/* Personal Assistant - Design System */

/* ============================================================================
   CSS Custom Properties (Design Tokens)
   ============================================================================ */

:root {
  /* Primary Colors - Cool Slate + Soft Teal */
  --color-primary-50: #f0f9ff;
  --color-primary-100: #e0f2fe;
  --color-primary-200: #bae6fd;
  --color-primary-300: #7dd3fc;
  --color-primary-400: #38bdf8;
  --color-primary-500: #0ea5e9;
  --color-primary-600: #0284c7;
  --color-primary-700: #0369a1;
  --color-primary-800: #075985;
  --color-primary-900: #0c4a6e;

  /* Neutral Colors */
  --color-neutral-50: #f8fafc;
  --color-neutral-100: #f1f5f9;
  --color-neutral-200: #e2e8f0;
  --color-neutral-300: #cbd5e1;
  --color-neutral-400: #94a3b8;
  --color-neutral-500: #64748b;
  --color-neutral-600: #475569;
  --color-neutral-700: #334155;
  --color-neutral-800: #1e293b;
  --color-neutral-900: #0f172a;
  --color-neutral-950: #020617;

  /* Semantic Colors */
  --color-success: #22c55e;
  --color-success-light: #dcfce7;
  --color-warning: #f59e0b;
  --color-warning-light: #fef3c7;
  --color-error: #ef4444;
  --color-error-light: #fee2e2;

  /* Spacing Scale */
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;

  /* Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* Line Heights */
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;

  /* Z-Index Scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-toast: 400;

  /* Layout */
  --sidebar-width: 280px;
  --header-height: 56px;
}

/* Square Mode - Removes all border radius */
.square-mode {
  --radius-sm: 0;
  --radius-md: 0;
  --radius-lg: 0;
  --radius-xl: 0;
  --radius-2xl: 0;
  --radius-full: 0;
}

/* ============================================================================
   Theme: Dark (Default) - Colorless neutral
   ============================================================================ */

:root,
[data-theme="dark"] {
  --bg-primary: var(--color-neutral-900);
  --bg-secondary: var(--color-neutral-800);
  --bg-tertiary: var(--color-neutral-700);
  --bg-elevated: var(--color-neutral-800);
  --bg-hover: var(--color-neutral-700);
  --bg-active: var(--color-neutral-600);

  --text-primary: var(--color-neutral-50);
  --text-secondary: var(--color-neutral-300);
  --text-muted: var(--color-neutral-400);
  --text-inverse: var(--color-neutral-900);

  --border-primary: var(--color-neutral-700);
  --border-secondary: var(--color-neutral-600);

  --accent: var(--color-primary-500);
  --accent-hover: var(--color-primary-400);
  --accent-muted: var(--color-primary-900);

  --input-bg: var(--color-neutral-800);
  --input-border: var(--color-neutral-600);
  --input-focus: var(--color-primary-500);

  --scrollbar-bg: var(--color-neutral-800);
  --scrollbar-thumb: var(--color-neutral-600);
}

/* ============================================================================
   Theme: Light - Colorless neutral
   ============================================================================ */

[data-theme="light"] {
  --bg-primary: var(--color-neutral-50);
  --bg-secondary: var(--color-neutral-100);
  --bg-tertiary: var(--color-neutral-200);
  --bg-elevated: white;
  --bg-hover: var(--color-neutral-100);
  --bg-active: var(--color-neutral-200);

  --text-primary: var(--color-neutral-900);
  --text-secondary: var(--color-neutral-600);
  --text-muted: var(--color-neutral-500);
  --text-inverse: var(--color-neutral-50);

  --border-primary: var(--color-neutral-200);
  --border-secondary: var(--color-neutral-300);

  --accent: var(--color-primary-600);
  --accent-hover: var(--color-primary-700);
  --accent-muted: var(--color-primary-100);

  --input-bg: white;
  --input-border: var(--color-neutral-300);
  --input-focus: var(--color-primary-500);

  --scrollbar-bg: var(--color-neutral-100);
  --scrollbar-thumb: var(--color-neutral-300);
}

/* ============================================================================
   LIGHT THEMES
   ============================================================================ */

/* -- GitHub Light ---------------------------------------------------------- */
[data-theme="github-light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f6f8fa;
  --bg-tertiary: #eaeef2;
  --bg-elevated: #ffffff;
  --bg-hover: #f3f4f6;
  --bg-active: #eaeef2;
  --text-primary: #1f2328;
  --text-secondary: #656d76;
  --text-muted: #8b949e;
  --text-inverse: #ffffff;
  --border-primary: #d0d7de;
  --border-secondary: #bbc0c5;
  --accent: #0969da;
  --accent-hover: #0550ae;
  --accent-muted: #ddf4ff;
  --input-bg: #ffffff;
  --input-border: #d0d7de;
  --input-focus: #0969da;
  --scrollbar-bg: #f6f8fa;
  --scrollbar-thumb: #d0d7de;
}

/* -- One Light ------------------------------------------------------------- */
[data-theme="one-light"] {
  --bg-primary: #fafafa;
  --bg-secondary: #f0f0f0;
  --bg-tertiary: #e5e5e6;
  --bg-elevated: #ffffff;
  --bg-hover: #ebebec;
  --bg-active: #dbdbdc;
  --text-primary: #383a42;
  --text-secondary: #696c77;
  --text-muted: #a0a1a7;
  --text-inverse: #fafafa;
  --border-primary: #e0e0e1;
  --border-secondary: #d0d0d1;
  --accent: #4078f2;
  --accent-hover: #2c62de;
  --accent-muted: #e4ecfd;
  --input-bg: #ffffff;
  --input-border: #d0d0d1;
  --input-focus: #4078f2;
  --scrollbar-bg: #f0f0f0;
  --scrollbar-thumb: #c8c8c9;
}

/* -- Nord Light (Snow Storm) ----------------------------------------------- */
[data-theme="nord-light"] {
  --bg-primary: #eceff4;
  --bg-secondary: #e5e9f0;
  --bg-tertiary: #d8dee9;
  --bg-elevated: #f2f4f8;
  --bg-hover: #dfe3eb;
  --bg-active: #d0d6e1;
  --text-primary: #2e3440;
  --text-secondary: #4c566a;
  --text-muted: #7b88a1;
  --text-inverse: #eceff4;
  --border-primary: #d8dee9;
  --border-secondary: #c9d1e0;
  --accent: #5e81ac;
  --accent-hover: #4c6e96;
  --accent-muted: #d8e3f0;
  --input-bg: #f2f4f8;
  --input-border: #c9d1e0;
  --input-focus: #5e81ac;
  --scrollbar-bg: #e5e9f0;
  --scrollbar-thumb: #c9d1e0;
}

/* -- Solarized Light ------------------------------------------------------- */
[data-theme="solarized-light"] {
  --bg-primary: #fdf6e3;
  --bg-secondary: #eee8d5;
  --bg-tertiary: #e4ddc8;
  --bg-elevated: #fdf6e3;
  --bg-hover: #eee8d5;
  --bg-active: #ddd6c1;
  --text-primary: #657b83;
  --text-secondary: #839496;
  --text-muted: #93a1a1;
  --text-inverse: #fdf6e3;
  --border-primary: #eee8d5;
  --border-secondary: #ddd6c1;
  --accent: #268bd2;
  --accent-hover: #1a6fb0;
  --accent-muted: #e8f1f8;
  --input-bg: #fdf6e3;
  --input-border: #ddd6c1;
  --input-focus: #268bd2;
  --scrollbar-bg: #eee8d5;
  --scrollbar-thumb: #d0cbb7;
}

/* -- Gruvbox Light --------------------------------------------------------- */
[data-theme="gruvbox-light"] {
  --bg-primary: #fbf1c7;
  --bg-secondary: #f2e5bc;
  --bg-tertiary: #e8d8b0;
  --bg-elevated: #fbf1c7;
  --bg-hover: #f2e5bc;
  --bg-active: #ebdbb2;
  --text-primary: #3c3836;
  --text-secondary: #665c54;
  --text-muted: #928374;
  --text-inverse: #fbf1c7;
  --border-primary: #ebdbb2;
  --border-secondary: #d5c4a1;
  --accent: #af3a03;
  --accent-hover: #9d3302;
  --accent-muted: #f9e2c8;
  --input-bg: #fbf1c7;
  --input-border: #d5c4a1;
  --input-focus: #af3a03;
  --scrollbar-bg: #f2e5bc;
  --scrollbar-thumb: #d5c4a1;
}

/* -- Catppuccin Latte ------------------------------------------------------ */
[data-theme="catppuccin-latte"] {
  --bg-primary: #eff1f5;
  --bg-secondary: #e6e9ef;
  --bg-tertiary: #dce0e8;
  --bg-elevated: #ffffff;
  --bg-hover: #e6e9ef;
  --bg-active: #ccd0da;
  --text-primary: #4c4f69;
  --text-secondary: #6c6f85;
  --text-muted: #8c8fa1;
  --text-inverse: #eff1f5;
  --border-primary: #dce0e8;
  --border-secondary: #ccd0da;
  --accent: #8839ef;
  --accent-hover: #7028d4;
  --accent-muted: #ece3fc;
  --input-bg: #ffffff;
  --input-border: #ccd0da;
  --input-focus: #8839ef;
  --scrollbar-bg: #e6e9ef;
  --scrollbar-thumb: #ccd0da;
}

/* -- Material Light -------------------------------------------------------- */
[data-theme="material-light"] {
  --bg-primary: #fafafa;
  --bg-secondary: #f5f5f5;
  --bg-tertiary: #eeeeee;
  --bg-elevated: #ffffff;
  --bg-hover: #f0f0f0;
  --bg-active: #e0e0e0;
  --text-primary: #212121;
  --text-secondary: #616161;
  --text-muted: #9e9e9e;
  --text-inverse: #fafafa;
  --border-primary: #e0e0e0;
  --border-secondary: #cccccc;
  --accent: #0089a1;
  --accent-hover: #006b7d;
  --accent-muted: #ddf4f8;
  --input-bg: #ffffff;
  --input-border: #cccccc;
  --input-focus: #0089a1;
  --scrollbar-bg: #f5f5f5;
  --scrollbar-thumb: #cccccc;
}

/* -- Ayu Light ------------------------------------------------------------- */
[data-theme="ayu-light"] {
  --bg-primary: #fcfcfc;
  --bg-secondary: #f3f4f5;
  --bg-tertiary: #e8eaed;
  --bg-elevated: #ffffff;
  --bg-hover: #eef0f2;
  --bg-active: #dfe1e5;
  --text-primary: #5c6166;
  --text-secondary: #787b80;
  --text-muted: #9da2a6;
  --text-inverse: #fcfcfc;
  --border-primary: #e8eaed;
  --border-secondary: #d4d6d9;
  --accent: #ff9940;
  --accent-hover: #e88326;
  --accent-muted: #fff0e0;
  --input-bg: #ffffff;
  --input-border: #d4d6d9;
  --input-focus: #ff9940;
  --scrollbar-bg: #f3f4f5;
  --scrollbar-thumb: #d4d6d9;
}

/* -- Tokyo Night Light ----------------------------------------------------- */
[data-theme="tokyo-light"] {
  --bg-primary: #d5d6db;
  --bg-secondary: #cbccd1;
  --bg-tertiary: #c0c1c7;
  --bg-elevated: #e1e2e7;
  --bg-hover: #cbccd1;
  --bg-active: #b7b8bd;
  --text-primary: #343b58;
  --text-secondary: #565a6e;
  --text-muted: #9699a3;
  --text-inverse: #d5d6db;
  --border-primary: #c0c1c7;
  --border-secondary: #b0b1b7;
  --accent: #2e7de9;
  --accent-hover: #1a68d1;
  --accent-muted: #d5e5f9;
  --input-bg: #e1e2e7;
  --input-border: #b0b1b7;
  --input-focus: #2e7de9;
  --scrollbar-bg: #cbccd1;
  --scrollbar-thumb: #b0b1b7;
}

/* -- Paper ----------------------------------------------------------------- */
[data-theme="paper"] {
  --bg-primary: #f5f0eb;
  --bg-secondary: #ece7e1;
  --bg-tertiary: #e0dbd5;
  --bg-elevated: #faf8f5;
  --bg-hover: #ece7e1;
  --bg-active: #ddd7d0;
  --text-primary: #3b3228;
  --text-secondary: #6b5f54;
  --text-muted: #998e82;
  --text-inverse: #f5f0eb;
  --border-primary: #e0dbd5;
  --border-secondary: #d1cac3;
  --accent: #6b7280;
  --accent-hover: #545b66;
  --accent-muted: #e8e5e1;
  --input-bg: #faf8f5;
  --input-border: #d1cac3;
  --input-focus: #6b7280;
  --scrollbar-bg: #ece7e1;
  --scrollbar-thumb: #d1cac3;
}

/* ============================================================================
   DARK THEMES
   ============================================================================ */

/* -- Tokyo Night ----------------------------------------------------------- */
[data-theme="tokyo-night"] {
  --bg-primary: #1a1b26;
  --bg-secondary: #16161e;
  --bg-tertiary: #232433;
  --bg-elevated: #1f2031;
  --bg-hover: #292a3c;
  --bg-active: #33354a;
  --text-primary: #c0caf5;
  --text-secondary: #9aa5ce;
  --text-muted: #565f89;
  --text-inverse: #1a1b26;
  --border-primary: #292a3c;
  --border-secondary: #33354a;
  --accent: #7aa2f7;
  --accent-hover: #89b4fa;
  --accent-muted: #283457;
  --input-bg: #16161e;
  --input-border: #33354a;
  --input-focus: #7aa2f7;
  --scrollbar-bg: #16161e;
  --scrollbar-thumb: #33354a;
}

/* -- Dracula --------------------------------------------------------------- */
[data-theme="dracula"] {
  --bg-primary: #282a36;
  --bg-secondary: #21222c;
  --bg-tertiary: #343746;
  --bg-elevated: #2d2f3d;
  --bg-hover: #3a3d4e;
  --bg-active: #44475a;
  --text-primary: #f8f8f2;
  --text-secondary: #bfbfb9;
  --text-muted: #6272a4;
  --text-inverse: #282a36;
  --border-primary: #44475a;
  --border-secondary: #535669;
  --accent: #ff79c6;
  --accent-hover: #ff92d0;
  --accent-muted: #4a2240;
  --input-bg: #21222c;
  --input-border: #44475a;
  --input-focus: #ff79c6;
  --scrollbar-bg: #21222c;
  --scrollbar-thumb: #44475a;
}

/* -- One Dark -------------------------------------------------------------- */
[data-theme="one-dark"] {
  --bg-primary: #282c34;
  --bg-secondary: #21252b;
  --bg-tertiary: #2c313a;
  --bg-elevated: #2d323b;
  --bg-hover: #353b45;
  --bg-active: #3e4451;
  --text-primary: #abb2bf;
  --text-secondary: #828997;
  --text-muted: #5c6370;
  --text-inverse: #282c34;
  --border-primary: #3e4451;
  --border-secondary: #4b5363;
  --accent: #61afef;
  --accent-hover: #79bdf3;
  --accent-muted: #1f3a52;
  --input-bg: #21252b;
  --input-border: #3e4451;
  --input-focus: #61afef;
  --scrollbar-bg: #21252b;
  --scrollbar-thumb: #3e4451;
}

/* -- Nord ------------------------------------------------------------------ */
[data-theme="nord"] {
  --bg-primary: #2e3440;
  --bg-secondary: #3b4252;
  --bg-tertiary: #434c5e;
  --bg-elevated: #353c4a;
  --bg-hover: #434c5e;
  --bg-active: #4c566a;
  --text-primary: #eceff4;
  --text-secondary: #d8dee9;
  --text-muted: #7b88a1;
  --text-inverse: #2e3440;
  --border-primary: #434c5e;
  --border-secondary: #4c566a;
  --accent: #88c0d0;
  --accent-hover: #8fbccd;
  --accent-muted: #2e404a;
  --input-bg: #3b4252;
  --input-border: #4c566a;
  --input-focus: #88c0d0;
  --scrollbar-bg: #3b4252;
  --scrollbar-thumb: #4c566a;
}

/* -- Gruvbox Dark ---------------------------------------------------------- */
[data-theme="gruvbox-dark"] {
  --bg-primary: #282828;
  --bg-secondary: #3c3836;
  --bg-tertiary: #504945;
  --bg-elevated: #32302f;
  --bg-hover: #504945;
  --bg-active: #665c54;
  --text-primary: #ebdbb2;
  --text-secondary: #d5c4a1;
  --text-muted: #928374;
  --text-inverse: #282828;
  --border-primary: #504945;
  --border-secondary: #665c54;
  --accent: #fe8019;
  --accent-hover: #fea34e;
  --accent-muted: #4a2e10;
  --input-bg: #3c3836;
  --input-border: #665c54;
  --input-focus: #fe8019;
  --scrollbar-bg: #3c3836;
  --scrollbar-thumb: #665c54;
}

/* -- Catppuccin Mocha ------------------------------------------------------ */
[data-theme="catppuccin-mocha"] {
  --bg-primary: #1e1e2e;
  --bg-secondary: #181825;
  --bg-tertiary: #2a2b3d;
  --bg-elevated: #24253a;
  --bg-hover: #313244;
  --bg-active: #3b3c52;
  --text-primary: #cdd6f4;
  --text-secondary: #a6adc8;
  --text-muted: #6c7086;
  --text-inverse: #1e1e2e;
  --border-primary: #313244;
  --border-secondary: #45475a;
  --accent: #cba6f7;
  --accent-hover: #d6b8f9;
  --accent-muted: #3a2d52;
  --input-bg: #181825;
  --input-border: #45475a;
  --input-focus: #cba6f7;
  --scrollbar-bg: #181825;
  --scrollbar-thumb: #45475a;
}

/* -- Material Dark --------------------------------------------------------- */
[data-theme="material-dark"] {
  --bg-primary: #212121;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2c2c2c;
  --bg-elevated: #272727;
  --bg-hover: #333333;
  --bg-active: #3c3c3c;
  --text-primary: #eeffff;
  --text-secondary: #b0bec5;
  --text-muted: #546e7a;
  --text-inverse: #212121;
  --border-primary: #333333;
  --border-secondary: #424242;
  --accent: #89ddff;
  --accent-hover: #a5e5ff;
  --accent-muted: #1e3a46;
  --input-bg: #1a1a1a;
  --input-border: #424242;
  --input-focus: #89ddff;
  --scrollbar-bg: #1a1a1a;
  --scrollbar-thumb: #424242;
}

/* -- Ayu Dark -------------------------------------------------------------- */
[data-theme="ayu-dark"] {
  --bg-primary: #0b0e14;
  --bg-secondary: #0d1017;
  --bg-tertiary: #151920;
  --bg-elevated: #111519;
  --bg-hover: #1a1f29;
  --bg-active: #242933;
  --text-primary: #bfbdb6;
  --text-secondary: #868580;
  --text-muted: #565b66;
  --text-inverse: #0b0e14;
  --border-primary: #1a1f29;
  --border-secondary: #242933;
  --accent: #ffb454;
  --accent-hover: #ffc370;
  --accent-muted: #3d2d14;
  --input-bg: #0d1017;
  --input-border: #242933;
  --input-focus: #ffb454;
  --scrollbar-bg: #0d1017;
  --scrollbar-thumb: #242933;
}

/* -- GitHub Dark ----------------------------------------------------------- */
[data-theme="github-dark"] {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --bg-elevated: #1c2128;
  --bg-hover: #21262d;
  --bg-active: #30363d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --text-inverse: #0d1117;
  --border-primary: #30363d;
  --border-secondary: #3d444d;
  --accent: #58a6ff;
  --accent-hover: #79b8ff;
  --accent-muted: #1a3350;
  --input-bg: #161b22;
  --input-border: #30363d;
  --input-focus: #58a6ff;
  --scrollbar-bg: #161b22;
  --scrollbar-thumb: #30363d;
}

/* -- Monokai --------------------------------------------------------------- */
[data-theme="monokai"] {
  --bg-primary: #272822;
  --bg-secondary: #1e1f1c;
  --bg-tertiary: #33342d;
  --bg-elevated: #2d2e28;
  --bg-hover: #3b3c35;
  --bg-active: #464740;
  --text-primary: #f8f8f2;
  --text-secondary: #c5c8c6;
  --text-muted: #75715e;
  --text-inverse: #272822;
  --border-primary: #3b3c35;
  --border-secondary: #4a4b44;
  --accent: #f92672;
  --accent-hover: #fa4d8e;
  --accent-muted: #4a1228;
  --input-bg: #1e1f1c;
  --input-border: #4a4b44;
  --input-focus: #f92672;
  --scrollbar-bg: #1e1f1c;
  --scrollbar-thumb: #4a4b44;
}

/* ============================================================================
   Reset & Base Styles
   ============================================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell,
    'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
  overflow: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* Custom Scrollbar */
/* Scrollbars - Hidden but functional */
::-webkit-scrollbar {
  display: none;
}

* {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

/* ============================================================================
   Layout
   ============================================================================ */

.app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-primary);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow: hidden;
  transition: width var(--transition-normal);
}

.sidebar.collapsed {
  width: 0;
  border-right: none;
}

.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.header {
  height: var(--header-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-primary);
  display: flex;
  align-items: center;
  padding: 0 var(--space-4);
  flex-shrink: 0;
}

.content {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* ============================================================================
   Components: Buttons
   ============================================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: var(--font-medium);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.btn-danger {
  background: var(--color-error);
  color: white;
}

.btn-danger:hover:not(:disabled) {
  background: #dc2626;
}

.btn-icon {
  padding: var(--space-2);
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-sm);
}

.btn-lg {
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-lg);
}

/* ============================================================================
   Components: Inputs
   ============================================================================ */

.input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input:focus {
  outline: none;
  border-color: var(--input-focus);
  box-shadow: 0 0 0 3px var(--accent-muted);
}

.input::placeholder {
  color: var(--text-muted);
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.input-label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
}

.input-error {
  font-size: var(--text-xs);
  color: var(--color-error);
}

.textarea {
  min-height: 100px;
  resize: vertical;
}

/* ============================================================================
   Components: Cards
   ============================================================================ */

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.card-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
}

/* ============================================================================
   Components: Icons
   ============================================================================ */

.icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.icon-sm {
  width: 16px;
  height: 16px;
}

.icon-lg {
  width: 24px;
  height: 24px;
}

/* ============================================================================
   Components: Avatar
   ============================================================================ */

.avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-lg);
  flex-shrink: 0;
  overflow: hidden;
}

.avatar img,
.avatar svg,
.avatar .avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-full);
}

.avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-full);
}

.avatar-sm {
  width: 32px;
  height: 32px;
  font-size: var(--text-base);
}

.avatar-lg {
  width: 48px;
  height: 48px;
  font-size: var(--text-xl);
}

/* Theme-aware identicons - brighten for dark themes */
[data-theme="dark"] .avatar svg,
[data-theme="tokyo-night"] .avatar svg,
[data-theme="dracula"] .avatar svg,
[data-theme="one-dark"] .avatar svg,
[data-theme="nord"] .avatar svg,
[data-theme="gruvbox-dark"] .avatar svg,
[data-theme="catppuccin-mocha"] .avatar svg,
[data-theme="material-dark"] .avatar svg,
[data-theme="ayu-dark"] .avatar svg,
[data-theme="github-dark"] .avatar svg,
[data-theme="monokai"] .avatar svg {
  filter: brightness(1.3) saturate(1.2);
}

/* ============================================================================
   Utilities
   ============================================================================ */

.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.text-center {
  text-align: center;
}

.text-muted {
  color: var(--text-muted);
}

.text-error {
  color: var(--color-error);
}

.text-success {
  color: var(--color-success);
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-1 {
  gap: var(--space-1);
}

.gap-2 {
  gap: var(--space-2);
}

.gap-3 {
  gap: var(--space-3);
}

.gap-4 {
  gap: var(--space-4);
}

.flex-1 {
  flex: 1;
}

.w-full {
  width: 100%;
}

.mt-2 {
  margin-top: var(--space-2);
}

.mt-4 {
  margin-top: var(--space-4);
}

.mb-2 {
  margin-bottom: var(--space-2);
}

.mb-4 {
  margin-bottom: var(--space-4);
}

.p-4 {
  padding: var(--space-4);
}

.p-6 {
  padding: var(--space-6);
}

/* ============================================================================
   Responsive
   ============================================================================ */

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: var(--z-modal);
    width: 85%;
    max-width: 320px;
    transform: translateX(0);
    transition: transform var(--transition-normal);
  }

  .sidebar.collapsed {
    transform: translateX(-100%);
    width: 85%;
  }

  .sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--z-modal) - 1);
  }

  .sidebar-overlay.hidden {
    display: none;
  }
}