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

:root {
  --bg: #0a0a0a;
  --surface: #141414;
  --border: #222;
  --text: #e0e0e0;
  --muted: #666;
  --red: #ef4444;
  --green: #22c55e;
  --amber: #f59e0b;
  --gray: #52525b;
  --purple: #a855f7;
  --nav-h: 52px;
  --btn-h: 76px;
  --meta-h: 32px;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, sans-serif;
  overscroll-behavior: none;
  -webkit-tap-highlight-color: transparent;
}

/* ── Nav ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0 0.75rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  z-index: 10;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.nav::-webkit-scrollbar { display: none; }

.nav-tab {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.65rem;
  border-radius: 99px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background 150ms, color 150ms;
}
.nav-tab:hover { color: var(--text); }
.nav-tab.active { background: #fff; color: #000; }
.nav-tab.active .badge { background: #000; color: #fff; }

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.25rem;
  height: 1.25rem;
  padding: 0 0.3rem;
  border-radius: 99px;
  background: var(--border);
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 600;
}

.nav-logout {
  margin-left: auto;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.8rem;
  padding: 0.35rem 0.5rem;
}
.nav-logout:hover { color: var(--text); }

.nav-nsfw-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.35rem 0.4rem;
  font-size: 1rem;
  opacity: 0.3;
  transition: opacity 150ms;
  flex-shrink: 0;
}
.nav-nsfw-toggle:hover, .nav-nsfw-toggle.nsfw-on { opacity: 1; }

.nav-training {
  font-size: 0.9rem;
  color: var(--amber);
  flex-shrink: 0;
  animation: spin 1.5s linear infinite;
  display: inline-flex;
  align-items: center;
}

.help-btn {
  position: relative;
  cursor: default;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.35rem 0.4rem;
  flex-shrink: 0;
  user-select: none;
}
.help-btn:hover, .help-btn:focus { color: var(--text); outline: none; }

.help-tooltip {
  display: none;
  position: fixed;
  top: var(--nav-h);
  right: 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.85rem;
  min-width: 180px;
  z-index: 100;
  box-shadow: 0 4px 16px rgba(0,0,0,.5);
}
.help-btn:hover .help-tooltip,
.help-btn:focus .help-tooltip { display: block; }

.help-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  padding: 0.25rem 0;
  font-size: 0.8rem;
  color: var(--text);
}

kbd {
  background: var(--border);
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
  font-size: 0.75rem;
  font-family: inherit;
  color: var(--text);
  flex-shrink: 0;
}

/* ── Card ── */
#card {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  padding-top: var(--nav-h);
}

/* ── Image ── */
.image-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #000;
}

.image-wrap img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
}

/* ── Meta bar ── */
.meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--meta-h);
  padding: 0 1rem;
  background: var(--surface);
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
}
.source { color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.source-link { text-decoration: none; transition: color 150ms; }
.source-link:hover { color: var(--text); }
.count { color: var(--muted); }

/* ── Buttons ── */
.btn-row {
  display: flex;
  height: var(--btn-h);
  border-top: 1px solid var(--border);
}

.btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  border: none;
  cursor: pointer;
  background: var(--surface);
  color: var(--text);
  transition: background 100ms, transform 80ms;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.btn:active { transform: scale(0.94); }
.btn + .btn { border-left: 1px solid var(--border); }

.btn-icon { font-size: 1.4rem; line-height: 1; }
.btn-label { font-size: 0.65rem; font-weight: 700; letter-spacing: 0.08em; color: var(--muted); }

.btn-bad   { --accent: var(--red); }
.btn-good  { --accent: var(--green); }
.btn-fav   { --accent: var(--amber); }
.btn-skip  { --accent: var(--gray); }
.btn-nsfw  { --accent: var(--purple); }

.btn-bad:hover,   .btn-bad:active   { background: color-mix(in srgb, var(--red) 15%, var(--surface)); }
.btn-good:hover,  .btn-good:active  { background: color-mix(in srgb, var(--green) 15%, var(--surface)); }
.btn-fav:hover,   .btn-fav:active   { background: color-mix(in srgb, var(--amber) 15%, var(--surface)); }
.btn-skip:hover,  .btn-skip:active  { background: color-mix(in srgb, var(--gray) 20%, var(--surface)); }
.btn-nsfw:hover,  .btn-nsfw:active  { background: color-mix(in srgb, var(--purple) 15%, var(--surface)); }

.btn-bad .btn-icon   { color: var(--red); }
.btn-good .btn-icon  { color: var(--green); }
.btn-fav .btn-icon   { color: var(--amber); }
.btn-skip .btn-icon  { color: var(--gray); }
.btn-nsfw .btn-icon  { color: var(--purple); }

/* ── HTMX transition ── */
#card.htmx-swapping { opacity: 0; transition: opacity 120ms ease; }
#card.htmx-settling  { opacity: 1; transition: opacity 120ms ease; }

/* ── Done state ── */
.done {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 2rem;
  text-align: center;
}
.done-title { font-size: 1.25rem; font-weight: 600; }
.done-hint { color: var(--muted); font-size: 0.9rem; }
.done-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; justify-content: center; margin-top: 0.5rem; }
.done-btn {
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  font-size: 0.875rem;
}
.done-btn:hover { border-color: #444; }
.done-btn-scrape,
.done-btn-train { cursor: pointer; font-family: inherit; }
.done-btn-scrape:hover { border-color: #60a5fa; color: #60a5fa; }
.done-btn-train:hover  { border-color: var(--amber); color: var(--amber); }
.done-btn-train:disabled { color: var(--amber); border-color: var(--amber); opacity: 0.6; cursor: not-allowed; }

/* ── Train result ── */
.train-spinner {
  display: none;
  color: var(--muted);
  font-size: 0.85rem;
  animation: pulse 1.2s ease-in-out infinite;
}
.train-spinner.htmx-request { display: inline; }

.train-result {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  border: 1px solid var(--border);
}
.train-ok      { border-color: var(--green);  color: var(--green); }
.train-err     { border-color: var(--red);    color: var(--red); }
.train-pending { border-color: var(--amber);  color: var(--amber); }
.train-icon { font-size: 1rem; }
.train-spin { display: inline-block; animation: spin 1s linear infinite; }

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

/* ── Login page ── */
.login-wrap {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: min(320px, 90vw);
}
.login-title { font-size: 1.5rem; font-weight: 700; text-align: center; letter-spacing: 0.05em; }
.login-form input {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font-size: 1rem;
  outline: none;
}
.login-form input:focus { border-color: #555; }
.login-form button {
  padding: 0.75rem;
  border: none;
  border-radius: 6px;
  background: #fff;
  color: #000;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}
.login-error { color: var(--red); font-size: 0.875rem; text-align: center; }