:root {
  --bg: #0f172a;
  --card: #1e293b;
  --border: #334155;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --primary: #3b82f6;
  --primary-hover: #60a5fa;
  --danger: #ef4444;
  --danger-hover: #f87171;
  --success-bg: #052e16;
  --success-text: #86efac;
  --error-bg: #450a0a;
  --error-text: #fca5a5;
  --warning-bg: #422006;
  --warning-text: #fcd34d;
  --nav-bg: #020617;
  --nav-text: #f1f5f9;
}

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

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.5;
}

nav {
  background: var(--nav-bg);
  color: var(--nav-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  height: 52px;
}

.brand {
  position: relative;
  display: inline-block;
  width: calc(5.5rem * 400 / 120);
  height: 5.5rem;
  text-decoration: none;
}

.brand-logo {
  position: absolute;
  inset: 0;
  height: 100%;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-links a { color: #94a3b8; text-decoration: none; font-size: 0.9rem; }
.nav-links a:hover { color: var(--nav-text); }

.nav-user-menu { position: relative; }
.nav-user {
  color: #94a3b8;
  font-size: 0.85rem;
  cursor: pointer;
  list-style: none;
}
.nav-user::-webkit-details-marker { display: none; }
.nav-user:hover { color: var(--nav-text); }
.nav-user-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  min-width: 160px;
  padding: 0.25rem;
  display: flex;
  flex-direction: column;
  z-index: 20;
}
.nav-user-dropdown a,
.nav-user-dropdown .btn-link {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--text);
}
.nav-user-dropdown a:hover,
.nav-user-dropdown .btn-link:hover {
  background: var(--bg);
  color: var(--text);
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.page-header h1 { font-size: 1.5rem; font-weight: 600; }
.page-actions { display: flex; gap: 0.5rem; align-items: center; }

.info-bar {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.6rem 1rem;
  font-size: 0.875rem;
  margin-bottom: 1rem;
  color: var(--muted);
}

.info-bar a { color: var(--primary); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.card h2 {
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.flash {
  border-radius: 6px;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.flash-success { background: var(--success-bg); color: var(--success-text); }
.flash-error { background: var(--error-bg); color: var(--error-text); }
.flash-warning { background: var(--warning-bg); color: var(--warning-text); }

label {
  display: block;
  margin-bottom: 0.75rem;
  font-size: 0.875rem;
  color: var(--muted);
}

label input:not([type=checkbox]):not([type=color]),
label select {
  display: block;
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
  background: var(--bg);
  color: var(--text);
}

label input[type=color] {
  display: block;
  margin-top: 0.25rem;
  padding: 2px;
  height: 36px;
  width: 64px;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
}

label input[type=range] {
  -webkit-appearance: none;
  appearance: none;
  display: block;
  width: 100%;
  margin-top: 0.5rem;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  outline: none;
}

label input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
}

label input[type=range]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border: none;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
}

label input[type=range]::-moz-range-track {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
}

label.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
  cursor: pointer;
}

.form-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.form-row input {
  flex: 1;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
  background: var(--bg);
  color: var(--text);
}

button, .btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}

button:hover, .btn:hover { background: var(--primary-hover); }

.btn-secondary { background: #64748b; }
.btn-secondary:hover { background: #475569; }

button.btn-danger, .btn-danger { background: var(--danger); }
button.btn-danger:hover, .btn-danger:hover { background: var(--danger-hover); }

.btn-link {
  background: none;
  color: #94a3b8;
  padding: 0;
  font-size: 0.9rem;
}

.btn-link:hover { color: var(--nav-text); background: none; }

.btn-sm { padding: 0.25rem 0.6rem; font-size: 0.8rem; border-radius: 4px; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }

th {
  text-align: left;
  padding: 0.5rem 0.75rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}

td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

tr:last-child td { border-bottom: none; }
td a { color: var(--primary); text-decoration: none; }
td a:hover { text-decoration: underline; }
.row-actions { display: flex; gap: 0.4rem; }

.badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-published { background: var(--success-bg); color: var(--success-text); }
.badge-draft { background: #334155; color: var(--muted); }

.empty { color: var(--muted); font-size: 0.9rem; padding: 0.5rem 0; }

.storage-usage { color: var(--muted); font-size: 0.85rem; margin-top: 0.5rem; }

.quota-form { display: inline-flex; gap: 0.4rem; align-items: center; margin-left: 0.5rem; }
.quota-input { width: 80px; }

.edit-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 640px) { .edit-grid { grid-template-columns: 1fr; } }

.slide-list { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; margin-top: 1rem; }

.slide-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
}

.slide-item img { width: 80px; height: 55px; object-fit: cover; border-radius: 4px; flex-shrink: 0; }
.slide-info { flex: 1; min-width: 0; }
.slide-num { font-size: 0.75rem; color: var(--muted); display: block; }
.drag-handle { cursor: grab; color: var(--muted); font-size: 1.2rem; flex-shrink: 0; padding: 0 2px; user-select: none; }
.slide-transition-form select { padding: 0.25rem 0.5rem; border: 1px solid var(--border); border-radius: 6px; font-size: 0.8rem; background: var(--bg); color: var(--text); }
.slide-caption-form { margin-bottom: 0.25rem; }
.slide-caption-form input { width: 100%; padding: 0.25rem 0.5rem; border: 1px solid var(--border); border-radius: 6px; font-size: 0.85rem; background: var(--bg); color: var(--text); }
.drag-handle:active { cursor: grabbing; }
.slide-item.dragging { opacity: 0.35; }
.slide-item.drag-over { border-color: var(--primary); background: var(--card); }

.auth-form {
  max-width: 360px;
  margin: 4rem auto;
  padding: 2rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.auth-form h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-align: center;
  letter-spacing: -0.03em;
}

.auth-logo {
  display: block;
  width: 100%;
  height: auto;
  margin: 0 auto 1.5rem;
}

.auth-form button { width: 100%; margin-top: 0.5rem; padding: 0.625rem; }

.error-page { text-align: center; padding: 4rem 1rem; }
.error-page h1 { font-size: 1.5rem; margin-bottom: 1rem; color: var(--muted); }
.error-page a { color: var(--primary); }

.inline-form { display: inline; }
.mt-1 { margin-top: 1rem; }