary);--text-muted: var(--text-muted);--border-subtle: var(--border-subtle);--panel-glass-bg: var(--panel-glass-bg);--bubble-assistant-bg: var(--bubble-assistant-bg);--bubble-assistant-text: var(--text-primary);--bubble-assistant-border: var(--border-subtle);--color-primary: var(--color-primary);--color-primary-hover: var(--color-primary-hover);background:var(--bg-canvas);color:var(--text-primary)}:root[data-theme=app] .tutor-workspace .chat-sessions-panel,:root[data-theme=app] .tutor-workspace .chat-main,:root[data-theme=app] .tutor-workspace .chat-header,:root[data-theme=app] .tutor-workspace .chat-composer,:root[data-theme=custom] .tutor-workspace .chat-sessions-panel,:root[data-theme=custom] .tutor-workspace .chat-main,:root[data-theme=custom] .tutor-workspace .chat-header,:root[data-theme=custom] .tutor-workspace .chat-composer{background:var(--bg-surface);color:var(--text-primary);border-color:var(--border-subtle)}:root[data-theme=app] .tutor-workspace .new-chat-sidebar-btn,:root[data-theme=app] .tutor-workspace .send-btn,:root[data-theme=custom] .tutor-workspace .new-chat-sidebar-btn,:root[data-theme=custom] .tutor-workspace .send-btn{background:var(--gradient-primary);color:var(--color-on-accent)}.confirm-cancel:focus-visible,.confirm-danger:focus-visible{outline:2px solid var(--accent-text);outline-offset:2px}.undo-toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);z-index:210;display:flex;align-items:center;gap:14px;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:12px;padding:12px 18px;box-shadow:var(--floating-shadow);font-size:.88rem;color:var(--text-primary)}.undo-btn{background:transparent;border:1px solid var(--accent-text);color:var(--accent-text);border-radius:8px;padding:5px 14px;font-size:.82rem;font-weight:600;cursor:pointer}.undo-btn:hover{background:var(--color-primary-light-alpha20)}.undo-btn:focus-visible{outline:2px solid var(--accent-text);outline-offset:2px}@media(prefers-reduced-motion:reduce){.msg-caret{animation:none!important;opacity:0}}.chat-engine{background:var(--bg-canvas)}.chat-header{background:color-mix(in srgb,var(--bg-surface) 92%,transparent);border-bottom-color:var(--border-subtle);box-shadow:0 8px 22px #031e1b12}.chat-title{color:var(--text-primary)}.chat-title small{color:var(--text-muted)}.session-status{border-color:var(--border-subtle);background:var(--overlay-faint);color:var(--text-secondary)}.session-status i{color:var(--color-success)}.chat-sessions-panel{border-right-color:var(--border-subtle);background:var(--bg-surface);box-shadow:14px 0 42px #031e1b2e}.session-item{border-color:var(--border-subtle);background:var(--overlay-faint)}.session-item:hover{border-color:var(--border-focus);background:var(--overlay-subtle)}.session-item.active{border-color:var(--border-focus);background:var(--selected-fill);box-shadow:inset 3px 0 0 var(--color-primary-light)}.chat-bubble.user{border-color:color-mix(in srgb,var(--color-primary-light) 42%,transparent);background:var(--gradient-primary);color:var(--color-on-accent);box-shadow:0 8px 22px color-mix(in srgb,var(--color-primary) 24%,transparent)}.chat-bubble.user .bubble-content strong,.chat-bubble.user .katex{color:var(--color-on-accent)}.chat-bubble.assistant{color:var(--text-primary)}.chat-bubble.assistant.loading{background:color-mix(in srgb,var(--bg-surface) 88%,var(--bg-input))}.chat-input-container{max-width:960px}.chat-input-wrapper{position:relative;border-color:var(--composer-border);background:var(--bg-surface)}.chat-input-wrapper:focus-within{border-color:var(--composer-border);background:var(--bg-surface);box-shadow:var(--composer-shadow)}.chat-input-wrapper input,.chat-input-wrapper textarea{color:var(--text-primary)}.send-btn{background:var(--gradient-primary);color:var(--color-on-accent);box-shadow:var(--shadow-button)}.send-btn:not(:disabled):hover{background:var(--gradient-primary-hover);color:var(--color-on-accent)}.send-btn.stop{background:var(--color-danger);color:#fff;box-shadow:0 5px 14px #ef444433}.send-btn.stop:hover{background:color-mix(in srgb,var(--color-danger) 84%,#000)}.composer-left-actions,.composer-right-actions{display:flex;flex:0 0 auto;align-items:center;gap:7px}.plus-menu-container{position:relative;display:flex;align-items:center}.composer-icon-btn{display:grid;flex:0 0 auto;place-items:center;width:38px;height:38px;padding:0;border:1px solid transparent;border-radius:11px;background:transparent;color:var(--text-muted);font-size:.9rem;cursor:pointer;transition:color .16s ease,background .16s ease,border-color .16s ease,transform .16s ease}.composer-icon-btn:hover,.composer-icon-btn.active{border-color:var(--border-subtle);background:var(--overlay-subtle);color:var(--accent-text)}.composer-icon-btn:active{transform:scale(.96)}.composer-icon-btn.microphone-btn.recording{border-color:#ef444440;background:#ef44441a;color:var(--color-danger);animation:mic-pulse 1.2s ease-in-out infinite alternate}@keyframes mic-pulse{to{box-shadow:0 0 0 5px #ef444414}}.composer-tools-menu{position:absolute;z-index:130;bottom:calc(100% + 13px);left:0;display:flex;flex-direction:column;gap:4px;width:min(290px,calc(100vw - 32px));padding:10px;border:1px solid var(--border-subtle);border-radius:14px;background:var(--bg-surface);box-shadow:0 18px 45px #02181638;animation:tools-pop-in .15s ease-out both}@keyframes tools-pop-in{0%{opacity:0;transform:translateY(5px) scale(.985)}to{opacity:1;transform:translateY(0) scale(1)}}.composer-tools-header{display:flex;flex-direction:column;gap:2px;padding:7px 9px 10px;border-bottom:1px solid var(--border-subtle)}.composer-tools-header strong{color:var(--text-primary);font-size:.76rem}.composer-tools-header span{color:var(--text-muted);font-size:.61rem}.composer-tool-item{display:flex;align-items:center;gap:10px;width:100%;padding:8px;border:1px solid transparent;border-radius:9px;background:transparent;color:var(--text-primary);text-align:left;cursor:pointer;transition:background .15s ease,border-color .15s ease}.composer-tool-item:hover{border-color:var(--border-subtle);background:var(--overlay-faint)}.composer-tool-item>span:last-child{display:flex;flex-direction:column;gap:2px}.composer-tool-item strong{font-size:.67rem}.composer-tool-item small{color:var(--text-muted);font-size:.56rem}.tool-item-icon{display:grid;flex:0 0 auto;place-items:center;width:34px;height:34px;border-radius:10px;font-size:.78rem}.tool-item-icon.blue{background:#3b82f61f;color:#60a5fa}.tool-item-icon.purple{background:#a855f71f;color:#c084fc}.tool-item-icon.orange{background:#f973161f;color:#fb923c}.tool-item-icon.green{background:#10b9811f;color:#34d399}.composer-attachments{display:flex;flex-wrap:wrap;gap:7px;margin:0 0 8px}.attachment-chip{display:inline-flex;align-items:center;gap:7px;max-width:min(260px,100%);min-height:34px;padding:4px 6px 4px 9px;border:1px solid var(--border-subtle);border-radius:9px;background:var(--bg-surface);color:var(--text-secondary);box-shadow:0 3px 9px #031e1b0f}.attachment-icon{display:grid;flex:0 0 auto;place-items:center;width:23px;height:23px;border-radius:6px;background:var(--selected-fill);color:var(--accent-text);font-size:.65rem}.attachment-name{overflow:hidden;font-size:.61rem;font-weight:650;text-overflow:ellipsis;white-space:nowrap}.attachment-chip>button{display:grid;flex:0 0 auto;place-items:center;width:24px;height:24px;border:0;border-radius:6px;background:transparent;color:var(--text-muted);cursor:pointer}.attachment-chip>button:hover{background:#ef44441a;color:var(--color-danger)}.chat-input-container :focus-visible,.chat-sessions-panel :focus-visible{outline:2px solid var(--accent-text);outline-offset:2px}.chat-input-container .chat-input-wrapper input:focus-visible,.chat-input-container .chat-input-wrapper textarea:focus-visible{outline:none;outline-offset:0;box-shadow:none}@media(max-width:600px){.chat-header{padding-right:13px;padding-left:11px}.chat-header-tools{gap:5px}.messages-viewport{padding:18px 12px 12px}.chat-bubble,.chat-bubble-stack.user{max-width:94%}.chat-bubble.user{padding:13px 14px;font-size:.92rem}.chat-bubble.assistant{font-size:.92rem}.chat-input-container{padding:9px 11px calc(9px + env(safe-area-inset-bottom,0px))}.chat-input-wrapper{gap:5px;padding:5px 6px 5px 8px;border-radius:15px}.chat-input-wrapper input,.chat-input-wrapper textarea{min-width:0;font-size:.9rem}.composer-ghost-overlay{min-width:0;font-size:.9rem;padding:8px 0}.composer-icon-btn{width:35px;height:35px}.send-btn{width:38px;height:38px}.composer-tools-menu{left:0;width:min(320px,calc(100vw - 24px));max-height:min(68dvh,480px);overflow-y:auto;overscroll-behavior:contain}.composer-tool-item{min-height:48px;padding:8px 10px}.composer-tool-item strong{font-size:.78rem}.composer-tool-item small{font-size:.68rem}.composer-attachments{flex-direction:column;align-items:stretch}.attachment-chip{width:100%;max-width:100%}}@media(prefers-reduced-motion:reduce){.composer-tools-menu,.composer-icon-btn.microphone-btn.recording{animation:none}.thinking-dot{animation:none!important;opacity:1;transform:scale(1)}}.quiz-container{display:flex;flex-direction:column;height:100%;background:transparent}.quiz-topics-loading{display:flex;justify-content:center;padding:20px}:root[data-theme=app] .quiz-container{--quiz-canvas: var(--bg-page);--quiz-surface: var(--bg-surface);--quiz-surface-soft: var(--bg-input);--quiz-ink: var(--text-primary);--quiz-muted: var(--text-muted);--quiz-border: var(--border-subtle);--quiz-teal: var(--color-primary-light);background:var(--bg-canvas)}:root[data-theme=app] .quiz-header,:root[data-theme=app] .stage-card,:root[data-theme=app] .question-card,:root[data-theme=app] .results-card{background:var(--bg-surface)}:root[data-theme=app] .quiz-container,:root[data-theme=custom] .quiz-container{--quiz-canvas: var(--bg-page);--quiz-surface: var(--bg-surface);--quiz-surface-soft: var(--bg-input);--quiz-ink: var(--text-primary);--quiz-muted: var(--text-muted);--quiz-border: var(--border-subtle);--quiz-teal: var(--color-primary);background:var(--bg-canvas);color:var(--text-primary)}:root[data-theme=app] .quiz-container .quiz-header,:root[data-theme=app] .quiz-container .stage-card,:root[data-theme=app] .quiz-container .question-card,:root[data-theme=app] .quiz-container .results-card,:root[data-theme=custom] .quiz-container .quiz-header,:root[data-theme=custom] .quiz-container .stage-card,:root[data-theme=custom] .quiz-container .question-card,:root[data-theme=custom] .quiz-container .results-card{background:var(--bg-surface);color:var(--text-primary);border-color:var(--border-subtle)}.quiz-container .btn-primary{background:var(--gradient-primary);color:#fff;border-color:transparent;box-shadow:var(--shadow-button)}.quiz-container .btn-primary:hover:not(:disabled){background:var(--gradient-primary-hover);box-shadow:var(--shadow-button)}.quiz-container .btn-ghost{background:#fff;color:var(--color-primary);border-color:var(--border-focus);box-shadow:0 3px 10px #1821260f}.quiz-container .btn-ghost:hover:not(:disabled){background:var(--bg-surface-hover);color:var(--color-primary-hover);border-color:var(--color-primary);box-shadow:var(--shadow-button)}.quiz-empty-icon{display:grid;place-items:center;width:3.5rem;height:3.5rem;margin:0 auto 1rem;border-radius:14px;background:color-mix(in srgb,var(--color-primary) 10%,transparent);color:var(--color-primary);font-size:1.45rem}.quiz-header{background:linear-gradient(180deg,var(--bg-card) 0%,var(--hero-fade) 100%);border-bottom:1px solid var(--border-subtle);padding:1.5rem;flex-shrink:0}.quiz-header-content{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;gap:2rem;width:100%}.quiz-title-group h1{font-size:1.75rem;font-weight:700;color:var(--text-primary);margin:0 0 .25rem;display:flex;align-items:center;gap:.75rem}.quiz-title-group h1 i{color:var(--color-primary)}.quiz-title-group p{font-size:.875rem;color:var(--text-muted);margin:0}.quiz-main{flex:1;display:flex;flex-direction:column;align-items:center;padding:2rem;max-width:1000px;margin:0 auto;width:100%}.quiz-stage{width:100%;animation:stageSlideIn .4s ease-out}@keyframes stageSlideIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.topic-stage{max-width:700px}.recent-topics-list{display:flex;flex-direction:column;gap:.75rem;margin:1.5rem 0;max-height:300px;overflow-y:auto;padding-right:8px}.topic-item{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;background:var(--overlay-faint);border:1px solid var(--border-subtle);border-radius:12px;transition:all .2s ease}.topic-item:hover{background:var(--overlay-subtle);border-color:var(--color-primary)}.topic-name{color:var(--text-primary);font-weight:600;font-size:.95rem;flex:1;margin-right:1rem}.custom-topic-box{display:flex;gap:1rem}.custom-topic-box input{flex:1}.difficulty-stage{max-width:800px}.difficulty-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.25rem;margin-top:1.5rem}.difficulty-card{background:var(--overlay-faint);border:2px solid var(--border-subtle);border-radius:16px;padding:1.5rem;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;gap:1rem}.difficulty-card.locked{opacity:.72;cursor:not-allowed;filter:saturate(.7)}.difficulty-card.locked:hover{border-color:var(--border-subtle);transform:none}.difficulty-lock{display:inline-flex;align-items:center;gap:.35rem;margin-top:.75rem;color:var(--accent-soft-text);font-size:.78rem;font-weight:700}.difficulty-card:hover{transform:translateY(-4px);border-color:var(--border-overlay);background:var(--overlay-subtle)}.difficulty-card.active{background:color-mix(in srgb,var(--color-accent) 10%,transparent);border-color:var(--color-primary);box-shadow:0 10px 30px color-mix(in srgb,var(--color-accent) 15%,transparent)}.difficulty-card:focus-visible{outline:2.5px solid var(--color-primary);outline-offset:2px}.diff-header{display:flex;justify-content:space-between;align-items:center}.diff-header i{font-size:1.5rem}.difficulty-card h3{margin:0;color:var(--text-primary);font-size:1.2rem}.difficulty-card p{margin:0;color:var(--text-muted);font-size:.85rem;line-height:1.4}.back-btn{background:transparent;border:none;color:var(--text-muted);font-size:.9rem;cursor:pointer;display:flex;align-items:center;gap:.5rem;padding:0;transition:color .2s}.back-btn:hover{color:var(--text-primary)}.quiz-stage-active{max-width:800px}.quiz-status-bar{margin-bottom:2rem}.progress-bar{width:100%;height:8px;background:var(--overlay-subtle);border-radius:4px;overflow:hidden;margin-bottom:.75rem}.progress-fill{height:100%;background:linear-gradient(90deg,var(--color-primary),var(--color-accent));transition:width .4s cubic-bezier(.4,0,.2,1)}.progress-labels{display:flex;justify-content:space-between;align-items:center;color:var(--text-muted);font-size:.9rem;font-weight:500}.question-header{display:flex;gap:1.25rem;margin-bottom:2rem}.question-number{background:var(--gradient-primary);color:var(--text-primary);font-size:.85rem;font-weight:800;width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:0 4px 12px var(--color-primary-glow)}.question-text{font-size:1.35rem;color:var(--text-primary);margin:0;line-height:1.5;font-weight:600}.options-list{display:flex;flex-direction:column;gap:.875rem;margin-bottom:2.5rem}.option-button{display:flex;align-items:center;gap:1.25rem;padding:1.125rem 1.5rem;background:var(--overlay-faint);border:1px solid var(--border-subtle);border-radius:14px;color:var(--text-primary);cursor:pointer;transition:all .2s 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i{color:var(--color-primary);font-size:.85rem}.watch-button{display:inline-flex;align-items:center;gap:.5rem;padding:.875rem 1.5rem;background:var(--gradient-primary);border:none;border-radius:var(--radius-sm);color:var(--text-primary);cursor:pointer;font-size:.95rem;font-weight:600;text-decoration:none;transition:all .2s ease;box-shadow:0 4px 14px color-mix(in srgb,var(--color-accent) 30%,transparent)}.watch-button:hover{background:var(--gradient-primary-hover);transform:translateY(-2px);box-shadow:0 6px 18px color-mix(in srgb,var(--color-accent) 42%,transparent)}.toast-container{position:fixed;bottom:2rem;right:2rem;display:flex;flex-direction:column;gap:1rem;z-index:9999;pointer-events:none}.materials-main::-webkit-scrollbar{width:6px}.materials-main::-webkit-scrollbar-track{background:transparent}.materials-main::-webkit-scrollbar-thumb{background:var(--scrollbar-thumb);border-radius:3px}.materials-main::-webkit-scrollbar-thumb:hover{background:var(--overlay-strong)}@media(max-width:768px),(pointer:coarse){.delete-material-btn{opacity:1!important;background:var(--popover-bg);border-color:var(--border-overlay);width:40px;height:40px;top:8px;right:8px}.material-card:active{transform:scale(.98)}}@media(max-width:850px){.materials-main{padding-bottom:6rem}}@media(max-width:768px){.materials-header{padding:1.25rem 1rem}.materials-header-content{flex-direction:column;align-items:stretch;gap:1rem}.materials-title-group h1{font-size:1.5rem}.materials-header-content .btn-danger{width:100%;justify-content:center;min-height:44px}.materials-main{padding:1.25rem 1rem 6rem}.search-card{padding:1.5rem 1.25rem;border-radius:16px}.materials-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1.25rem}.undo-banner{width:calc(100% - 2rem);margin:.75rem auto 0;padding:.75rem 1rem;font-size:.875rem;flex-wrap:wrap}.undo-banner span{flex:1 1 200px}}@media(max-width:600px){.view-toggle{width:100%;margin-bottom:1.5rem;display:flex;padding:.375rem;background:var(--bg-card);border-radius:14px}.view-toggle button{flex:1;min-width:0;min-height:44px;font-size:.9rem;font-weight:600;justify-content:center;border-radius:10px}.search-card-icon{font-size:2.25rem;margin-bottom:.75rem}.search-subtitle{margin-bottom:1.5rem;font-size:.875rem;text-align:center;padding:0 .5rem}.search-input-wrapper{flex-direction:column;gap:.75rem}.search-input{width:100%;font-size:16px;padding:.875rem 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1rem}.empty-icon{font-size:2.75rem}.modal-overlay{padding:0;align-items:flex-end}.modal-content{max-width:100%;border-radius:20px 20px 0 0;max-height:92vh;border-bottom:none}.modal-close{top:.75rem;right:.75rem;width:40px;height:40px}.modal-info,.modal-document{padding:1.5rem 1.25rem}.modal-document h2,.modal-info h2{font-size:1.15rem}.modal-actions button,.modal-actions a{width:100%;min-height:48px;font-size:.95rem}.confirm-dialog{padding:1.5rem 1.25rem;border-radius:20px 20px 0 0;max-width:100%}.confirm-actions{flex-direction:column;gap:.625rem}.confirm-actions .btn{width:100%;min-height:48px}}@media(max-width:480px){.materials-header{padding:1rem .875rem}.materials-main{padding:1rem .75rem 6rem}.results-header{flex-direction:column;align-items:flex-start;gap:.5rem}.results-header h3{font-size:1.1rem}.toast-container{bottom:5.5rem;right:.75rem;left:.75rem}.toast{width:100%}}.materials-container{--library-canvas: #f4f6f2;--library-surface: #ffffff;--library-soft: #f7faf8;--library-ink: #182126;--library-muted: #687579;--library-border: rgba(24, 33, 38, .11);--library-teal: #0f766e;--library-accent: var(--color-primary-light);background:radial-gradient(760px 440px at 90% 0%,rgba(20,184,166,.08),transparent 70%),var(--library-canvas)}.materials-header{background:#fffffcc7;border-bottom-color:var(--library-border);padding:1.6rem 2rem}.materials-title-group h1{color:var(--library-ink);letter-spacing:-.04em}.materials-title-group h1 i,.results-header h3 i,.topic-name{color:var(--library-teal)}.materials-title-group p,.search-subtitle,.search-info-text{color:var(--library-muted)}.materials-main{padding:2.5rem 2rem 4rem}.view-toggle{background:#fffffccc;border-color:var(--library-border);border-radius:14px;box-shadow:0 8px 22px #1821260d}.materials-container .btn-primary,.search-submit-btn{background:linear-gradient(135deg,#0f766e,#155e75);box-shadow:0 6px 16px #0f766e38}.materials-container .btn-primary:hover:not(:disabled),.search-submit-btn:hover:not(:disabled){background:linear-gradient(135deg,#0b5f59,#124e63);box-shadow:0 9px 22px #0f766e4d}.materials-container .btn-ghost{background:#fff;color:var(--library-teal);border-color:#0f766e38}.materials-container .btn-ghost:hover:not(:disabled){background:#eef7f3;color:#155e75;border-color:#0f766e66}.search-card{background:#fffffcf0;border-color:var(--library-border);border-radius:20px;box-shadow:0 18px 45px #18212614}.search-card-icon{color:var(--library-teal)}.search-card h2,.results-header h3,.topic-group-name,.material-details h4,.pdf-details h4{color:var(--library-ink)}.search-input{background:var(--library-soft);border-color:var(--library-border);color:var(--library-ink)}.search-input:focus{background:#fff;border-color:var(--library-teal);box-shadow:0 0 0 3px #0f766e1f}.topic-group-title{border-left-color:var(--library-teal)}.material-card{background:#fffffceb;border-color:var(--library-border);border-radius:16px;box-shadow:0 8px 24px #1821260d}.material-card:hover{background:#fff;border-color:#0f766e59;box-shadow:0 16px 32px #1821261a}.play-overlay{background:#0f766e61}.material-card:hover .play-overlay{background:#0f766e94}.pdf-icon-wrapper{color:var(--library-accent)}.empty-icon{color:var(--library-teal)}.empty-state h3{color:var(--library-ink)}.empty-state p,.suggestions-label{color:var(--library-muted)}.suggestion-tag{background:#fff;border-color:var(--library-border);color:var(--library-ink)}.suggestion-tag:hover{border-color:var(--library-teal);background:#eef7f3;color:var(--library-teal)}@media(max-width:640px){.materials-header{padding:1.1rem 1rem}.materials-main{padding:1.2rem 1rem 3rem}}:root[data-theme=app] .materials-container{--library-canvas: var(--bg-page);--library-surface: var(--bg-surface);--library-soft: var(--bg-input);--library-ink: var(--text-primary);--library-muted: var(--text-muted);--library-border: var(--border-subtle);--library-teal: var(--color-primary-light);background:var(--bg-canvas)}:root[data-theme=app] .materials-header,:root[data-theme=app] .view-toggle,:root[data-theme=app] .search-card,:root[data-theme=app] .material-card,:root[data-theme=app] .suggestion-tag{background:var(--bg-surface)}:root[data-theme=app] .materials-container,:root[data-theme=custom] .materials-container{--library-canvas: var(--bg-page);--library-surface: var(--bg-surface);--library-soft: var(--bg-input);--library-ink: var(--text-primary);--library-muted: var(--text-muted);--library-border: var(--border-subtle);--library-teal: var(--color-primary);background:var(--bg-canvas);color:var(--text-primary)}:root[data-theme=app] .materials-container .materials-header,:root[data-theme=app] .materials-container .view-toggle,:root[data-theme=app] .materials-container .search-card,:root[data-theme=app] .materials-container .material-card,:root[data-theme=app] .materials-container .suggestion-tag,:root[data-theme=custom] .materials-container .materials-header,:root[data-theme=custom] .materials-container .view-toggle,:root[data-theme=custom] .materials-container .search-card,:root[data-theme=custom] .materials-container .material-card,:root[data-theme=custom] .materials-container .suggestion-tag{background:var(--bg-surface);color:var(--text-primary);border-color:var(--border-subtle)}:root[data-theme=app] .materials-container .search-input,:root[data-theme=custom] .materials-container .search-input{background:var(--bg-input);color:var(--text-primary);border-color:var(--border-subtle)}.materials-container{--shelf-green: #174b42;--shelf-mint: #b9e6d3;--shelf-orange: #f4a261;--shelf-ink: var(--library-ink);--shelf-muted: var(--library-muted)}.materials-title-group h1{display:block;font-family:Poppins,sans-serif;font-size:clamp(1.75rem,3vw,2.3rem);font-weight:700;line-height:1.12}.materials-eyebrow,.library-welcome-kicker{display:inline-flex;align-items:center;gap:7px;margin-bottom:8px;color:var(--library-teal);font-size:.65rem;font-weight:800;letter-spacing:.11em;text-transform:uppercase}.materials-eyebrow i{color:#e69555}.materials-title-group p{font-size:.88rem}.library-view>.results-header{margin:1.8rem 0 .9rem}.library-view .results-header h3{font-family:Poppins,sans-serif;font-size:1.1rem;font-weight:700}.library-welcome{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(210px,.72fr);grid-template-rows:1fr auto;min-height:275px;overflow:hidden;padding:26px 30px 0;border:1px solid rgba(23,75,66,.18);border-radius:16px;background:linear-gradient(110deg,#fffffffa,#f8faf4f5 54%,#e6f2e8f0);box-shadow:0 14px 34px #1821260f}.library-welcome-copy{position:relative;z-index:1;align-self:center;padding:0 0 22px}.library-welcome-kicker{margin-bottom:11px;color:#bd6f39}.library-welcome-copy h2{margin:0;color:#183c36;font-family:Poppins,sans-serif;font-size:clamp(1.75rem,3vw,2.3rem);font-weight:700;line-height:1.12;letter-spacing:-.035em}.library-welcome-copy p{max-width:380px;margin:10px 0 17px;color:#5a6d68;font-size:.82rem;line-height:1.55}.library-welcome-copy .btn{min-height:40px;border-radius:9px}.library-welcome-art{position:relative;min-height:170px;align-self:stretch}.shelf-book{position:absolute;bottom:26px;display:grid;place-items:center;width:76px;height:138px;border:1px solid rgba(255,255,255,.3);border-radius:7px 9px 8px 4px;box-shadow:8px 12px 20px #1c3a312e,inset 5px 0 #ffffff26;color:#ffffffe0;font-size:1.7rem;transform-origin:bottom center}.shelf-book-one{right:135px;z-index:2;height:157px;background:linear-gradient(155deg,#397c68,#174b42 75%);transform:rotate(-11deg)}.shelf-book-two{right:74px;z-index:3;height:130px;background:linear-gradient(155deg,#e3a26f,#bd684a 82%);transform:rotate(3deg)}.shelf-book-three{right:22px;z-index:1;height:146px;background:linear-gradient(155deg,#82986d,#4e6748 82%);transform:rotate(12deg)}.shelf-orbit{position:absolute;right:8px;bottom:35px;width:240px;height:130px;border:1px solid rgba(23,75,66,.16);border-radius:50%;transform:rotate(-15deg)}.library-stats{grid-column:1 / -1;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));padding:14px 0 16px;border-top:1px solid rgba(23,75,66,.13)}.library-stats>div{display:flex;align-items:baseline;gap:8px;min-width:0}.library-stats>div+div{padding-left:18px;border-left:1px solid rgba(23,75,66,.13)}.library-stats strong{color:#1d4a40;font-size:1rem;font-variant-numeric:tabular-nums}.library-stats span{color:#637670;font-size:.68rem}.library-toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:21px}.library-search{display:flex;align-items:center;gap:10px;width:min(100%,360px);min-height:42px;padding:0 12px;border:1px solid var(--library-border);border-radius:9px;background:var(--library-surface);color:var(--library-muted);transition:border-color .18s ease,box-shadow .18s ease}.library-search:focus-within{border-color:var(--library-teal);box-shadow:0 0 0 3px color-mix(in srgb,var(--library-teal) 12%,transparent)}.library-search>i{flex:0 0 auto;font-size:.78rem}.library-search input{width:100%;min-width:0;padding:0;border:0;outline:0;background:transparent;color:var(--library-ink);font:inherit;font-size:.75rem}.library-search input::placeholder{color:var(--library-muted)}.library-search input::-webkit-search-cancel-button{display:none}.library-search button{display:grid;flex:0 0 auto;place-items:center;width:26px;height:26px;border:0;border-radius:6px;background:transparent;color:var(--library-muted);cursor:pointer}.library-search button:hover{background:var(--library-soft);color:var(--library-ink)}.library-filters{display:flex;align-items:center;gap:4px;padding:4px;border:1px solid var(--library-border);border-radius:10px;background:var(--library-surface)}.library-filters button{display:inline-flex;align-items:center;gap:7px;min-height:32px;padding:0 10px;border:0;border-radius:7px;background:transparent;color:var(--library-muted);font:inherit;font-size:.66rem;font-weight:700;cursor:pointer;transition:background .18s ease,color .18s ease}.library-filters button:hover{color:var(--library-ink)}.library-filters button.active{background:#e4f1eb;color:#175b4f}.library-filters button span{display:inline-grid;place-items:center;min-width:17px;height:17px;padding:0 4px;border-radius:99px;background:#174b4214;font-size:.58rem;font-variant-numeric:tabular-nums}.library-filter-empty{display:flex;flex-direction:column;align-items:center;gap:8px;padding:46px 20px;border:1px dashed var(--library-border);border-radius:12px;color:var(--library-muted);text-align:center}.library-filter-empty>i{margin-bottom:4px;color:var(--library-teal);font-size:1.2rem}.library-filter-empty strong{color:var(--library-ink);font-size:.9rem}.library-filter-empty>span{font-size:.75rem}.library-filter-empty .btn{margin-top:8px}.topic-group-header{padding-bottom:10px;border-bottom:1px solid var(--library-border)}.topic-group-title{border-left:0;padding-left:0}.topic-group-name{font-family:Poppins,sans-serif;font-size:.98rem}.topic-quiz-btn{min-height:34px}.materials-grid{grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:14px}.material-card{min-height:188px;border-radius:12px;box-shadow:0 5px 16px #1821260b;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}.material-card:focus-visible{outline:3px solid color-mix(in srgb,var(--library-teal) 45%,transparent);outline-offset:3px}.material-card:hover{transform:translateY(-3px);box-shadow:0 13px 25px #1821261a}.material-card.pdf-type{border-style:solid}.pdf-card-content{align-items:stretch;gap:15px;padding:15px}.pdf-cover{position:relative;display:flex;flex:0 0 96px;flex-direction:column;align-items:flex-start;justify-content:space-between;min-height:148px;overflow:hidden;padding:12px 10px;border:1px solid rgba(255,255,255,.2);border-radius:6px 9px 9px 5px;background:linear-gradient(145deg,transparent 48%,rgba(255,255,255,.08) 49% 51%,transparent 52%),linear-gradient(155deg,#3c826d,#174b42 82%);box-shadow:inset 5px 0 #ffffff21,4px 7px 12px #13332c26;color:#f4f5e7}.pdf-cover:after{position:absolute;right:-22px;bottom:-28px;width:88px;height:88px;border:1px solid rgba(255,255,255,.24);border-radius:50%;content:""}.pdf-cover-mark{font-size:1rem}.pdf-cover-label{max-width:70px;font-size:.5rem;font-weight:800;letter-spacing:.12em;line-height:1.5}.pdf-cover-rule{width:28px;height:2px;background:var(--shelf-orange)}.pdf-cover-art{position:absolute;right:8px;bottom:9px;color:#ffffffc7;font-size:1.1rem}.pdf-details{justify-content:flex-start;gap:7px;padding:2px 0}.material-card-meta{display:flex;align-items:center;gap:7px;min-width:0}.material-card-meta>span{overflow:hidden;color:var(--library-teal);font-size:.62rem;font-weight:700;text-overflow:ellipsis;white-space:nowrap}.pdf-details h4,.material-details h4{margin:0;font-size:.88rem;font-weight:700;line-height:1.4}.pdf-snippet{display:-webkit-box;margin:0;font-size:.68rem;line-height:1.45;-webkit-line-clamp:2}.pdf-details .channel,.material-details .channel{font-size:.62rem}.material-card-action{display:inline-flex;align-items:center;gap:6px;margin-top:auto;color:var(--library-teal);font-size:.64rem;font-weight:750}.material-thumbnail{aspect-ratio:16 / 8.5}.material-details{gap:8px;padding:13px 15px 15px}.material-media-label{display:inline-flex;align-items:center;gap:6px;color:#b45442;font-size:.57rem;font-weight:800;letter-spacing:.08em}.delete-material-btn{opacity:0}.material-card:focus-within .delete-material-btn,.material-card:hover .delete-material-btn{opacity:1}.reading-modal{display:flex;flex-direction:column;width:100%;min-height:min(82vh,720px);background:var(--bg-card)}.modal-content:has(.reading-modal){width:min(1120px,100%);max-width:1120px;max-height:92vh}.modal-content:has(.reading-modal) .modal-body{flex:1;min-height:0}.reader-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:82px;padding:16px 66px 16px 22px;border-bottom:1px solid var(--border-subtle)}.reader-heading>div{min-width:0}.reader-heading>div>span{color:var(--color-primary);font-size:.58rem;font-weight:800;letter-spacing:.1em}.reader-heading h2{overflow:hidden;margin:4px 0 0;color:var(--text-primary);font-size:.96rem;line-height:1.35;text-overflow:ellipsis;white-space:nowrap}.reader-heading .btn{flex:0 0 auto}.pdf-reader-frame{position:relative;flex:1;min-height:280px;background:#e5e8e4}.pdf-reader-frame 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0;font-size:var(--step-small);color:var(--ink-soft)}._specimen_42zeh_55{margin:0;font-weight:800;letter-spacing:-.05em;line-height:.8;color:var(--ink);white-space:nowrap}._specA_42zeh_64{font-size:min(11vw,170px)}._specB_42zeh_68{font-size:min(9vw,148px)}._word_42zeh_40:last-child ._specimen_42zeh_55{color:var(--accent)}@media(max-width:48rem){._section_42zeh_3{padding:var(--space-section) 0 0}._headCell_42zeh_24{grid-column:1 / 13}._paraCell_42zeh_28{grid-column:1 / 13;margin-top:1.5rem}._words_42zeh_40{grid-template-columns:1fr;height:auto;min-height:0;margin-top:2.5rem;padding-bottom:0}._word_42zeh_40{overflow:hidden;padding:.1em 0 2rem}._specimen_42zeh_55{line-height:1}._specA_42zeh_64{font-size:min(24vw,130px)}._specB_42zeh_68{font-size:min(20vw,110px)}._word_42zeh_40:last-child{background:var(--accent-field);padding:1.5rem var(--margin) 1.5rem;margin-inline:calc(var(--margin) * -1)}._word_42zeh_40:last-child ._caption_42zeh_49{color:var(--footer-soft)}._word_42zeh_40:last-child 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1.5rem;margin-top:4rem;align-items:start}._codeCell_6v0b3_75{grid-column:1 / 7}._libraryCell_6v0b3_79{grid-column:7 / 13}._code_6v0b3_75{margin:0;width:100%;background:var(--ground-step);padding:1.5rem;border:var(--rule) solid var(--ink)}._codeHead_6v0b3_92{font-size:var(--step-small);color:var(--ink-soft);margin-bottom:1rem}._code_6v0b3_75 pre{margin:0;overflow-x:auto;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:var(--step-small);line-height:1.65;color:var(--ink)}._codeCaption_6v0b3_107{margin:1rem 0 0;font-size:var(--step-small);color:var(--ink-soft)}._library_6v0b3_79{margin:0;width:100%;min-height:260px;background:var(--ground-step);padding:1.75rem;border:var(--rule) solid var(--accent)}._libraryCaption_6v0b3_123{margin:0 0 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0;font-size:var(--step-body);line-height:1.55;color:var(--ink-soft);max-width:34ch}._quiz_d9adk_68{position:relative;margin:5rem 0 0 50%;max-width:32rem;background:var(--ground-step);padding:1.75rem;border:var(--rule) solid var(--ink)}._quizMeta_d9adk_77{margin:0 0 .75rem;font-size:var(--step-small);color:var(--accent-strong);font-weight:600}._quizQ_d9adk_84{margin:0 0 1.25rem;font-size:var(--step-body);font-weight:600;line-height:1.4;color:var(--ink)}._options_d9adk_92{display:flex;flex-direction:column;gap:.625rem}._option_d9adk_92{display:flex;align-items:center;gap:.75rem;width:100%;padding:.8rem 1rem;background:var(--ground);color:var(--ink);font:inherit;font-size:var(--step-body);text-align:left;cursor:pointer;transition:transform var(--t-press) var(--ease-out),background-color var(--t-hover) 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