@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,600;0,9..144,700;1,9..144,500&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --sage: #7C9885;
  --sage-deep: #667F6F;
  --ink: #1E2420;
  --parchment: #F3EEE2;
  --parchment-dim: #E7E0CF;
  --ochre: #C79A4B;
  --coral: #D97B5C;
  --focus: #F3EEE2;

  --font-display: 'Fraunces', serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--sage);
  color: var(--ink);
  font-family: var(--font-body);
}

body {
  min-height: 100vh;
  background-image:
    radial-gradient(circle at 15% 10%, rgba(243,238,226,0.10) 0%, transparent 45%),
    radial-gradient(circle at 85% 90%, rgba(30,36,32,0.10) 0%, transparent 45%);
}

a { color: inherit; }

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  background: none;
}

button:focus-visible,
[tabindex]:focus-visible,
input:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

/* ---------- Layout shell ---------- */

.app-shell {
  max-width: 1040px;
  margin: 0 auto;
  padding: 28px 24px 64px;
}

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

.wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.01em;
}

.wordmark span { color: var(--parchment); }

.wallet-status {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: rgba(30,36,32,0.18);
  color: var(--parchment);
  padding: 8px 14px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.wallet-status .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--coral);
}

.wallet-status.connected .dot { background: #8FBF8A; }

.connect-btn {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--ink);
  color: var(--parchment);
  padding: 9px 16px;
  border-radius: 999px;
  transition: transform 0.15s ease;
}
.connect-btn:hover { transform: translateY(-1px); }

/* ---------- Onboarding: the two-head selector ---------- */

.onboarding {
  margin-top: 48px;
  text-align: center;
}

.onboarding h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: var(--parchment);
  margin-bottom: 6px;
  line-height: 1.15;
}

.onboarding p.sub {
  color: rgba(243,238,226,0.85);
  font-size: 1.02rem;
  max-width: 480px;
  margin: 0 auto 44px;
}

.head-picker {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0;
  max-width: 720px;
  margin: 0 auto;
}

.head-option {
  flex: 1;
  padding: 32px 20px;
  border-radius: 20px;
  background: rgba(30,36,32,0.14);
  transition: background 0.2s ease, transform 0.2s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.head-option:hover, .head-option:focus-visible {
  background: rgba(30,36,32,0.24);
  transform: translateY(-2px);
}

.head-option.selected {
  background: var(--ink);
}

.head-option svg { width: 96px; height: 96px; }

.head-option .head-label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--parchment);
}

.head-option .head-sub {
  font-size: 0.85rem;
  color: rgba(243,238,226,0.75);
  max-width: 220px;
}

.head-connector {
  width: 48px;
  height: 2px;
  background: rgba(243,238,226,0.35);
  flex-shrink: 0;
}

/* Career preset chips, shown after picking the spiral head */

.career-picker {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

.career-picker.hidden { display: none; }

.chip {
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 9px 16px;
  border-radius: 999px;
  background: rgba(243,238,226,0.9);
  color: var(--ink);
  transition: background 0.15s ease, transform 0.15s ease;
}

.chip:hover { transform: translateY(-1px); background: var(--parchment); }

.chip.selected {
  background: var(--ochre);
  color: var(--ink);
}

.custom-career-row {
  margin-top: 14px;
  display: flex;
  justify-content: center;
  gap: 8px;
}

.custom-career-row input {
  font-family: var(--font-body);
  font-size: 0.88rem;
  padding: 9px 14px;
  border-radius: 999px;
  border: 1px solid rgba(243,238,226,0.4);
  background: rgba(30,36,32,0.14);
  color: var(--parchment);
  width: 220px;
}
.custom-career-row input::placeholder { color: rgba(243,238,226,0.55); }

.custom-career-row button {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 9px 16px;
  border-radius: 999px;
  background: var(--parchment);
  color: var(--ink);
}

/* ---------- Main explainer view ---------- */

.explainer-view { display: none; margin-top: 40px; }
.explainer-view.active { display: block; }

.mode-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 26px;
  flex-wrap: wrap;
  gap: 12px;
}

.mode-banner .label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: rgba(243,238,226,0.85);
  background: rgba(30,36,32,0.18);
  padding: 8px 14px;
  border-radius: 999px;
}

.change-mode-btn {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--parchment);
  text-decoration: underline;
  opacity: 0.8;
}
.change-mode-btn:hover { opacity: 1; }

.progress-track {
  height: 5px;
  background: rgba(30,36,32,0.18);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 30px;
}
.progress-fill {
  height: 100%;
  background: var(--ochre);
  width: 0%;
  transition: width 0.4s ease;
}

/* Monad-style menu bar, recreated */

.term-bar {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
}

.term-btn {
  background: rgba(30,36,32,0.16);
  border-radius: 14px;
  padding: 16px 16px 14px;
  text-align: left;
  color: var(--parchment);
  transition: background 0.15s ease, transform 0.15s ease;
  position: relative;
}

.term-btn:hover, .term-btn.open { background: rgba(30,36,32,0.32); transform: translateY(-1px); }

.term-btn.learned::after {
  content: '✓';
  position: absolute;
  top: 12px;
  right: 12px;
  color: #8FBF8A;
  font-size: 0.85rem;
}

.term-btn .tag {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  color: var(--ochre);
  display: block;
  margin-bottom: 6px;
}

.term-btn .label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.02rem;
}

/* Explanation card */

.explain-card {
  margin-top: 18px;
  background: var(--parchment);
  border-radius: 20px;
  padding: 26px 28px;
  display: none;
  animation: card-in 0.25s ease;
}

.explain-card.open { display: block; }

@keyframes card-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.explain-card-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}

.explain-card-head svg { width: 52px; height: 52px; flex-shrink: 0; }

.explain-card-head h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  margin: 0;
}

.explain-card-head .badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--sage-deep);
  display: block;
  margin-top: 2px;
}

.explain-card p.body-text {
  font-size: 1rem;
  line-height: 1.55;
  color: #2B332D;
  margin: 0 0 18px;
}

.explain-card p.body-text.fallback-note {
  font-size: 0.82rem;
  color: var(--sage-deep);
  font-style: italic;
}

.mark-learned-btn {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--ink);
  color: var(--parchment);
  padding: 10px 18px;
  border-radius: 999px;
  transition: transform 0.15s ease;
}
.mark-learned-btn:hover:not(:disabled) { transform: translateY(-1px); }
.mark-learned-btn:disabled { opacity: 0.55; cursor: default; }

.mark-learned-btn.done {
  background: #4C6350;
}

.tx-line {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--sage-deep);
  margin-top: 10px;
  word-break: break-all;
}

.tx-line a { text-decoration: underline; }

/* ---------- Footer ---------- */

.footer-note {
  margin-top: 48px;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(243,238,226,0.65);
}

/* ---------- Responsive ---------- */

@media (max-width: 640px) {
  .head-picker { flex-direction: column; }
  .head-connector { width: 2px; height: 32px; }
  .term-bar { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}