/* ============================================================
   Carousel Studio — dark editorial theme
   ============================================================ */

:root {
  --bg: #0e0e10;
  --panel: #151517;
  --panel-2: #1b1b1e;
  --border: #2a2a2e;
  --gold: #C9A24B;
  --gold-hi: #D9A94E;
  --text: #F5F3EE;
  --text-muted: #8a8a90;
  --radius: 10px;
  --radius-lg: 12px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

button {
  font-family: inherit;
  cursor: pointer;
}

input, textarea, select {
  font-family: inherit;
  color: var(--text);
}

/* ---------------- Buttons ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.2px;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.1s ease;
  white-space: nowrap;
}

.btn:active { transform: translateY(1px); }

.btn-gold {
  background: var(--gold);
  color: #16130a;
  border-color: var(--gold);
}
.btn-gold:hover { background: var(--gold-hi); border-color: var(--gold-hi); }

.btn-outline-gold {
  background: transparent;
  color: var(--gold);
  border: 1px solid var(--gold);
}
.btn-outline-gold:hover {
  background: rgba(201, 162, 75, 0.1);
  color: var(--gold-hi);
  border-color: var(--gold-hi);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  color: var(--text);
  border-color: var(--gold);
}

.btn-sm { padding: 7px 12px; font-size: 13px; }
.btn-block { width: 100%; }

/* ---------------- Inputs ---------------- */

input[type="text"],
input[type="password"],
textarea,
select.select-input {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input[type="text"]:focus,
input[type="password"]:focus,
textarea:focus,
select.select-input:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(201, 162, 75, 0.15);
}

textarea { resize: vertical; line-height: 1.5; }

/* ---------------- Top bar ---------------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.topbar .brand {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

/* ---------------- Stepper ---------------- */

.stepper {
  display: flex;
  gap: 4px;
  padding: 0 32px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  overflow-x: auto;
}

.step-tab {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  padding: 16px 18px;
  font-size: 14px;
  font-weight: 600;
  transition: color 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}

.step-tab:hover { color: var(--text); }

.step-tab.active {
  color: var(--gold-hi);
  border-bottom-color: var(--gold);
}

/* ---------------- Main layout ---------------- */

.main-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}

.panel h2 {
  font-size: 22px;
  margin: 0 0 4px;
}

.panel-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 20px;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.hint-text {
  color: var(--text-muted);
  font-size: 13px;
  margin: -8px 0 18px;
}

/* ---------------- Segmented control ---------------- */

.segmented {
  display: inline-flex;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3px;
  gap: 2px;
}

.seg-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 7px 14px;
  border-radius: 7px;
  font-size: 13px;
  font-weight: 600;
  transition: background 0.15s ease, color 0.15s ease;
}

.seg-btn.active {
  background: var(--gold);
  color: #16130a;
}

/* ---------------- Loading / spinner ---------------- */

.loading-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 0;
  color: var(--text-muted);
  font-size: 14px;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2.5px solid rgba(201, 162, 75, 0.25);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

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

/* ---------------- Banner (errors / notices) ---------------- */

.banner {
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-bottom: 20px;
  font-size: 14px;
  color: var(--text);
}

.banner.error { border-left-color: #c0554a; }

/* ---------------- Empty state ---------------- */

.empty-state {
  background: var(--panel);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 24px;
  text-align: center;
  color: var(--text-muted);
}

.empty-state p { margin: 0 0 14px; }

/* ---------------- Topic cards ---------------- */

.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin-bottom: 22px;
}

.topic-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.topic-card:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.topic-chip {
  display: inline-block;
  align-self: flex-start;
  background: rgba(201, 162, 75, 0.14);
  color: var(--gold-hi);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
}

.topic-title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
}

.topic-why {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.topic-book {
  font-size: 12.5px;
  font-style: italic;
  color: var(--text-muted);
}

.custom-topic-row {
  display: flex;
  gap: 10px;
}

.custom-topic-row input {
  flex: 1;
}

/* ---------------- Script panel ---------------- */

.meta-fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.meta-fields label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12.5px;
  color: var(--text-muted);
  font-weight: 600;
}

.slides-editor {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.slide-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
}

.slide-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.slide-card-head h4 {
  margin: 0;
  font-size: 14px;
  color: var(--gold-hi);
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.slide-card label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
  margin: 10px 0 4px;
}

.slide-card textarea {
  width: 100%;
}

.caption-block {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.caption-block label {
  font-size: 12.5px;
  color: var(--text-muted);
  font-weight: 600;
}

.caption-block textarea { width: 100%; }

/* ---------------- Photos panel ---------------- */

.section-subhead {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
  margin: 26px 0 12px;
}

.photo-queries {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.photo-query-row {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px;
}

.photo-query-row-top {
  display: flex;
  gap: 10px;
}

.photo-query-row-top input {
  flex: 1;
}

.photo-results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  gap: 8px;
  margin-top: 12px;
}

.photo-results-grid img {
  width: 100%;
  height: 90px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.photo-results-grid img:hover {
  border-color: var(--gold);
  transform: scale(1.03);
}

.upload-row {
  display: flex;
  align-items: stretch;
  gap: 14px;
  flex-wrap: wrap;
}

.drop-zone {
  flex: 1;
  min-width: 220px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.drop-zone.drag-over {
  border-color: var(--gold);
  background: rgba(201, 162, 75, 0.06);
}

#fileInput { align-self: center; }

.selected-tray {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  gap: 10px;
}

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

.selected-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.selected-thumb .remove-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(10, 10, 11, 0.75);
  color: #fff;
  border: none;
  font-size: 12px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slide-assign {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.slide-assign-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.slide-assign-row label {
  width: 70px;
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
}

.slide-assign-row select {
  flex: 1;
  max-width: 280px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 12px;
}

/* ---------------- Preview / canvases ---------------- */

.canvases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 28px;
}

.canvas-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.canvas-card canvas {
  width: 360px;
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  border: 1px solid var(--border);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
  display: block;
}

.canvas-card input[type="range"] {
  width: 100%;
  accent-color: var(--gold);
}

.canvas-card .canvas-label {
  font-size: 12.5px;
  color: var(--text-muted);
  font-weight: 600;
  align-self: flex-start;
}

/* ---------------- Login overlay ---------------- */

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 1;
  transition: opacity 0.2s ease;
}

.overlay.hidden {
  display: none;
}

.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  width: 320px;
  max-width: 90vw;
  text-align: center;
  box-shadow: var(--shadow);
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.login-brand {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.login-brand span { color: var(--gold); }

.login-sub {
  color: var(--text-muted);
  font-size: 13px;
  margin: 0 0 20px;
}

.login-card input {
  width: 100%;
  margin-bottom: 14px;
}

.login-error {
  color: #e0736a;
  font-size: 13px;
  min-height: 16px;
  margin: 10px 0 0;
}

/* ---------------- Toast ---------------- */

.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--panel-2, #1b1b1e);
  border: 1px solid var(--gold);
  color: var(--text);
  border-radius: 999px;
  padding: 10px 24px;
  font-size: 13.5px;
  font-weight: 600;
  z-index: 300;
  max-width: 80vw;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  animation: fadeIn 0.15s ease-out;
}

/* ---------------- Responsive ---------------- */

@media (max-width: 720px) {
  .topbar { padding: 14px 18px; }
  .stepper { padding: 0 18px; }
  .main-wrap { padding: 22px 14px 60px; }
  .panel-header-row { flex-direction: column; align-items: flex-start; }
  .custom-topic-row { flex-direction: column; }
}