:root {
  --paper: #f3efe6;
  --paper-quiet: #ebe5d8;
  --sheet: #fffdf7;
  --sheet-raised: #fffaf0;
  --ink: #1f1b14;
  --text: #3d372e;
  --text-soft: #71695c;
  --text-faint: #aaa295;
  --garden: #1f7a58;
  --garden-dark: #10513b;
  --garden-wash: #e6f1e9;
  --clay: #aa5947;
  --gold: #d8aa45;
  --line-soft: rgba(31, 27, 20, 0.08);
  --line: rgba(31, 27, 20, 0.14);
  --line-strong: rgba(31, 27, 20, 0.42);
  --control: #faf6ec;
  --control-hover: #f3ecde;
  --radius-sm: 6px;
  --radius: 8px;
  --tap: 44px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
}

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

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

.primary-button:disabled,
.level-card.is-current button:disabled {
  border-color: var(--line-soft);
  background: var(--control);
  color: var(--text-faint);
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 2px;
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 3px;
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
  line-height: 1.05;
  letter-spacing: 0;
}

p {
  color: var(--text-soft);
  line-height: 1.42;
}

.shell {
  width: min(1040px, 100%);
  margin: 0 auto;
  padding: 22px 18px 28px;
}

.topbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-4);
  align-items: end;
  padding: 8px 2px 18px;
}

.brand-lockup {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: var(--space-3);
  align-items: center;
}

.brand-mark {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(31, 122, 88, 0.22);
  border-radius: var(--radius);
  color: var(--garden-dark);
  background: var(--garden-wash);
  font-size: 2.55rem;
  font-weight: 900;
  line-height: 1;
}

.eyebrow {
  display: none;
}

.hero-copy {
  max-width: 560px;
  margin-bottom: 0;
  color: var(--text-soft);
  font-size: 0.98rem;
}

.score-tile {
  min-width: 118px;
  padding: 10px 12px;
  border: 1px solid rgba(31, 122, 88, 0.28);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.62);
  text-align: center;
}

.score-tile span {
  display: block;
  color: var(--garden-dark);
  font-size: 1.55rem;
  font-weight: 850;
  line-height: 1;
}

.score-tile small,
.source-note,
.card-source {
  color: var(--text-soft);
  font-size: 0.78rem;
}

.tabs {
  display: flex;
  gap: var(--space-2);
  margin: 0 0 var(--space-3);
  padding: var(--space-1);
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.55);
}

.tab,
.ghost-button,
.primary-button,
.choice {
  min-height: var(--tap);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--control);
  color: var(--ink);
  transition: border-color 140ms ease, background 140ms ease, color 140ms ease;
}

.tab {
  flex: 1 0 140px;
  min-height: 38px;
  padding: 0 14px;
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 750;
}

.tab:hover,
.choice:hover,
.ghost-button:hover,
.map-button:hover {
  background: var(--control-hover);
  border-color: var(--line-strong);
}

.tab.is-active,
.primary-button {
  border-color: var(--garden-dark);
  background: var(--garden);
  color: white;
}

.ghost-button,
.primary-button {
  padding: 0 14px;
  font-weight: 760;
  white-space: nowrap;
}

.utility-strip {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-3);
  margin: 0 0 var(--space-4);
}

.utility-card {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.42);
}

.utility-card summary {
  min-height: 48px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3);
  align-items: center;
  padding: 10px 12px;
  cursor: pointer;
  list-style: none;
}

.utility-card summary::-webkit-details-marker {
  display: none;
}

.utility-card summary::after {
  content: "+";
  color: var(--text-faint);
  font-weight: 900;
}

.utility-card[open] summary::after {
  content: "-";
}

.utility-card summary span {
  color: var(--text);
  font-weight: 780;
}

.utility-card summary small {
  grid-column: 1;
  color: var(--text-soft);
  font-size: 0.82rem;
}

.account-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: 0 12px 12px;
}

.account-strip span[data-tone="success"],
.account-strip small[data-tone="success"] {
  color: var(--garden-dark);
}

.account-strip span[data-tone="error"],
.account-strip small[data-tone="error"] {
  color: var(--clay);
}

.achievement-rail {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-2);
  padding: 0 12px 12px;
}

.achievement-card {
  min-height: 62px;
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: var(--space-2);
  align-items: start;
  padding: 10px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(255, 253, 247, 0.52);
  opacity: 0.52;
}

.achievement-card.is-unlocked {
  border-color: rgba(31, 122, 88, 0.32);
  background: var(--garden-wash);
  opacity: 1;
}

.achievement-card > span {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  background: var(--paper-quiet);
  color: var(--text-soft);
  font-size: 0.78rem;
  font-weight: 900;
}

.achievement-card.is-unlocked > span {
  background: var(--garden);
  color: white;
}

.achievement-card strong,
.achievement-card small {
  display: block;
}

.achievement-card strong {
  color: var(--text);
  font-size: 0.82rem;
  line-height: 1.16;
}

.achievement-card small {
  color: var(--text-soft);
  font-size: 0.73rem;
  line-height: 1.22;
}

.panel {
  display: none;
}

.panel.is-active {
  display: block;
}

.level-head {
  display: flex;
  gap: var(--space-4);
  align-items: start;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  padding: var(--space-5);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--sheet);
}

.level-head p {
  max-width: 640px;
  margin-bottom: 0;
}

.level-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
}

.level-card {
  min-height: 142px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.58);
}

.level-card.is-current {
  grid-column: span 2;
  min-height: 242px;
  padding: var(--space-5);
  border-color: var(--ink);
  background: var(--sheet);
}

.level-card.is-complete {
  border-color: rgba(31, 122, 88, 0.28);
  background: rgba(230, 241, 233, 0.7);
}

.level-card.is-locked {
  border-color: var(--line-soft);
  background: rgba(255, 253, 247, 0.28);
}

.level-card strong {
  display: block;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.16;
}

.level-card.is-current strong {
  max-width: 420px;
  font-size: clamp(1.75rem, 4vw, 2.45rem);
  line-height: 1;
}

.level-card-main {
  min-width: 0;
}

.level-kicker {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.level-kicker span {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  color: white;
  background: var(--ink);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
  font-weight: 850;
}

.level-card.is-current .level-kicker span {
  width: 44px;
  height: 44px;
  background: var(--garden);
  font-size: 0.9rem;
}

.level-card.is-complete .level-kicker span {
  background: var(--garden-dark);
}

.level-card.is-locked .level-kicker span {
  background: #8b867c;
}

.level-kicker small {
  color: var(--text-soft);
  font-size: 0.72rem;
  font-weight: 850;
  text-transform: uppercase;
}

.level-card.is-current .level-kicker small {
  color: var(--garden-dark);
}

.level-letters {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: var(--space-3) 0 var(--space-2);
  font-size: 1.55rem;
  line-height: 1;
}

.level-card.is-current .level-letters {
  gap: 8px;
  margin: var(--space-5) 0 var(--space-3);
  font-size: clamp(2.2rem, 5vw, 3.7rem);
}

.level-letters span {
  display: grid;
  place-items: center;
  min-width: 30px;
  height: 30px;
  padding: 0 4px;
  border-radius: var(--radius-sm);
  color: var(--garden-dark);
  background: var(--garden-wash);
  font-weight: 820;
}

.level-card.is-current .level-letters span {
  min-width: 52px;
  height: 52px;
  background: transparent;
  color: var(--ink);
}

.level-card.is-locked .level-letters {
  opacity: 0.42;
}

.level-card button {
  width: 100%;
  min-height: 40px;
  margin-top: var(--space-3);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--control);
  color: var(--ink);
  font-weight: 780;
}

.level-card.is-current button {
  min-height: 48px;
  border-color: var(--garden-dark);
  background: var(--garden);
  color: white;
}

.level-card.is-complete button {
  border-color: rgba(31, 122, 88, 0.34);
  color: var(--garden-dark);
  background: var(--garden-wash);
}

.mini {
  color: var(--text-soft);
  font-size: 0.82rem;
  line-height: 1.32;
}

.stage {
  margin-top: var(--space-4);
  padding: var(--space-5);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--sheet);
}

.play-stage {
  margin-top: 0;
}

.play-nav {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: var(--space-3);
  align-items: center;
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--line-soft);
}

.play-title {
  min-width: 0;
}

.play-title h2 {
  margin-bottom: 2px;
}

.play-title p {
  margin-bottom: 0;
  font-size: 0.9rem;
}

.play-progress {
  display: grid;
  gap: var(--space-2);
  justify-items: end;
}

.play-progress-count {
  color: var(--text-soft);
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
}

.play-progress .progress-row {
  margin-top: 0;
  justify-content: end;
}

.map-button {
  min-height: var(--tap);
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--control);
  color: var(--ink);
  font-weight: 760;
  white-space: nowrap;
}

.lesson-card {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(280px, 1.05fr);
  gap: var(--space-5);
  align-items: start;
}

.lesson-copy {
  padding: 0;
  border: 0;
  background: transparent;
}

.lesson-kicker {
  display: inline-flex;
  margin-bottom: var(--space-3);
  padding: 4px 8px;
  border: 1px solid rgba(31, 122, 88, 0.28);
  border-radius: 999px;
  color: var(--garden-dark);
  background: var(--garden-wash);
  font-size: 0.72rem;
  font-weight: 900;
  text-transform: uppercase;
}

.lesson-tip {
  margin-bottom: 0;
  color: var(--ink);
  font-weight: 760;
}

.lesson-letters {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(108px, 1fr));
  gap: var(--space-2);
}

.lesson-letter {
  min-height: 104px;
  display: grid;
  gap: 3px;
  place-items: center;
  padding: var(--space-3);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.64);
  text-align: center;
}

.lesson-letter strong {
  color: var(--ink);
  font-size: 2.75rem;
  line-height: 1;
}

.lesson-letter span {
  font-weight: 850;
}

.lesson-letter small {
  color: var(--text-soft);
}

.lesson-examples {
  grid-column: 1 / -1;
  padding: var(--space-3) 0 0;
  border-top: 1px solid var(--line-soft);
  color: var(--text-soft);
}

.lesson-examples span {
  display: block;
  margin-bottom: 4px;
  color: var(--garden-dark);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.lesson-card .primary-button {
  grid-column: 1 / -1;
  justify-self: start;
  min-width: 220px;
  padding: 0 20px;
}

.prompt-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.6fr);
  gap: var(--space-4);
  align-items: stretch;
}

.glyph-pond {
  min-height: 230px;
  display: grid;
  place-items: center;
  padding: var(--space-5);
  border: 1px solid rgba(31, 122, 88, 0.2);
  border-radius: var(--radius);
  background: var(--garden-wash);
}

.big-glyph {
  font-size: clamp(5rem, 15vw, 9rem);
  font-weight: 900;
  line-height: 1;
}

.glyph-word {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.04em;
  flex-wrap: wrap;
}

.marked-glyph {
  display: inline-grid;
  place-items: center;
  min-width: 0.95em;
  padding: 0 0.08em 0.08em;
  border-radius: var(--radius-sm);
  color: var(--ink);
  background: rgba(216, 170, 69, 0.48);
}

.prompt-copy {
  margin: 0 0 var(--space-3);
  color: var(--ink);
  font-weight: 820;
}

.choices {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

.choice {
  padding: 12px 14px;
  text-align: left;
  background: var(--sheet);
  overflow-wrap: anywhere;
  font-weight: 760;
}

.choice.is-correct {
  border-color: rgba(31, 122, 88, 0.55);
  background: var(--garden-wash);
}

.choice.is-wrong {
  border-color: rgba(170, 89, 71, 0.55);
  background: rgba(170, 89, 71, 0.08);
}

.feedback {
  min-height: 28px;
  margin-top: var(--space-3);
  font-weight: 780;
}

.progress-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: var(--space-3);
}

.seed-dot {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--paper-quiet);
}

.seed-dot.is-correct {
  background: var(--garden);
}

.seed-dot.is-wrong {
  background: var(--clay);
}

.search {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-soft);
  font-weight: 760;
}

.search input {
  width: min(280px, 44vw);
  min-height: var(--tap);
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--control);
}

.script-toggle {
  display: grid;
  grid-template-columns: repeat(2, minmax(82px, 1fr));
  gap: var(--space-1);
  padding: var(--space-1);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.58);
}

.script-toggle button {
  min-height: 36px;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-soft);
  font-weight: 780;
}

.script-toggle button.is-active {
  background: var(--garden);
  color: white;
}

.converter-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 36px minmax(0, 1fr);
  gap: var(--space-3);
  align-items: stretch;
}

.converter-pane {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: var(--space-2);
  min-width: 0;
  padding: var(--space-3);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--sheet);
}

.converter-pane span {
  color: var(--text);
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
}

.converter-pane textarea {
  min-height: 210px;
  width: 100%;
  resize: vertical;
  padding: var(--space-3);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: var(--control);
  color: var(--ink);
  line-height: 1.5;
  outline: none;
}

.converter-pane textarea:focus {
  border-color: rgba(31, 122, 88, 0.48);
  box-shadow: 0 0 0 3px rgba(31, 122, 88, 0.12);
}

.converter-pane-tifinagh textarea {
  font-size: 1.55rem;
  line-height: 1.45;
}

.converter-mark {
  display: grid;
  place-items: center;
  align-self: center;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  color: var(--garden-dark);
  background: var(--garden-wash);
  font-size: 1.6rem;
  font-weight: 950;
}

.converter-status {
  min-height: 24px;
  margin: var(--space-3) 0 var(--space-2);
  color: var(--text-soft);
  font-size: 0.9rem;
  font-weight: 740;
}

.converter-key {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.converter-chip {
  padding: 6px 8px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background: rgba(255, 253, 247, 0.58);
  color: var(--text-soft);
  font-size: 0.8rem;
  font-weight: 760;
}

.cheat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: var(--space-3);
}

.letter-card {
  padding: var(--space-3);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.62);
}

.letter-row {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: var(--space-3);
  align-items: center;
}

.letter-glyph {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  background: var(--garden-wash);
  color: var(--ink);
  font-size: 2rem;
  font-weight: 900;
}

.letter-meta {
  display: grid;
  gap: 3px;
}

.letter-meta b {
  font-size: 1.08rem;
}

.letter-arabic {
  direction: rtl;
  text-align: left;
}

.lexicon-strip {
  margin-top: var(--space-2);
  color: var(--text-soft);
  font-size: 0.84rem;
}

.source-note {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--line-soft);
}

.stat-summary,
.weak-radar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.stat-summary span,
.weak-pill {
  padding: 7px 9px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background: rgba(255, 253, 247, 0.58);
  color: var(--text-soft);
  font-size: 0.85rem;
  font-weight: 760;
}

.weak-radar {
  margin-bottom: var(--space-3);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: var(--space-3);
}

.stat-card {
  padding: var(--space-3);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.62);
}

.stat-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.stat-top strong {
  font-size: 1.9rem;
  line-height: 1;
}

.meter {
  height: 7px;
  margin: var(--space-2) 0;
  overflow: hidden;
  border-radius: 999px;
  background: var(--paper-quiet);
}

.meter span {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--garden);
}

.maker-credit {
  display: flex;
  justify-content: center;
  margin: var(--space-5) 0 0;
}

.maker-credit a {
  display: inline-flex;
  gap: var(--space-2);
  align-items: center;
  padding: 8px 10px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background: rgba(255, 253, 247, 0.42);
  color: var(--text-soft);
  font-size: 0.82rem;
  font-weight: 760;
  text-decoration: none;
}

.maker-credit img {
  width: 22px;
  height: 22px;
  object-fit: contain;
}

@media (max-width: 900px) {
  .utility-strip,
  .topbar,
  .prompt-card,
  .play-nav {
    grid-template-columns: 1fr;
  }

  .score-tile {
    justify-self: start;
  }

  .level-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .level-card.is-current {
    grid-column: 1 / -1;
  }

  .lesson-card,
  .converter-grid {
    grid-template-columns: 1fr;
  }

  .converter-mark {
    justify-self: center;
    transform: rotate(90deg);
  }

  .play-progress {
    justify-items: start;
  }

  .play-progress .progress-row {
    justify-content: start;
  }
}

@media (max-width: 560px) {
  .shell {
    padding: 14px 10px 20px;
  }

  .brand-lockup {
    grid-template-columns: 44px minmax(0, 1fr);
  }

  .brand-mark {
    width: 44px;
    height: 44px;
    font-size: 2.1rem;
  }

  h1 {
    font-size: 1.85rem;
  }

  .hero-copy {
    font-size: 0.9rem;
  }

  .tabs {
    gap: 6px;
  }

  .tab {
    flex-basis: 122px;
  }

  .level-head,
  .stage {
    padding: var(--space-4);
  }

  .level-head {
    display: grid;
  }

  .level-grid,
  .choices,
  .account-actions {
    grid-template-columns: 1fr;
  }

  .level-card.is-current {
    min-height: 218px;
    padding: var(--space-4);
  }

  .glyph-pond {
    min-height: 172px;
  }
}