/* ============================================
   ADMIN PANEL - COMPONENTS
   Buttons, Forms, Navigation, Cards, Modals, Toasts
   ============================================ */

/* === BUTTONS === */
.btn-primary,
.btn-secondary,
.btn-icon,
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  min-height: var(--touch-target-min);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}

@media (min-width: 768px) {
  .btn-primary,
  .btn-secondary,
  .btn-icon,
  .btn-outline {
    padding: 0.875rem 1.5rem;
    font-size: 0.9375rem;
  }
}

.btn-primary::before,
.btn-secondary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition);
}

.btn-primary:hover::before,
.btn-secondary:hover::before {
  opacity: 1;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-text-inverse);
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

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

.btn-secondary:hover:not(:disabled) {
  background: rgba(99, 102, 241, 0.05);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

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

.btn-outline:hover:not(:disabled) {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn-icon {
  padding: var(--space-md);
  min-width: var(--touch-target-min);
  aspect-ratio: 1;
}

.btn-small {
  padding: 0.55rem 1rem;
  font-size: 0.9rem;
  min-height: 38px;
}

/* Loading state */
.btn-primary:disabled,
.btn-secondary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.button-icon {
  width: 20px;
  height: 20px;
}

/* Touch feedback */
@media (hover: none) and (pointer: coarse) {
  .btn-primary:active,
  .btn-secondary:active,
  .btn-icon:active {
    transform: scale(0.97);
  }
}

/* === FORM ELEMENTS === */
.form-group {
  margin-bottom: var(--space-lg);
}

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

.form-group small {
  display: block;
  margin-top: var(--space-xs);
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="url"],
input[type="search"],
input[type="number"],
input[type="date"],
textarea,
select {
  width: 100%;
  padding: var(--space-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  transition: all var(--transition);
  font-size: max(16px, var(--font-size-base));
  min-height: var(--touch-target-min);
}

input:hover,
textarea:hover,
select:hover {
  border-color: var(--color-border-dark);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-focus);
}

textarea {
  min-height: 120px;
  resize: vertical;
  line-height: var(--line-height-relaxed);
}

select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%2364748b' d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 16px;
  padding-right: 2.5rem;
  appearance: none;
}

/* Validation States */
.form-group.error input,
.form-group.error textarea,
.form-group.error select {
  border-color: var(--color-error);
}

.form-group.success input,
.form-group.success textarea,
.form-group.success select {
  border-color: var(--color-success);
}

.form-group .error-message {
  color: var(--color-error);
  font-size: var(--font-size-xs);
  margin-top: var(--space-xs);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* Password Field */
.password-field {
  position: relative;
}

.password-field input {
  padding-right: 3.5rem;
}

.toggle-password {
  position: absolute;
  right: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: rgba(99, 102, 241, 0.08);
  color: var(--color-primary);
  font-weight: 600;
  cursor: pointer;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  font-size: var(--font-size-sm);
}

.toggle-password:hover {
  background: rgba(99, 102, 241, 0.12);
  transform: translateY(-50%) scale(1.05);
}

/* Checkbox & Radio */
input[type="checkbox"],
input[type="radio"] {
  width: 20px;
  height: 20px;
  min-height: 0;
  accent-color: var(--color-primary);
  cursor: pointer;
}

/* === NAVIGATION === */
.admin-nav {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: rgba(255, 255, 255, 0.95);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  box-shadow: var(--shadow-xs);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  object-fit: contain;
}

.nav-brand-text h2 {
  margin: 0;
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  line-height: 1.2;
}

.badge {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-text-inverse);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
}

/* Sidebar Menu */
.sidebar {
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  padding: var(--space-lg);
  overflow-y: auto;
  height: 100%;
}

.menu {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.menu-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition);
  min-height: var(--touch-target-min);
  text-decoration: none;
  border: 2px solid transparent;
}

.menu-item:hover {
  background: rgba(99, 102, 241, 0.05);
  color: var(--color-primary);
}

.menu-item.active {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.12) 0%, rgba(139, 92, 246, 0.08) 100%);
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
  border-color: rgba(99, 102, 241, 0.2);
}

.menu-item-icon {
  width: 20px;
  height: 20px;
  transition: transform var(--transition);
}

.menu-item:hover .menu-item-icon {
  transform: scale(1.1);
}

.menu-item-label {
  flex: 1;
}

@media (hover: none) and (pointer: coarse) {
  .menu-item:hover .menu-item-icon {
    transform: none;
  }
}

/* === CARDS === */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

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

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border-light);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin: 0;
}

.card-body {
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

/* === TOAST NOTIFICATIONS === */
.toast-container {
  position: fixed;
  top: var(--space-lg);
  right: var(--space-lg);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: min(90vw, 420px);
  pointer-events: none;
}

.toast {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  pointer-events: all;
  animation: slideInRight 0.3s var(--ease-smooth);
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.toast.success {
  border-left: 4px solid var(--color-success);
}

.toast.error {
  border-left: 4px solid var(--color-error);
}

.toast.warning {
  border-left: 4px solid var(--color-warning);
}

.toast.info {
  border-left: 4px solid var(--color-info);
}

/* === MODAL === */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal-backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  animation: fadeIn 0.2s var(--ease-smooth);
}

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

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-xl);
  max-width: min(90vw, 600px);
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  animation: scaleIn 0.3s var(--ease-bounce);
  z-index: var(--z-modal);
}

@keyframes scaleIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin: 0;
}

.modal-close {
  background: transparent;
  border: none;
  padding: var(--space-sm);
  cursor: pointer;
  color: var(--color-text-muted);
  transition: all var(--transition);
  border-radius: var(--radius-md);
}

.modal-close:hover {
  background: var(--color-surface-muted);
  color: var(--color-text);
}

.modal-body {
  margin-bottom: var(--space-lg);
}

.modal-footer {
  display: flex;
  gap: var(--space-md);
  justify-content: flex-end;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

/* === LOADING SPINNER === */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* === INDICATORS === */
.offline-indicator {
  position: fixed;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-error);
  color: white;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  display: none;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  z-index: var(--z-toast);
}

.offline-indicator.show {
  display: flex;
  animation: slideUp 0.3s var(--ease-smooth);
}

@keyframes slideUp {
  from {
    transform: translateX(-50%) translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
  }
}

.offline-indicator svg {
  width: 20px;
  height: 20px;
}

/* === UNSAVED CHANGES INDICATOR === */
.unsaved-indicator {
  position: fixed;
  top: 70px;
  right: var(--space-lg);
  background: var(--color-warning);
  color: white;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  display: none;
  align-items: center;
  gap: var(--space-xs);
  box-shadow: var(--shadow-md);
  z-index: var(--z-fixed);
}

.unsaved-indicator.show {
  display: flex;
  animation: fadeIn 0.3s var(--ease-smooth);
}

.unsaved-indicator::before {
  content: '';
  width: 8px;
  height: 8px;
  background: white;
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* === CHARACTER COUNTER === */
.char-counter {
  float: right;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-normal);
}

.char-counter.warning {
  color: var(--color-warning);
}

.char-counter.error {
  color: var(--color-error);
}

/* === TOOLBAR === */
.toolbar {
  display: flex;
  gap: var(--space-xs);
  padding: var(--space-sm);
  background: var(--color-surface-muted);
  border-radius: var(--radius-md);
  flex-wrap: wrap;
}

.toolbar-btn {
  padding: var(--space-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  min-height: 36px;
}

.toolbar-btn:hover {
  background: rgba(99, 102, 241, 0.08);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

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

.toolbar-icon {
  width: 18px;
  height: 18px;
}

/* === TAG/BADGE STYLES === */
.tag-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: rgba(99, 102, 241, 0.1);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border: 1px solid rgba(99, 102, 241, 0.2);
}