@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ===================== DESIGN TOKENS ===================== */
:root {
  --bg-primary: #0a0b0f;
  --bg-secondary: #111318;
  --bg-card: #16181e;
  --bg-glass: rgba(22, 24, 30, 0.85);
  --border: rgba(255,255,255,0.07);
  --border-hover: rgba(108, 99, 255, 0.4);

  --accent: #6c63ff;
  --accent-hover: #8b84ff;
  --accent-glow: rgba(108,99,255,0.3);
  --accent-2: #ff6b9d;
  --accent-3: #00d4aa;

  --text-primary: #f0f0f5;
  --text-secondary: #9095a0;
  --text-muted: #5a5f6a;

  --gradient-hero: linear-gradient(135deg, #1a0533 0%, #0a0b0f 40%, #030d1a 100%);
  --gradient-accent: linear-gradient(135deg, #6c63ff, #ff6b9d);
  --gradient-card: linear-gradient(145deg, #16181e, #1c1f28);

  --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 30px rgba(108,99,255,0.15);
  --shadow-hover: 0 16px 48px rgba(0,0,0,0.6), 0 0 20px rgba(108,99,255,0.2);

  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================== RESET + BASE ===================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-hover); }
button { cursor: pointer; font-family: inherit; border: none; outline: none; }
input, textarea, select { font-family: inherit; }

/* ===================== SCROLLBAR ===================== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* ===================== TYPOGRAPHY ===================== */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h3 { font-size: 1.25rem; }

.gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===================== LAYOUT ===================== */
.container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }

/* ===================== NAVBAR ===================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 11, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 24px;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--text-primary);
}

.navbar-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-accent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.navbar-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  transition: var(--transition);
}

.navbar-links a:hover,
.navbar-links a.active {
  color: var(--text-primary);
  background: rgba(108,99,255,0.1);
}

/* ===================== BUTTONS ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: 0 4px 20px var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent);
}
.btn-outline:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255,255,255,0.05);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  color: var(--text-primary);
}

.btn-danger {
  background: rgba(255, 70, 70, 0.1);
  color: #ff4646;
  border: 1px solid rgba(255,70,70,0.3);
}
.btn-danger:hover {
  background: #ff4646;
  color: #fff;
}

.btn-sm { padding: 7px 14px; font-size: 0.82rem; }
.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn-icon { width: 36px; height: 36px; padding: 0; justify-content: center; border-radius: 8px; }

/* ===================== CARDS ===================== */
.card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}
.card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

/* ===================== ALBUM GRID ===================== */
.albums-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.album-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
  text-decoration: none;
  color: inherit;
  display: block;
}
.album-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.album-cover {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  background: linear-gradient(135deg, #1c1f28, #252936);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--text-muted);
  position: relative;
  overflow: hidden;
}
.album-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.album-card:hover .album-cover img {
  transform: scale(1.06);
}
.album-cover-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 60%);
}

.album-info {
  padding: 16px 20px 20px;
}
.album-info h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.album-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.8rem;
}
.album-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ===================== PHOTO GRID ===================== */
.photos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.photo-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  background: var(--bg-card);
}
.photo-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.photo-item:hover img { transform: scale(1.08); }

.photo-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.photo-item:hover .photo-overlay {
  background: rgba(0,0,0,0.35);
}
.photo-overlay-icon {
  opacity: 0;
  color: #fff;
  font-size: 2rem;
  transform: scale(0.7);
  transition: var(--transition);
}
.photo-item:hover .photo-overlay-icon {
  opacity: 1;
  transform: scale(1);
}

/* ===================== LIGHTBOX ===================== */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  backdrop-filter: blur(10px);
}
.lightbox.active {
  opacity: 1;
  pointer-events: all;
}
.lightbox-img {
  max-width: min(90vw, 1200px);
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: 0 0 80px rgba(0,0,0,0.8);
}
.lightbox-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  color: #fff;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}
.lightbox-close:hover { background: rgba(255,255,255,0.2); }
.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  color: #fff;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}
.lightbox-nav:hover { background: rgba(108,99,255,0.5); }
.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }

/* ===================== HERO ===================== */
.hero {
  min-height: 70vh;
  background: var(--gradient-hero);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(108,99,255,0.15) 0%, transparent 70%);
  top: -100px;
  left: -100px;
}
.hero::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,107,157,0.1) 0%, transparent 70%);
  bottom: -50px;
  right: 10%;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(108,99,255,0.15);
  border: 1px solid rgba(108,99,255,0.3);
  color: var(--accent);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}
.hero h1 { margin-bottom: 20px; }
.hero p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 550px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ===================== INPUTS ===================== */
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.input {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1.5px solid var(--border);
  color: var(--text-primary);
  padding: 11px 14px;
  border-radius: 10px;
  font-size: 0.95rem;
  transition: var(--transition);
}
.input:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(108,99,255,0.05);
  box-shadow: 0 0 0 3px rgba(108,99,255,0.15);
}
.input::placeholder { color: var(--text-muted); }
select.input { cursor: pointer; }
textarea.input { resize: vertical; min-height: 90px; }

/* ===================== UPLOAD ZONE ===================== */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: rgba(255,255,255,0.02);
}
.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--accent);
  background: rgba(108,99,255,0.05);
  box-shadow: var(--shadow-glow);
}
.upload-zone-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  display: block;
}
.upload-zone h3 { margin-bottom: 8px; }
.upload-zone p { color: var(--text-muted); font-size: 0.9rem; }

/* ===================== PROGRESS BAR ===================== */
.progress-bar {
  width: 100%;
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--gradient-accent);
  border-radius: 3px;
  transition: width 0.3s ease;
}

/* ===================== BADGES / TAGS ===================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-accent { background: rgba(108,99,255,0.15); color: var(--accent); border: 1px solid rgba(108,99,255,0.2); }
.badge-success { background: rgba(0,212,170,0.15); color: var(--accent-3); border: 1px solid rgba(0,212,170,0.2); }
.badge-warning { background: rgba(255,180,0,0.15); color: #ffb400; border: 1px solid rgba(255,180,0,0.2); }
.badge-info { background: rgba(0,170,255,0.15); color: #00aaff; border: 1px solid rgba(0,170,255,0.2); }

/* ===================== STAT CARDS ===================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.stat-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: var(--transition);
}
.stat-card:hover { border-color: var(--border-hover); transform: translateY(-3px); }
.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}
.stat-icon-purple { background: rgba(108,99,255,0.15); }
.stat-icon-pink { background: rgba(255,107,157,0.15); }
.stat-icon-teal { background: rgba(0,212,170,0.15); }
.stat-icon-blue { background: rgba(0,170,255,0.15); }
.stat-value { font-size: 2rem; font-weight: 800; line-height: 1; margin-bottom: 4px; }
.stat-label { color: var(--text-muted); font-size: 0.82rem; font-weight: 500; }

/* ===================== MODALS ===================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(8px);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.modal-backdrop.active {
  opacity: 1;
  pointer-events: all;
}
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px;
  max-width: 520px;
  width: 100%;
  box-shadow: var(--shadow-hover);
  transform: scale(0.95) translateY(10px);
  transition: transform 0.25s ease;
}
.modal-backdrop.active .modal {
  transform: scale(1) translateY(0);
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.modal-title { font-size: 1.2rem; font-weight: 700; }

/* ===================== TOAST ===================== */
.toast-container {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 18px;
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: var(--shadow-hover);
  min-width: 280px;
  animation: toastIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
.toast-success { border-color: rgba(0,212,170,0.3); }
.toast-error { border-color: rgba(255,70,70,0.3); }
.toast-info { border-color: rgba(108,99,255,0.3); }

@keyframes toastIn {
  from { transform: translateX(120%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}
@keyframes toastOut {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(120%); opacity: 0; }
}

/* ===================== SEARCH PAGE ===================== */
.search-upload-area {
  border: 2px dashed rgba(108,99,255,0.3);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  text-align: center;
  background: rgba(108,99,255,0.03);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.search-upload-area::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: var(--gradient-accent);
  border-radius: var(--radius-xl);
  opacity: 0;
  z-index: -1;
  transition: var(--transition);
}
.search-upload-area:hover {
  border-color: var(--accent);
  background: rgba(108,99,255,0.08);
}
.search-preview {
  max-width: 280px;
  max-height: 280px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin: 0 auto 20px;
  box-shadow: var(--shadow-hover);
  border: 2px solid var(--border-hover);
}
.result-photo-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
}
.result-photo-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.result-photo-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}
.confidence-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(108,99,255,0.4);
  color: var(--accent);
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
}
.ai-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 60px 0;
  color: var(--text-secondary);
}
.ai-orb {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--gradient-accent);
  box-shadow: 0 0 40px var(--accent-glow);
  animation: orbPulse 1.5s ease-in-out infinite;
}
@keyframes orbPulse {
  0%, 100% { transform: scale(1); box-shadow: 0 0 40px var(--accent-glow); }
  50% { transform: scale(1.1); box-shadow: 0 0 70px rgba(108,99,255,0.5); }
}

/* ===================== FOOTER ===================== */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  margin-top: auto;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ===================== UTILITIES ===================== */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.mt-0 { margin-top: 0; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.text-center { text-align: center; }
.text-sm { font-size: 0.85rem; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.w-full { width: 100%; }
.hidden { display: none !important; }

/* ===================== EMPTY STATE ===================== */
.empty-state {
  text-align: center;
  padding: 80px 40px;
  color: var(--text-secondary);
}
.empty-state-icon {
  font-size: 4rem;
  margin-bottom: 20px;
  opacity: 0.4;
}
.empty-state h3 { margin-bottom: 12px; color: var(--text-primary); }
.empty-state p { margin-bottom: 24px; max-width: 400px; margin-left: auto; margin-right: auto; }

/* ===================== RESPONSIVE ===================== */
@media (max-width: 768px) {
  .navbar-inner { height: 60px; padding: 0 16px; }
  .navbar-logo span { display: none; } /* Hide text logo on very small screens if needed */
  .navbar-links { display: flex; gap: 4px; }
  .navbar-links a { padding: 6px 10px; font-size: 0.8rem; }
  
  .hero { min-height: auto; padding: 60px 0; }
  .photos-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  
  /* Show nav buttons but smaller on mobile */
  .lightbox-nav { width: 40px; height: 40px; font-size: 1.2rem; }
  .lightbox-prev { left: 10px; }
  .lightbox-next { right: 10px; }
}

@media (max-width: 480px) {
  .navbar-links a { padding: 6px 8px; }
  .navbar-links a span.nav-text { display: none; } /* Could hide text and keep only icons/emojis if space is super tight */
}

/* Admin Mobile Enhancements */
.admin-header-mobile { display:none; position:fixed; top:0; left:0; right:0; height:60px; background:var(--bg-secondary); border-bottom:1px solid var(--border); align-items:center; justify-content:space-between; padding:0 20px; z-index:100; }
.sidebar-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,0.6); z-index:150; backdrop-filter:blur(4px); }
.sidebar-overlay.active { display:block; }

@media(max-width:900px) {
  .admin-header-mobile { display:flex; }
  .admin-layout { grid-template-columns:1fr !important; padding-top:60px; }
  .sidebar { 
    position:fixed !important; 
    left:-240px; 
    top:0; 
    bottom:0; 
    z-index:200; 
    width:240px; 
    transition:var(--transition); 
    display:flex !important; 
    box-shadow:20px 0 50px rgba(0,0,0,0.5);
  }
  .sidebar.active { left:0; }
  .main-content { padding:24px 20px !important; }
}