/* Dark Theme for OralHealth */
:root {
  /* Light theme (default) */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-accent: #e9ecef;
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --text-muted: #adb5bd;
  --border-color: #dee2e6;
  --shadow: rgba(0, 0, 0, 0.1);
  --link-color: #007bff;
  --link-hover: #0056b3;
  --success: #28a745;
  --warning: #ffc107;
  --danger: #dc3545;
  --info: #17a2b8;
}

/* Dark theme variables */
[data-theme="dark"] {
  --bg-primary: #1a1a1a;
  --bg-secondary: #2d2d2d;
  --bg-accent: #3a3a3a;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --text-muted: #888888;
  --border-color: #444444;
  --shadow: rgba(0, 0, 0, 0.3);
  --link-color: #4dabf7;
  --link-hover: #339af0;
  --success: #51cf66;
  --warning: #ffd43b;
  --danger: #ff6b6b;
  --info: #22b8cf;
}

/* Apply theme variables */
body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.card, .modal-content, .dropdown-menu {
  background-color: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

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

.table-striped tbody tr:nth-of-type(odd) {
  background-color: var(--bg-accent);
}

.form-control, .form-select {
  background-color: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.form-control:focus, .form-select:focus {
  background-color: var(--bg-secondary);
  border-color: var(--link-color);
  color: var(--text-primary);
  box-shadow: 0 0 0 0.2rem rgba(var(--link-color), 0.25);
}

.btn-outline-secondary {
  color: var(--text-secondary);
  border-color: var(--border-color);
}

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

/* Navigation */
.navbar {
  background-color: var(--bg-secondary) !important;
  border-bottom: 1px solid var(--border-color);
}

.navbar-brand, .nav-link {
  color: var(--text-primary) !important;
}

.nav-link:hover {
  color: var(--link-hover) !important;
}

/* Footer */
footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

/* Links */
a {
  color: var(--link-color);
}

a:hover {
  color: var(--link-hover);
}

/* Theme Toggle Button - Bottom Right like ExpressEntryPredictor */
.theme-toggle {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #00d4aa; /* OralHealth primary color */
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 25px rgba(0,0,0,0.4);
}

.theme-toggle .sun-icon {
  display: block;
}

.theme-toggle .moon-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle .moon-icon {
  display: block;
}

/* Mobile responsive for theme toggle */
@media (max-width: 768px) {
  .theme-toggle {
    width: 50px;
    height: 50px;
    bottom: 15px;
    right: 15px;
    font-size: 1.2rem;
  }
}