/* Gold & White Luxury Design Tokens */
:root {
  --bg-creme: #FBF9F5;
  --bg-card: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(212, 175, 55, 0.25);
  --accent-gold: #D4AF37;
  --accent-gold-dark: #AA820A;
  --accent-gold-light: #F4E8C1;
  --accent-gradient: linear-gradient(135deg, #D4AF37 0%, #AA820A 100%);
  --text-main: #1C1917;
  --text-muted: #78716C;
  --text-dim: #A8A29E;
  --shadow-sm: 0 4px 12px rgba(212, 175, 55, 0.08);
  --shadow-md: 0 8px 24px rgba(28, 25, 23, 0.06);
  --shadow-lg: 0 16px 40px rgba(212, 175, 55, 0.15);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --danger: #EF4444;
  --success: #10B981;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-creme);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
}

.glass {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
}

/* AUTH SECTION */
.auth-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
  background: radial-gradient(circle at top right, #FFFDF8, #FBF9F5);
}

.auth-card {
  width: 100%;
  max-width: 440px;
  padding: 36px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.auth-logo {
  font-size: 42px;
  margin-bottom: 12px;
}

.auth-title {
  font-size: 24px;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 6px;
}

.auth-subtitle {
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 24px;
}

.space-selector-box {
  margin-bottom: 20px;
  text-align: left;
}

.space-toggle-group {
  display: flex;
  gap: 8px;
  background: #F2EDE4;
  padding: 4px;
  border-radius: 12px;
}

.space-toggle-btn {
  flex: 1;
  padding: 10px 14px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 700;
  border-radius: 9px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.space-toggle-btn.active {
  background: #FFFFFF;
  color: var(--accent-gold-dark);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.form-group {
  margin-bottom: 18px;
  text-align: left;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.input-field {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-radius: var(--radius-md);
  background: #FFFFFF;
  font-size: 14px;
  color: var(--text-main);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.input-field:focus {
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.15);
}

.btn-primary {
  width: 100%;
  padding: 13px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--accent-gradient);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s, box-shadow 0.15s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  padding: 10px 18px;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  background: #FFFFFF;
  color: var(--text-main);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-secondary:hover {
  background: #FAF8F5;
  border-color: var(--accent-gold);
}

.icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: #FFFFFF;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.icon-btn:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold-dark);
}

/* HEADER & NAVBAR */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--glass-border);
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-space-switcher {
  display: flex;
  gap: 4px;
  background: #F2EDE4;
  padding: 3px;
  border-radius: 20px;
}

.space-pill {
  padding: 6px 14px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 700;
  border-radius: 16px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 6px;
}

.space-pill.active {
  background: var(--accent-gradient);
  color: #FFFFFF;
  box-shadow: 0 2px 6px rgba(212, 175, 55, 0.3);
}

.search-container {
  position: relative;
  flex: 1;
  max-width: 440px;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent-gold);
  font-size: 14px;
}

.search-input {
  width: 100%;
  padding: 9px 16px 9px 38px;
  border: 1px solid rgba(212, 175, 55, 0.25);
  border-radius: 20px;
  background: #FAF8F5;
  font-size: 13px;
  outline: none;
}

.nav-tabs {
  display: flex;
  gap: 6px;
  background: #F2EDE4;
  padding: 4px;
  border-radius: 12px;
}

.tab-btn {
  padding: 7px 14px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 700;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 6px;
}

.tab-btn.active {
  background: #FFFFFF;
  color: var(--accent-gold-dark);
  box-shadow: var(--shadow-sm);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.badge-storage {
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-gold-dark);
  background: var(--accent-gold-light);
  padding: 6px 12px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* MAIN CONTENT GRID */
.main-content {
  padding: 24px;
  flex: 1;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 18px;
}

/* PHOTO CARD */
.photo-card {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #EAE6DF;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.photo-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.photo-card.selected {
  border: 3px solid var(--accent-gold);
}

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

.photo-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(28, 25, 23, 0.75) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.2s;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 12px;
}

.photo-card:hover .photo-overlay {
  opacity: 1;
}

.photo-actions {
  display: flex;
  justify-content: flex-end;
}

.photo-info {
  color: #FFFFFF;
}

.photo-title {
  font-weight: 700;
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.photo-sub {
  font-size: 11px;
  opacity: 0.8;
}

.select-checkbox {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 10;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--accent-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-gold-dark);
}

/* DRIVE FILE CARD */
.drive-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
}

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

.drive-card.selected {
  border: 2px solid var(--accent-gold);
  background: #FFFDF8;
}

.drive-icon-box {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-gold-light);
  color: var(--accent-gold-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 12px;
}

.drive-file-name {
  font-weight: 700;
  font-size: 13px;
  color: var(--text-main);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.drive-file-meta {
  font-size: 11px;
  color: var(--text-muted);
}

.drive-actions-bar {
  display: flex;
  gap: 6px;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid rgba(212, 175, 55, 0.15);
}

/* BATCH BAR */
.batch-bar {
  background: #FFFFFF;
  border-bottom: 1px solid var(--glass-border);
  padding: 10px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
}

.batch-title {
  font-weight: 700;
  font-size: 13px;
  color: var(--accent-gold-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}

.batch-controls {
  display: flex;
  gap: 8px;
}

/* MODALS & LIGHTBOX */
.lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(28, 25, 23, 0.85);
  backdrop-filter: blur(12px);
  display: none;
  flex-direction: column;
}

.lightbox-modal.active {
  display: flex;
}

.lightbox-header {
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #FFFFFF;
}

.lightbox-body {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-prev { left: 24px; }
.lightbox-next { right: 24px; }

/* PEOPLE & ALBUMS GRID */
.people-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 20px;
}

.person-card {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 18px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  transition: transform 0.2s;
}

.person-card:hover {
  transform: translateY(-3px);
}

.person-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 12px;
  border: 2px solid var(--accent-gold);
}

.person-name {
  font-weight: 700;
  font-size: 14px;
  color: var(--text-main);
  margin-bottom: 2px;
}

.person-count {
  font-size: 12px;
  color: var(--text-muted);
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .app-header {
    flex-wrap: wrap;
    padding: 10px 14px;
  }
  .search-container {
    order: 3;
    max-width: 100%;
    width: 100%;
  }
  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
  }
}