:root {
  --ink: #f2eee6;
  --muted: #bfc2b8;
  --paper: #17130f;
  --surface: #232823;
  --wash: #2a332b;
  --line: #4c554d;
  --accent: #526d57;
  --accent-hover: #66836b;
  --accent-dark: #c9ddc8;
  --accent-soft: #29382d;
  --sand: #3a342e;
  --sand-dark: #e1d1bf;
  --sand-line: #746a5f;
  --wheat: #403a27;
  --wheat-dark: #ead79b;
  --mauve: #d8b9cc;
  --mauve-soft: #3a2d36;
  --mauve-line: #715b69;
  --mineral: #aed0d8;
  --mineral-soft: #29383c;
  --mineral-line: #587077;
  --focus: #b7d093;
  --field-border: #69736b;
  --placeholder: #a8aca4;
  --privacy-ink: #e2d5c5;
  --warning: #efd7a4;
  --error-bg: #3d3322;
  --error-line: #8b7446;
  --on-accent: #fffdf8;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.3);
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --radius-sm: 0.65rem;
  --radius: 1rem;
  --radius-lg: 1.5rem;
  --font: "Avenir Next", Avenir, "Segoe UI", ui-sans-serif, system-ui, sans-serif;
  --display-font: "Avenir Next", Avenir, "Segoe UI", ui-sans-serif, system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
body { margin: 0; min-height: 100vh; color: var(--ink); background: radial-gradient(circle at 8% 0%, #ddd3c2 0, transparent 30rem), radial-gradient(circle at 100% 34%, #d8e2e2 0, transparent 28rem), linear-gradient(155deg, #f3f0e9 0%, #ebe7df 54%, #e4dfd6 100%); font-family: var(--font); line-height: 1.55; }
button, textarea, select, input { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: wait; opacity: 0.58; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }

.site-header { position: sticky; z-index: 10; top: 0; max-width: 72rem; margin: 0 auto; padding: var(--space-4) var(--space-4); display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); background: color-mix(in srgb, var(--paper) 92%, transparent); border-bottom: 1px solid color-mix(in srgb, var(--line) 75%, transparent); backdrop-filter: blur(12px); }
.brand { color: var(--ink); display: inline-flex; align-items: center; gap: 0.7rem; font-weight: 650; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 2rem; height: 2rem; border-radius: 50%; color: var(--on-accent); background: var(--accent); font-family: var(--display-font); font-size: 1.2rem; }
.site-header > p { margin: 0; color: var(--muted); font-size: 0.92rem; }

main { width: min(100% - 2rem, 52rem); margin: var(--space-5) auto var(--space-6); }
.panel { padding: clamp(1.4rem, 4vw, 3rem); background: linear-gradient(135deg, color-mix(in srgb, var(--mauve-soft) 88%, transparent), color-mix(in srgb, var(--mineral-soft) 80%, transparent)); border: 1px solid color-mix(in srgb, var(--mineral) 34%, transparent); border-radius: var(--radius-lg); box-shadow: 0 24px 60px rgba(0, 0, 0, 0.42); backdrop-filter: blur(18px); }
.eyebrow { color: var(--mauve); font-weight: 650; font-size: 0.76rem; letter-spacing: 0.11em; text-transform: uppercase; }
h1, h2 { line-height: 1.15; letter-spacing: -0.025em; }
h1 { max-width: 18ch; margin: var(--space-2) 0 var(--space-3); font-family: var(--display-font); font-size: clamp(2rem, 6vw, 3.45rem); font-weight: 600; }
h2 { font-size: 1.35rem; }
.intro { max-width: 42rem; margin: 0 0 var(--space-5); color: var(--muted); font-size: 1.08rem; }

form { display: grid; gap: var(--space-4); }
fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
legend, label { display: block; margin-bottom: 0.55rem; font-weight: 600; }
.choice-row { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice span { display: inline-block; padding: 0.62rem 0.92rem; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); font-weight: 550; }
.choice:nth-child(2) span { color: var(--mauve); background: color-mix(in srgb, var(--mauve-soft) 72%, var(--surface)); border-color: var(--mauve-line); }
.choice:nth-child(3) span { color: var(--mineral); background: color-mix(in srgb, var(--mineral-soft) 76%, var(--surface)); border-color: var(--mineral-line); }
.choice input:checked + span { color: var(--accent-dark); border-color: var(--accent); background: var(--accent-soft); box-shadow: inset 0 0 0 1px var(--accent); }
.choice input:focus-visible + span { outline: 3px solid var(--focus); outline-offset: 3px; }
.field { min-width: 0; }
.label-line { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.label-line span, .field-help { color: var(--muted); font-size: 0.84rem; }
select, textarea { width: 100%; color: var(--ink); background: var(--surface); border: 1px solid var(--field-border); border-radius: var(--radius-sm); }
select { min-height: 3.1rem; padding: 0.7rem 2.5rem 0.7rem 0.85rem; }
textarea { display: block; padding: 0.9rem 1rem; line-height: 1.55; resize: vertical; }
textarea::placeholder { color: var(--placeholder); }
.field-help { margin: 0.5rem 0 0; }
.privacy-note { display: flex; gap: 0.8rem; padding: 0.9rem 1rem; color: var(--sand-dark); background: var(--sand); border-radius: var(--radius-sm); font-size: 0.9rem; }
.privacy-note p { margin: 0; }

.primary-button, .secondary-button, .text-button { border-radius: var(--radius-sm); font-weight: 650; }
.primary-button { justify-self: start; min-height: 3.15rem; padding: 0.75rem 1.1rem; color: var(--on-accent); background: var(--accent); border: 1px solid var(--accent); box-shadow: 0 7px 15px rgba(70, 85, 66, 0.2); }
.primary-button:hover { background: var(--accent-hover); }
.secondary-button { min-height: 3.15rem; padding: 0.75rem 1.1rem; color: var(--sand-dark); background: var(--surface); border: 1px solid var(--sand-line); }
.text-button { padding: 0.35rem 0; color: var(--accent-dark); background: transparent; border: 0; text-decoration: underline; text-underline-offset: 0.22rem; }
#clear-history-button { color: var(--mauve); }

.session-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; }
.session-header-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: var(--space-3); }
.session-heading h1 { margin-bottom: var(--space-4); font-size: clamp(1.9rem, 5vw, 2.8rem); }
.session-meta { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); margin-bottom: var(--space-3); }
.stage-pill { display: inline-block; padding: 0.35rem 0.7rem; color: var(--wheat-dark); background: var(--wheat); border-radius: 999px; font-size: 0.78rem; font-weight: 650; text-transform: capitalize; }
.hint-count { margin: 0; color: var(--muted); font-size: 0.82rem; font-weight: 550; }
.question-card { position: sticky; z-index: 6; top: 5.4rem; margin-bottom: var(--space-4); padding: var(--space-4); background: color-mix(in srgb, var(--mineral-soft) 82%, var(--surface)); border: 1px solid var(--mineral-line); border-left: 4px solid var(--mineral); border-radius: 0 var(--radius) var(--radius) 0; box-shadow: 0 10px 24px rgba(0, 0, 0, 0.24); }
.speaker { margin: 0 0 0.35rem; color: var(--mineral); font-weight: 650; font-size: 0.78rem; letter-spacing: 0.09em; text-transform: uppercase; }
.question { margin: 0; font-family: var(--display-font); font-size: clamp(1.25rem, 3vw, 1.65rem); font-weight: 550; line-height: 1.4; }
.button-row { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.transcript-section { margin: var(--space-4) 0; border-block: 1px solid var(--line); }
.transcript-section summary { display: flex; align-items: center; gap: var(--space-2); padding: var(--space-3) 0; color: var(--mauve); cursor: pointer; font-weight: 600; list-style: none; }
.transcript-section summary::-webkit-details-marker { display: none; }
.transcript-section summary::before { content: "+"; display: grid; place-items: center; width: 1.6rem; height: 1.6rem; background: var(--mauve-soft); border-radius: 50%; font-weight: 850; }
.transcript-section[open] summary::before { content: "−"; }
.transcript-list { display: grid; gap: var(--space-3); padding: 0; list-style: none; }
.turn { padding-left: var(--space-3); border-left: 2px solid var(--line); }
.turn p { margin: 0.25rem 0; white-space: pre-wrap; }
.turn strong { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; }
.explain-back { margin-top: var(--space-5); padding-top: var(--space-5); border-top: 1px solid var(--line); }
.explain-back h2 { margin: 0.45rem 0; font-family: var(--display-font); font-size: 2rem; font-weight: 600; }
.explain-back > p { color: var(--muted); }
.completion { display: flex; gap: var(--space-3); margin-top: var(--space-5); padding: var(--space-4); background: var(--mauve-soft); border-radius: var(--radius); }
.completion-mark { flex: 0 0 auto; display: grid; place-items: center; width: 2.4rem; height: 2.4rem; color: var(--on-accent); background: var(--accent); border-radius: 50%; font-weight: 900; }
.completion h2, .completion p { margin: 0.25rem 0; }
.drafts-panel, .history-panel { margin-top: var(--space-4); }
.history-note, .history-meta, .history-concepts { color: var(--muted); font-size: 0.9rem; }
.drafts-list { display: grid; gap: var(--space-2); margin-top: var(--space-4); }
.draft-card { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); padding: var(--space-3); background: var(--mineral-soft); border: 1px solid var(--mineral-line); border-radius: var(--radius); }
.draft-card h3, .draft-card p { margin: 0; }
.draft-card h3 { font-size: 1rem; }
.compact-button { flex: 0 0 auto; min-height: 2.65rem; padding: 0.55rem 0.8rem; }
.recurring-concepts { padding: var(--space-3); color: var(--wheat-dark); background: var(--wheat); border-radius: var(--radius-sm); font-weight: 550; }
.history-card { border-top: 1px solid var(--line); }
.history-card:last-child { border-bottom: 1px solid var(--line); }
.history-card summary { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); padding: var(--space-3) 0; cursor: pointer; list-style: none; }
.history-card summary::-webkit-details-marker { display: none; }
.history-card summary::before { content: "+"; flex: 0 0 auto; display: grid; place-items: center; width: 1.6rem; height: 1.6rem; color: var(--mauve); background: var(--mauve-soft); border-radius: 50%; font-weight: 800; }
.history-card[open] summary::before { content: "−"; }
.history-summary-text { display: flex; flex: 1 1 auto; align-items: baseline; flex-wrap: wrap; gap: 0.35rem var(--space-3); }
.history-summary-text strong { min-width: 6rem; }
.history-summary-text span { color: var(--muted); font-size: 0.86rem; }
.history-summary-action { color: var(--mauve); font-size: 0.86rem; font-weight: 600; }
.history-card-body { padding: 0 0 var(--space-4) 2.6rem; }
.history-card-body > p { margin: var(--space-1) 0; }
.concept-tags { display: flex; flex-wrap: wrap; gap: var(--space-1); margin: var(--space-3) 0; padding: 0; list-style: none; }
.concept-tags li { padding: 0.22rem 0.55rem; color: var(--accent-dark); background: var(--accent-soft); border-radius: 999px; font-size: 0.78rem; font-weight: 550; }
.concept-tags li:nth-child(3n + 2) { color: var(--mauve); background: var(--mauve-soft); }
.concept-tags li:nth-child(3n) { color: var(--mineral); background: var(--mineral-soft); }
.history-reflection-title { margin: var(--space-3) 0 var(--space-1); font-size: 1rem; }
.history-explanation { padding-left: var(--space-3); border-left: 2px solid var(--line); white-space: pre-wrap; }
.status { position: fixed; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.error-banner { position: fixed; z-index: 2; right: 1rem; bottom: 1rem; max-width: min(32rem, calc(100% - 2rem)); padding: 0.9rem 1rem; color: var(--warning); background: var(--error-bg); border: 1px solid var(--error-line); border-radius: var(--radius-sm); box-shadow: var(--shadow); }
footer { width: min(100% - 2rem, 52rem); margin: 0 auto; padding-bottom: var(--space-5); color: #4f534e; font-size: 0.82rem; text-align: center; }
[hidden] { display: none !important; }

@media (max-width: 600px) {
  .site-header { align-items: flex-start; padding: var(--space-3); }
  .site-header > p { display: none; }
  main { width: min(100% - 1rem, 52rem); margin-top: var(--space-2); }
  .panel { padding: 1.25rem; border-radius: var(--radius); }
  .choice-row { display: grid; grid-template-columns: 1fr; }
  .choice span { width: 100%; }
  .session-heading { align-items: baseline; }
  .question-card { top: 4.1rem; padding: var(--space-3); }
  .session-header-actions { align-items: flex-end; flex-direction: column; gap: var(--space-1); }
  .button-row > button { flex: 1 1 auto; }
  .primary-button { justify-self: stretch; }
  .draft-card { align-items: stretch; flex-direction: column; }
  .compact-button { width: 100%; }
  .history-card summary { align-items: flex-start; }
  .history-summary-text { flex-direction: column; gap: 0.15rem; }
  .history-summary-action { display: none; }
  .history-card-body { padding-left: 0; }
}