:root {
  --bg: #ffffff;
  --ink: #1d2029;
  --muted: #666b76;
  --quiet: #8b9099;
  --panel: #f6f6f2;
  --panel-warm: #f7f2eb;
  --line: #e4e5e1;
  --line-strong: #cfd2cc;
  --primary: #1d2029;
  --primary-ink: #ffffff;
  --danger: #c84337;
  --accent: #d9f36b;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 18px 42px rgba(29, 32, 41, 0.08);
}

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter Display", Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.35;
}

.aurora {
  display: none;
}

.shell {
  width: min(1180px, calc(100% - 80px));
  margin: 0 auto;
  padding: 0 0 4rem;
}

.hero {
  display: grid;
  align-content: end;
  min-height: 330px;
  padding: 6rem 0 2.25rem;
}

.kicker,
.label {
  margin: 0 0 0.25rem;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1,
h2,
h3 {
  color: var(--ink);
  font-family: inherit;
  font-weight: 720;
  line-height: 1.05;
}

h1 {
  max-width: 12ch;
  font-size: 4.15rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.28rem;
}

.lede {
  max-width: 54ch;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.layout-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 10px;
}

.panel,
.dashboard-summary,
.console-section,
.student-row,
.analytics-chip,
.voice-batch,
.voice-audio-card,
.notes {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.panel {
  padding: 1.05rem;
}

.panel:nth-child(2) {
  background: var(--panel-warm);
}

.panel-head {
  margin-bottom: 1rem;
}

.dashboard-summary {
  display: grid;
  gap: 0.7rem;
  margin-bottom: 1rem;
  padding: 1rem;
  background: #ffffff;
}

.dashboard-summary-head {
  margin-bottom: 0;
}

.teacher-console-clusters {
  display: grid;
  gap: 1rem;
}

.console-cluster {
  display: grid;
  gap: 0.7rem;
}

.console-cluster-head {
  display: grid;
  gap: 0.2rem;
}

.teacher-console-sections {
  display: grid;
  gap: 10px;
}

.console-section {
  overflow: hidden;
  background: #ffffff;
}

.console-section[open] {
  box-shadow: var(--shadow);
}

.console-section-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem;
  cursor: pointer;
  list-style: none;
}

.console-section-summary::-webkit-details-marker {
  display: none;
}

.console-section-summary::after {
  content: "+";
  flex: 0 0 auto;
  color: var(--ink);
  font-size: 1.7rem;
  font-weight: 400;
  line-height: 1;
}

.console-section[open] .console-section-summary::after {
  content: "-";
}

.console-section-title {
  font-size: 1.08rem;
  font-weight: 720;
  line-height: 1.1;
}

.console-section-body {
  display: grid;
  gap: 0.85rem;
  padding: 0 1rem 1rem;
}

.console-section-body > :first-child {
  margin-top: 0;
}

.stack {
  display: grid;
  gap: 0.75rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

label {
  display: grid;
  gap: 0.36rem;
}

label span {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 560;
}

input,
textarea,
button {
  font: inherit;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: var(--ink);
  padding: 0.68rem 0.78rem;
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus {
  outline: 3px solid color-mix(in srgb, var(--accent) 82%, white);
  outline-offset: 3px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

button {
  min-height: 2.75rem;
  border: 0;
  border-radius: 999px;
  padding: 0.7rem 1rem;
  cursor: pointer;
  font-weight: 650;
  line-height: 1;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

button:hover {
  transform: translateY(-1px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

.primary {
  background: var(--primary);
  color: var(--primary-ink);
}

.secondary {
  background: #eceee8;
  color: var(--ink);
}

.danger {
  background: var(--danger);
  color: #ffffff;
}

.ghost {
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink);
}

a {
  color: var(--ink);
  font-weight: 650;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.notes {
  margin-top: 0.68rem;
  padding: 0.72rem 0.78rem;
  color: var(--ink);
  font-size: 0.92rem;
}

.micro {
  color: var(--muted);
  font-size: 0.84rem;
}

.list {
  display: grid;
  gap: 0.6rem;
  margin-top: 0.6rem;
}

.list.empty {
  color: var(--muted);
}

.student-row {
  display: grid;
  gap: 0.22rem;
  padding: 0.72rem;
  background: #ffffff;
}

.student-row p {
  margin: 0;
}

.mode-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1rem 0 0.65rem;
}

.tab {
  background: #eceee8;
  color: var(--ink);
}

.tab.active {
  background: var(--ink);
  color: #ffffff;
}

.mode-view {
  display: grid;
  gap: 0.72rem;
}

.mode-view.hidden {
  display: none;
}

.learning-card {
  min-height: 160px;
  display: grid;
  align-content: center;
  gap: 0.48rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  padding: 1rem;
}

.learning-card.empty {
  color: var(--muted);
}

.learning-card p {
  margin: 0;
}

.learning-card .french {
  font-size: 2.1rem;
  font-weight: 760;
  line-height: 1.05;
}

.learning-card .english {
  color: var(--muted);
  font-size: 1.05rem;
}

.learning-card .emoji {
  font-size: 1.45rem;
  line-height: 1;
}

.learning-card .card-image {
  width: min(260px, 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin: 0.25rem 0;
}

.blend-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.blend-chip {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  padding: 0.48rem;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 650;
}

.toast {
  position: fixed;
  right: 0.8rem;
  bottom: 0.8rem;
  max-width: min(28rem, calc(100vw - 1.6rem));
  border-radius: var(--radius-sm);
  background: var(--ink);
  color: #ffffff;
  padding: 0.62rem 0.8rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.analytics-grid {
  display: grid;
  gap: 0.45rem;
}

.analytics-chip {
  background: #ffffff;
  padding: 0.42rem 0.55rem;
  font-size: 0.87rem;
}

.analytics-list {
  display: grid;
  gap: 0.38rem;
  margin-top: 0.45rem;
}

.analytics-item {
  border-top: 1px solid var(--line);
  padding-top: 0.38rem;
  font-size: 0.84rem;
}

.voice-lab-list {
  display: grid;
  gap: 0.75rem;
  margin-top: 0.7rem;
}

.voice-lab-list.empty {
  color: var(--muted);
}

.voice-batch,
.voice-audio-card {
  display: grid;
  gap: 0.65rem;
  padding: 0.85rem;
  background: #ffffff;
}

.voice-batch-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 0.75rem;
}

.voice-batch-head p,
.voice-audio-card p {
  margin: 0;
}

.voice-batch-meta {
  color: var(--muted);
  font-size: 0.84rem;
}

.voice-batch-items {
  display: grid;
  gap: 0.55rem;
}

.voice-audio-card audio {
  width: 100%;
}

.voice-lab-statline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.45rem;
}

.voice-lab-pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #ffffff;
  padding: 0.3rem 0.6rem;
  font-size: 0.8rem;
}

@media (max-width: 1000px) {
  .shell {
    width: min(100% - 40px, 880px);
  }

  .hero {
    min-height: 260px;
    padding-top: 4rem;
  }

  .layout-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .blend-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 460px) {
  .shell {
    width: calc(100% - 20px);
  }

  h1 {
    font-size: 2.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}