/* Docente Studio Pro — shell premium (Sprint D1) */
@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,650;9..144,700&family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&display=swap");

:root {
  --ds-bg: #070b14;
  --ds-bg2: #0e1626;
  --ds-panel: rgba(16, 24, 40, 0.88);
  --ds-line: rgba(255, 255, 255, 0.1);
  --ds-text: #f4f7fb;
  --ds-muted: #93a0b8;
  --ds-accent: #c8f542;
  --ds-accent-ink: #0a1524;
  --ds-cyan: #3dd6f5;
  --ds-danger: #ff6b7a;
  --ds-ok: #5ee4a8;
  --ds-radius: 18px;
  --ds-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  --ds-font: "DM Sans", system-ui, sans-serif;
  --ds-display: "Fraunces", Georgia, serif;
}

html[data-theme="light"] {
  --ds-bg: #f3f1ea;
  --ds-bg2: #fffdf8;
  --ds-panel: rgba(255, 253, 248, 0.92);
  --ds-line: rgba(18, 28, 45, 0.12);
  --ds-text: #121c2d;
  --ds-muted: #5b677c;
  --ds-accent: #9ecc20;
  --ds-accent-ink: #0a1524;
  --ds-shadow: 0 18px 40px rgba(18, 28, 45, 0.12);
}

body.ds-pro #appView.app {
  background:
    radial-gradient(900px 480px at 12% -10%, rgba(200, 245, 66, 0.1), transparent 55%),
    radial-gradient(800px 420px at 90% 0%, rgba(61, 214, 245, 0.1), transparent 50%),
    var(--ds-bg);
  color: var(--ds-text);
  font-family: var(--ds-font);
}

body.ds-pro .side {
  background: linear-gradient(180deg, rgba(12, 18, 32, 0.96), rgba(8, 12, 22, 0.98));
  border-right: 1px solid var(--ds-line);
  backdrop-filter: blur(16px);
}

html[data-theme="light"] body.ds-pro .side {
  background: linear-gradient(180deg, #fffdf8, #f7f3ea);
}

body.ds-pro .side__brand strong {
  font-family: var(--ds-display);
  font-weight: 650;
  letter-spacing: -0.02em;
  font-size: 1.05rem;
}

body.ds-pro .side__nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 10px 18px;
}

body.ds-pro .side__nav button {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  text-align: left;
  border: 1px solid transparent;
  background: transparent;
  color: var(--ds-muted);
  border-radius: 12px;
  padding: 11px 12px;
  font: 600 13.5px/1.2 var(--ds-font);
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.15s;
}

body.ds-pro .side__nav button:hover {
  color: var(--ds-text);
  background: rgba(255, 255, 255, 0.04);
}

body.ds-pro .side__nav button.is-on {
  color: var(--ds-accent-ink);
  background: var(--ds-accent);
  border-color: transparent;
  box-shadow: 0 8px 24px rgba(200, 245, 66, 0.22);
}

body.ds-pro .side__nav .nav-ico {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  opacity: 0.9;
}

body.ds-pro .side__nav .nav-group {
  margin: 14px 12px 6px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ds-muted);
}

body.ds-pro .main {
  padding: 22px 22px 48px;
}

/* Studio surfaces */
.ds-wrap {
  max-width: 1120px;
  margin: 0 auto;
  animation: dsIn 0.35s ease both;
}

@keyframes dsIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .ds-wrap { animation: none; }
}

.ds-hero {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}

.ds-kicker {
  margin: 0 0 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ds-cyan);
}

.ds-title {
  margin: 0;
  font-family: var(--ds-display);
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.ds-lede {
  margin: 8px 0 0;
  max-width: 42rem;
  color: var(--ds-muted);
  font-size: 15px;
  line-height: 1.5;
}

.ds-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ds-btn {
  appearance: none;
  border: 1px solid var(--ds-line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--ds-text);
  border-radius: 999px;
  padding: 10px 16px;
  font: 700 13px/1 var(--ds-font);
  cursor: pointer;
  transition: transform 0.15s, background 0.2s, border-color 0.2s;
  min-height: 44px;
}

.ds-btn:hover { transform: translateY(-1px); border-color: rgba(255,255,255,.22); }
.ds-btn:focus-visible { outline: 2px solid var(--ds-accent); outline-offset: 2px; }

.ds-btn--primary {
  background: var(--ds-accent);
  color: var(--ds-accent-ink);
  border-color: transparent;
}

.ds-btn--ghost { background: transparent; }
.ds-btn--danger { color: #fff; background: var(--ds-danger); border-color: transparent; }
.ds-btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }

.ds-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 22px;
}

.ds-stat {
  border: 1px solid var(--ds-line);
  background: var(--ds-panel);
  border-radius: var(--ds-radius);
  padding: 16px 16px 14px;
  box-shadow: var(--ds-shadow);
}

.ds-stat b {
  display: block;
  font-family: var(--ds-display);
  font-size: 1.85rem;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 6px;
}

.ds-stat span {
  color: var(--ds-muted);
  font-size: 12.5px;
  font-weight: 600;
}

.ds-panel {
  border: 1px solid var(--ds-line);
  background: var(--ds-panel);
  border-radius: var(--ds-radius);
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: var(--ds-shadow);
}

.ds-panel h2 {
  margin: 0 0 6px;
  font-family: var(--ds-display);
  font-size: 1.25rem;
  font-weight: 650;
}

.ds-panel .meta {
  margin: 0 0 14px;
  color: var(--ds-muted);
  font-size: 13.5px;
}

.ds-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
}

.ds-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ds-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--ds-line);
  background: rgba(255, 255, 255, 0.02);
}

.ds-item h3 {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 700;
}

.ds-item p {
  margin: 0;
  color: var(--ds-muted);
  font-size: 13px;
  line-height: 1.4;
}

.ds-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid var(--ds-line);
  color: var(--ds-muted);
}

.ds-badge--on {
  background: rgba(200, 245, 66, 0.16);
  color: var(--ds-accent);
  border-color: rgba(200, 245, 66, 0.35);
}

.ds-form {
  display: grid;
  gap: 12px;
}

.ds-form label {
  display: grid;
  gap: 6px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--ds-muted);
}

.ds-form input,
.ds-form textarea,
.ds-form select {
  width: 100%;
  border: 1px solid var(--ds-line);
  background: rgba(0, 0, 0, 0.25);
  color: var(--ds-text);
  border-radius: 12px;
  padding: 11px 12px;
  font: 500 14px/1.35 var(--ds-font);
}

html[data-theme="light"] .ds-form input,
html[data-theme="light"] .ds-form textarea,
html[data-theme="light"] .ds-form select {
  background: #fff;
}

.ds-form textarea { min-height: 96px; resize: vertical; }

.ds-split {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 14px;
  min-height: 420px;
}

@media (max-width: 900px) {
  .ds-split { grid-template-columns: 1fr; }
  body.ds-pro .main { padding: 16px 14px 40px; }
}

.ds-tree {
  border: 1px solid var(--ds-line);
  border-radius: var(--ds-radius);
  background: rgba(0, 0, 0, 0.18);
  padding: 10px;
  overflow: auto;
  max-height: min(70vh, 640px);
}

.ds-tree button.tree-node {
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  color: var(--ds-text);
  border-radius: 10px;
  padding: 8px 10px;
  font: 600 13px/1.3 var(--ds-font);
  cursor: pointer;
}

.ds-tree button.tree-node:hover,
.ds-tree button.tree-node.is-on {
  background: rgba(200, 245, 66, 0.12);
}

.ds-tree .tree-cat { padding-left: 12px; color: var(--ds-muted); font-size: 12.5px; }
.ds-tree .tree-lesson { padding-left: 22px; font-weight: 500; font-size: 12.5px; }

.ds-empty {
  text-align: center;
  padding: 36px 18px;
  color: var(--ds-muted);
}

.ds-empty strong {
  display: block;
  color: var(--ds-text);
  font-family: var(--ds-display);
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.ds-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

.ds-table th,
.ds-table td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--ds-line);
}

.ds-table th {
  color: var(--ds-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.ds-q {
  border: 1px solid var(--ds-line);
  border-radius: 14px;
  padding: 12px;
  margin-bottom: 10px;
  background: rgba(255,255,255,0.02);
}

.ds-assets {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}

.ds-asset {
  border: 1px solid var(--ds-line);
  border-radius: 14px;
  padding: 12px;
  background: rgba(0,0,0,0.2);
}

.ds-asset .k {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ds-cyan);
  margin-bottom: 6px;
}

.ds-toast {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 80;
  background: var(--ds-accent);
  color: var(--ds-accent-ink);
  padding: 12px 16px;
  border-radius: 999px;
  font-weight: 700;
  box-shadow: var(--ds-shadow);
  animation: dsIn 0.25s ease both;
}

/* Sprint D5 — editor + vista alumno */
.ds-wrap--wide {
  max-width: 1480px;
}

.ds-edit-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.85fr);
  gap: 16px;
  align-items: start;
  margin-top: 14px;
}

.ds-edit-col {
  min-width: 0;
}

.ds-unit-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.ds-unit-tab {
  border: 1px solid var(--ds-line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--ds-text);
  border-radius: 999px;
  padding: 8px 12px;
  font: 650 12.5px/1 var(--ds-font);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.ds-unit-tab span {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(200, 245, 66, 0.18);
  color: var(--ds-accent);
  font-size: 11px;
}

.ds-unit-tab.is-on {
  background: var(--ds-accent);
  color: var(--ds-accent-ink);
  border-color: transparent;
}

.ds-unit-tab.is-on span {
  background: rgba(10, 21, 36, 0.18);
  color: var(--ds-accent-ink);
}

.ds-preview {
  position: sticky;
  top: 16px;
  border: 1px solid var(--ds-line);
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 40%),
    #0a101c;
  box-shadow: var(--ds-shadow);
  overflow: hidden;
  min-height: 520px;
}

.ds-preview__bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  border-bottom: 1px solid var(--ds-line);
  font: 700 12px/1 var(--ds-font);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ds-muted);
}

.ds-preview__phone {
  max-height: min(72vh, 760px);
  overflow: auto;
  padding: 14px;
  -webkit-overflow-scrolling: touch;
}

.pv-lesson {
  color: #f4f7fb;
  font-family: var(--ds-font);
}

.pv-head h2 {
  margin: 4px 0 8px;
  font: 650 1.35rem/1.2 var(--ds-display);
  letter-spacing: -0.02em;
}

.pv-kicker {
  margin: 0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #93a0b8;
}

.pv-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 12px 0 16px;
  position: sticky;
  top: 0;
  z-index: 2;
  padding: 8px 0;
  background: linear-gradient(180deg, #0a101c 70%, transparent);
}

.pv-pill {
  text-decoration: none;
  color: #0a1524;
  background: #c8f542;
  border-radius: 999px;
  padding: 7px 10px;
  font: 700 11px/1 var(--ds-font);
}

.pv-unit {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 14px;
  margin-bottom: 12px;
  background: rgba(255, 255, 255, 0.03);
}

.pv-unit h3 {
  margin: 4px 0 8px;
  font-size: 1.05rem;
}

.pv-sum,
.pv-body,
.pv-muted {
  color: #93a0b8;
  font-size: 13px;
  line-height: 1.45;
}

.pv-media {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.pv-quiz {
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(200, 245, 66, 0.1);
  border: 1px solid rgba(200, 245, 66, 0.25);
  font-size: 13px;
}

.ds-video {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
  background: #000;
  margin-bottom: 8px;
}

.ds-video iframe,
.ds-video video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.ds-video--canva {
  aspect-ratio: 16 / 10;
}

.ds-media img {
  width: 100%;
  border-radius: 12px;
  display: block;
}

.ds-chip-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--ds-line);
  color: var(--ds-text);
  text-decoration: none;
  font-size: 12.5px;
  font-weight: 650;
}

@media (max-width: 1100px) {
  .ds-edit-grid {
    grid-template-columns: 1fr;
  }
  .ds-preview {
    position: relative;
    top: 0;
  }
}

.ds-badgerow {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.ds-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 8px 0 10px;
}

.ds-attach-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.ds-taskbox {
  margin: 12px 0;
  padding: 14px;
  border-radius: 16px;
  border: 1px solid rgba(200, 245, 66, 0.28);
  background: rgba(200, 245, 66, 0.06);
}

.ds-check {
  display: flex !important;
  align-items: center;
  gap: 10px;
  font-weight: 650;
}

.ds-check input {
  width: auto !important;
}

.ds-q__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.ds-quiz-edit .ds-q {
  background: rgba(255, 255, 255, 0.03);
}

.pv-quizcard {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 18px;
  padding: 16px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
}

.pv-quizcard h3 {
  margin: 4px 0 8px;
  font: 650 1.2rem/1.2 var(--ds-display);
}

.pv-q {
  margin: 12px 0;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.pv-opt,
.pv-consent {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  margin: 8px 0;
  font-size: 13px;
  color: #d5dceb;
}

.pv-input {
  margin-top: 8px;
  padding: 12px;
  border-radius: 10px;
  border: 1px dashed rgba(255, 255, 255, 0.2);
  color: #93a0b8;
  font-size: 13px;
}

.pv-rubric {
  margin: 10px 0;
  padding: 12px;
  border-radius: 12px;
  background: rgba(61, 214, 245, 0.08);
  border: 1px solid rgba(61, 214, 245, 0.22);
  font-size: 13px;
}

.pv-attach {
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(200, 245, 66, 0.1);
  border: 1px solid rgba(200, 245, 66, 0.25);
  font-size: 13px;
}

.pv-task {
  margin-top: 12px;
  padding: 14px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(200, 245, 66, 0.12), rgba(61, 214, 245, 0.08));
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.pv-task h4 {
  margin: 4px 0 8px;
}

@media (max-width: 860px) {
  .ds-attach-grid {
    grid-template-columns: 1fr;
  }
}