/* ============================================================
   main.css — Global styles
   AI Gallery · Dark editorial aesthetic
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;1,400&family=DM+Sans:wght@300;400;500&display=swap');

/* ── CSS Variables ─────────────────────────────────────── */
:root {
  --bg:          #0d0d0d;
  --bg-2:        #141414;
  --bg-3:        #1c1c1c;
  --border:      rgba(255,255,255,0.08);
  --text:        #f0f0f0;
  --text-muted:  #888;
  --text-dim:    #555;
  --accent:      #e8d5b0;
  --accent-dim:  rgba(232,213,176,0.15);
  --danger:      #e05555;
  --success:     #5ec97e;
  --warning:     #e0a855;
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-pill: 999px;
  --gap-sm:      8px;
  --gap-md:      12px;
  --gap-lg:      24px;
  --header-h:    60px;
  --filter-h:    52px;
  --transition:  0.2s ease;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-ui:      'DM Sans', system-ui, sans-serif;
}

/* ── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-weight: 300;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { cursor: pointer; font-family: var(--font-ui); }
input, textarea, select {
  font-family: var(--font-ui);
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 14px;
  outline: none;
  transition: border-color var(--transition);
}
input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
}

/* ── Typography ─────────────────────────────────────────── */
h1, h2, h3 { font-family: var(--font-display); font-weight: 400; }
h1 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.2rem; }

/* ── Layout Helpers ────────────────────────────────────── */
.container { max-width: 1800px; margin: 0 auto; padding: 0 var(--gap-lg); }
.flex { display: flex; }
.items-center { align-items: center; }
.gap-sm { gap: var(--gap-sm); }
.gap-md { gap: var(--gap-md); }
.sr-only { position: absolute; width:1px; height:1px; overflow:hidden; clip:rect(0,0,0,0); }

/* ── Header ─────────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(13,13,13,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  display: flex;
  align-items: center;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  color: var(--accent);
}
.logo span { color: var(--text-muted); font-style: italic; font-size: 0.9em; }

.theme-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}
.theme-nav a {
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  color: var(--text-muted);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}
.theme-nav a:hover,
.theme-nav a.active {
  color: var(--text);
  background: var(--bg-3);
}
.theme-nav a.active {
  color: var(--accent);
}

.header-actions { display: flex; align-items: center; gap: var(--gap-sm); }

/* Search button */
.btn-search {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: all var(--transition);
}
.btn-search:hover { color: var(--text); border-color: var(--text-muted); }

/* ── Tag Pill ────────────────────────────────────────────── */
.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition);
}
.tag-pill:hover { border-color: var(--accent-dim); color: var(--accent); }
.tag-pill.active { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }
.tag-pill .remove { opacity: 0.6; font-size: 14px; line-height: 1; }
.tag-pill .remove:hover { opacity: 1; }

/* ── Tag Filter Bar ──────────────────────────────────────── */
.filter-bar {
  position: sticky;
  top: var(--header-h);
  background: rgba(13,13,13,0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 90;
  height: var(--filter-h);
  display: flex;
  align-items: center;
}
.filter-bar .container {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.filter-bar .container::-webkit-scrollbar { display: none; }
.filter-all {
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  white-space: nowrap;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}
.filter-all:hover, .filter-all.active {
  color: var(--text);
  border-color: var(--text-muted);
}
.filter-all.active { color: var(--accent); border-color: var(--accent); background: var(--accent-dim); }
.filter-expand {
  font-size: 12px;
  color: var(--text-dim);
  background: transparent;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  padding: 5px 8px;
  transition: color var(--transition);
}
.filter-expand:hover { color: var(--text-muted); }

/* ── Active Filter Bar ───────────────────────────────────── */
.active-filter-bar {
  padding: var(--gap-sm) 0;
  display: none;
}
.active-filter-bar.visible {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
}
.active-filter-bar .container {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  flex-wrap: wrap;
}
.active-filter-label {
  font-size: 12px;
  color: var(--text-dim);
}
.btn-clear-all {
  font-size: 12px;
  color: var(--text-dim);
  background: transparent;
  border: none;
  cursor: pointer;
  text-decoration: underline;
  transition: color var(--transition);
}
.btn-clear-all:hover { color: var(--text-muted); }

/* AND/OR toggle */
.tag-mode-toggle {
  display: flex;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  overflow: hidden;
  flex-shrink: 0;
}
.tag-mode-toggle button {
  padding: 3px 10px;
  font-size: 11px;
  background: transparent;
  border: none;
  color: var(--text-dim);
  transition: all var(--transition);
}
.tag-mode-toggle button.active {
  background: var(--accent-dim);
  color: var(--accent);
}
.tag-mode-toggle button:disabled {
  opacity: 0.35;
  cursor: default;
}

/* ── Tag Modal ───────────────────────────────────────────── */
.tag-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--gap-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.tag-modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.tag-modal-box {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  width: min(600px, 100%);
  max-height: min(80vh, 640px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0,0,0,0.6);
}
.tag-modal-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.tag-modal-header h3 {
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  margin-right: auto;
}
.tag-modal-header button {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
  line-height: 1;
  padding: 0 2px;
  transition: color var(--transition);
}
.tag-modal-header button:hover { color: var(--text); }
.tag-modal-search {
  padding: 10px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.tag-modal-search input { width: 100%; }
.tag-modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 14px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-content: flex-start;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
  min-height: 100px;
}
.tag-modal-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
#tag-modal-selected {
  font-size: 12px;
  color: var(--text-muted);
  margin-right: auto;
}
.tag-count {
  font-size: 10px;
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
  margin-left: 3px;
}


/* ── Sort Controls ───────────────────────────────────────── */
.sort-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--gap-md) 0;
}
.sort-bar .result-count { font-size: 13px; color: var(--text-muted); }
.sort-select {
  font-size: 13px;
  padding: 5px 10px;
  background: var(--bg-2);
  color: var(--text-muted);
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 400;
  border: 1px solid transparent;
  transition: all var(--transition);
}
.btn-primary {
  background: var(--accent);
  color: #0d0d0d;
  border-color: var(--accent);
}
.btn-primary:hover { opacity: 0.9; }
.btn-secondary {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border);
}
.btn-secondary:hover { color: var(--text); border-color: var(--text-muted); }
.btn-danger {
  background: transparent;
  color: var(--danger);
  border-color: var(--danger);
}
.btn-danger:hover { background: rgba(224,85,85,0.1); }

/* ── Notifications ───────────────────────────────────────── */
.notification-banner {
  position: fixed;
  bottom: var(--gap-lg);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 20px;
  font-size: 13px;
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.5);
  animation: slideUp 0.2s ease;
}
.notification-banner.error { border-color: var(--danger); color: var(--danger); }
.notification-banner.success { border-color: var(--success); color: var(--success); }
@keyframes slideUp {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ── Search Overlay ──────────────────────────────────────── */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 15vh;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.search-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.search-box {
  width: 100%;
  max-width: 560px;
  padding: 0 var(--gap-lg);
}
.search-input-wrap {
  display: flex;
  align-items: center;
  gap: var(--gap-sm);
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  transition: border-color var(--transition);
}
.search-input-wrap:focus-within { border-color: var(--accent); }
.search-input-wrap svg { color: var(--text-muted); flex-shrink: 0; }
.search-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 16px;
  padding: 0;
}
.search-input::placeholder { color: var(--text-dim); }
.search-suggestions {
  margin-top: 4px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.15s ease;
}
.search-suggestions.visible { max-height: 300px; }
.suggestion-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  font-size: 13px;
  cursor: pointer;
  transition: background var(--transition);
}
.suggestion-item:hover, .suggestion-item.focused { background: var(--bg-3); }
.suggestion-count { color: var(--text-dim); font-size: 12px; }

/* ── Empty State ─────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 80px var(--gap-lg);
  color: var(--text-muted);
}
.empty-state h3 { font-family: var(--font-display); font-size: 1.4rem; margin-bottom: 8px; color: var(--text); }
.empty-state p { font-size: 14px; margin-bottom: 20px; }

/* ── Loading Spinner ─────────────────────────────────────── */
.spinner {
  width: 24px; height: 24px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.load-trigger {
  display: flex;
  justify-content: center;
  padding: 40px;
}

/* ── Prefers Reduced Motion ──────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 640px) {
  :root { --gap-lg: 12px; }
  .theme-nav { display: none; }
}