/* 
 * Kora Design System — Version 1.0.0
 * Clean Swiss Minimalism for Modern SaaS Webapps
 * Inspired by Notion & Tally
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,300;0,14..32,400;0,14..32,500;0,14..32,600;0,14..32,700;1,14..32,400&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Colors (Light Mode) */
  --color-page: #FFFFFF;
  --color-surface: #FFFFFF;
  --color-surface-subtle: #F7F7F5;
  --color-surface-hover: #EFEDEB;
  --color-surface-active: #E5E3E0;
  --color-sidebar: #F7F7F5;

  --color-border-subtle: #EBEBEA;
  --color-border: #E3E2E0;
  --color-border-strong: #C8C7C5;

  --color-text-1: #111110;
  --color-text-2: #6B6B6A;
  --color-text-3: #9B9B9A;
  --color-text-4: #C4C3C1;
  --color-text-inv: #FFFFFF;

  --color-accent: #2383E2;
  --color-accent-h: #1A74D1;
  --color-accent-subtle: #EBF4FF;
  --color-accent-text: #1056A3;
  --color-accent-border: #BAD7F7;

  --color-primary: #191919;
  --color-primary-h: #2E2E2E;
  --color-primary-text: #FFFFFF;

  /* Semantic Base Colors */
  --color-success: #059669;
  --color-success-subtle: #ECFDF5;
  --color-success-text: #065F46;
  --color-success-border: #A7F3D0;

  --color-warning: #D97706;
  --color-warning-subtle: #FFFBEB;
  --color-warning-text: #92400E;
  --color-warning-border: #FDE68A;

  --color-danger: #DC2626;
  --color-danger-subtle: #FEF2F2;
  --color-danger-text: #991B1B;
  --color-danger-border: #FECACA;

  /* Tag Colors */
  --tag-gray-bg: #F1F1EF;
  --tag-gray-text: #5F5F5E;
  --tag-blue-bg: #EBF4FF;
  --tag-blue-text: #1056A3;
  --tag-green-bg: #ECFDF5;
  --tag-green-text: #065F46;
  --tag-yellow-bg: #FFFBEB;
  --tag-yellow-text: #92400E;
  --tag-orange-bg: #FFF7ED;
  --tag-orange-text: #9A3412;
  --tag-red-bg: #FEF2F2;
  --tag-red-text: #991B1B;
  --tag-pink-bg: #FDF2F8;
  --tag-pink-text: #9D174D;
  --tag-purple-bg: #F5F3FF;
  --tag-purple-text: #5B21B6;
  --tag-teal-bg: #F0FDFA;
  --tag-teal-text: #134E4A;
  --tag-brown-bg: #FAF5F0;
  --tag-brown-text: #7C4B2B;

  /* Fonts */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', ui-monospace, monospace;

  /* Font Weights */
  --weight-light: 300;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* Line Heights */
  --leading-tight: 1.2;
  --leading-snug: 1.35;
  --leading-normal: 1.5;
  --leading-relaxed: 1.65;

  /* Letter Spacing */
  --tracking-tight: -0.025em;
  --tracking-normal: 0em;
  --tracking-wide: 0.025em;
  --tracking-wider: 0.05em;
  --tracking-widest: 0.1em;

  /* Spacing Grid (4px based) */
  --sp-0-5: 2px;
  --sp-1: 4px;
  --sp-1-5: 6px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-8: 32px;
  --sp-10: 40px;
  --sp-12: 48px;
  --sp-16: 64px;
  --sp-20: 80px;
  --sp-24: 96px;

  /* Border Radii */
  --radius-none: 0;
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 10px;
  --radius-2xl: 12px;
  --radius-3xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.12), 0 4px 8px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 32px rgba(0, 0, 0, 0.16), 0 8px 16px rgba(0, 0, 0, 0.06);
  --shadow-focus: 0 0 0 3px rgba(35, 131, 226, 0.25);
  --shadow-focus-d: 0 0 0 3px rgba(220, 38, 38, 0.25);

  /* Transitions */
  --ease-fast: 80ms ease;
  --ease-base: 150ms ease;
  --ease-slow: 250ms ease;
  --ease-spring: 300ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-Index */
  --z-below: -1;
  --z-base: 0;
  --z-raised: 10;
  --z-sticky: 100;
  --z-dropdown: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
  --z-tooltip: 600;

  /* Layout */
  --sidebar-w: 240px;
  --sidebar-w-sm: 56px;
  --topbar-h: 48px;
  --content-max: 900px;
  --content-px: 96px;
  --content-py: 48px;
}

/* Dark Mode Variables Override */
@media (prefers-color-scheme: dark) {
  :root {
    --color-page: #191919;
    --color-surface: #1F1F1F;
    --color-surface-subtle: #252525;
    --color-surface-hover: #2C2C2C;
    --color-surface-active: #333333;
    --color-sidebar: #1F1F1F;

    --color-border-subtle: #2C2C2C;
    --color-border: #333333;
    --color-border-strong: #444444;

    --color-text-1: #F0EFEE;
    --color-text-2: #A8A7A5;
    --color-text-3: #787775;
    --color-text-4: #4A4948;
    --color-text-inv: #111110;

    --color-accent: #4E9EE8;
    --color-accent-h: #68B2FA;
    --color-accent-subtle: rgba(78, 158, 232, 0.15);
    --color-accent-text: #84C0F7;
    --color-accent-border: rgba(78, 158, 232, 0.3);

    --color-primary: #E8E8E6;
    --color-primary-h: #F2F2F0;
    --color-primary-text: #191919;

    --color-success-subtle: rgba(5, 150, 105, 0.15);
    --color-success-text: #34D399;
    --color-success-border: rgba(5, 150, 105, 0.3);

    --color-warning-subtle: rgba(217, 119, 6, 0.15);
    --color-warning-text: #FBBF24;
    --color-warning-border: rgba(217, 119, 6, 0.3);

    --color-danger-subtle: rgba(220, 38, 38, 0.15);
    --color-danger-text: #F87171;
    --color-danger-border: rgba(220, 38, 38, 0.3);

    /* Tag adjustments */
    --tag-gray-bg: rgba(241, 241, 239, 0.1);
    --tag-gray-text: #A8A7A5;
    --tag-blue-bg: rgba(35, 131, 226, 0.15);
    --tag-blue-text: #84C0F7;
    --tag-green-bg: rgba(5, 150, 105, 0.15);
    --tag-green-text: #34D399;
    --tag-yellow-bg: rgba(217, 119, 6, 0.15);
    --tag-yellow-text: #FBBF24;
    --tag-orange-bg: rgba(249, 115, 22, 0.15);
    --tag-orange-text: #FB923C;
    --tag-red-bg: rgba(220, 38, 38, 0.15);
    --tag-red-text: #F87171;
    --tag-pink-bg: rgba(236, 72, 153, 0.15);
    --tag-pink-text: #F472B6;
    --tag-purple-bg: rgba(139, 92, 246, 0.15);
    --tag-purple-text: #A78BFA;
    --tag-teal-bg: rgba(20, 184, 166, 0.15);
    --tag-teal-text: #2DD4BF;
    --tag-brown-bg: rgba(124, 75, 43, 0.15);
    --tag-brown-text: #D9A07E;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 32px rgba(0, 0, 0, 0.6);
  }
}

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

html {
  scroll-behavior: smooth;
  font-size: 14px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-page);
  color: var(--color-text-1);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Respect user prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-1);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

h1 { font-size: 36px; font-weight: var(--weight-bold); margin-bottom: var(--sp-4); }
h2 { font-size: 30px; font-weight: var(--weight-bold); margin-bottom: var(--sp-3); }
h3 { font-size: 24px; margin-bottom: var(--sp-3); }
h4 { font-size: 18px; margin-bottom: var(--sp-2); }
h5 { font-size: 16px; margin-bottom: var(--sp-2); }
h6 { font-size: 14px; margin-bottom: var(--sp-2); }

p {
  margin-bottom: var(--sp-4);
  color: var(--color-text-2);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--ease-fast);
}
a:hover {
  color: var(--color-accent-h);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--color-surface-subtle);
  color: var(--color-danger-text);
  padding: var(--sp-0-5) var(--sp-1-5);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
}

kbd {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: var(--weight-semibold);
  background-color: var(--color-surface);
  color: var(--color-text-3);
  padding: 2px 5px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-strong);
  box-shadow: 0 1px 0 var(--color-border-strong);
}

/* Special Text Classes */
.text-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  color: var(--color-text-3);
  font-weight: var(--weight-bold);
}

.lead {
  font-size: 16px;
  color: var(--color-text-2);
  line-height: var(--leading-relaxed);
}

/* Helpers */
.mb-1 { margin-bottom: var(--sp-1); }
.mb-2 { margin-bottom: var(--sp-2); }
.mb-3 { margin-bottom: var(--sp-3); }
.mb-4 { margin-bottom: var(--sp-4); }
.mb-6 { margin-bottom: var(--sp-6); }
.mb-8 { margin-bottom: var(--sp-8); }
.mt-4 { margin-top: var(--sp-4); }
.mr-2 { margin-right: var(--sp-2); }
.flex { display: flex; }
.flex-1 { flex: 1; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: var(--sp-1); }
.gap-2 { gap: var(--sp-2); }
.gap-3 { gap: var(--sp-3); }
.gap-4 { gap: var(--sp-4); }
.gap-6 { gap: var(--sp-6); }
.font-medium { font-weight: var(--weight-medium); }
.font-semibold { font-weight: var(--weight-semibold); }
.text-sm { font-size: 12px; }
.text-xs { font-size: 11px; }
.text-center { text-align: center; }
.text-2 { color: var(--color-text-2); }
.text-3 { color: var(--color-text-3); }
.w-full { width: 100%; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Grid System */
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--sp-6);
}

.col-1 { grid-column: span 1; }
.col-2 { grid-column: span 2; }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-10 { grid-column: span 10; }
.col-11 { grid-column: span 11; }
.col-12 { grid-column: span 12; }

/* Auto-fit Grids */
.grid-auto-sm {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--sp-6);
}

.grid-auto-md {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--sp-6);
}

.grid-auto-lg {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--sp-6);
}

/* App Shell Layout */
.app {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-w);
  background-color: var(--color-sidebar);
  border-right: 1px solid var(--color-border-subtle);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: var(--z-sticky);
  transition: width var(--ease-slow);
}

.sidebar__header {
  padding: var(--sp-5) var(--sp-6);
  border-bottom: 1px solid var(--color-border-subtle);
}

.sidebar__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-weight: var(--weight-bold);
  font-size: var(--text-lg);
  color: var(--color-text-1);
}

.sidebar__logo-icon {
  width: 28px;
  height: 28px;
  background-color: var(--color-primary);
  color: var(--color-primary-text);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--weight-bold);
}

.sidebar__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--sp-4) 0;
}

.sidebar__section {
  margin-bottom: var(--sp-6);
}

.sidebar__section-label {
  padding: 0 var(--sp-6) var(--sp-2) var(--sp-6);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--color-text-3);
  font-weight: var(--weight-bold);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-6);
  color: var(--color-text-2);
  font-weight: var(--weight-medium);
  font-size: 13px;
  transition: background-color var(--ease-fast), color var(--ease-fast);
  cursor: pointer;
}

.nav-item:hover {
  background-color: var(--color-surface-hover);
  color: var(--color-text-1);
}

.nav-item.active {
  background-color: var(--color-surface-active);
  color: var(--color-text-1);
  font-weight: var(--weight-semibold);
}

.nav-item--sub {
  padding-left: var(--sp-10);
  font-size: 12px;
}

.nav-item__badge {
  margin-left: auto;
  background-color: var(--color-accent-subtle);
  color: var(--color-accent-text);
  padding: 1px 6px;
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: var(--weight-bold);
}

.sidebar__footer {
  padding: var(--sp-4) var(--sp-6);
  border-top: 1px solid var(--color-border-subtle);
  background-color: var(--color-sidebar);
}

.workspace-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.workspace-item__info {
  min-width: 0;
}

.workspace-item__name {
  font-size: 13px;
  font-weight: var(--weight-semibold);
  color: var(--color-text-1);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.workspace-item__sub {
  font-size: 11px;
  color: var(--color-text-3);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background-color: var(--color-page);
}

.topbar {
  height: var(--topbar-h);
  border-bottom: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--sp-6);
  background-color: var(--color-surface);
  position: sticky;
  top: 0;
  z-index: var(--z-raised);
}

.topbar__left, .topbar__right {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

/* Content Layout Architectures */
.content {
  max-width: var(--content-max);
  width: 100%;
  margin: 0 auto;
  padding: var(--content-py) var(--content-px);
  flex: 1;
}

.content--narrow { max-width: 680px; }
.content--wide { max-width: 1200px; }
.content--full { max-width: 100%; }

/* Buttons Component */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: var(--weight-medium);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  padding: 7px 16px;
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  background-color: transparent;
  color: var(--color-text-2);
  transition: background-color var(--ease-fast), border-color var(--ease-fast), color var(--ease-fast), box-shadow var(--ease-fast);
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-primary-text);
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background-color: var(--color-primary-h);
  border-color: var(--color-primary-h);
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text-1);
  border-color: var(--color-border);
  box-shadow: var(--shadow-xs);
}
.btn-secondary:hover {
  background-color: var(--color-surface-hover);
  border-color: var(--color-border-strong);
}

.btn-ghost {
  color: var(--color-text-2);
  border-color: transparent;
}
.btn-ghost:hover {
  background-color: var(--color-surface-hover);
  color: var(--color-text-1);
}

.btn-accent {
  background-color: var(--color-accent-subtle);
  color: var(--color-accent-text);
  border-color: var(--color-accent-border);
}
.btn-accent:hover {
  background-color: var(--color-accent);
  color: var(--color-text-inv);
  border-color: var(--color-accent);
}

.btn-danger {
  background-color: var(--color-danger-subtle);
  color: var(--color-danger-text);
  border-color: var(--color-danger-border);
}
.btn-danger:hover {
  background-color: var(--color-danger);
  color: var(--color-text-inv);
  border-color: var(--color-danger);
}

.btn-danger-ghost {
  color: var(--color-danger-text);
}
.btn-danger-ghost:hover {
  background-color: var(--color-danger-subtle);
}

.btn-success {
  background-color: var(--color-success-subtle);
  color: var(--color-success-text);
  border-color: var(--color-success-border);
}
.btn-success:hover {
  background-color: var(--color-success);
  color: var(--color-text-inv);
  border-color: var(--color-success);
}

/* Button Sizes */
.btn-xs { padding: 3px 8px; font-size: 11px; border-radius: var(--radius-sm); }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-lg { padding: 9px 20px; font-size: 15px; border-radius: var(--radius-lg); }
.btn-xl { padding: 12px 24px; font-size: 16px; border-radius: var(--radius-xl); }

.btn-block { width: 100%; display: flex; }
.btn-icon { padding: 6px; border-radius: var(--radius-full); width: 32px; height: 32px; flex-shrink: 0; }
.btn-icon-sm { width: 24px; height: 24px; padding: 3px; }

/* Loading State */
.btn.loading {
  color: transparent !important;
  pointer-events: none;
  position: relative;
}
.btn.loading::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  top: 50%;
  left: 50%;
  margin-top: -7px;
  margin-left: -7px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.btn[disabled], fieldset[disabled] .btn {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Form Inputs */
.form-group {
  margin-bottom: var(--sp-4);
  display: flex;
  flex-direction: column;
  gap: var(--sp-1-5);
}

.label {
  font-size: 12px;
  font-weight: var(--weight-semibold);
  color: var(--color-text-2);
}

.label--required::after {
  content: " *";
  color: var(--color-danger-text);
}

.input, .select, textarea.input {
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--color-text-1);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  width: 100%;
  transition: border-color var(--ease-base), box-shadow var(--ease-base);
  outline: none;
}

.input:focus, .select:focus {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-focus);
}

.input::placeholder {
  color: var(--color-text-4);
}

.input--error {
  border-color: var(--color-danger-base);
}
.input--error:focus {
  box-shadow: var(--shadow-focus-d);
  border-color: var(--color-danger-base);
}

.helper-text {
  font-size: 11px;
  color: var(--color-text-3);
}

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

.input-wrapper {
  position: relative;
  width: 100%;
}

.input-icon-left {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-3);
  display: flex;
  align-items: center;
}

.input-wrapper .input-icon-left ~ .input {
  padding-left: 32px;
}

.input-icon-right {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-3);
  display: flex;
  align-items: center;
}

.input-wrapper.has-right-icon .input {
  padding-right: 32px;
}

/* Input Groups with addon */
.input-group {
  display: flex;
  width: 100%;
}
.input-addon {
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  color: var(--color-text-2);
  padding: 0 12px;
  display: flex;
  align-items: center;
  font-size: 13px;
  user-select: none;
}
.input-group .input-addon:first-child {
  border-right: none;
  border-top-left-radius: var(--radius-md);
  border-bottom-left-radius: var(--radius-md);
}
.input-group .input-addon:last-child {
  border-left: none;
  border-top-right-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
}
.input-group .input {
  border-radius: 0;
}
.input-group .input:first-child {
  border-top-left-radius: var(--radius-md);
  border-bottom-left-radius: var(--radius-md);
}
.input-group .input:last-child {
  border-top-right-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
}

/* Input Sizes */
.input-sm { padding: 5px 8px; font-size: 12px; }
.input-lg { padding: 11px 16px; font-size: 15px; }

/* Checkbox and Radio styling */
.checkbox-group {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  cursor: pointer;
  user-select: none;
  color: var(--color-text-1);
  font-size: 13px;
}

.checkbox, .radio {
  appearance: none;
  width: 16px;
  height: 16px;
  border: 1px solid var(--color-border-strong);
  background-color: var(--color-surface);
  outline: none;
  cursor: pointer;
  transition: background-color var(--ease-fast), border-color var(--ease-fast), box-shadow var(--ease-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.checkbox { border-radius: var(--radius-xs); }
.radio { border-radius: var(--radius-full); }

.checkbox:focus-visible, .radio:focus-visible {
  box-shadow: var(--shadow-focus);
}

.checkbox:checked {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}
.checkbox:checked::after {
  content: "✓";
  color: var(--color-primary-text);
  font-size: 10px;
  font-weight: var(--weight-bold);
}

.radio:checked {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}
.radio:checked::after {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-text);
}

/* Indeterminate checkbox helper */
.checkbox:indeterminate {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}
.checkbox:indeterminate::after {
  content: "";
  width: 8px;
  height: 2px;
  background-color: var(--color-primary-text);
}

/* Toggle Switch */
.toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  cursor: pointer;
  user-select: none;
}
.toggle input {
  display: none;
}
.toggle__track {
  width: 36px;
  height: 20px;
  background-color: var(--color-border-strong);
  border-radius: var(--radius-full);
  position: relative;
  transition: background-color var(--ease-base);
}
.toggle__thumb {
  width: 16px;
  height: 16px;
  background-color: #FFFFFF;
  border-radius: var(--radius-full);
  position: absolute;
  top: 2px;
  left: 2px;
  transition: transform var(--ease-base);
  box-shadow: var(--shadow-xs);
}
.toggle input:checked + .toggle__track {
  background-color: var(--color-primary);
}
.toggle input:checked + .toggle__track .toggle__thumb {
  transform: translateX(16px);
}
.toggle__label {
  font-size: 13px;
  color: var(--color-text-1);
}

/* Badges & Tags */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: var(--weight-semibold);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  line-height: 1;
}

.badge-gray { background-color: var(--tag-gray-bg); color: var(--tag-gray-text); }
.badge-blue { background-color: var(--tag-blue-bg); color: var(--tag-blue-text); }
.badge-green { background-color: var(--tag-green-bg); color: var(--tag-green-text); }
.badge-yellow { background-color: var(--tag-yellow-bg); color: var(--tag-yellow-text); }
.badge-red { background-color: var(--tag-red-bg); color: var(--tag-red-text); }
.badge-pink { background-color: var(--tag-pink-bg); color: var(--tag-pink-text); }
.badge-purple { background-color: var(--tag-purple-bg); color: var(--tag-purple-text); }

.badge-pill {
  border-radius: var(--radius-full);
  padding: 3px 10px;
}

.badge-dot::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: currentColor;
  display: inline-block;
  margin-right: 4px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  padding: var(--sp-1) var(--sp-2-5);
  border-radius: var(--radius-md);
  color: var(--color-text-1);
}

.tag__close {
  cursor: pointer;
  color: var(--color-text-3);
  font-size: 10px;
  font-weight: var(--weight-bold);
  transition: color var(--ease-fast);
}
.tag__close:hover {
  color: var(--color-danger-text);
}

/* Cards */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-6);
  transition: box-shadow var(--ease-base), border-color var(--ease-base);
}

.card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--sp-4);
  gap: var(--sp-4);
}

.card__title {
  font-size: 15px;
  font-weight: var(--weight-semibold);
  color: var(--color-text-1);
}

.card__description {
  font-size: 12px;
  color: var(--color-text-3);
  margin-top: 2px;
}

.card__footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--sp-3);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--color-border-subtle);
  margin-top: var(--sp-4);
}

.card--raised {
  box-shadow: var(--shadow-sm);
}

.card--interactive {
  cursor: pointer;
  outline: none;
}
.card--interactive:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-md);
}
.card--interactive:focus-visible {
  box-shadow: var(--shadow-focus);
  border-color: var(--color-accent);
}

.card--selected {
  border-color: var(--color-accent);
  background-color: var(--color-accent-subtle);
}

.card--inset {
  background-color: var(--color-surface-subtle);
  border: 1px solid transparent;
}

/* Stat Cards */
.stat-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
  box-shadow: var(--shadow-xs);
}

.stat-card__label {
  font-size: 12px;
  font-weight: var(--weight-semibold);
  color: var(--color-text-3);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.stat-card__value {
  font-size: 28px;
  font-weight: var(--weight-bold);
  color: var(--color-text-1);
}

.stat-card__change {
  font-size: 11px;
  font-weight: var(--weight-medium);
  display: flex;
  align-items: center;
  gap: 2px;
}
.stat-card__change--up { color: var(--color-success); }
.stat-card__change--down { color: var(--color-danger); }

/* Tables Component */
.table-container {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  background-color: var(--color-surface);
}

.table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.table th, .table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--color-border-subtle);
}

.table th {
  background-color: var(--color-surface-subtle);
  font-weight: var(--weight-semibold);
  color: var(--color-text-2);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: var(--tracking-wider);
  user-select: none;
}

.table tr:last-child td {
  border-bottom: none;
}

.table tbody tr {
  transition: background-color var(--ease-fast);
}

.table tbody tr:hover {
  background-color: var(--color-surface-hover);
}

.table tr.selected {
  background-color: var(--color-accent-subtle);
}

.table-sortable th {
  cursor: pointer;
}
.table-sortable th:hover {
  background-color: var(--color-surface-active);
  color: var(--color-text-1);
}

.table tfoot td {
  padding: 12px 16px;
  color: var(--color-text-3);
  font-size: 12px;
  background-color: var(--color-surface-subtle);
  border-top: 1px solid var(--color-border-subtle);
}

/* Tabs Component */
.tabs {
  display: flex;
  flex-direction: column;
  width: 100%;
}

.tabs__list {
  display: flex;
  border-bottom: 1px solid var(--color-border-subtle);
  gap: var(--sp-6);
}

.tab {
  padding: var(--sp-3) 0;
  color: var(--color-text-2);
  font-weight: var(--weight-medium);
  font-size: 14px;
  cursor: pointer;
  position: relative;
  transition: color var(--ease-fast);
  user-select: none;
}

.tab:hover {
  color: var(--color-text-1);
}

.tab.active {
  color: var(--color-text-1);
  font-weight: var(--weight-semibold);
}

.tab.active::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
}

.tabs__content {
  padding: var(--sp-4) 0;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* Pill Tabs variation */
.tabs--pills .tabs__list {
  background-color: var(--color-surface-subtle);
  padding: 4px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-subtle);
  gap: var(--sp-1);
  display: inline-flex;
}

.tabs--pills .tab {
  padding: 6px 16px;
  border-radius: var(--radius-md);
  font-size: 12px;
}
.tabs--pills .tab.active {
  background-color: var(--color-surface);
  box-shadow: var(--shadow-xs);
  color: var(--color-text-1);
}
.tabs--pills .tab.active::after {
  display: none;
}

/* Modals / Dialog Overlay */
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-overlay);
  padding: var(--sp-4);
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 520px;
  overflow: hidden;
  animation: slideUp 0.3s var(--ease-spring);
  display: flex;
  flex-direction: column;
}

@keyframes slideUp {
  from { transform: translateY(12px) scale(0.98); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}

.modal__header {
  padding: var(--sp-5) var(--sp-6);
  border-bottom: 1px solid var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal__title {
  font-size: 16px;
  font-weight: var(--weight-bold);
  color: var(--color-text-1);
}

.modal__close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-3);
  font-size: 12px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  transition: background-color var(--ease-fast), color var(--ease-fast);
}
.modal__close:hover {
  background-color: var(--color-surface-hover);
  color: var(--color-text-1);
}

.modal__body {
  padding: var(--sp-6);
  overflow-y: auto;
  max-height: 70vh;
}

.modal__footer {
  padding: var(--sp-4) var(--sp-6);
  border-top: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface-subtle);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--sp-3);
}

/* Modal Sizes */
.modal--sm { max-width: 400px; }
.modal--lg { max-width: 720px; }
.modal--xl { max-width: 960px; }
.modal--full { max-width: 95vw; height: 90vh; }

/* Dropdown Menu */
.dropdown {
  position: relative;
  display: inline-block;
}

.menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 4px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: 4px;
  min-width: 180px;
  z-index: var(--z-dropdown);
  display: none;
  flex-direction: column;
}

.dropdown.open .menu {
  display: flex;
}

.menu-label {
  padding: 6px 12px;
  font-size: 10px;
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  color: var(--color-text-3);
  letter-spacing: var(--tracking-wider);
}

.menu-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 6px 12px;
  font-size: 13px;
  color: var(--color-text-1);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--ease-fast);
  user-select: none;
}
.menu-item:hover {
  background-color: var(--color-surface-hover);
}

.menu-item__icon {
  color: var(--color-text-2);
  font-size: 14px;
  display: flex;
  align-items: center;
  width: 16px;
}

.menu-item__shortcut {
  margin-left: auto;
  color: var(--color-text-3);
  font-size: 10px;
}

.menu-divider {
  height: 1px;
  background-color: var(--color-border-subtle);
  margin: 4px 0;
}

.menu-item--danger {
  color: var(--color-danger-text);
}
.menu-item--danger:hover {
  background-color: var(--color-danger-subtle);
}

/* Toast Notifications Stack */
.toast-stack {
  position: fixed;
  bottom: var(--sp-6);
  right: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  z-index: var(--z-toast);
  max-width: 380px;
  width: 100%;
}

.toast {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--sp-4);
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  animation: slideIn 0.3s var(--ease-spring);
  position: relative;
}

@keyframes slideIn {
  from { transform: translateY(24px) scale(0.9); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}

.toast__icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: var(--weight-bold);
  flex-shrink: 0;
  margin-top: 2px;
}
.toast__icon--success { background-color: var(--color-success-subtle); color: var(--color-success-text); }
.toast__icon--error { background-color: var(--color-danger-subtle); color: var(--color-danger-text); }

.toast__body {
  flex: 1;
}

.toast__title {
  font-size: 13px;
  font-weight: var(--weight-bold);
  color: var(--color-text-1);
}

.toast__desc {
  font-size: 11px;
  color: var(--color-text-3);
  margin-top: 2px;
}

.toast__close {
  background: none;
  border: none;
  color: var(--color-text-4);
  font-size: 12px;
  cursor: pointer;
  transition: color var(--ease-fast);
}
.toast__close:hover {
  color: var(--color-text-2);
}

/* Inline Alerts */
.alert {
  display: flex;
  gap: var(--sp-3);
  padding: var(--sp-4);
  border-radius: var(--radius-xl);
  border: 1px solid transparent;
  font-size: 13px;
  line-height: var(--leading-relaxed);
  margin-bottom: var(--sp-4);
}

.alert__icon {
  font-size: 16px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.alert__title {
  font-weight: var(--weight-bold);
  margin-bottom: 2px;
  color: var(--color-text-1);
}

.alert--info { background-color: var(--color-accent-subtle); border-color: var(--color-accent-border); color: var(--color-accent-text); }
.alert--warning { background-color: var(--color-warning-subtle); border-color: var(--color-warning-border); color: var(--color-warning-text); }
.alert--success { background-color: var(--color-success-subtle); border-color: var(--color-success-border); color: var(--color-success-text); }
.alert--danger { background-color: var(--color-danger-subtle); border-color: var(--color-danger-border); color: var(--color-danger-text); }

/* Notion-style Callout Blocks */
.callout {
  display: flex;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-5);
  border-radius: var(--radius-xl);
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border-subtle);
  font-size: 13px;
  margin-bottom: var(--sp-4);
}

.callout__emoji {
  font-size: 18px;
  flex-shrink: 0;
}

.callout__body {
  flex: 1;
  color: var(--color-text-1);
}

.callout--info { background-color: var(--color-accent-subtle); border-color: var(--color-accent-border); }
.callout--warning { background-color: var(--color-warning-subtle); border-color: var(--color-warning-border); }

/* Progress Bars */
.progress {
  width: 100%;
  height: 6px;
  background-color: var(--color-border-subtle);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress__bar {
  height: 100%;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

.progress__bar--accent { background-color: var(--color-accent); }
.progress__bar--warning { background-color: var(--color-warning); }

.progress__bar--indeterminate {
  width: 40%;
  position: absolute;
  left: -40%;
  animation: indeterminate 1.5s infinite linear;
}

@keyframes indeterminate {
  0% { left: -40%; }
  50% { left: 100%; width: 40%; }
  100% { left: 100%; width: 0%; }
}

.progress--lg {
  height: 10px;
}

.progress-labeled {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.progress-labeled__top {
  display: flex;
  justify-content: space-between;
}

.progress-label {
  font-size: 12px;
  font-weight: var(--weight-semibold);
  color: var(--color-text-2);
}

/* Avatar Component */
.avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background-color: var(--color-surface-active);
  color: var(--color-text-1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--weight-bold);
  font-size: 12px;
  overflow: hidden;
  user-select: none;
  flex-shrink: 0;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.avatar--xs { width: 20px; height: 20px; font-size: 8px; }
.avatar--sm { width: 24px; height: 24px; font-size: 10px; }
.avatar--md { width: 32px; height: 32px; font-size: 12px; }
.avatar--lg { width: 40px; height: 40px; font-size: 14px; }
.avatar--xl { width: 56px; height: 56px; font-size: 18px; }

.avatar--blue { background-color: var(--tag-blue-bg); color: var(--tag-blue-text); }
.avatar--purple { background-color: var(--tag-purple-bg); color: var(--tag-purple-text); }
.avatar--green { background-color: var(--tag-green-bg); color: var(--tag-green-text); }

.avatar-group {
  display: inline-flex;
  align-items: center;
}

.avatar-group .avatar {
  margin-right: -8px;
  border: 2px solid var(--color-page);
  transition: transform var(--ease-fast), z-index var(--ease-fast);
}

.avatar-group .avatar:hover {
  transform: translateY(-2px);
  z-index: 10;
}

/* Breadcrumb Navigation */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-2);
  font-size: 13px;
}

.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.breadcrumb__link {
  color: var(--color-text-2);
  transition: color var(--ease-fast);
}
.breadcrumb__link:hover {
  color: var(--color-text-1);
}

.breadcrumb__separator {
  color: var(--color-text-4);
  user-select: none;
}

/* Pagination component */
.pagination {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}

.page-btn {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-2);
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: var(--weight-medium);
  width: 28px;
  height: 28px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--ease-fast);
}

.page-btn:hover {
  background-color: var(--color-surface-hover);
  border-color: var(--color-border-strong);
  color: var(--color-text-1);
}

.page-btn.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-text);
  font-weight: var(--weight-bold);
}

.pagination__ellipsis {
  color: var(--color-text-3);
  font-size: 12px;
  width: 28px;
  text-align: center;
  user-select: none;
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--sp-20) var(--sp-6);
  text-align: center;
  background-color: var(--color-surface);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-xl);
}

.empty-state__icon {
  font-size: 48px;
  margin-bottom: var(--sp-4);
  color: var(--color-text-3);
}

.empty-state__title {
  font-size: 16px;
  font-weight: var(--weight-bold);
  color: var(--color-text-1);
  margin-bottom: var(--sp-2);
}

.empty-state__desc {
  font-size: 13px;
  color: var(--color-text-3);
  max-width: 320px;
  margin-bottom: var(--sp-6);
}

/* Skeleton Loaders */
.skeleton {
  background: linear-gradient(90deg, var(--color-surface-subtle) 25%, var(--color-surface-hover) 50%, var(--color-surface-subtle) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-title { height: 24px; width: 60%; }
.skeleton-text { height: 14px; }
.skeleton-w-3-4 { width: 75%; }
.skeleton-w-1-2 { width: 50%; }
.skeleton-w-1-4 { width: 25%; }
.skeleton-w-full { width: 100%; }
.skeleton-avatar-md { width: 32px; height: 32px; border-radius: var(--radius-full); }
.skeleton-card { height: 120px; border-radius: var(--radius-xl); }

/* Command Palette */
.command-palette {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  max-width: 600px;
  width: 100%;
  overflow: hidden;
  animation: slideUp 0.3s var(--ease-spring);
}

.command-input-wrap {
  display: flex;
  align-items: center;
  padding: var(--sp-4) var(--sp-6);
  border-bottom: 1px solid var(--color-border-subtle);
  gap: var(--sp-3);
}

.command-input {
  flex: 1;
  font-family: var(--font-sans);
  font-size: 15px;
  border: none;
  background: none;
  color: var(--color-text-1);
  outline: none;
}

.command-list {
  padding: 8px;
  max-height: 320px;
  overflow-y: auto;
}

.command-group-label {
  padding: 6px 12px;
  font-size: 10px;
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  color: var(--color-text-3);
  letter-spacing: var(--tracking-wider);
}

.command-item {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: background-color var(--ease-fast);
}

.command-item.focused, .command-item:hover {
  background-color: var(--color-surface-hover);
}

.command-item__icon {
  font-size: 16px;
  color: var(--color-text-2);
  width: 20px;
  text-align: center;
}

.command-item__label {
  font-size: 13px;
  font-weight: var(--weight-semibold);
  color: var(--color-text-1);
}

.command-item__sub {
  font-size: 11px;
  color: var(--color-text-3);
  margin-top: 2px;
}

.command-item__shortcut {
  margin-left: auto;
  color: var(--color-text-3);
  font-size: 10px;
}

.command-divider {
  height: 1px;
  background-color: var(--color-border-subtle);
  margin: 6px 0;
}

.command-footer {
  padding: var(--sp-3) var(--sp-6);
  background-color: var(--color-surface-subtle);
  border-top: 1px solid var(--color-border-subtle);
  display: flex;
  gap: var(--sp-4);
}

.command-hint {
  font-size: 11px;
  color: var(--color-text-3);
  display: flex;
  align-items: center;
  gap: 3px;
}

/* Page Header (Notion-style) */
.page-header {
  margin-bottom: var(--sp-8);
  position: relative;
}

.page-header__cover {
  height: 160px;
  margin-left: calc(var(--content-px) * -1);
  margin-right: calc(var(--content-px) * -1);
  margin-top: calc(var(--content-py) * -1);
  margin-bottom: var(--sp-6);
  overflow: hidden;
  position: relative;
}

.page-header__icon {
  font-size: 48px;
  line-height: 1;
  margin-bottom: var(--sp-4);
}

.page-header__title {
  font-size: 40px;
  font-weight: var(--weight-bold);
  margin-bottom: var(--sp-3);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-1);
  outline: none;
}
.page-header__title[contenteditable="true"]:empty::before {
  content: attr(data-placeholder);
  color: var(--color-text-4);
}

.page-header__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-4);
  font-size: 13px;
  color: var(--color-text-2);
  margin-bottom: var(--sp-4);
  border-bottom: 1px solid var(--color-border-subtle);
  padding-bottom: var(--sp-4);
}

.page-header__meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.page-header__description {
  font-size: 15px;
  color: var(--color-text-2);
  line-height: var(--leading-relaxed);
}

/* Search Bar (Topbar component) */
.search-bar {
  display: flex;
  align-items: center;
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 4px 8px;
  gap: var(--sp-2);
}
.search-bar__icon {
  font-size: 12px;
  color: var(--color-text-3);
}
.search-bar input {
  border: none;
  background: none;
  font-family: var(--font-sans);
  font-size: 12px;
  outline: none;
  color: var(--color-text-1);
  width: 100%;
}

/* Responsive Grid / Column adjustments */
@media (max-width: 1024px) {
  .sidebar {
    width: var(--sidebar-w-sm);
  }
  .sidebar__logo span, .workspace-item__info, .sidebar__section-label, .nav-item span:not(.nav-item__badge) {
    display: none;
  }
  .nav-item {
    justify-content: center;
    padding: var(--sp-3) 0;
  }
  .nav-item--sub {
    padding-left: 0;
  }
  .workspace-item {
    justify-content: center;
  }
  
  .content {
    padding: var(--sp-8) var(--sp-6);
  }
  .page-header__cover {
    margin-left: -24px;
    margin-right: -24px;
    margin-top: -32px;
  }

  .col-3, .col-4 {
    grid-column: span 6;
  }
}

@media (max-width: 640px) {
  .sidebar {
    position: fixed;
    left: calc(var(--sidebar-w) * -1);
    height: 100vh;
    box-shadow: var(--shadow-lg);
  }
  
  .sidebar.open {
    left: 0;
  }

  .col-1, .col-2, .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9, .col-10, .col-11, .col-12 {
    grid-column: span 12;
  }

  .modal {
    border-radius: var(--radius-3xl) var(--radius-3xl) 0 0;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    max-width: 100%;
    animation: slideUpMobile 0.3s var(--ease-spring);
  }

  @keyframes slideUpMobile {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
  }
}

/* Print Styles */
@media print {
  .sidebar, .topbar, .btn, .pagination, .tabs__list {
    display: none !important;
  }
  .content {
    max-width: 100% !important;
    padding: 0 !important;
  }
}