/* === Design Tokens — Light Minimal Theme === */
:root {
  --color-primary: #7046F1;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-pill: 9999px;
}

/* === Base === */
body {
  font-family: 'Inter var', 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--color-gray-50);
  min-height: 100vh;
  margin: 0;
  color: var(--color-gray-900);
}

/* === Card === */
.glass-card {
  background: #fff;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  padding: 2rem;
}

.glass-card-dark {
  background: #fff;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  padding: 2rem;
}

.glass-card-light {
  background: #fff;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: 1rem;
}

/* === Pill Buttons === */
.pill-btn {
  background: var(--color-gray-100);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-pill);
  padding: 0.5rem 1.25rem;
  color: var(--color-gray-500);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.pill-btn:hover {
  background: var(--color-gray-200);
  color: var(--color-gray-700);
}

.pill-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.pill-btn-sm {
  padding: 0.3rem 0.75rem;
  font-size: 0.75rem;
}

/* === Nav Bar === */
.nav-bar {
  background: #fff;
  border-bottom: 1px solid var(--color-gray-200);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 0.75rem 1.5rem;
}

.nav-logo {
  flex-shrink: 0;
}

.nav-logo-img {
  height: 28px;
  width: auto;
}

.nav-tabs {
  display: flex;
  gap: 0.25rem;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

/* === Hamburger (hidden on desktop) === */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-right: 0.5rem;
}

.nav-hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-gray-600);
  border-radius: 2px;
}

.nav-tab {
  background: transparent;
  border: none;
  color: var(--color-gray-400);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.nav-tab:hover {
  background: var(--color-gray-100);
  color: var(--color-gray-700);
}

.nav-tab.active {
  background: var(--color-gray-100);
  color: var(--color-gray-900);
}

.nav-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
}

.nav-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--color-gray-200);
}

.nav-logout {
  background: transparent;
  border: 1px solid var(--color-gray-200);
  color: var(--color-gray-500);
  font-size: 0.75rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.2s ease;
}

.nav-logout:hover {
  background: #fef2f2;
  border-color: #fecaca;
  color: #dc2626;
}

/* === Form Inputs === */
.glass-input {
  width: 100%;
  background: #fff;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--color-gray-900);
  font-size: 0.875rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s ease;
  box-sizing: border-box;
}

.glass-input::placeholder {
  color: var(--color-gray-400);
}

.glass-input:focus {
  border-color: var(--color-gray-400);
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.04);
}

textarea.glass-input {
  resize: vertical;
  min-height: 80px;
}

/* === Submit Button === */
.submit-btn {
  width: 100%;
  background: var(--color-gray-900);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.85rem;
  font-size: 0.925rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.submit-btn:hover:not(:disabled) {
  background: var(--color-gray-800);
}

.submit-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* === Toast === */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  z-index: 1000;
  animation: slideInRight 0.3s ease;
  max-width: 360px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.toast.success {
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.toast.error {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.toast.info {
  background: #eff6ff;
  color: #1e40af;
  border: 1px solid #bfdbfe;
}

.toast.fade-out {
  animation: fadeOut 0.3s ease forwards;
}

/* === Loading Spinner === */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: none;
}

/* === Skeleton Loading === */
.skeleton-line {
  height: 14px;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--color-gray-100) 25%, var(--color-gray-200) 50%, var(--color-gray-100) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

/* === Status Badge === */
.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge-pending {
  background: #fef3c7;
  color: #92400e;
}

.badge-approved {
  background: #d1fae5;
  color: #065f46;
}

.badge-rejected {
  background: #fee2e2;
  color: #991b1b;
}

/* === History Cards === */
.history-card {
  border-left: 3px solid var(--color-gray-300);
  transition: box-shadow 0.2s ease;
}

.history-card:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.history-card.late-early {
  border-left-color: var(--color-gray-400);
}

/* === Preview Box === */
.preview-box {
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: background 0.2s ease;
}

.preview-box.highlight {
  background: var(--color-gray-100);
}

/* === Animations === */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(80px); }
  to { opacity: 1; transform: translateX(0); }
}

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

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

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

.animate-fade-in {
  animation: fadeIn 0.4s ease forwards;
}

/* === Flatpickr Overrides — Light Theme === */
.flatpickr-calendar {
  background: #fff !important;
  border: 1px solid var(--color-gray-200) !important;
  border-radius: var(--radius-md) !important;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08) !important;
}

.flatpickr-months .flatpickr-month,
.flatpickr-current-month .flatpickr-monthDropdown-months {
  background: transparent !important;
  color: var(--color-gray-900) !important;
}

.flatpickr-current-month input.cur-year {
  color: var(--color-gray-900) !important;
}

.flatpickr-weekdays {
  background: transparent !important;
}

span.flatpickr-weekday {
  color: var(--color-gray-400) !important;
}

.flatpickr-day {
  color: var(--color-gray-700) !important;
  border-radius: 8px !important;
}

.flatpickr-day:hover {
  background: var(--color-gray-100) !important;
  border-color: transparent !important;
}

.flatpickr-day.selected,
.flatpickr-day.selected:hover {
  background: var(--color-primary) !important;
  border-color: transparent !important;
  color: #fff !important;
}

.flatpickr-day.today {
  border-color: var(--color-gray-300) !important;
}

.flatpickr-day.flatpickr-disabled {
  color: var(--color-gray-300) !important;
}

.flatpickr-months .flatpickr-prev-month,
.flatpickr-months .flatpickr-next-month {
  fill: var(--color-gray-500) !important;
}

.flatpickr-months .flatpickr-prev-month svg,
.flatpickr-months .flatpickr-next-month svg {
  fill: var(--color-gray-500) !important;
}

/* === Mobile === */
@media (max-width: 768px) {
  .nav-bar {
    flex-wrap: wrap;
    padding: 0.5rem 1rem;
  }

  .nav-hamburger {
    display: flex;
  }

  .nav-user {
    margin-left: auto;
  }

  .nav-tabs {
    display: none;
    position: static;
    transform: none;
    width: 100%;
    flex-direction: column;
    order: 4;
    padding-top: 0.5rem;
    gap: 0;
  }

  .nav-tabs.open {
    display: flex;
  }

  .nav-tab {
    font-size: 0.875rem;
    padding: 0.6rem 1rem;
    border-radius: var(--radius-sm);
  }

  .toast {
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
    max-width: none;
  }
}