/**
 * What My Friends Eat - Component Styles
 * Scandinavian: functional, understated, tactile
 */

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1.4;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

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

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

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: white;
  border-color: var(--color-secondary);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-secondary-dark);
  border-color: var(--color-secondary-dark);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover:not(:disabled) {
  background-color: var(--color-primary);
  color: white;
}

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

.btn-ghost:hover:not(:disabled) {
  background-color: var(--color-border-light);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

.btn-icon {
  padding: var(--space-3);
  aspect-ratio: 1;
}

/* ===== Cards ===== */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: none;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

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

.card-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

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

.card-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.card-description {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.card-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border-light);
  background-color: var(--color-bg);
}

/* Clickable card */
.card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

/* ===== Form Elements ===== */
.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

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

.form-input.error {
  border-color: var(--color-danger);
}

.form-error {
  font-size: var(--text-sm);
  color: var(--color-danger);
  margin-top: var(--space-1);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* ===== Tags/Badges ===== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.tag-like {
  background-color: #F0F7F4;
  color: #4A6B5D;
  border-color: #D4E5DD;
}

.tag-dislike {
  background-color: #FAF5F0;
  color: #8B7355;
  border-color: #E8DDD0;
}

.tag-allergy {
  background-color: #FAF0F0;
  color: #8B5A5A;
  border-color: #E8D4D4;
}

.tag-allergy-severe {
  background-color: #8B5A5A;
  color: white;
  border-color: #8B5A5A;
}

.tag-removable {
  cursor: pointer;
}

.tag-removable:hover {
  opacity: 0.8;
}

.tag-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.tag-remove:hover {
  opacity: 1;
}

/* ===== Avatar ===== */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-weight: 600;
  font-size: var(--text-sm);
  overflow: hidden;
}

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

.avatar-sm { width: 32px; height: 32px; font-size: var(--text-xs); }
.avatar-lg { width: 56px; height: 56px; font-size: var(--text-lg); }
.avatar-xl { width: 80px; height: 80px; font-size: var(--text-xl); }

/* ===== Navigation ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
  padding: var(--space-4) 0;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

.navbar-brand:hover {
  color: var(--color-primary);
}

.navbar-logo {
  width: 36px;
  height: 36px;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
}

.navbar-link {
  padding: var(--space-2) var(--space-4);
  color: var(--color-text-secondary);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.navbar-link:hover,
.navbar-link.active {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  background-color: rgba(224, 122, 95, 0.1);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Mobile menu toggle */
.navbar-toggle {
  display: none;
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
}

@media (max-width: 767px) {
  .navbar-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border-light);
    padding: var(--space-4);
    gap: var(--space-1);
  }

  .navbar-menu.open {
    display: flex;
  }

  .navbar-toggle {
    display: flex;
  }

  .navbar-link {
    width: 100%;
    padding: var(--space-3) var(--space-4);
  }
}

/* ===== Tabs ===== */
.tabs {
  display: flex;
  border-bottom: 2px solid var(--color-border-light);
  gap: var(--space-1);
}

.tab {
  padding: var(--space-3) var(--space-6);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-panel {
  display: none;
  padding: var(--space-6) 0;
}

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

/* ===== Alerts/Banners ===== */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  border: 1px solid;
}

.alert-info {
  background-color: #F5F8FA;
  color: #4A6B7C;
  border-color: #D4E1E8;
}

.alert-success {
  background-color: #F0F7F4;
  color: #4A6B5D;
  border-color: #D4E5DD;
}

.alert-warning {
  background-color: #FAF5F0;
  color: #8B7355;
  border-color: #E8DDD0;
}

.alert-danger {
  background-color: #FAF0F0;
  color: #8B5A5A;
  border-color: #E8D4D4;
}

.alert-icon {
  flex-shrink: 0;
}

.alert-dismiss {
  margin-left: auto;
  padding: var(--space-1);
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.6;
}

.alert-dismiss:hover {
  opacity: 1;
}

/* ===== Loading States ===== */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-lg {
  width: 40px;
  height: 40px;
  border-width: 3px;
}

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

.skeleton {
  background: linear-gradient(90deg, var(--color-border-light) 25%, var(--color-bg) 50%, var(--color-border-light) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

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

/* ===== Empty States ===== */
.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-6);
}

.empty-state-icon {
  font-size: 4rem;
  color: var(--color-muted);
  margin-bottom: var(--space-4);
}

.empty-state-title {
  font-size: var(--text-xl);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.empty-state-description {
  color: var(--color-text-secondary);
  max-width: 400px;
  margin: 0 auto var(--space-6);
}

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

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  z-index: var(--z-dropdown);
  min-width: 180px;
  padding: var(--space-2);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-fast);
}

.dropdown.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(4px);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text);
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
  background-color: var(--color-border-light);
}

.dropdown-divider {
  height: 1px;
  background-color: var(--color-border-light);
  margin: var(--space-2) 0;
}

/* ===== Search Input ===== */
.search-input {
  position: relative;
}

.search-input input {
  padding-left: var(--space-10);
}

.search-input-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-muted);
  pointer-events: none;
}

/* ===== Divider ===== */
.divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background-color: var(--color-border);
}