/* ==========================================================================
   CA Office Management System — Main CSS
   Foundation + CSS variables (theming via theme-light.css / theme-dark.css)
   ========================================================================== */

:root {
  /* Brand colors */
  --brand-primary: #4f46e5;
  --brand-primary-hover: #4338ca;
  --brand-primary-light: #eef2ff;

  /* Status colors */
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;

  /* Sidebar */
  --sidebar-width: 260px;
  --sidebar-collapsed-width: 70px;

  /* Topbar */
  --topbar-height: 64px;

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-8: 3rem;

  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 350ms ease;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.10), 0 10px 10px -5px rgba(0,0,0,0.04);
}

/* Theme-specific tokens (defined in theme-light.css / theme-dark.css) */
:root {
  --bg-body: #f8fafc;
  --bg-surface: #ffffff;
  --bg-elevated: #ffffff;
  --bg-hover: #f1f5f9;
  --bg-active: #eef2ff;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-inverse: #ffffff;

  --border-color: #e2e8f0;
  --border-strong: #cbd5e1;

  --sidebar-bg: #ffffff;
  --sidebar-text: #475569;
  --sidebar-text-active: #4f46e5;
  --sidebar-section: #94a3b8;
  --sidebar-hover: #f1f5f9;
  --sidebar-active: #eef2ff;

  --topbar-bg: #ffffff;
  --topbar-text: #475569;
}

/* Dark theme overrides */
[data-theme="dark"] {
  --bg-body: #0f172a;
  --bg-surface: #1e293b;
  --bg-elevated: #1e293b;
  --bg-hover: #334155;
  --bg-active: #312e81;

  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  --border-color: #334155;
  --border-strong: #475569;

  --sidebar-bg: #1e293b;
  --sidebar-text: #cbd5e1;
  --sidebar-text-active: #a5b4fc;
  --sidebar-section: #64748b;
  --sidebar-hover: #334155;
  --sidebar-active: #312e81;

  --topbar-bg: #1e293b;
  --topbar-text: #cbd5e1;
}

/* ===== Base ===== */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  background-color: var(--bg-body);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--brand-primary); text-decoration: none; }
a:hover { color: var(--brand-primary-hover); }

/* ===== Bootstrap overrides ===== */
.btn-primary {
  --bs-btn-bg: var(--brand-primary);
  --bs-btn-border-color: var(--brand-primary);
  --bs-btn-hover-bg: var(--brand-primary-hover);
  --bs-btn-hover-border-color: var(--brand-primary-hover);
  --bs-btn-active-bg: var(--brand-primary-hover);
  --bs-btn-active-border-color: var(--brand-primary-hover);
  --bs-btn-disabled-bg: var(--brand-primary);
  --bs-btn-disabled-border-color: var(--brand-primary);
  font-weight: 500;
}

.btn-outline-primary {
  --bs-btn-color: var(--brand-primary);
  --bs-btn-border-color: var(--brand-primary);
  --bs-btn-hover-bg: var(--brand-primary);
  --bs-btn-hover-border-color: var(--brand-primary);
  --bs-btn-active-bg: var(--brand-primary);
  --bs-btn-active-border-color: var(--brand-primary);
}

.btn {
  border-radius: var(--radius-md);
  font-weight: 500;
  padding: 0.45rem 1rem;
  transition: all var(--transition-base);
}

.btn-sm { padding: 0.25rem 0.65rem; font-size: 0.8125rem; }
.btn-lg { padding: 0.65rem 1.5rem; font-size: 1rem; }

.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.card-header {
  background-color: transparent;
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 1.25rem;
  font-weight: 600;
}

.card-body { padding: 1.25rem; }

.form-control, .form-select {
  border-radius: var(--radius-md);
  border-color: var(--border-color);
  padding: 0.5rem 0.85rem;
  font-size: 0.875rem;
  background-color: var(--bg-surface);
  color: var(--text-primary);
}

.form-control:focus, .form-select:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.form-label {
  font-weight: 500;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.input-group-text {
  background-color: var(--bg-hover);
  border-color: var(--border-color);
  color: var(--text-muted);
}

.badge { font-weight: 500; padding: 0.4em 0.7em; border-radius: 6px; }

.alert { border-radius: var(--radius-md); border: none; padding: 0.85rem 1.25rem; }
.alert-info { background-color: #eff6ff; color: #1e40af; border-left: 3px solid var(--info); }
.alert-success { background-color: #ecfdf5; color: #065f46; border-left: 3px solid var(--success); }
.alert-danger { background-color: #fef2f2; color: #991b1b; border-left: 3px solid var(--danger); }
.alert-warning { background-color: #fffbeb; color: #92400e; border-left: 3px solid var(--warning); }

[data-theme="dark"] .alert-info { background-color: rgba(59,130,246,0.1); color: #93c5fd; }
[data-theme="dark"] .alert-success { background-color: rgba(16,185,129,0.1); color: #6ee7b7; }
[data-theme="dark"] .alert-danger { background-color: rgba(239,68,68,0.1); color: #fca5a5; }
[data-theme="dark"] .alert-warning { background-color: rgba(245,158,11,0.1); color: #fcd34d; }

.dropdown-menu {
  background-color: var(--bg-surface);
  border-color: var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 0.5rem;
}

.dropdown-item {
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.dropdown-item:hover, .dropdown-item:focus {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.dropdown-item i { width: 18px; }

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

.table {
  color: var(--text-primary);
  --bs-table-bg: transparent;
}

.table > :not(caption) > * > * {
  padding: 0.85rem 1rem;
  border-bottom-color: var(--border-color);
}

.table thead th {
  background-color: var(--bg-hover);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
}

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

/* ===== Code/pre ===== */
code, pre {
  font-family: var(--font-mono);
  font-size: 0.85em;
}

code {
  background-color: var(--bg-hover);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  color: var(--brand-primary);
}

pre {
  background-color: var(--bg-hover);
  padding: 1rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
}

kbd {
  background-color: var(--bg-hover);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.75em;
  color: var(--text-secondary);
}

/* ===== Utility classes ===== */
.cursor-pointer { cursor: pointer; }
.user-select-none { user-select: none; }

.bg-hover { background-color: var(--bg-hover); }
.bg-surface { background-color: var(--bg-surface); }

.fw-medium { font-weight: 500; }
.fw-semibold { font-weight: 600; }

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

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