/* Tạo giáo án — slide builder on MathFilm shell */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.curriculum-create-page {
  --font-display: "Outfit", "Manrope", "Segoe UI", system-ui, sans-serif;
  font-family: var(--font-display);
}

.curriculum-create-page .curriculum-viewport {
  min-height: 0;
  height: 100dvh;
  max-height: 100dvh;
  overflow: hidden;
  box-sizing: border-box;
  background: transparent;
}

.curriculum-create-page .curriculum-layout {
  height: 100%;
  min-height: 0;
  display: flex;
  flex-direction: column;
  padding-top: 0;
  border-radius: 14px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(37, 99, 235, 0.12);
  box-shadow: 0 10px 28px rgba(15, 35, 60, 0.08);
}

.curriculum-create-page .curriculum-bar {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 36px;
  padding: 4px 12px;
  background: #fff;
  border-bottom: 1px solid var(--line, #d4e4f8);
  margin-top: 0;
}

.curriculum-create-page .curriculum-title-wrap {
  flex: 1;
  min-width: 0;
  max-width: 360px;
}

.curriculum-create-page .curriculum-title {
  width: 100%;
  border: 1px solid transparent;
  background: transparent;
  font: inherit;
  font-size: 16px;
  font-weight: 650;
  color: var(--navy, #0f2942);
  padding: 4px 8px;
  border-radius: 8px;
}

.curriculum-create-page .curriculum-title:hover,
.curriculum-create-page .curriculum-title:focus {
  background: #fff;
  border-color: var(--line, #d4e4f8);
  outline: none;
}

.curriculum-create-page .curriculum-bar-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.curriculum-create-page .curriculum-mode-pill {
  font-size: var(--type-meta);
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--line, #d4e4f8);
  background: #f1f5f9;
  color: var(--muted, #5a7194);
}

.curriculum-create-page .curriculum-mode-pill[data-mode="published"] {
  background: #ecfdf5;
  border-color: #6ee7b7;
  color: #047857;
}

.curriculum-create-page .curriculum-save-status {
  font-size: var(--type-meta);
  color: var(--muted, #5a7194);
  min-width: 0;
}

.curriculum-create-page .curr-btn {
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  border-radius: 8px;
  padding: 5px 11px;
  border: 1px solid var(--line, #d4e4f8);
  background: #fff;
  color: var(--text, #1e3a5f);
  cursor: pointer;
  transition: background .12s, border-color .12s, opacity .12s;
}

.curriculum-create-page .curr-btn:hover:not(:disabled) {
  background: #f3f8ff;
  border-color: #b8d0f0;
}

.curriculum-create-page .curr-btn:disabled {
  opacity: .45;
  cursor: not-allowed;
}

.curriculum-create-page .curr-btn--primary {
  background: var(--blue-gradient-btn, linear-gradient(180deg, #4d9bff 0%, #2563eb 100%));
  border-color: #1d4ed8;
  color: #fff;
}

.curriculum-create-page .curr-btn--primary:hover:not(:disabled) {
  filter: brightness(1.05);
  background: var(--blue-gradient-btn, linear-gradient(180deg, #4d9bff 0%, #2563eb 100%));
}

.curriculum-create-page .curr-btn--ghost {
  background: transparent;
}

.curriculum-create-page .curr-btn--sm {
  padding: 6px 11px;
  font-size: var(--type-meta);
}

.curriculum-create-page .curr-btn--danger {
  color: #b91c1c;
  border-color: #fecaca;
  margin-left: auto;
}

.curriculum-create-page .curr-btn--danger:hover:not(:disabled) {
  background: #fef2f2;
}

/* Main 3-pane — compact proportions */
.curriculum-create-page .curriculum-main {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr) 220px;
  background: transparent;
}

.curriculum-create-page .curr-filmstrip {
  border-right: 1px solid var(--line, #d4e4f8);
  background: rgba(255, 255, 255, 0.72);
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.curriculum-create-page .curr-filmstrip-head {
  padding: 14px 14px 8px;
  font-size: var(--type-meta);
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted, #5a7194);
}

.curriculum-create-page .curr-slides {
  flex: 1;
  overflow: auto;
  padding: 4px 12px 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.curriculum-create-page .curr-slide-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #fff;
  border: 1.5px solid var(--line, #d4e4f8);
  border-radius: 8px;
  cursor: pointer;
  padding: 7px 9px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  text-align: left;
  font: inherit;
  color: inherit;
  box-shadow: 0 4px 12px rgba(15, 35, 60, 0.04);
}

.curriculum-create-page .curr-slide-thumb:hover {
  border-color: #93c5fd;
}

.curriculum-create-page .curr-slide-thumb.is-active {
  border-color: var(--blue, #2563eb);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.18);
}

.curriculum-create-page .curr-slide-thumb .n {
  font-size: var(--type-meta);
  font-weight: 700;
  color: var(--muted, #5a7194);
  font-variant-numeric: tabular-nums;
}

.curriculum-create-page .curr-slide-thumb .label {
  font-size: var(--type-meta);
  font-weight: 650;
  line-height: 1.25;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  color: var(--navy, #0f2942);
}

.curriculum-create-page .curr-slide-thumb .kind {
  margin-top: auto;
  font-size: var(--type-meta);
  color: var(--muted, #5a7194);
}

.curriculum-create-page .curr-add-slide {
  margin: 0 12px 14px;
  aspect-ratio: 16 / 9;
  border: 1.5px dashed #93c5fd;
  background: rgba(37, 99, 235, 0.04);
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
  font-size: var(--type-meta);
  font-weight: 650;
  color: var(--blue, #2563eb);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.curriculum-create-page .curr-add-slide:hover {
  background: rgba(37, 99, 235, 0.1);
}

/* Stage */
.curriculum-create-page .curr-stage {
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: rgba(226, 236, 248, 0.45);
}

.curriculum-create-page .curr-stage-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line, #d4e4f8);
  background: rgba(255, 255, 255, 0.88);
  flex-wrap: wrap;
}

.curriculum-create-page .curr-stage-hint {
  font-size: var(--type-meta);
  color: var(--muted, #5a7194);
  margin-left: 4px;
}

.curriculum-create-page .curr-stage-canvas {
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
  overflow: auto;
}

.curriculum-create-page .curr-frame {
  width: min(100%, 720px);
  aspect-ratio: 16 / 9;
  background: #fff;
  border: 1px solid #b8d0f0;
  border-radius: 12px;
  box-shadow: var(--shadow, 0 12px 28px rgba(15, 35, 60, 0.08));
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.curriculum-create-page .curr-ratio {
  position: absolute;
  bottom: 8px;
  right: 10px;
  font-size: var(--type-meta);
  font-weight: 700;
  color: var(--muted, #5a7194);
  background: rgba(255, 255, 255, 0.9);
  padding: 2px 7px;
  border-radius: 6px;
  border: 1px solid var(--line, #d4e4f8);
  z-index: 2;
}

.curriculum-create-page .curr-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 24px;
  text-align: center;
}

.curriculum-create-page .curr-empty h2 {
  margin: 0;
  font-size: var(--type-body);
  font-weight: 700;
  color: var(--navy, #0f2942);
}

.curriculum-create-page .curr-empty p {
  margin: 0;
  font-size: var(--type-meta);
  color: var(--muted, #5a7194);
  max-width: 340px;
  line-height: 1.45;
}

.curriculum-create-page .curr-filled {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: 20px 24px;
}

.curriculum-create-page .curr-chip {
  display: inline-flex;
  align-items: center;
  font-size: var(--type-meta);
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--blue, #2563eb);
  background: #eff6ff;
  padding: 4px 9px;
  border-radius: 999px;
  width: fit-content;
}

.curriculum-create-page .curr-block-title {
  margin: 10px 0 6px;
  font-size: var(--type-title);
  font-weight: 750;
  letter-spacing: -.02em;
  color: var(--navy, #0f2942);
}

.curriculum-create-page .curr-block-meta {
  margin: 0 0 14px;
  font-size: var(--type-meta);
  color: var(--muted, #5a7194);
  line-height: 1.4;
}

.curriculum-create-page .curr-block-preview {
  flex: 1;
  min-height: 0;
  border: 1px dashed #c5d8f0;
  border-radius: 10px;
  background: #f8fbff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
  overflow: auto;
  text-align: center;
  font-size: var(--type-meta);
  color: var(--muted, #5a7194);
  line-height: 1.4;
}

.curriculum-create-page .curr-block-preview.is-media {
  padding: 0;
  border-style: solid;
  background: #0f172a;
}

.curriculum-create-page .curr-block-preview img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.curriculum-create-page .curr-block-preview .text-body {
  width: 100%;
  height: 100%;
  text-align: left;
  padding: 16px 18px;
  font-size: var(--type-meta);
  color: var(--text, #1e3a5f);
  white-space: pre-wrap;
  overflow: auto;
}

.curriculum-create-page .curr-block-preview .math-body {
  font-size: var(--type-title);
  font-weight: 700;
  color: var(--navy, #0f2942);
  font-family: "Times New Roman", Georgia, serif;
}

.curriculum-create-page .curr-ai-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
  max-width: 360px;
}

.curriculum-create-page .curr-ai-card a {
  color: var(--blue, #2563eb);
  font-weight: 650;
  text-decoration: none;
}

.curriculum-create-page .curr-ai-card a:hover {
  text-decoration: underline;
}

/* Inspector */
.curriculum-create-page .curr-inspector {
  border-left: 1px solid var(--line, #d4e4f8);
  background: rgba(255, 255, 255, 0.88);
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.curriculum-create-page .curr-inspector-head {
  padding: 14px 16px 10px;
  border-bottom: 1px solid var(--line, #d4e4f8);
}

.curriculum-create-page .curr-inspector-head h2 {
  margin: 0;
  font-size: var(--type-meta);
  font-weight: 700;
  color: var(--navy, #0f2942);
}

.curriculum-create-page .curr-inspector-head p {
  margin: 4px 0 0;
  font-size: var(--type-meta);
  color: var(--muted, #5a7194);
  line-height: 1.35;
}

.curriculum-create-page .curr-inspector-body {
  flex: 1;
  overflow: auto;
  padding: 14px 16px;
}

.curriculum-create-page .curr-field {
  margin-bottom: 12px;
}

.curriculum-create-page .curr-field label,
.curriculum-create-page .curr-field > span.label {
  display: block;
  font-size: var(--type-meta);
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--muted, #5a7194);
  margin-bottom: 5px;
}

.curriculum-create-page .curr-field .val {
  font-size: var(--type-meta);
  color: var(--text, #1e3a5f);
  word-break: break-word;
}

.curriculum-create-page .curr-inspector-actions {
  padding: 12px 16px;
  border-top: 1px solid var(--line, #d4e4f8);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Modal */
.curriculum-create-page .curr-overlay {
  position: fixed;
  inset: 0;
  z-index: 800;
  background: rgba(15, 41, 66, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.curriculum-create-page .curr-overlay[hidden] {
  display: none !important;
}

.curriculum-create-page .curr-modal {
  background: #fff;
  border: 1px solid var(--line, #d4e4f8);
  border-radius: 16px;
  width: min(640px, 100%);
  max-height: min(90vh, 720px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow-2, 0 18px 40px rgba(15, 35, 60, 0.12));
}

.curriculum-create-page .curr-modal--wide {
  width: min(720px, 100%);
}

.curriculum-create-page .curr-modal-head {
  padding: 16px 20px;
  border-bottom: 1px solid var(--line, #d4e4f8);
  display: flex;
  align-items: center;
  gap: 12px;
}

.curriculum-create-page .curr-modal-head h3 {
  margin: 0;
  flex: 1;
  font-size: var(--type-meta);
  font-weight: 700;
  color: var(--navy, #0f2942);
}

.curriculum-create-page .curr-modal-close {
  border: none;
  background: transparent;
  font-size: var(--type-title);
  line-height: 1;
  cursor: pointer;
  color: var(--muted, #5a7194);
  padding: 4px;
}

.curriculum-create-page .curr-modal-body {
  padding: 16px 20px 20px;
  overflow: auto;
}

.curriculum-create-page .curr-modal-foot {
  padding: 12px 20px;
  border-top: 1px solid var(--line, #d4e4f8);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.curriculum-create-page .curr-feat-section {
  margin: 16px 0 8px;
  font-size: var(--type-meta);
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted, #5a7194);
}

.curriculum-create-page .curr-feat-section:first-child {
  margin-top: 0;
}

.curriculum-create-page .curr-feat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.curriculum-create-page .curr-feat-card {
  text-align: left;
  border: 1px solid var(--line, #d4e4f8);
  background: #f8fbff;
  border-radius: 12px;
  padding: 12px 14px;
  cursor: pointer;
  font: inherit;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.curriculum-create-page .curr-feat-card:hover {
  border-color: var(--blue, #2563eb);
  background: #eff6ff;
}

.curriculum-create-page .curr-feat-group {
  font-size: var(--type-meta);
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--blue, #2563eb);
}

.curriculum-create-page .curr-feat-card strong {
  font-size: var(--type-meta);
  font-weight: 700;
  color: var(--navy, #0f2942);
}

.curriculum-create-page .curr-feat-card span:last-child {
  font-size: var(--type-meta);
  color: var(--muted, #5a7194);
  line-height: 1.35;
}

.curriculum-create-page .curr-cfg-title {
  margin: 0 0 4px;
  font-size: var(--type-meta);
  font-weight: 700;
}

.curriculum-create-page .curr-cfg-sub {
  margin: 0 0 16px;
  font-size: var(--type-meta);
  color: var(--muted, #5a7194);
}

.curriculum-create-page .curr-cfg-field {
  margin-bottom: 14px;
}

.curriculum-create-page .curr-cfg-field label {
  display: block;
  font-size: var(--type-meta);
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--muted, #5a7194);
  margin-bottom: 6px;
}

.curriculum-create-page .curr-cfg-field input,
.curriculum-create-page .curr-cfg-field select,
.curriculum-create-page .curr-cfg-field textarea {
  width: 100%;
  font: inherit;
  font-size: var(--type-meta);
  padding: 10px 12px;
  border: 1px solid var(--line, #d4e4f8);
  border-radius: 10px;
  background: #f8fbff;
  color: var(--text, #1e3a5f);
  box-sizing: border-box;
}

.curriculum-create-page .curr-cfg-field textarea {
  min-height: 88px;
  resize: vertical;
}

.curriculum-create-page .curr-cfg-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.curriculum-create-page .curr-cfg-note {
  margin-top: 8px;
  padding: 10px 12px;
  background: #f1f5f9;
  border: 1px dashed #cbd5e1;
  border-radius: 10px;
  font-size: var(--type-meta);
  color: var(--muted, #5a7194);
  line-height: 1.4;
}

.curriculum-create-page .curr-upload-zone {
  border: 1.5px dashed #93c5fd;
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  background: #f8fbff;
  cursor: pointer;
}

.curriculum-create-page .curr-upload-zone:hover,
.curriculum-create-page .curr-upload-zone.is-drag {
  background: #eff6ff;
  border-color: var(--blue, #2563eb);
}

.curriculum-create-page .curr-upload-zone strong {
  display: block;
  font-size: var(--type-meta);
  margin-bottom: 4px;
  color: var(--navy, #0f2942);
}

.curriculum-create-page .curr-upload-zone span {
  font-size: var(--type-meta);
  color: var(--muted, #5a7194);
}

.curriculum-create-page .curr-upload-preview {
  margin-top: 12px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--line, #d4e4f8);
  max-height: 180px;
  display: none;
}

.curriculum-create-page .curr-upload-preview.is-on {
  display: block;
}

.curriculum-create-page .curr-upload-preview img {
  display: block;
  width: 100%;
  max-height: 180px;
  object-fit: contain;
  background: #0f172a;
}

.curriculum-create-page .curr-upload-status {
  margin-top: 8px;
  font-size: var(--type-meta);
  color: var(--muted, #5a7194);
}

html[data-theme="dark"] .curriculum-create-page .curriculum-viewport {
  background:
    radial-gradient(circle at 12% 8%, rgba(91, 157, 255, 0.12) 0 90px, transparent 92px),
    linear-gradient(180deg, #0c1628 0%, #0f1d34 50%, #0a1220 100%);
}

html[data-theme="dark"] .curriculum-create-page .curriculum-bar,
html[data-theme="dark"] .curriculum-create-page .curr-filmstrip,
html[data-theme="dark"] .curriculum-create-page .curr-inspector,
html[data-theme="dark"] .curriculum-create-page .curr-stage-toolbar,
html[data-theme="dark"] .curriculum-create-page .curr-modal {
  background: rgba(15, 26, 46, 0.94);
  border-color: var(--line);
}

html[data-theme="dark"] .curriculum-create-page .curr-frame,
html[data-theme="dark"] .curriculum-create-page .curr-slide-thumb {
  background: #141f33;
  border-color: rgba(147, 197, 253, 0.28);
  color: #f0f6ff;
}

html[data-theme="dark"] .curriculum-create-page .curr-btn {
  background: linear-gradient(180deg, rgba(42, 62, 98, 0.95), rgba(22, 36, 60, 0.98));
  border-color: rgba(147, 197, 253, 0.35);
  color: #f0f6ff;
  -webkit-text-fill-color: #f0f6ff;
}

html[data-theme="dark"] .curriculum-create-page .curr-btn--primary {
  background: linear-gradient(135deg, #2f6bff 0%, #3d7aff 48%, #ff7a3d 100%);
  border-color: rgba(255, 255, 255, 0.2);
  color: #fff;
  -webkit-text-fill-color: #fff;
}

html[data-theme="dark"] .curriculum-create-page .curr-btn--ghost {
  background: linear-gradient(180deg, rgba(42, 62, 98, 0.95), rgba(22, 36, 60, 0.98));
  color: #f0f6ff;
  -webkit-text-fill-color: #f0f6ff;
  border-color: rgba(147, 197, 253, 0.42);
}

html[data-theme="dark"] .curriculum-create-page .curr-filled,
html[data-theme="dark"] .curriculum-create-page .curr-block-preview {
  background: #0f1a2e;
}

html[data-theme="dark"] .curriculum-create-page .curr-feat-card,
html[data-theme="dark"] .curriculum-create-page .curr-cfg-field input,
html[data-theme="dark"] .curriculum-create-page .curr-cfg-field select,
html[data-theme="dark"] .curriculum-create-page .curr-cfg-field textarea,
html[data-theme="dark"] .curriculum-create-page .curr-upload-zone {
  background: #152238;
  border-color: var(--line);
  color: var(--text);
}

@media (max-width: 960px) {
  .curriculum-create-page .curriculum-main {
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(280px, 1fr) auto;
    overflow: auto;
  }

  .curriculum-create-page .curr-filmstrip {
    max-height: 150px;
    border-right: none;
    border-bottom: 1px solid var(--line, #d4e4f8);
  }

  .curriculum-create-page .curr-slides {
    flex-direction: row;
    overflow-x: auto;
  }

  .curriculum-create-page .curr-slide-thumb,
  .curriculum-create-page .curr-add-slide {
    width: 140px;
    flex-shrink: 0;
  }

  .curriculum-create-page .curr-inspector {
    border-left: none;
    border-top: 1px solid var(--line, #d4e4f8);
    max-height: 220px;
  }

  .curriculum-create-page .curr-feat-grid,
  .curriculum-create-page .curr-cfg-row {
    grid-template-columns: 1fr;
  }
}