:root {
  --ink: #14201c;
  --paper: #f4efe4;
  --card: #fffaf1;
  --line: #d7cdbb;
  --accent: #0f6a4b;
  --accent-2: #b45309;
  --warn: #7c2d12;
  --good: #14532d;
  --shadow: 0 18px 40px rgba(20, 32, 28, 0.08);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: "Segoe UI", "Helvetica Neue", sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 12% 8%, rgba(15, 106, 75, 0.12), transparent 36%),
    radial-gradient(circle at 88% 0%, rgba(180, 83, 9, 0.12), transparent 30%),
    linear-gradient(180deg, #efe6d4 0%, var(--paper) 42%, #ebe4d6 100%);
  color: var(--ink);
  font-family: var(--sans);
}
.igbo-app { max-width: 1100px; margin: 0 auto; padding: 1.25rem 1rem 3rem; }
.brand { margin: 0; letter-spacing: 0.08em; text-transform: uppercase; font-size: 0.75rem; color: var(--accent); }
.top h1 { font-family: var(--serif); font-size: clamp(2rem, 4vw, 3rem); margin: 0.2rem 0; }
.sub { margin: 0; max-width: 42rem; color: #3f4a45; }
.top { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: flex-start; margin-bottom: 1rem; }
.top-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: end; }
.mode { display: grid; gap: 0.25rem; font-size: 0.8rem; }
.mode select, button, .chip {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  text-decoration: none;
  cursor: pointer;
}
.tabs { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 1rem 0; }
.tabs button.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.panel { background: rgba(255,250,241,0.88); border: 1px solid var(--line); border-radius: 1.25rem; padding: 1.1rem; box-shadow: var(--shadow); min-height: 28rem; }
.grid { display: grid; gap: 0.9rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 0.9rem 1rem;
}
.card h3 { margin: 0 0 0.35rem; font-family: var(--serif); }
.igbo-line { font-family: var(--serif); font-size: 1.55rem; margin: 0.2rem 0; }
.meta { color: #5b645f; font-size: 0.9rem; }
.badge {
  display: inline-block;
  font-size: 0.72rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: #fef3c7;
  color: var(--warn);
  border: 1px solid #f59e0b55;
}
.row { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; margin-top: 0.6rem; }
.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.ghost { background: transparent; }
.tokens { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.7rem; }
.token {
  border: 1px dashed var(--accent);
  background: #ecfdf5;
  padding: 0.35rem 0.65rem;
  border-radius: 0.7rem;
  cursor: grab;
}
.dropzone {
  min-height: 3rem;
  border: 2px dashed var(--line);
  border-radius: 0.8rem;
  padding: 0.5rem;
  display: flex; flex-wrap: wrap; gap: 0.4rem;
  background: #fff;
}
.ok { color: var(--good); font-weight: 600; }
.err { color: var(--warn); font-weight: 600; }
.progress {
  height: 0.55rem; background: #e7e0d2; border-radius: 999px; overflow: hidden; margin: 0.5rem 0 1rem;
}
.progress > span { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), #2dd4bf); width: 18%; }
.foot { margin-top: 1rem; color: #4b5550; font-size: 0.88rem; }
@media (max-width: 640px) {
  .igbo-line { font-size: 1.25rem; }
}


/* Igbo progressive disclosure — supporting detail starts collapsed */
.igbo-disclosure {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: .9rem;
  margin: .75rem 0;
}
.igbo-disclosure > summary {
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .65rem .85rem;
  list-style: none;
  cursor: pointer;
  font-weight: 650;
}
.igbo-disclosure > summary::-webkit-details-marker { display: none; }
.igbo-disclosure > summary::before {
  content: "›";
  display: inline-grid;
  place-items: center;
  width: 1.45rem;
  height: 1.45rem;
  flex: 0 0 1.45rem;
  border-radius: 50%;
  background: #e4efe9;
  color: var(--accent);
  transition: transform .16s ease;
}
.igbo-disclosure[open] > summary::before { transform: rotate(90deg); }
.igbo-disclosure > summary:focus-visible {
  outline: 3px solid #f59e0b;
  outline-offset: 2px;
}
.disclosure-content { padding: 0 .9rem .9rem; }
.igbo-disclosure--orientation { margin: 0 0 1rem; }
.course-action-grid { display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:.75rem; }
.course-action-grid .card { min-height: 100%; }
@media (prefers-reduced-motion: reduce) {
  .igbo-disclosure > summary::before { transition:none; }
}


.account-status{display:inline-flex;align-items:center;min-height:2.2rem;padding:.35rem .7rem;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.08);font-size:.85rem}
.module-list{display:grid;gap:.8rem}
.module-card{border:1px solid var(--line);border-radius:1rem;background:var(--card);padding:1rem}
.module-card h3{margin-top:0}
.lesson-row{display:flex;justify-content:space-between;gap:1rem;padding:.6rem 0;border-top:1px solid var(--line);align-items:center}
.lesson-row:first-of-type{border-top:0}
.status-pill{font-size:.74rem;border-radius:999px;padding:.25rem .55rem;background:var(--soft)}
.auth-note{font-size:.85rem;color:var(--muted)}