:root {
  --bg: #0f0f13;
  --surface: #1a1a24;
  --surface2: #22222e;
  --border: #2e2e3e;
  --accent: #7c6af7;
  --accent-dark: #5b4ed0;
  --accent-ok: #48bb78;
  --accent-danger: #e53e3e;
  --text: #e8e8f0;
  --text-muted: #888899;
  --radius: 10px;
  --gap: 16px;
}

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

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  min-height: 100vh;
  padding-bottom: env(safe-area-inset-bottom);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Nav */
.nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 var(--gap);
  display: flex;
  align-items: center;
  gap: var(--gap);
  height: 52px;
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-brand { font-weight: 700; font-size: 1.05rem; color: var(--text); }
.nav-links { display: flex; gap: 4px; flex: 1; }
.nav-link {
  padding: 8px 12px;
  border-radius: 7px;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active { background: var(--surface2); color: var(--text); text-decoration: none; }
.nav-logout { margin-left: auto; }

/* Container */
.container { max-width: 1100px; margin: 0 auto; padding: var(--gap); }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--gap);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 8px;
  border: none;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  min-height: 44px;
  min-width: 44px;
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--accent-dark); }
.btn-success { background: var(--accent-ok); color: #fff; }
.btn-danger { background: var(--accent-danger); color: #fff; }
.btn-ghost { background: var(--surface2); color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 7px 13px; font-size: 0.82rem; min-height: 36px; }

/* Forms */
label { display: block; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 5px; font-weight: 500; }
input[type="text"], input[type="password"], textarea, select {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.95rem;
  padding: 10px 12px;
  outline: none;
  transition: border-color 0.15s;
  font-family: inherit;
}
input:focus, textarea:focus, select:focus { border-color: var(--accent); }
textarea { resize: vertical; min-height: 100px; }

.form-group { margin-bottom: 14px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap); }

/* Alerts */
.alert {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.9rem;
  margin-bottom: var(--gap);
}
.alert-error { background: #2d1b1b; border: 1px solid var(--accent-danger); color: #fc8181; }
.alert-success { background: #1a2d22; border: 1px solid var(--accent-ok); color: #9ae6b4; }
.alert-info { background: #1a1f2d; border: 1px solid var(--accent); color: #a3bffa; }

/* Style grid */
.style-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}
.style-card {
  background: var(--surface2);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  cursor: pointer;
  transition: border-color 0.15s;
  position: relative;
}
.style-card:hover { border-color: var(--accent); }
.style-card.selected { border-color: var(--accent); background: #1e1b38; }
.style-card-thumb {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 6px;
  background: var(--border);
  margin-bottom: 8px;
}
.style-card-name { font-size: 0.85rem; font-weight: 600; margin-bottom: 3px; word-break: break-word; }
.style-card-tags { font-size: 0.75rem; color: var(--text-muted); }
.style-card-actions { display: flex; gap: 6px; margin-top: 8px; }

/* Style mode toggle */
.mode-toggle {
  display: flex;
  background: var(--surface2);
  border-radius: 8px;
  border: 1px solid var(--border);
  overflow: hidden;
}
.mode-btn {
  flex: 1;
  padding: 9px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  transition: background 0.15s, color 0.15s;
  min-height: 44px;
}
.mode-btn.active { background: var(--accent); color: #fff; }

/* Drop zone */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  font-size: 0.9rem;
}
.dropzone:hover, .dropzone.drag-over { border-color: var(--accent); background: #1a1a2a; }
.dropzone input[type="file"] { display: none; }

/* Image preview strip */
.img-strip { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.img-thumb-wrap { position: relative; width: 72px; height: 72px; }
.img-thumb { width: 72px; height: 72px; object-fit: cover; border-radius: 6px; border: 1px solid var(--border); }
.img-thumb-remove {
  position: absolute; top: -6px; right: -6px;
  width: 20px; height: 20px;
  background: var(--accent-danger);
  border-radius: 50%;
  border: none;
  color: #fff;
  font-size: 12px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}

/* Generation result */
.gen-result {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  align-items: start;
}
.gen-image { width: 100%; border-radius: var(--radius); border: 1px solid var(--border); }
.gen-actions { display: flex; flex-direction: column; gap: 10px; }
.gen-meta { font-size: 0.82rem; color: var(--text-muted); margin-top: 8px; }

/* Batch review grid */
.review-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.review-card {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  position: relative;
}
.review-card.approved { border-color: var(--accent-ok); }
.review-card.rejected { border-color: var(--accent-danger); opacity: 0.5; }
.review-card img { width: 100%; border-radius: 6px; margin-bottom: 8px; }
.review-card-phrase { font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; word-break: break-word; }
.review-card-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.review-card-status { font-size: 0.78rem; color: var(--text-muted); margin-top: 4px; }
.review-card-check {
  position: absolute; top: 8px; right: 8px;
  width: 24px; height: 24px;
  cursor: pointer;
  accent-color: var(--accent);
}

/* Status badge */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-pending { background: #2d2d1a; color: #e6c97a; }
.badge-ok { background: #1a2d22; color: #9ae6b4; }
.badge-fail { background: #2d1b1b; color: #fc8181; }
.badge-running { background: #1a1f2d; color: #a3bffa; }

/* Progress bar */
.progress-bar-wrap { background: var(--surface2); border-radius: 4px; height: 8px; overflow: hidden; margin: 8px 0; }
.progress-bar { height: 100%; background: var(--accent); transition: width 0.3s; border-radius: 4px; }

/* Spinner */
.spinner {
  display: inline-block;
  width: 20px; height: 20px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Login page */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--gap);
}
.login-box {
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px;
}
.login-title { font-size: 1.4rem; font-weight: 700; margin-bottom: 6px; }
.login-sub { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 24px; }

/* Responsive */
@media (min-width: 640px) {
  .review-grid { grid-template-columns: repeat(4, 1fr); }
}
@media (min-width: 900px) {
  .review-grid { grid-template-columns: repeat(6, 1fr); }
  .style-grid { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); }
}

@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
  .gen-result { grid-template-columns: 1fr; }
  .nav-links { gap: 2px; }
  .nav-link { padding: 8px 8px; font-size: 0.82rem; }
  .container { padding: 12px; }
}

/* Utility */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.gap-sm { gap: 8px; }
.gap { gap: var(--gap); }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.mt { margin-top: var(--gap); }
.mt-sm { margin-top: 8px; }
.text-muted { color: var(--text-muted); font-size: 0.85rem; }
.text-sm { font-size: 0.85rem; }
.hidden { display: none !important; }
.w-full { width: 100%; }
h2 { font-size: 1.2rem; font-weight: 700; margin-bottom: var(--gap); }
h3 { font-size: 1rem; font-weight: 600; margin-bottom: 10px; }