:root {
  /* Palette */
  --hue: 220;
  --accent: #0ea5ff;

  --bg-light: #f4f5f7;
  --surface-light: #ffffff;
  --text-light: #1e293b;
  --shadow-light: rgba(148, 163, 184, 0.3);

  --bg-dark: #0f172a;
  --surface-dark: #1e293b;
  --text-dark: #f1f5f9;
  --shadow-dark: rgba(0, 0, 0, 0.5);

  /* Defaults */
  --bg: var(--bg-light);
  --surface: var(--surface-light);
  --text: var(--text-light);
  --shadow: var(--shadow-light);

  --radius: 16px;
  --depth: 6px;
  --ease-elastic: cubic-bezier(0.34, 1.56, 0.64, 1);
}

body.dark-mode {
  --bg: var(--bg-dark);
  --surface: var(--surface-dark);
  --text: var(--text-dark);
  --shadow: var(--shadow-dark);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  transition: background 0.4s ease, color 0.4s ease;
  min-height: 100vh;
}

/* --- Layout --- */
.app-wrapper {
  max-width: 680px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  position: relative;
  z-index: 1;
}

/* --- Header --- */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  perspective: 1000px;
}

h1 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  transform-style: preserve-3d;
  text-shadow: 0 4px 12px var(--shadow);
}

h1 span { color: var(--accent); }

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

/* --- Header buttons --- */
.micro-btn {
  background: var(--surface);
  border: none;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  cursor: pointer;
  box-shadow:
    0 var(--depth) 0 var(--shadow),
    0 calc(var(--depth) + 4px) 8px rgba(0,0,0,0.1);
  transition: transform 0.1s, box-shadow 0.1s;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
}

.micro-btn:active {
  transform: translateY(var(--depth));
  box-shadow: 0 0 0 var(--shadow);
}

.micro-btn svg { width: 20px; height: 20px; stroke-width: 2.5; }

/* --- Genre Pills --- */
.scroll-mask {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 2rem;
  padding-bottom: 8px;
}

.pill {
  min-width: 0;
  padding: 0.6rem 0.5rem;
  text-align: center;
  background: var(--surface);
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
  cursor: pointer;
  box-shadow: 0 4px 0 var(--shadow);
  transition: background 0.2s, color 0.2s, opacity 0.2s;
  opacity: 0.7;
}

.pill:hover { opacity: 1; }

.pill.active {
  background: var(--accent);
  color: white;
  box-shadow: 0 4px 0 rgba(14, 165, 255, 0.4);
  opacity: 1;
}

.pill:active {
  box-shadow: 0 0 0 transparent;
}

/* --- Meme viewer --- */
.card-scene {
  margin-bottom: 2rem;
}

.meme-card {
  background: var(--surface);
  border-radius: 24px;
  padding: 1rem;
  min-height: 400px;
  position: relative;
  box-shadow:
    0 20px 40px -10px var(--shadow),
    0 0 0 1px rgba(0,0,0,0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.meme-image-container {
  width: 100%;
  height: 100%;
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  background: var(--bg);
}

.meme-image-container img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  max-height: 500px;
}

.loading-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  z-index: 2;
  transition: opacity 0.3s;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--accent);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* --- Credit --- */
.credit {
  text-align: center;
  margin-bottom: 1.5rem;
  min-height: 1.5rem;
}

/* --- Action Bar --- */
.actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  margin-bottom: 3rem;
}

.main-btn {
  background: var(--accent);
  color: white;
  border: none;
  padding: 1rem;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: 16px;
  cursor: pointer;
  box-shadow: 0 6px 0 rgba(10, 116, 180, 1);
  transition: all 0.1s;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: relative;
  overflow: hidden;
}

.main-btn:active {
  transform: translateY(6px);
  box-shadow: 0 0 0 transparent;
}

.main-btn::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(rgba(255,255,255,0.2), transparent);
  pointer-events: none;
}

.save-btn {
  width: 60px;
  border-radius: 16px;
  background: var(--surface);
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: 0 6px 0 var(--shadow);
  transition: all 0.1s;
  color: var(--text);
}

.save-btn:active {
  transform: translateY(6px);
  box-shadow: 0 0 0 transparent;
}

.save-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: 0 6px 0 var(--shadow);
}

/* --- 18+ Notice --- */
.age-gate {
  width: min(420px, calc(100% - 32px));
  margin: auto;
  padding: 1.75rem 1.5rem 1.5rem;
  border: none;
  border-radius: 24px;
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  text-align: center;
}
.age-gate:focus { outline: none; }
.age-gate::backdrop { background: rgba(15, 23, 42, 0.88); backdrop-filter: blur(8px); }
.age-gate[open] { animation: age-pop 0.3s var(--ease-elastic); }
@keyframes age-pop { from { transform: scale(0.92); opacity: 0; } }
.age-badge {
  display: inline-grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin-bottom: 0.75rem;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  font-size: 1.35rem;
  font-weight: 800;
  box-shadow: 0 4px 0 rgba(10, 116, 180, 1);
}
.age-gate h2 { font-size: 1.4rem; font-weight: 800; margin-bottom: 0.5rem; }
.age-gate p { opacity: 0.75; line-height: 1.5; margin-bottom: 1.25rem; }
.age-actions { display: flex; gap: 0.75rem; }
.age-actions > * {
  flex: 1;
  padding: 0.85rem 1rem;
  border: none;
  border-radius: 16px;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.1s;
}
.age-yes { background: var(--accent); color: white; box-shadow: 0 6px 0 rgba(10, 116, 180, 1); }
.age-no { background: var(--bg); color: var(--text); box-shadow: 0 6px 0 var(--shadow); }
.age-actions > *:active { transform: translateY(6px); box-shadow: 0 0 0 transparent; }

/* --- Saved drawer --- */
.drawer {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: var(--surface);
  border-radius: 24px 24px 0 0;
  padding: 1.5rem;
  transform: translateY(105%);
  transition: transform 0.4s var(--ease-elastic);
  z-index: 100;
  box-shadow: 0 -10px 40px rgba(0,0,0,0.1);
  max-height: 60vh;
  overflow-y: auto;
}

.drawer.open { transform: translateY(0); }

.drawer-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.close-drawer {
  background: none;
  border: none;
  font-weight: bold;
  color: var(--accent);
  cursor: pointer;
}

.saved-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.saved-thumb {
  aspect-ratio: 1;
  border-radius: 8px;
  background: var(--bg);
  overflow: hidden;
  position: relative;
}

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

.saved-thumb .del {
  position: absolute; top: 4px; right: 4px;
  background: rgba(0,0,0,0.6); color: white;
  width: 20px; height: 20px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; cursor: pointer;
}

/* --- FAQ --- */
.seo-section {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--shadow);
}

.seo-section h2 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--accent);
}

details {
  margin-bottom: 1rem;
  background: var(--surface);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 0 var(--shadow);
  transition: all 0.2s;
}

details[open] { box-shadow: 0 4px 12px var(--shadow); }

summary {
  padding: 1rem;
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

summary::-webkit-details-marker { display: none; }

summary::after {
  content: '+';
  color: var(--accent);
  font-size: 1.5rem;
  font-weight: 300;
  transition: transform 0.2s;
}

details[open] summary::after { transform: rotate(45deg); }

.faq-answer {
  padding: 1rem;
  padding-top: 0;
  line-height: 1.6;
  font-size: 0.95rem;
  color: var(--text);
  opacity: 0.9;
}

/* --- Footer --- */
.credit-bar {
  margin-top: 3rem;
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.6;
}

@media (max-width: 500px) {
  .scroll-mask { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  h1 { font-size: 1.8rem; }
  .saved-grid { grid-template-columns: repeat(2, 1fr); }
}

.credit-bar a { color: inherit; text-underline-offset: 3px; }
.credit-bar a:hover { color: var(--accent); }