:root {
  --paper: #faf7f2;
  --surface: #ffffff;
  --surface-soft: #f4efe7;
  --border: #e7e0d4;
  --ink: #2b2b2b;
  --ink-soft: #6b645a;
  --accent: #b45309;
  --accent-dark: #92400e;
  --accent-soft: #fdeeda;
  --indigo: #4c51bf;
  --indigo-soft: #e6e8fb;
  --teal: #0f766e;
  --teal-soft: #ddf1ef;
  --green: #15803d;
  --green-soft: #e2f5e8;
  --red: #b91c1c;
  --red-soft: #fbe9e9;
  --amber: #b45309;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 1px 2px rgba(43, 43, 43, 0.05), 0 6px 24px rgba(43, 43, 43, 0.06);
  --font-sans: 'Inter', 'Noto Sans', system-ui, sans-serif;
  --font-dev: 'Noto Sans Devanagari', 'Noto Sans', serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-padding-top: 76px; }

body {
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
  min-height: 100vh;
}

#app { max-width: 980px; margin: 0 auto; padding: 0 20px 140px; }

/* ---------------------------------- top bar ---------------------------------- */
#topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0 12px;
  background: linear-gradient(var(--paper) 82%, rgba(250, 247, 242, 0));
}
.brand {
  display: flex; align-items: center; gap: 10px;
  background: none; border: none; cursor: pointer; padding: 0;
  font-family: inherit;
}
.brand-mark {
  width: 40px; height: 40px; border-radius: 11px;
  background: var(--accent); color: #fff;
  font-family: var(--font-dev); font-size: 1.35rem; font-weight: 700;
  display: grid; place-items: center;
  box-shadow: var(--shadow);
}
.brand-name { font-weight: 800; font-size: 1.12rem; letter-spacing: 0.2px; color: var(--ink); }
#topbar-right { position: relative; display: flex; align-items: center; gap: 10px; }

.level-switch { display: flex; gap: 4px; background: var(--surface-soft); border: 1px solid var(--border); border-radius: 999px; padding: 3px; }
.level-switch button {
  border: none; background: transparent; cursor: pointer;
  font-family: inherit; font-size: 0.8rem; font-weight: 600;
  padding: 5px 13px; border-radius: 999px; color: var(--ink-soft);
  transition: all 0.15s ease;
}
.level-switch button.active { background: var(--indigo); color: #fff; }

.chip {
  font-size: 0.78rem; font-weight: 700; padding: 5px 12px; border-radius: 999px;
  display: inline-flex; align-items: center; gap: 6px;
}
.chip.streak { background: var(--accent-soft); color: var(--accent-dark); border: 1px solid #f2d8b8; }

.user-chip {
  position: relative;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 14px; border-radius: 999px; cursor: pointer;
  background: var(--surface); border: 1px solid var(--border);
  font-size: 0.82rem; font-weight: 700; color: var(--ink);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.user-chip:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.user-chip.authed { background: var(--green-soft); border-color: #c5e6d0; color: var(--green); }
.user-chip.guest {
  background: var(--indigo); border-color: var(--indigo); color: #fff;
  font-weight: 700;
}
.user-chip.guest:hover { background: #4146a8; border-color: #4146a8; }
.user-chip .chip-user { max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-chip .chip-caret { font-size: 0.68rem; color: var(--ink-soft); }
.user-chip.guest .chip-caret { display: none; }

.user-menu {
  position: absolute; top: 58px; right: 0; z-index: 60;
  min-width: 170px; padding: 6px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); box-shadow: 0 10px 34px rgba(43,43,43,0.14);
}
.user-menu-item {
  display: block; width: 100%; text-align: left;
  font-family: inherit; font-size: 0.88rem; font-weight: 600;
  padding: 9px 12px; border: none; background: none; cursor: pointer;
  border-radius: 7px; color: var(--ink);
}
.user-menu-item:hover { background: var(--accent-soft); color: var(--accent-dark); }

/* auth modal */
.modal { position: fixed; inset: 0; z-index: 90; display: grid; place-items: center; }
.modal-backdrop {
  position: absolute; inset: 0; background: rgba(43, 43, 43, 0.45);
  backdrop-filter: blur(3px);
}
.modal-card {
  position: relative; z-index: 1;
  width: min(400px, calc(100vw - 40px));
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: 0 20px 60px rgba(43,43,43,0.25);
  padding: 26px 26px 22px;
}
.modal-card h3 { font-size: 1.35rem; margin-bottom: 16px; }
.sutra-modal-card {
  width: min(920px, calc(100vw - 30px)); max-height: 90vh; overflow-y: auto;
  padding: 0;
}
.sutra-modal-top {
  position: sticky; top: 0; z-index: 2;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 18px 24px 14px; background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.sutra-modal-top h3 { margin: 0; font-size: 1.2rem; }
.modal-close {
  width: 34px; height: 34px; border: 1px solid var(--border); border-radius: 50%;
  background: var(--surface-soft); color: var(--ink-soft); cursor: pointer;
  font-family: inherit; font-size: 1.5rem; line-height: 1;
}
.modal-close:hover { background: var(--accent-soft); color: var(--accent-dark); border-color: #f2d8b8; }
.sutra-modal-content { padding: 0 24px 24px; }
.sutra-modal-meta {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  flex-wrap: wrap; padding: 16px 0 4px;
}
.sutra-external-link {
  color: var(--indigo); font-size: 0.86rem; font-weight: 700;
  text-decoration: underline; text-underline-offset: 2px;
}
.sutra-external-link:hover { color: var(--accent-dark); }
.sutra-modal-step-card {
  margin-top: 6px; padding: 18px 4px 8px; border: 0; box-shadow: none;
}
.sutra-modal-loading,
.sutra-modal-error { padding: 28px 0; color: var(--ink-soft); font-size: 0.95rem; }
.sutra-modal-error { color: var(--red); }
#auth-mode-switch {
  display: flex; gap: 4px; background: var(--surface-soft);
  border: 1px solid var(--border); border-radius: 999px; padding: 3px; margin-bottom: 18px;
}
.auth-tab {
  flex: 1; border: none; background: transparent; cursor: pointer;
  font-family: inherit; font-size: 0.85rem; font-weight: 600;
  padding: 8px 0; border-radius: 999px; color: var(--ink-soft);
  transition: all 0.15s ease;
}
.auth-tab.active { background: var(--indigo); color: #fff; }
.auth-form label { display: block; font-size: 0.8rem; font-weight: 700; color: var(--ink-soft); margin: 12px 0 5px; }
.auth-form input {
  width: 100%; font-family: inherit; font-size: 1rem;
  padding: 12px 14px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--ink); outline: none;
  transition: border-color 0.15s ease;
}
.auth-form input:focus { border-color: var(--indigo); }
.auth-form .btn { width: 100%; margin-top: 18px; }
.auth-msg {
  margin-top: 12px; padding: 10px 13px; border-radius: var(--radius-sm);
  font-size: 0.88rem; font-weight: 600;
}
.auth-msg.err { background: var(--red-soft); color: var(--red); border: 1px solid #f0cdcd; }
.auth-msg.ok { background: var(--green-soft); color: var(--green); border: 1px solid #c5e6d0; }
.auth-note { margin-top: 14px; font-size: 0.78rem; color: var(--ink-soft); text-align: center; }

/* confirm modal */
.confirm-card { width: min(420px, calc(100vw - 40px)); text-align: left; }
.confirm-card h3 { margin-bottom: 8px; }
.confirm-card p { color: var(--ink-soft); font-size: 0.95rem; line-height: 1.5; margin-bottom: 22px; }
.confirm-actions { display: flex; justify-content: flex-end; gap: 10px; }

/* ---------------------------------- generic ---------------------------------- */
#view { margin-top: 14px; }

.hidden { display: none !important; }

.btn {
  font-family: inherit; font-size: 0.98rem; font-weight: 600;
  padding: 11px 22px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--surface);
  color: var(--ink); cursor: pointer;
  transition: transform 0.08s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:hover { box-shadow: var(--shadow); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-dark); }
.btn.indigo { background: var(--indigo); border-color: var(--indigo); color: #fff; }
.btn.indigo:hover { background: #4146a8; }
.btn.ghost { background: transparent; }
.btn.danger { background: var(--red); border-color: var(--red); color: #fff; }
.btn.danger:hover { background: #991b1b; }
.btn.lg { padding: 14px 30px; font-size: 1.05rem; }
.btn.sm { padding: 6px 14px; font-size: 0.85rem; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px;
}

.tag {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.3px;
  padding: 3px 9px; border-radius: 999px; text-transform: uppercase;
}
.tag.sanjna { background: var(--teal-soft); color: var(--teal); }
.tag.paribhasa { background: var(--indigo-soft); color: var(--indigo); }
.tag.atidesa { background: var(--accent-soft); color: var(--accent-dark); }
.tag.adhikara { background: #f3e6fa; color: #6b21a8; }
.tag.vidhi { background: #e2f0fa; color: #075985; }
.tag.other { background: var(--surface-soft); color: var(--ink-soft); }
.tag.plain { background: transparent; color: var(--ink-soft); border: 1px dashed var(--border); }

.code-badge {
  font-family: 'Noto Sans Mono', ui-monospace, monospace;
  font-size: 0.82rem; font-weight: 600; color: var(--ink-soft);
  background: var(--surface-soft); border: 1px solid var(--border);
  border-radius: 7px; padding: 3px 9px;
}

.dev-text { font-family: var(--font-dev); }

/* progress bars / meters */
.meter { display: flex; gap: 3px; }
.meter .seg { height: 6px; flex: 1; border-radius: 3px; background: var(--border); }
.meter .seg.on { background: var(--accent); }

.progress-row { display: flex; align-items: center; gap: 12px; }
.progress-row .bar { flex: 1; height: 8px; border-radius: 4px; background: var(--border); overflow: hidden; }
.progress-row .bar i { display: block; height: 100%; background: var(--accent); border-radius: 4px; transition: width 0.3s ease; }
.progress-row .pct { font-size: 0.8rem; font-weight: 700; color: var(--ink-soft); min-width: 38px; text-align: right; }

/* ---------------------------------- dashboard ---------------------------------- */
.hero { margin: 26px 0 26px; }
.hero h1 { font-size: 1.9rem; font-weight: 800; letter-spacing: -0.3px; line-height: 1.2; }
.hero h1 .dev-text { color: var(--accent); }
.hero p { color: var(--ink-soft); margin-top: 8px; max-width: 70ch; font-size: 1.02rem; }
.hero .dev-text { font-size: 1.25rem; color: var(--ink); }
.hero-cta { display: flex; align-items: center; gap: 14px; margin-top: 18px; flex-wrap: wrap; }
.hero-cta .hint { font-size: 0.82rem; color: var(--ink-soft); max-width: 42ch; line-height: 1.4; }

/* loading indicator */
#loading {
  position: fixed; inset: 0; z-index: 100; display: grid; place-items: center;
  background: rgba(250, 247, 242, 0.86); backdrop-filter: blur(3px);
}
#loading .box { text-align: center; }
.spinner {
  width: 34px; height: 34px; margin: 0 auto 12px; border-radius: 50%;
  border: 3px solid var(--border); border-top-color: var(--accent);
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
#loading .box p { color: var(--ink-soft); font-size: 0.9rem; font-weight: 600; }

.section-title {
  font-size: 0.78rem; font-weight: 800; letter-spacing: 1px; text-transform: uppercase;
  color: var(--ink-soft); margin: 26px 0 12px;
}

.group-legend { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 14px; font-size: 0.8rem; color: var(--ink-soft); }
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.legend-item .dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }

.gana-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 14px; }

.gana-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px; cursor: pointer;
  transition: transform 0.1s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  position: relative; overflow: hidden;
}
.gana-card:hover { transform: translateY(-2px); border-color: #d8cfbf; box-shadow: 0 8px 28px rgba(43,43,43,0.1); }
.gana-card .num { font-size: 0.75rem; font-weight: 800; color: var(--accent); letter-spacing: 1px; }
.gana-card h3 { font-family: var(--font-dev); font-size: 1.5rem; margin: 6px 0 4px; font-weight: 700; }
.gana-card .meta { font-size: 0.82rem; color: var(--ink-soft); margin-bottom: 12px; }
.gana-card .done-count { position: absolute; top: 14px; right: 14px; font-size: 0.75rem; font-weight: 800; color: var(--green); }
.gana-card.complete { border-color: #b7dcc3; }
.gana-card.complete .num { color: var(--green); }
.gana-card.current { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(180, 83, 9, 0.15); }
.gana-card.recommended { border-color: var(--accent); box-shadow: 0 4px 18px rgba(180, 83, 9, 0.18); }
.gana-card.recommended::after {
  content: 'START HERE'; position: absolute; top: 12px; right: 12px;
  font-size: 0.62rem; font-weight: 800; letter-spacing: 0.6px;
  color: #fff; background: var(--accent); border-radius: 999px; padding: 3px 9px;
}

/* ---------------------------------- gana view ---------------------------------- */
.crumb { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; color: var(--ink-soft); font-size: 0.9rem; }
.crumb button { background: none; border: none; color: var(--indigo); font-weight: 600; cursor: pointer; font-family: inherit; font-size: 0.9rem; }
.crumb button:hover { text-decoration: underline; }

.gana-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 6px; }
.gana-head h2 { font-family: var(--font-dev); font-size: 2rem; font-weight: 700; }
.gana-head .sub { color: var(--ink-soft); font-size: 0.95rem; }

.group-list { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }

.group-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 16px 20px;
  display: flex; align-items: center; gap: 16px; cursor: pointer;
  transition: transform 0.1s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.group-card:hover { transform: translateX(3px); border-color: #d8cfbf; }
.group-card.current { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(180, 83, 9, 0.14); }
.group-card.flash-highlight {
  border-color: var(--indigo);
  box-shadow: 0 0 0 4px rgba(76, 81, 191, 0.4);
  animation: flashPulse 0.9s ease-out;
}
@keyframes flashPulse {
  0% { box-shadow: 0 0 0 8px rgba(76, 81, 191, 0.55); }
  100% { box-shadow: 0 0 0 4px rgba(76, 81, 191, 0.4); }
}

.group-num {
  width: 46px; height: 46px; flex-shrink: 0; border-radius: 12px;
  background: var(--surface-soft); color: var(--ink-soft);
  display: grid; place-items: center; font-weight: 800; font-size: 1.1rem;
}
.group-card.done .group-num { background: var(--green-soft); color: var(--green); }
.group-card.current .group-num { background: var(--accent); color: #fff; }

.group-info { flex: 1; min-width: 0; }
.group-info h4 { font-size: 1rem; font-weight: 700; }
.next-tag {
  font-size: 0.62rem; font-weight: 800; letter-spacing: 0.5px;
  color: #fff; background: var(--accent); border-radius: 999px; padding: 2px 8px;
  vertical-align: 2px; margin-left: 4px;
}
.group-info .meta { font-size: 0.82rem; color: var(--ink-soft); margin-top: 3px; }
.group-info .meta b { color: var(--ink); }

.group-stages { display: flex; gap: 6px; flex-wrap: wrap; }
.stage-pill {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.3px;
  padding: 4px 10px; border-radius: 999px; text-transform: uppercase;
  background: var(--surface-soft); color: var(--ink); border: 1px solid var(--border);
}
.stage-pill.done { background: var(--green-soft); color: var(--green); border-color: #c5e6d0; }
.stage-pill.active { background: var(--indigo); color: #fff; border-color: var(--indigo); }
.stage-pill.locked { color: var(--ink-soft); opacity: 0.55; }

.group-arrow {
  flex-shrink: 0; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.4px;
  color: var(--indigo); background: var(--indigo-soft); border: 1px solid #cdd2f2;
  border-radius: 999px; padding: 7px 14px;
}
.group-card.done .group-arrow { color: var(--green); background: var(--green-soft); border-color: #c5e6d0; }
.group-card.current .group-arrow { color: #fff; background: var(--accent); border-color: var(--accent); }

.reset-group-btn {
  flex-shrink: 0; font-family: inherit; cursor: pointer;
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.3px;
  color: var(--ink-soft); background: var(--surface-soft);
  border: 1px solid var(--border); border-radius: 999px; padding: 6px 12px;
  transition: all 0.12s ease;
}
.reset-group-btn:hover { color: var(--red); border-color: var(--red); background: var(--red-soft); }

/* ---------------------------------- sutra list ---------------------------------- */
.topnav-btn {
  font-family: inherit; font-size: 0.82rem; font-weight: 700;
  padding: 7px 14px; border-radius: 999px; cursor: pointer;
  background: var(--surface); border: 1px solid var(--border);
  color: var(--ink); transition: all 0.15s ease;
}
.topnav-btn:hover { border-color: var(--accent); color: var(--accent-dark); background: var(--accent-soft); }

.sutra-total {
  display: inline-block;
  margin-top: 10px; padding: 6px 11px;
  color: var(--accent-dark); background: var(--accent-soft);
  border: 1px solid #f2d8b8; border-radius: 999px;
  font-size: 0.85rem; font-weight: 600; white-space: nowrap;
}
.sutra-total b { font-size: 1rem; font-weight: 800; }

/* ---------------------------------- unlock map ---------------------------------- */
.unlock-summary { margin: 18px 0 6px; color: var(--ink-soft); font-size: 0.95rem; }
.unlock-summary b { color: var(--accent-dark); font-size: 1.15rem; }
.unlock-list { display: flex; flex-direction: column; gap: 10px; }
.unlock-card {
  display: grid; grid-template-columns: 42px minmax(0, 1fr) auto; gap: 14px; align-items: center;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 16px 18px;
}
.unlock-rank { color: var(--accent); font-size: 1.1rem; font-weight: 800; text-align: center; }
.unlock-sutra { font-size: 1.35rem; font-weight: 700; line-height: 1.35; }
.unlock-main .step-kicker { margin-bottom: 5px; }
.unlock-main .step-iast { margin: 1px 0 8px; font-size: 0.9rem; }
.unlock-groups { display: flex; flex-wrap: wrap; gap: 6px; }
.unlock-group, .unlock-more {
  border: 1px solid #cdd2f2; border-radius: 999px; background: var(--indigo-soft); color: var(--indigo);
  padding: 4px 9px; font-family: inherit; font-size: 0.72rem; font-weight: 600;
}
.unlock-group { cursor: pointer; }
.unlock-group:hover { background: var(--indigo); color: #fff; }
.unlock-more { border-color: var(--border); background: var(--surface-soft); color: var(--ink-soft); }
.unlock-counts { display: flex; flex-direction: column; align-items: flex-end; gap: 2px; color: var(--ink-soft); font-size: 0.78rem; white-space: nowrap; }
.unlock-counts b { color: var(--ink); font-size: 0.95rem; }

.sutra-tree { display: flex; flex-direction: column; gap: 12px; }

.sutra-gana {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden;
}
.sutra-gana > summary {
  display: flex; align-items: baseline; gap: 10px; cursor: pointer;
  padding: 14px 18px; list-style: none; font-weight: 800;
  transition: background 0.12s ease;
}
.sutra-gana > summary::-webkit-details-marker { display: none; }
.sutra-gana > summary:hover { background: var(--surface-soft); }
.sutra-gana > summary .sg-gana {
  font-size: 0.78rem; font-weight: 800; letter-spacing: 1px;
  color: var(--accent); background: var(--accent-soft);
  border-radius: 999px; padding: 3px 10px;
}
.sutra-gana > summary .sg-display { font-size: 1.25rem; }
.sutra-gana > summary .sg-meta { margin-left: auto; font-size: 0.82rem; color: var(--ink-soft); font-weight: 600; }

.sutra-groups { display: flex; flex-direction: column; gap: 10px; padding: 4px 14px 14px; }

.sutra-group {
  background: var(--surface-soft); border: 1px solid var(--border);
  border-radius: var(--radius-sm); overflow: hidden;
}
.sutra-group > summary {
  display: flex; align-items: baseline; gap: 10px; cursor: pointer;
  padding: 10px 14px; list-style: none; font-weight: 700; font-size: 0.95rem;
  transition: background 0.12s ease;
}
.sutra-group > summary::-webkit-details-marker { display: none; }
.sutra-group > summary:hover { background: #ece5d8; }
.sutra-group > summary .sg-meta { margin-left: auto; font-size: 0.78rem; color: var(--ink-soft); font-weight: 600; }

.sutra-dhatus {
  display: flex; flex-wrap: wrap; gap: 6px;
  padding: 8px 14px 0; font-size: 0.9rem;
}
.sutra-dhatu {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 7px; padding: 3px 9px; font-size: 0.85rem; color: var(--ink);
}
.sutra-dhatu.muted { color: var(--ink-soft); border-style: dashed; }

.sutra-list { margin-top: 8px; border-top: 1px solid var(--border); }

.sutra-row {
  position: relative;
  background: var(--surface); border-bottom: 1px solid var(--border);
}
.sutra-row:last-child { border-bottom: none; }
.sutra-row.covered { opacity: 0.45; }
.sutra-row.covered:hover { opacity: 0.8; }
body.hide-sutra-covered .sutra-row.covered { display: none; }

.sutra-hdr {
  display: grid; grid-template-columns: 1fr auto; align-items: center;
  gap: 10px; padding: 9px 14px; cursor: pointer;
  transition: background 0.1s ease;
}
.sutra-hdr:hover { background: var(--accent-soft); }

.sutra-lhs { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; min-width: 0; }
.sutra-dev { font-family: var(--font-dev); font-size: 1.12rem; line-height: 1.4; }
.sutra-row .covered-tag {
  font-size: 0.62rem; font-weight: 800; letter-spacing: 0.5px;
  text-transform: uppercase; color: var(--ink-soft);
  background: var(--surface-soft); border: 1px solid var(--border);
  border-radius: 999px; padding: 2px 7px;
}
.sutra-chev { color: var(--ink-soft); font-size: 0.75rem; transition: transform 0.12s ease; }
.sutra-row.open .sutra-chev { transform: rotate(90deg); }

.sutra-meaning {
  padding: 4px 14px 8px;
  border-top: 1px dashed var(--border);
}

/* ---------------------------------- teach view ---------------------------------- */
.teach-progress { margin-bottom: 18px; }
.teach-progress .progress-row { margin-top: 8px; }
.teach-target {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  background: var(--indigo-soft); border: 1px solid #cdd2f2;
  border-radius: var(--radius-sm); padding: 10px 16px; margin-bottom: 16px;
  font-size: 0.92rem; color: var(--indigo);
}
.teach-target .word { font-family: var(--font-dev); font-weight: 700; font-size: 1.05rem; }

.step-card { padding: 26px 28px; position: relative; }
.step-kicker { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }

.step-sutra { font-family: var(--font-dev); font-size: 2.05rem; font-weight: 700; line-height: 1.4; margin: 6px 0 2px; }
.step-iast { color: var(--ink-soft); font-size: 1.05rem; font-style: italic; margin-bottom: 10px; }

.padaccheda { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.pc-token {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--surface-soft); border: 1px solid var(--border);
  border-radius: 8px; padding: 4px 10px; font-family: var(--font-dev); font-size: 1.02rem;
}
.pc-token .vb {
  font-family: var(--font-sans); font-size: 0.68rem; font-weight: 700; color: var(--ink-soft);
  background: var(--surface); border: 1px solid var(--border); border-radius: 5px; padding: 1px 5px;
}

.sampurna { margin: 10px 0 6px; font-size: 0.9rem; color: var(--ink-soft); }
.sampurna b { color: var(--ink); font-weight: 600; text-transform: uppercase; font-size: 0.75rem; letter-spacing: 0.5px; }

.meaning-primary {
  margin-top: 16px; padding: 18px 20px;
  background: var(--accent-soft); border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 1.12rem; line-height: 1.6;
}
.meaning-primary .src { display: block; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--accent-dark); margin-top: 6px; }

.meaning-extra { margin-top: 12px; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; }
.meaning-extra summary {
  cursor: pointer; padding: 12px 16px; font-size: 0.9rem; font-weight: 700;
  color: var(--ink-soft); list-style: none; display: flex; align-items: center; gap: 8px;
  background: var(--surface-soft);
}
.meaning-extra summary::-webkit-details-marker { display: none; }
.meaning-extra summary .chev { transition: transform 0.15s ease; font-size: 0.75rem; }
.meaning-extra[open] summary .chev { transform: rotate(90deg); }
.meaning-extra .body { padding: 12px 16px; font-size: 0.98rem; line-height: 1.65; color: var(--ink); overflow-x: auto; }
.meaning-extra .body .sa { font-family: var(--font-dev); }
.meaning-extra .body .sd { margin-top: 8px; font-size: 0.92rem; color: var(--ink-soft); }

/* ---------------------------- meaning markup ---------------------------- */
/* The JSON explanations contain a small legacy markup language. These
   classes give its semantic blocks a readable treatment inside .meaning-extra
   without allowing the source tags themselves into the DOM. */
.meaning-primary .markup-sutra-name,
.meaning-extra .markup-sutra-name {
  color: var(--accent-dark); font-weight: 700;
}
.markup-bold { font-weight: 700; }
.markup-italic { font-style: italic; }
.markup-underline { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 2px; }
.markup-sup { font-size: 0.72em; line-height: 0; }
.markup-quote { color: var(--indigo); }
.markup-example { font-style: italic; color: var(--teal); }
.markup-nonexample { color: var(--ink-soft); font-style: italic; }
.markup-highlight,
.markup-highlight-strong {
  background: #fff0bd; color: inherit; border-radius: 3px; padding: 1px 3px;
}
.markup-highlight-strong { font-weight: 700; background: #ffe39a; }
.markup-title {
  margin: 18px 0 8px; padding-bottom: 5px; border-bottom: 1px solid var(--border);
  color: var(--accent-dark); font-size: 1rem; line-height: 1.4;
}
.markup-light { color: var(--ink-soft); font-size: 0.9em; }
.markup-inline { color: var(--indigo); font-style: italic; }
.markup-inline-span { color: inherit; }
.markup-link { color: var(--indigo); text-decoration: underline; text-underline-offset: 2px; }
a.markup-link:hover { color: var(--accent-dark); }
.markup-sutra-ref,
.markup-source-ref {
  display: inline-block; color: var(--indigo); background: var(--indigo-soft);
  border: 1px solid #cdd2f2; border-radius: 5px; padding: 0 5px;
  font-size: 0.86em; font-weight: 700; text-decoration: none; white-space: nowrap;
}
.markup-sutra-ref:hover { background: var(--indigo); color: #fff; }
.markup-source-ref { color: var(--ink-soft); background: var(--surface-soft); border-color: var(--border); }
.markup-editorial {
  color: var(--ink-soft); background: var(--surface-soft); border-left: 3px solid var(--border);
  padding: 1px 5px; font-size: 0.92em; font-style: italic;
}
.markup-process,
.markup-technical,
.markup-gana {
  margin: 12px 0; padding: 12px 14px; border: 1px solid var(--border);
  border-radius: var(--radius-sm); background: var(--surface-soft);
  font-family: var(--font-dev); line-height: 1.7; overflow-x: auto;
}
.markup-process { border-left: 4px solid var(--accent); }
.markup-process-alt { border-left-color: var(--indigo); }
.markup-process .markup-sutra-name { font-family: var(--font-dev); }
.markup-note,
.markup-background,
.markup-source {
  display: block; margin: 12px 0; padding: 11px 14px; border-radius: var(--radius-sm);
}
.markup-note { background: #fff8e8; border: 1px solid #f2d8b8; }
.markup-background { background: var(--surface-soft); border: 1px solid var(--border); }
.markup-source {
  background: var(--indigo-soft); border: 1px solid #cdd2f2; border-left: 4px solid var(--indigo);
  color: var(--ink-soft); font-family: var(--font-dev); font-style: normal;
}
.markup-verse {
  margin: 12px 0; padding: 12px 18px; background: var(--accent-soft);
  border-left: 4px solid var(--accent); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-family: var(--font-dev); text-align: center; line-height: 1.9;
}
.markup-list { margin: 10px 0; padding-left: 4px; }
.markup-list-spaced { margin-top: 14px; margin-bottom: 14px; }
.markup-list > li {
  display: block; margin: 5px 0; padding-left: 12px; border-left: 2px solid var(--border);
}
.markup-list-spaced > li { margin: 10px 0; }
.markup-table {
  width: max-content; min-width: 70%; margin: 12px auto; border-collapse: collapse;
  font-family: var(--font-dev); font-size: 0.92rem; background: var(--surface);
}
.markup-table th,
.markup-table td { border: 1px solid var(--border); padding: 6px 10px; text-align: left; }
.markup-table th { background: var(--surface-soft); font-weight: 700; }
.markup-spacer { height: 10px; }

.step-actions { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 20px; flex-wrap: wrap; }
.step-actions .hint { font-size: 0.8rem; color: var(--ink-soft); }

.read-instruction {
  font-size: 0.85rem; color: var(--ink-soft); font-style: italic;
  margin-bottom: 14px; border-left: 3px solid var(--border); padding-left: 12px;
}

.recap-label { font-size: 0.72rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.8px; color: var(--ink-soft); margin: 18px 0 8px; }
.recap-chips { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }

.sibling-forms { margin-top: 6px; }
.sibling-row { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.sibling-box {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 10px 16px; min-width: 130px;
}
.sibling-box .dev-text { font-size: 1.15rem; font-weight: 700; color: var(--ink); }
.sibling-box .sib-label { font-size: 0.72rem; color: var(--ink-soft); margin-top: 2px; }

.sibling-banner {
  background: var(--indigo-soft); border: 1px solid #cdd2f2; border-radius: var(--radius-sm);
  padding: 10px 14px; margin-bottom: 14px; font-size: 0.9rem; color: var(--indigo);
}
.sibling-banner .dev-text { font-weight: 700; }

/* sticky continuation bar so the next action is always reachable */
.sticky-actions {
  position: sticky; bottom: 0; z-index: 40;
  display: flex; justify-content: flex-end; align-items: center; gap: 12px;
  margin-top: 16px; padding: 12px 18px;
  background: var(--paper);
  border: 1px solid var(--border); border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  box-shadow: 0 -4px 16px rgba(43, 43, 43, 0.08);
}
.sticky-actions .sticky-info { margin-right: auto; font-size: 0.82rem; color: var(--ink-soft); }

/* final reveal */
.reveal {
  text-align: center; padding: 40px 20px;
  background: linear-gradient(160deg, var(--accent-soft), #fff8ef);
  border-radius: var(--radius); border: 1px solid #f2d8b8;
}
.reveal .lbl { font-size: 0.8rem; font-weight: 800; text-transform: uppercase; letter-spacing: 1px; color: var(--accent-dark); }
.reveal .word { font-family: var(--font-dev); font-size: 3.2rem; font-weight: 700; margin: 10px 0 2px; color: var(--accent); }
.reveal .word-iast { color: var(--ink-soft); font-style: italic; margin-bottom: 8px; }
.reveal .word-gloss { color: var(--ink-soft); font-size: 0.98rem; margin-bottom: 10px; }
.reveal .word-gloss .dev-text { color: var(--ink); font-weight: 600; }
.reveal .steps-note { color: var(--ink-soft); font-size: 0.92rem; }

/* ---------------------------------- quiz / recall ---------------------------------- */
.quiz-card { padding: 26px 28px; }
.quiz-q .q-sutra { font-family: var(--font-dev); font-size: 1.7rem; font-weight: 700; margin: 8px 0; line-height: 1.4; }
.quiz-q .q-prompt { color: var(--ink-soft); font-size: 0.92rem; margin-bottom: 16px; }
.options { display: flex; flex-direction: column; gap: 10px; margin-top: 8px; }
.option {
  font-family: inherit; text-align: left; font-size: 1rem;
  padding: 14px 18px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--surface);
  cursor: pointer; transition: all 0.12s ease;
}
.option:hover { border-color: var(--indigo); background: var(--indigo-soft); }
.option:focus-visible { outline: 3px solid rgba(76, 81, 191, 0.4); outline-offset: 1px; }
.option.correct { border-color: var(--green); background: var(--green-soft); color: var(--green); font-weight: 700; }
.option.wrong { border-color: var(--red); background: var(--red-soft); color: var(--red); }
.option:disabled { cursor: default; opacity: 0.85; }
.option .dev-text { font-family: var(--font-dev); }
.option .num-key {
  display: inline-grid; place-items: center; width: 20px; height: 20px;
  border: 1px solid var(--border); border-radius: 5px; font-size: 0.7rem;
  color: var(--ink-soft); margin-right: 8px; vertical-align: 1px;
}
.option.correct .num-key { border-color: var(--green); color: var(--green); }

.feedback { margin-top: 16px; padding: 13px 16px; border-radius: var(--radius-sm); font-weight: 600; }
.feedback.good { background: var(--green-soft); color: var(--green); border: 1px solid #c5e6d0; }
.feedback.bad { background: var(--red-soft); color: var(--red); border: 1px solid #f0cdcd; }
.feedback .details { font-weight: 400; margin-top: 4px; color: var(--ink-soft); font-size: 0.92rem; }
.feedback .details .dev-text { font-family: var(--font-dev); font-weight: 600; color: var(--ink); }

.quiz-meta { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.quiz-score { font-size: 0.85rem; font-weight: 700; color: var(--ink-soft); }
.quiz-score b { color: var(--ink); }
.recall-count { font-size: 0.75rem; font-weight: 700; color: var(--ink-soft); background: var(--surface-soft); border: 1px solid var(--border); border-radius: 999px; padding: 2px 10px; }

/* ---------------------------------- sutra practice ---------------------------------- */
.practice-loading { color: var(--ink-soft); font-size: 0.9rem; padding: 12px 2px; }
.practice-context { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
.practice-dhatu { font-size: 1.05rem; color: var(--ink); }
.practice-dhatu .muted { color: var(--ink-soft); font-size: 0.9rem; }
.practice-target {
  background: var(--indigo-soft); color: var(--indigo); border: 1px solid #cdd2f2;
  border-radius: 999px; padding: 4px 12px; font-size: 0.82rem; font-weight: 600;
}
.practice-state { margin: 4px 0 16px; }
.practice-lbl { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--ink-soft); margin-bottom: 6px; }
.practice-state-box {
  font-family: var(--font-dev); font-size: 1.7rem; font-weight: 700;
  color: var(--ink); background: var(--surface-soft); border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); padding: 16px 20px; line-height: 1.5;
}
.practice-reveal { margin-top: 16px; border-top: 1px solid var(--border); padding-top: 14px; }
.practice-before-after {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  font-size: 1.25rem; font-weight: 700; margin-bottom: 12px;
}
.practice-arrow { color: var(--accent); font-size: 1.4rem; }
.practice-reveal .meaning-primary { margin-top: 0; }

/* ---------------------------------- exercise ---------------------------------- */
.ex-card { padding: 26px 28px; }
.ex-prompt { font-size: 0.92rem; color: var(--ink-soft); }
.ex-dhatu {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin: 10px 0 4px;
}
.ex-dhatu .root { font-family: var(--font-dev); font-size: 2.3rem; font-weight: 700; line-height: 1.05; }
.ex-dhatu .root-pair { display: flex; flex-direction: column; align-items: flex-start; }
.ex-dhatu .root-caption { font-size: 0.68rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-soft); margin-top: 2px; }
.ex-dhatu .artha { color: var(--ink-soft); font-size: 1.05rem; }
.ex-dhatu .artha .dev-text { font-family: var(--font-dev); color: var(--ink); }
.ex-target {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--indigo-soft); color: var(--indigo); border: 1px solid #cdd2f2;
  border-radius: 999px; padding: 6px 14px; font-size: 0.88rem; font-weight: 600;
  margin: 8px 0 18px;
}
.answer-row { display: flex; gap: 10px; margin-top: 6px; }
.answer-row input {
  flex: 1; font-family: var(--font-dev); font-size: 1.4rem; padding: 13px 18px;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--ink); outline: none;
  transition: border-color 0.15s ease;
}
.answer-row input:focus { border-color: var(--indigo); }
.answer-row input.ok { border-color: var(--green); background: var(--green-soft); }
.answer-row input.no { border-color: #f0c4c4; background: var(--surface); }
.input-hint { font-size: 0.78rem; color: var(--ink-soft); margin-top: 6px; }

/* ---------------------------------- completion ---------------------------------- */
.done-panel { text-align: center; padding: 48px 28px; }
.done-panel .big { font-size: 3rem; margin-bottom: 8px; }
.done-panel h2 { font-size: 1.6rem; margin-bottom: 8px; }
.done-panel p { color: var(--ink-soft); max-width: 460px; margin: 0 auto 20px; }
.done-panel .stats { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; margin-bottom: 24px; }
.stat-box { background: var(--surface-soft); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px 22px; min-width: 110px; }
.stat-box .n { font-size: 1.5rem; font-weight: 800; color: var(--accent); }
.stat-box .l { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--ink-soft); }

.fade-in { animation: fadeIn 0.18s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* keyboard hint footer */
.kbd-hint { text-align: center; color: var(--ink-soft); font-size: 0.75rem; margin-top: 40px; opacity: 0.8; }
kbd {
  font-family: ui-monospace, monospace; font-size: 0.72rem; background: var(--surface);
  border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 5px; padding: 1px 6px;
}

@media (max-width: 640px) {
  #topbar { align-items: flex-start; gap: 10px; }
  .brand-name { display: none; }
  #topbar-right { justify-content: flex-end; gap: 5px; flex-wrap: wrap; }
  .topnav-btn { padding: 6px 9px; font-size: 0.72rem; }
  .level-switch button { padding: 5px 8px; font-size: 0.7rem; }
  .user-chip { padding: 6px 9px; font-size: 0.72rem; }
  .unlock-card { grid-template-columns: 30px minmax(0, 1fr); padding: 14px; }
  .unlock-counts { grid-column: 2; align-items: flex-start; flex-direction: row; flex-wrap: wrap; gap: 8px; }
  .step-sutra { font-size: 1.5rem; }
  .ex-dhatu .root { font-size: 1.8rem; }
  .reveal .word { font-size: 2.4rem; }
  .gana-head h2 { font-size: 1.6rem; }
  .card { padding: 18px 16px; }
}