@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
  --ink: #0f172a;
  --ink-soft: #1e3a5f;
  --slate: #475569;
  --slate-soft: #94a3b8;
  --paper: #f8fafc;
  --card: #ffffff;
  --border: #e2e8f0;
  --gold: #fdbe33;
  --gold-dark: #af7520;
  --gold-light: #fff8e7;
  --success-bg: #f0fdf4;
  --success-text: #15803d;
  --success-border: #bbf7d0;
  --danger-bg: #fff5f5;
  --danger-text: #b91c1c;
  --danger-border: #fed7d7;
  --neutral-bg: #f1f5f9;
  --neutral-text: #475569;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(15, 23, 42, .08);
  --shadow-lg: 0 24px 64px rgba(15, 23, 42, .16);
  --surface: var(--paper);
  --on-surface: var(--ink);
  --index-accent: var(--gold-dark);
  --warn-text: var(--ink-soft);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --surface: #0f172a;
    --on-surface: #f1f5f9;
    --card: #14213b;
    --border: #263a5c;
    --slate: #b7c3d6;
    --slate-soft: #8595ae;
    --paper: #0f172a;
    --gold-light: rgba(253, 190, 51, .14);
    --success-bg: rgba(21, 128, 61, .16);
    --danger-bg: rgba(185, 28, 28, .16);
    --neutral-bg: rgba(148, 163, 184, .14);
    --index-accent: var(--gold);
    --warn-text: #f1f5f9;
  }
}
:root[data-theme="dark"] {
  --surface: #0f172a;
  --on-surface: #f1f5f9;
  --card: #14213b;
  --border: #263a5c;
  --slate: #b7c3d6;
  --slate-soft: #8595ae;
  --paper: #0f172a;
  --gold-light: rgba(253, 190, 51, .14);
  --success-bg: rgba(21, 128, 61, .16);
  --danger-bg: rgba(185, 28, 28, .16);
  --neutral-bg: rgba(148, 163, 184, .14);
  --index-accent: var(--gold);
  --warn-text: #f1f5f9;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--surface);
  color: var(--on-surface);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--gold-dark); text-decoration: none; font-weight: 600; }
a:hover { text-decoration: underline; }
h1, h2, h3 { letter-spacing: -.01em; text-wrap: balance; }

/* ── badges / tags (from the course landing page) ───────────── */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--gold);
  border-radius: 100px;
  padding: 5px 14px;
}

/* ── topbar ───────────────────────────────────────────────── */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.topbar strong { font-weight: 700; }
.topbar a { color: var(--slate); font-weight: 600; }
.topbar a:hover { color: var(--gold-dark); }

.dashboard, .admin-main {
  max-width: 940px;
  margin: 0 auto;
  padding: 28px 20px 60px;
}

/* ── auth screens: always the brand "hero" surface ───────────── */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
  position: relative;
  overflow: hidden;
}
.auth-page::before {
  content: '';
  position: absolute;
  width: 560px; height: 560px;
  background: radial-gradient(circle, rgba(37,99,235,.25) 0%, transparent 70%);
  top: -140px; right: -100px;
  pointer-events: none;
}

.auth-card {
  position: relative;
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 38px 34px;
  max-width: 380px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  color: var(--ink);
}
.auth-card h1 { margin: 0 0 6px; font-size: 22px; font-weight: 800; }
.subtitle, .footnote { color: var(--slate); font-size: 13.5px; }
.subtitle { margin-bottom: 22px; }
.footnote { margin-top: 22px; text-align: center; }

form label {
  display: block;
  margin: 14px 0 6px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--slate);
  text-transform: uppercase;
  letter-spacing: .04em;
}
.generate-form label, #reference-image-field label, .format-fieldset label {
  text-transform: none; letter-spacing: normal; font-weight: 500; color: var(--on-surface);
}

input[type="text"], input[type="password"], input[type="email"], input[type="number"], input[type="file"], textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: 9px;
  font-size: 15px;
  font-family: inherit;
  background: var(--paper);
  color: var(--on-surface);
  transition: border-color .15s ease, box-shadow .15s ease;
}
input:focus, textarea:focus {
  outline: none;
  border-color: var(--gold-dark);
  box-shadow: 0 0 0 4px rgba(253, 190, 51, .18);
}
input[type="file"] { padding: 8px 10px; cursor: pointer; }

button {
  margin-top: 18px;
  padding: 12px 22px;
  background: var(--gold);
  color: var(--ink);
  border: none;
  border-radius: 10px;
  font-size: 14.5px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(253, 190, 51, .3);
  transition: background .15s ease, transform .1s ease, box-shadow .15s ease, color .15s ease;
}
button:hover { background: var(--gold-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 8px 24px rgba(253, 190, 51, .38); }
button:active { transform: translateY(0); }
button:disabled { background: var(--border); color: var(--slate-soft); box-shadow: none; cursor: not-allowed; transform: none; }
button:focus-visible { outline: 2px solid var(--gold-dark); outline-offset: 2px; }

.error, .form-error, .gallery-error { color: var(--danger-text); font-size: 13.5px; }
.form-error:not([hidden]) { margin-top: 10px; padding: 8px 12px; background: var(--danger-bg); border-radius: 9px; }

.banner {
  padding: 13px 16px;
  border-radius: 10px;
  margin-bottom: 18px;
  font-size: 14px;
  border-left: 3px solid var(--gold-dark);
}
.banner-warn { background: var(--gold-light); color: var(--warn-text); }

/* ── quota tiles ──────────────────────────────────────────── */
.quota-bar {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}
.quota-bar div {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  box-shadow: var(--shadow);
  font-size: 13px;
  color: var(--slate);
}
.quota-bar strong {
  display: block;
  font-size: 32px;
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--on-surface);
  font-variant-numeric: tabular-nums;
  margin: 2px 0 10px;
}
.quota-bar .bar { height: 6px; border-radius: 100px; background: var(--border); overflow: hidden; }
.quota-bar .bar i { display: block; height: 100%; background: var(--gold); border-radius: 100px; }

.generate-form, .pending-panel, .gallery {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.generate-form h2, .pending-panel h2, .gallery h2 { margin: 0 0 16px; font-size: 17px; font-weight: 800; }
.generate-form label { display: inline-block; margin-right: 18px; font-weight: 500; }

.format-fieldset {
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  margin: 14px 0;
  background: var(--paper);
}
.format-fieldset legend { font-size: 12px; font-weight: 700; color: var(--slate); padding: 0 6px; text-transform: uppercase; letter-spacing: .04em; }
#reference-image-field {
  margin: 14px 0;
  padding: 14px 16px;
  border: 1.5px dashed var(--border);
  border-radius: 10px;
  background: var(--paper);
}
#reference-image-field label { display: block; margin: 0 0 10px; font-size: 13px; color: var(--slate); }

/* segmented-control look for the type/format radios, no markup change
   needed — relies on :has(), supported by all current browsers. */
#generate-form > label, .format-fieldset label {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 100px;
  background: var(--paper);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
#generate-form > label:has(input:checked), .format-fieldset label:has(input:checked) {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}
#generate-form > label input, .format-fieldset label input { margin-right: 6px; accent-color: var(--gold); }
#generate-form > label:has(input:disabled) { opacity: .5; cursor: not-allowed; }

.pending-panel { text-align: center; padding: 32px 24px; }
.spinner {
  width: 30px; height: 30px;
  margin: 10px auto 0;
  border: 3px solid var(--border);
  border-top-color: var(--gold);
  border-right-color: var(--gold);
  border-radius: 50%;
  animation: spin .8s cubic-bezier(.5,0,.5,1) infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spinner { animation-duration: 2s; } }

/* ── status pills ─────────────────────────────────────────── */
.status {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .03em;
  padding: 4px 10px; border-radius: 100px;
  border: 1px solid transparent;
}
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; flex: none; }
.status-done { background: var(--success-bg); color: var(--success-text); border-color: var(--success-border); }
.status-progress { background: var(--gold-light); color: var(--gold-dark); border-color: rgba(253,190,51,.4); }
.status-progress .status-dot { animation: pulse 1.1s ease-in-out infinite; }
.status-failed { background: var(--danger-bg); color: var(--danger-text); border-color: var(--danger-border); }
.status-muted { background: var(--neutral-bg); color: var(--neutral-text); }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }
@media (prefers-reduced-motion: reduce) { .status-progress .status-dot { animation: none; } }

/* ── gallery ──────────────────────────────────────────────── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.gallery-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper);
  transition: transform .15s ease, box-shadow .15s ease;
}
.gallery-item:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.gallery-media img, .gallery-media video {
  width: 100%;
  display: block;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--border);
}
.gallery-placeholder {
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  background: linear-gradient(135deg, var(--gold-light) 0%, transparent 60%), var(--paper);
}
.gallery-prompt {
  font-size: 13px;
  margin: 10px 12px 8px;
  color: var(--on-surface);
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.gallery-meta { margin: 0 12px 10px; }
.gallery-error { margin: 0 12px 12px; font-size: 12px; }
.empty-state { color: var(--slate-soft); grid-column: 1 / -1; text-align: center; padding: 20px 0; }

/* ── tables / admin ───────────────────────────────────────── */
table {
  width: 100%; border-collapse: collapse;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
}
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--border); font-size: 13.5px; }
th { background: var(--paper); font-weight: 700; font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--slate); }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--paper); }

.admin-nav { display: flex; gap: 4px; margin-bottom: 22px; font-size: 14px; }
.admin-nav a {
  padding: 8px 16px; border-radius: 100px;
  color: var(--slate); font-weight: 600;
}
.admin-nav a:hover { background: var(--card); color: var(--gold-dark); text-decoration: none; }

.admin-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.admin-card h2 { margin: 0 0 12px; font-size: 16px; font-weight: 800; }

.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin-bottom: 20px; }
.stat-tile { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow); }
.stat-tile .stat-label { font-size: 12px; color: var(--slate); text-transform: uppercase; letter-spacing: .04em; font-weight: 700; margin-bottom: 6px; }
.stat-tile .stat-val { font-size: 26px; font-weight: 900; letter-spacing: -.01em; font-variant-numeric: tabular-nums; }
.stat-tile .stat-val small { font-size: 13px; font-weight: 600; color: var(--slate-soft); }

.credentials-box {
  background: var(--gold-light);
  border: 1px solid rgba(175, 117, 32, .35);
  border-radius: 10px;
  padding: 14px 16px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12.5px;
  white-space: pre-wrap;
  color: var(--ink-soft);
}
.inline-form { display: inline; }
.quota-input { width: 68px; margin-top: 0; }