@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --color-white: #ffffff;
  --color-black: #090d16;
  
  /* Grays */
  --color-gray-50: #f8fafc;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-300: #cbd5e1;
  --color-gray-400: #94a3b8;
  --color-gray-500: #64748b;
  --color-gray-600: #475569;
  --color-gray-700: #334155;
  --color-gray-800: #1e293b;
  --color-gray-900: #0f172a;
  
  /* Brand colors (Obsidian/Slate Theme) */
  --color-primary-50: #f8fafc;
  --color-primary-100: #f1f5f9;
  --color-primary-200: #e2e8f0;
  --color-primary-500: #0f172a; /* Slate 900 */
  --color-primary-600: #1e293b;
  --color-primary-700: #334155;
  
  /* Status Colors */
  --color-success-50: #f0fdf4;
  --color-success-500: #10b981;
  --color-success-700: #047857;
  
  --color-warning-50: #fffbeb;
  --color-warning-500: #f59e0b;
  --color-warning-700: #b45309;
  
  --color-danger-50: #fef2f2;
  --color-danger-500: #ef4444;
  --color-danger-700: #b91c1c;
  
  --color-info-50: #f0f9ff;
  --color-info-500: #0ea5e9;
  --color-info-700: #0369a1;

  /* Theme Tokens */
  --bg-primary: var(--color-white);
  --bg-secondary: var(--color-gray-50);
  --bg-tertiary: var(--color-gray-100);
  --text-primary: var(--color-gray-900);
  --text-secondary: var(--color-gray-600);
  --text-muted: var(--color-gray-400);
  --border-color: var(--color-gray-200);
  --border-color-light: var(--color-gray-100);
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.02);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.04), 0 1px 2px -1px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  
  --radius-sm: 2px;
  --radius: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-full: 9999px;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --transition: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --navbar-height: 64px;
  --container-max: 1200px;
}

[data-theme="dark"] {
  --bg-primary: #0b0f19;
  --bg-secondary: #06090f;
  --bg-tertiary: #161f30;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #475569;
  --border-color: #1e293b;
  --border-color-light: #0f172a;
  
  --color-primary-50: #1e293b;
  --color-primary-100: #334155;
  --color-primary-200: #475569;
  --color-primary-500: #f8fafc; /* White/Light brand color */
  --color-primary-600: #e2e8f0;
  --color-primary-700: #cbd5e1;
  
  --color-success-50: #022c22;
  --color-warning-50: #451a03;
  --color-danger-50: #450a0a;
  --color-info-50: #0c4a6e;
  
  --color-gray-50: #06090f;
  --color-gray-100: #111827;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--text-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-600); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
input, select, textarea, button { font-family: inherit; font-size: inherit; color: inherit; }

.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--color-primary-500);
  color: var(--bg-primary);
  padding: 0.5rem 1rem;
  z-index: 10000;
  transition: top var(--transition);
}
.skip-link:focus { top: 0; }

.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding-left: 1.5rem; padding-right: 1.5rem; }
.container-sm { max-width: 640px; }
.container-lg { max-width: 1440px; }

/* Grid / Flex Layouts */
.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-12 { grid-template-columns: repeat(12, 1fr); }

.d-flex { display: flex; }
.d-inline-flex { display: inline-flex; }
.d-grid { display: grid; }
.d-block { display: block; }
.d-none { display: none; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.flex-column { flex-direction: column; }
.align-center { align-items: center; }
.align-start { align-items: flex-start; }
.align-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }

/* Margins & Paddings */
.m-0 { margin: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }
.mx-auto { margin-left: auto; margin-right: auto; }

.p-0 { padding: 0; }
.p-2 { padding: 0.5rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }

/* Typography */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.font-light { font-weight: 300; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-primary { color: var(--color-primary-500); }
.text-success { color: var(--color-success-500); }
.text-warning { color: var(--color-warning-500); }
.text-danger { color: var(--color-danger-500); }

/* Components */
.card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.card:hover { border-color: var(--color-gray-300); }
[data-theme="dark"] .card:hover { border-color: var(--color-gray-700); }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1rem;
  margin-bottom: 1.25rem;
}
.card-footer {
  border-top: 1px solid var(--border-color);
  padding-top: 1rem;
  margin-top: 1.25rem;
}
.card-title { font-size: 1rem; font-weight: 600; letter-spacing: -0.01em; }

/* Forms */
.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; font-size: 0.8125rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-secondary); margin-bottom: 0.5rem; }
.form-label.required::after { content: ' *'; color: var(--color-danger-500); }
.form-hint { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.25rem; }
.form-error { font-size: 0.75rem; color: var(--color-danger-500); margin-top: 0.25rem; }

.form-input,
.form-select,
.form-textarea {
  display: block;
  width: 100%;
  padding: 0.5rem 0.75rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  transition: border-color var(--transition), box-shadow var(--transition);
  line-height: 1.5;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary-500);
}
.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: var(--color-danger-500);
}
.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--bg-tertiary);
}
.form-textarea { min-height: 120px; resize: vertical; }
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1rem;
  padding-right: 2.5rem;
}

.form-check { display: flex; align-items: center; gap: 0.5rem; cursor: pointer; user-select: none; }
.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 0.95rem;
  height: 0.95rem;
  accent-color: var(--color-primary-500);
  cursor: pointer;
  border-radius: var(--radius-sm);
}
.form-check-label { font-size: 0.875rem; color: var(--text-secondary); cursor: pointer; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1.5;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}
.btn:focus { outline: none; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary { background: var(--color-primary-500); color: var(--bg-primary); border-color: var(--color-primary-500); }
.btn-primary:hover { background: var(--color-primary-600); border-color: var(--color-primary-600); }
.btn-primary:active { background: var(--color-primary-700); }

.btn-secondary { background: var(--bg-primary); color: var(--text-primary); border-color: var(--border-color); }
.btn-secondary:hover { background: var(--bg-tertiary); border-color: var(--color-gray-300); }

.btn-danger { background: var(--color-danger-500); color: var(--color-white); border-color: var(--color-danger-500); }
.btn-danger:hover { background: var(--color-danger-700); border-color: var(--color-danger-700); }

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

.btn-sm { padding: 0.25rem 0.625rem; font-size: 0.75rem; }
.btn-lg { padding: 0.75rem 1.5rem; font-size: 0.875rem; }
.btn-block { width: 100%; }

.btn-loading { position: relative; pointer-events: none; color: transparent !important; }
.btn-loading::after {
  content: '';
  position: absolute;
  width: 1rem;
  height: 1rem;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* Tables */
.table-container, .table-responsive { overflow-x: auto; border: 1px solid var(--border-color); border-radius: var(--radius); background: var(--bg-primary); }
table { width: 100%; border-collapse: collapse; }
thead { background: var(--bg-secondary); border-bottom: 1px solid var(--border-color); }
th, td { padding: 0.875rem 1rem; text-align: left; border-bottom: 1px solid var(--border-color); font-size: 0.875rem; }
th { font-weight: 600; text-transform: uppercase; font-size: 0.75rem; letter-spacing: 0.05em; color: var(--text-secondary); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg-secondary); }
.table-striped tbody tr:nth-child(even) td { background: var(--bg-secondary); }

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border-radius: var(--radius-sm);
  line-height: 1.4;
  white-space: nowrap;
}
.badge-primary { background: var(--color-primary-100); color: var(--color-primary-700); }
.badge-success { background: var(--color-success-50); color: var(--color-success-700); border: 1px solid rgba(16,185,129,0.2); }
.badge-warning { background: var(--color-warning-50); color: var(--color-warning-700); border: 1px solid rgba(245,158,11,0.2); }
.badge-danger { background: var(--color-danger-50); color: var(--color-danger-700); border: 1px solid rgba(239,68,68,0.2); }
.badge-info { background: var(--color-info-50); color: var(--color-info-700); border: 1px solid rgba(14,165,233,0.2); }

/* Alerts */
.alert {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.8125rem;
  margin-bottom: 1rem;
  animation: slide-down 0.2s ease;
}
.alert-success { background: var(--color-success-50); color: var(--color-success-700); border: 1px solid rgba(16,185,129,0.3); }
.alert-error { background: var(--color-danger-50); color: var(--color-danger-700); border: 1px solid rgba(239,68,68,0.3); }
.alert-warning { background: var(--color-warning-50); color: var(--color-warning-700); border: 1px solid rgba(245,158,11,0.3); }
.alert-info { background: var(--color-info-50); color: var(--color-info-700); border: 1px solid rgba(14,165,233,0.3); }
.alert-dismiss { background: none; border: none; font-size: 1.25rem; cursor: pointer; color: inherit; line-height: 1; opacity: 0.5; }
.alert-dismiss:hover { opacity: 1; }

.flash-container { position: fixed; top: 1rem; right: 1rem; z-index: 9000; max-width: 360px; }

/* Pagination */
.pagination { display: flex; align-items: center; justify-content: center; gap: 0.25rem; padding: 1rem 0; }
.page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  height: 2rem;
  padding: 0 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  background: var(--bg-primary);
  transition: all var(--transition);
}
.page-link:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.page-item.active .page-link { background: var(--color-primary-500); color: var(--bg-primary); border-color: var(--color-primary-500); }
.page-item.disabled .page-link { opacity: 0.3; cursor: not-allowed; pointer-events: none; }

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 2rem;
  z-index: 1000;
}
.navbar-brand { display: flex; align-items: center; gap: 1rem; }
.navbar-logo { font-size: 1.25rem; font-weight: 700; color: var(--text-primary); text-decoration: none; letter-spacing: -0.03em; }
.navbar-toggle { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; }
.hamburger { display: block; width: 20px; height: 2px; background: var(--text-primary); position: relative; transition: var(--transition); }
.hamburger::before, .hamburger::after { content: ''; display: block; width: 20px; height: 2px; background: var(--text-primary); position: absolute; transition: var(--transition); }
.hamburger::before { top: -6px; }
.hamburger::after { top: 6px; }
.navbar.open .hamburger { background: transparent; }
.navbar.open .hamburger::before { top: 0; transform: rotate(45deg); }
.navbar.open .hamburger::after { top: 0; transform: rotate(-45deg); }

.navbar-menu { display: flex; align-items: center; flex: 1; margin-left: 3rem; }
.navbar-nav { display: flex; align-items: center; gap: 0.5rem; }
.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.nav-link:hover { color: var(--text-primary); }
.nav-link.active { color: var(--text-primary); font-weight: 600; border-bottom: 2px solid var(--text-primary); border-radius: 0; margin-bottom: -2px; padding-bottom: calc(0.375rem + 2px); }

.navbar-actions { display: flex; align-items: center; gap: 1rem; margin-left: auto; }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  background: var(--bg-primary);
  cursor: pointer;
  transition: all var(--transition);
}
.theme-toggle:hover { background: var(--bg-tertiary); }
.theme-icon { display: block; width: 0.85rem; height: 0.85rem; border-radius: var(--radius-full); transition: var(--transition); }
[data-theme="light"] .theme-icon { box-shadow: inset 0 0 0 2px var(--color-warning-500); background: var(--color-warning-500); }
[data-theme="dark"] .theme-icon { box-shadow: inset 0 0 0 2px var(--color-primary-400); background: transparent; }

/* Dropdown */
.user-dropdown { position: relative; }
.dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.5rem;
  border: none;
  background: transparent;
  cursor: pointer;
}
.user-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--radius-full);
  background: var(--color-primary-500);
  color: var(--bg-primary);
  font-size: 0.75rem;
  font-weight: 700;
}
.user-name { font-size: 0.8125rem; font-weight: 500; color: var(--text-primary); }
.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 0.5rem;
  min-width: 160px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  padding: 0.25rem;
}
.dropdown-menu.open { display: block; }
.dropdown-menu a {
  display: block;
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  color: var(--text-secondary);
}
.dropdown-menu a:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.dropdown-menu .dropdown-danger { color: var(--color-danger-500); }
.dropdown-menu .dropdown-danger:hover { background: var(--color-danger-50); color: var(--color-danger-700); }
.dropdown-divider { border: none; border-top: 1px solid var(--border-color); margin: 0.25rem 0; }

/* Stats / Dashboard */
.stats-grid { display: grid; gap: 1.5rem; grid-template-columns: repeat(4, 1fr); margin-bottom: 2rem; }
.stat-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
}
.stat-label { font-size: 0.75rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.25rem; }
.stat-value { font-size: 2rem; font-weight: 300; color: var(--text-primary); line-height: 1.2; letter-spacing: -0.02em; }
.stat-card-change { font-size: 0.75rem; margin-top: 0.25rem; }
.stat-card-change.up { color: var(--color-success-500); }
.stat-card-change.down { color: var(--color-danger-500); }

/* Main Wrapper */
main { padding-top: calc(var(--navbar-height) + 2rem); min-height: calc(100vh - var(--navbar-height)); padding-bottom: 3rem; }
.page-header { margin-bottom: 2rem; }
.page-title { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 0.25rem; }
.page-subtitle { font-size: 0.875rem; }

/* Modals */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(9, 13, 22, 0.4);
  backdrop-filter: blur(4px);
  z-index: 5000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  animation: modal-in 0.15s ease-out;
}
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--border-color); }
.modal-title { font-size: 0.95rem; font-weight: 600; }
.modal-close { background: none; border: none; font-size: 1.5rem; color: var(--text-muted); cursor: pointer; }
.modal-close:hover { color: var(--text-primary); }
.modal-body { padding: 1.5rem; }
.modal-footer { display: flex; align-items: center; justify-content: flex-end; gap: 0.5rem; padding: 1rem 1.5rem; border-top: 1px solid var(--border-color); }

/* Tabs */
.tabs { display: flex; border-bottom: 1px solid var(--border-color); margin-bottom: 1.5rem; }
.tab-item {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
}
.tab-item:hover { color: var(--text-primary); }
.tab-item.active { color: var(--text-primary); border-bottom-color: var(--text-primary); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Toggle switch */
.toggle-switch { display: inline-flex; align-items: center; gap: 0.5rem; cursor: pointer; }
.toggle-switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.toggle-track {
  width: 2.25rem;
  height: 1.25rem;
  background: var(--color-gray-300);
  border-radius: var(--radius-full);
  position: relative;
  transition: background var(--transition);
}
.toggle-track::after {
  content: '';
  position: absolute;
  top: 0.125rem;
  left: 0.125rem;
  width: 1rem;
  height: 1rem;
  background: var(--color-white);
  border-radius: 50%;
  transition: transform var(--transition);
}
.toggle-switch input:checked + .toggle-track { background: var(--color-primary-500); }
.toggle-switch input:checked + .toggle-track::after { transform: translateX(1rem); }
.toggle-label { font-size: 0.8125rem; color: var(--text-secondary); }

/* Auth pages */
.auth-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 1rem; background: var(--bg-secondary); }
.auth-container { width: 100%; max-width: 380px; }
.auth-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 2.25rem;
}
.auth-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.5rem; }
.auth-logo { font-size: 1.5rem; font-weight: 700; color: var(--text-primary); text-decoration: none; letter-spacing: -0.03em; }

/* Error pages */
.error-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 1rem; background: var(--bg-secondary); }
.error-container { text-align: center; max-width: 360px; }
.error-code { font-size: 4rem; font-weight: 300; color: var(--text-primary); line-height: 1; letter-spacing: -0.05em; }
.error-title { font-size: 1.25rem; font-weight: 600; margin: 1rem 0 0.5rem; }
.error-message { color: var(--text-secondary); font-size: 0.875rem; margin-bottom: 1.5rem; }

.footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: 0.75rem;
  border-top: 1px solid var(--border-color);
  margin-top: 4rem;
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes modal-in { from { opacity: 0; transform: scale(0.98); } to { opacity: 1; transform: scale(1); } }
@keyframes slide-down { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }

/* Media Queries */
@media (max-width: 992px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .navbar-toggle { display: block; }
  .navbar-menu {
    display: none;
    position: absolute;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem;
    box-shadow: var(--shadow-md);
  }
  .navbar.open .navbar-menu { display: flex; }
  .navbar-nav { flex-direction: column; width: 100%; gap: 0.5rem; }
  .nav-link { width: 100%; padding: 0.5rem 0.75rem; }
  .nav-link.active { border-bottom: none; border-left: 2px solid var(--text-primary); padding-left: 0.75rem; padding-bottom: 0.5rem; }
  .navbar-actions { width: 100%; margin-left: 0; justify-content: space-between; padding-top: 1rem; border-top: 1px solid var(--border-color); margin-top: 1rem; }

  .stats-grid { grid-template-columns: 1fr; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .card { padding: 1.25rem; }
}

/* Bento Grid Layout System */
.bento-grid {
  display: grid;
  gap: 1.5rem;
  grid-auto-rows: minmax(100px, auto);
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .bento-grid {
    grid-template-columns: repeat(12, 1fr);
  }
  
  .bento-col-1 { grid-column: span 1; }
  .bento-col-2 { grid-column: span 2; }
  .bento-col-3 { grid-column: span 3; }
  .bento-col-4 { grid-column: span 4; }
  .bento-col-5 { grid-column: span 5; }
  .bento-col-6 { grid-column: span 6; }
  .bento-col-7 { grid-column: span 7; }
  .bento-col-8 { grid-column: span 8; }
  .bento-col-9 { grid-column: span 9; }
  .bento-col-10 { grid-column: span 10; }
  .bento-col-11 { grid-column: span 11; }
  .bento-col-12 { grid-column: span 12; }
  
  .bento-row-1 { grid-row: span 1; }
  .bento-row-2 { grid-row: span 2; }
  .bento-row-3 { grid-row: span 3; }
  .bento-row-4 { grid-row: span 4; }
}

/* Bento Card Style */
.bento-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s ease, border-color var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.bento-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-gray-300);
}

[data-theme="dark"] .bento-card:hover {
  border-color: var(--color-gray-700);
}