/* ============================================
   Photo Gallery — Global Styles
   ============================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f0f11;
  --surface: #1a1a1e;
  --surface2: #242428;
  --border: #2e2e34;
  --text: #f0f0f5;
  --text-muted: #8888a0;
  --accent: #6c63ff;
  --accent-hover: #574fdb;
  --danger: #e05252;
  --success: #4caf7d;
  --reserved: #e8a23a;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ============================================
   Auth Page
   ============================================ */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
  background: radial-gradient(ellipse at 50% 0%, #1a1040 0%, var(--bg) 60%);
}

.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow);
}

.auth-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  color: var(--accent);
}
.auth-logo h1 { font-size: 1.4rem; color: var(--text); }
.auth-subtitle { color: var(--text-muted); margin-bottom: 28px; font-size: 0.9rem; }

/* ============================================
   Forms
   ============================================ */
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 10px 14px;
  font-size: 0.95rem;
  transition: border-color 0.2s;
  outline: none;
}
.form-group textarea { resize: vertical; min-height: 80px; }
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background 0.2s, opacity 0.2s, transform 0.1s;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover:not(:disabled) { background: var(--surface2); color: var(--text); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled) { background: #c94444; }

.btn-success { background: var(--success); color: #fff; }
.btn-reserved {
  background: transparent;
  color: var(--reserved);
  border: 1px solid var(--reserved);
}
.btn-reserved:hover:not(:disabled) { background: rgba(232,162,58,0.1); }

.btn-full { width: 100%; justify-content: center; }
.btn-sm { padding: 6px 14px; font-size: 0.82rem; }

/* ============================================
   Navbar
   ============================================ */
.navbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
}
.navbar-brand svg { color: var(--accent); }
.navbar-actions { display: flex; align-items: center; gap: 12px; }
.navbar-user {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 4px 12px;
  background: var(--surface2);
  border-radius: 20px;
  border: 1px solid var(--border);
}

/* ============================================
   Main Layout
   ============================================ */
.main { max-width: 1400px; margin: 0 auto; padding: 32px 24px; }

/* ============================================
   Section Header
   ============================================ */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}
.section-title { font-size: 1.3rem; font-weight: 700; }
.section-subtitle { font-size: 0.88rem; color: var(--text-muted); margin-top: 2px; }

/* ============================================
   Photo Grid
   ============================================ */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.photo-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  cursor: pointer;
}
.photo-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.photo-card.reserved {
  border-color: var(--reserved);
}

.photo-thumb {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
  background: var(--surface2);
}

.photo-card-body { padding: 14px; }

.photo-card-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; }
.tag {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.tag-reserved { background: rgba(232,162,58,0.15); color: var(--reserved); border: 1px solid rgba(232,162,58,0.3); }
.tag-available { background: rgba(76,175,125,0.12); color: var(--success); border: 1px solid rgba(76,175,125,0.3); }

.photo-card-note {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  line-height: 1.5;
  max-height: 60px;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}
.photo-card-note.empty { font-style: italic; }

.photo-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.photo-card-meta { font-size: 0.78rem; color: var(--text-muted); }

/* ============================================
   Upload Zone
   ============================================ */
.upload-zone {
  background: var(--surface);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  margin-bottom: 28px;
}
.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--accent);
  background: rgba(108,99,255,0.04);
}
.upload-zone svg { color: var(--text-muted); margin-bottom: 12px; }
.upload-zone p { color: var(--text-muted); font-size: 0.9rem; }
.upload-zone strong { color: var(--text); }
#fileInput { display: none; }

/* ============================================
   Modal
   ============================================ */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex; align-items: center; justify-content: center;
  z-index: 200; padding: 24px;
  opacity: 0; pointer-events: none;
  transition: opacity 0.2s;
}
.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%; max-width: 680px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
  transform: translateY(10px);
  transition: transform 0.2s;
}
.modal-overlay.open .modal { transform: translateY(0); }

.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}
.modal-header h2 { font-size: 1.1rem; }
.modal-close {
  background: none; border: none; color: var(--text-muted);
  cursor: pointer; font-size: 1.3rem; line-height: 1;
  transition: color 0.2s;
}
.modal-close:hover { color: var(--text); }

.modal-body { padding: 24px; }
.modal-img { width: 100%; border-radius: 8px; margin-bottom: 20px; max-height: 60vh; object-fit: contain; }
.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap;
}

/* ============================================
   Admin Layout
   ============================================ */
.admin-layout { display: flex; min-height: calc(100vh - 60px); }

.admin-sidebar {
  width: 220px; flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 24px 0;
}
.admin-sidebar nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 20px;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
  border-left: 3px solid transparent;
}
.admin-sidebar nav a:hover { background: var(--surface2); color: var(--text); }
.admin-sidebar nav a.active {
  background: rgba(108,99,255,0.08);
  color: var(--accent);
  border-left-color: var(--accent);
}

.admin-content { flex: 1; padding: 32px 28px; overflow-x: hidden; }

/* ============================================
   Stats Cards
   ============================================ */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 16px; margin-bottom: 32px; }
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.stat-card-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-muted); margin-bottom: 8px; }
.stat-card-value { font-size: 2rem; font-weight: 700; }
.stat-card-value.accent { color: var(--accent); }
.stat-card-value.reserved { color: var(--reserved); }
.stat-card-value.success { color: var(--success); }

/* ============================================
   Table
   ============================================ */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; }
thead { background: var(--surface2); }
thead th {
  padding: 12px 16px; text-align: left;
  font-size: 0.8rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.5px;
  color: var(--text-muted);
}
tbody tr { border-top: 1px solid var(--border); transition: background 0.15s; }
tbody tr:hover { background: var(--surface2); }
tbody td { padding: 12px 16px; font-size: 0.88rem; vertical-align: middle; }

.table-thumb {
  width: 52px; height: 42px;
  object-fit: cover; border-radius: 6px;
  background: var(--surface2);
  display: block;
}

/* ============================================
   Misc
   ============================================ */
.error-msg {
  background: rgba(224,82,82,0.1);
  border: 1px solid rgba(224,82,82,0.3);
  color: var(--danger);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.88rem;
  margin-bottom: 14px;
}
.success-msg {
  background: rgba(76,175,125,0.1);
  border: 1px solid rgba(76,175,125,0.3);
  color: var(--success);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.88rem;
  margin-bottom: 14px;
}
.hidden { display: none !important; }

.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 40px auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-muted);
}
.empty-state svg { margin-bottom: 16px; opacity: 0.4; }
.empty-state p { font-size: 1rem; }

/* ============================================
   Upload Progress Bar
   ============================================ */
.progress-wrap {
  background: var(--surface2);
  border-radius: 4px;
  height: 6px;
  overflow: hidden;
  margin-top: 10px;
}
.progress-bar {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width 0.3s;
  border-radius: 4px;
}

/* ============================================
   Tabs
   ============================================ */
.tabs { display: flex; gap: 4px; margin-bottom: 24px; border-bottom: 1px solid var(--border); }
.tab-btn {
  padding: 10px 18px; background: none; border: none;
  color: var(--text-muted); cursor: pointer;
  font-size: 0.9rem; font-weight: 500;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px; transition: color 0.15s, border-color 0.15s;
}
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-btn:hover:not(.active) { color: var(--text); }
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
  .admin-layout { flex-direction: column; }
  .admin-sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--border); padding: 12px 0; }
  .admin-sidebar nav { display: flex; overflow-x: auto; }
  .admin-sidebar nav a { padding: 8px 16px; border-left: none; border-bottom: 3px solid transparent; white-space: nowrap; }
  .admin-sidebar nav a.active { border-left: none; border-bottom-color: var(--accent); }
  .photo-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
  .modal { max-width: 100%; }
  .navbar-actions .btn span { display: none; }
}