/* JPS Vocab Tutor — design tokens & base styles
 * Editorial-warm. Dark primary, light alternative.
 * One accent: warm tan oklch(0.72 0.14 70).
 */

:root {
  /* Type stacks (Tweaks-driven via data-type) */
  --serif: "Source Serif 4", "Source Serif Pro", "Iowan Old Style", Georgia, serif;
  --sans: "Inter", ui-sans-serif, -apple-system, "Helvetica Neue", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  /* Spacing / density */
  --d-1: 4px; --d-2: 8px; --d-3: 12px; --d-4: 16px; --d-5: 24px;
  --d-6: 32px; --d-7: 48px; --d-8: 64px; --d-9: 96px;

  /* Radii */
  --r-xs: 3px; --r-sm: 6px; --r-md: 10px; --r-lg: 16px;

  /* Accent — warm tan, single accent across the product */
  --accent: oklch(0.74 0.10 70);
  --accent-strong: oklch(0.66 0.13 60);
  --accent-soft: oklch(0.74 0.10 70 / 0.14);
  --accent-line: oklch(0.74 0.10 70 / 0.32);

  /* State colors (muted, not Bootstrap-ish) */
  --learning: oklch(0.74 0.10 70);
  --learning-soft: oklch(0.74 0.10 70 / 0.14);
  --learning-line: oklch(0.74 0.10 70 / 0.36);
  --mastered: oklch(0.72 0.07 165);
  --mastered-soft: oklch(0.72 0.07 165 / 0.14);
  --mastered-line: oklch(0.72 0.07 165 / 0.36);
  --saved: oklch(0.74 0.06 280);
  --saved-soft: oklch(0.70 0.04 70 / 0.10);
  --saved-line: oklch(0.70 0.04 70 / 0.28);
  --saved-fg: oklch(0.78 0.04 75);
  --locked: oklch(0.55 0.005 60);

  /* Animation */
  --ease-out: cubic-bezier(0.2, 0.7, 0.2, 1);

  /* ---- EJP family colors ---------------------------------------------
     Nouns (EJP1–3) dusty blue · Verbs (EJP4–6) burnt amber ·
     Adjectives (EJP7–9) muted plum · Pentatonic (EJP10) sage. */
  --ejp-noun:        oklch(0.66 0.06 245);
  --ejp-noun-soft:   oklch(0.66 0.06 245 / 0.14);
  --ejp-verb:        oklch(0.68 0.10 55);
  --ejp-verb-soft:   oklch(0.68 0.10 55 / 0.14);
  --ejp-adj:         oklch(0.62 0.07 320);
  --ejp-adj-soft:    oklch(0.62 0.07 320 / 0.14);
  --ejp-pent:        oklch(0.68 0.06 145);
  --ejp-pent-soft:   oklch(0.68 0.06 145 / 0.14);

  /* ---- Chord-context family tints (for .tag) -------------------------
     Major contexts warm yellow, minor cool blue, dom7 muted plum. */
  --ctx-major:       oklch(0.74 0.08 90);
  --ctx-major-soft:  oklch(0.74 0.08 90 / 0.14);
  --ctx-minor:       oklch(0.68 0.06 235);
  --ctx-minor-soft:  oklch(0.68 0.06 235 / 0.14);
  --ctx-dom:         oklch(0.64 0.07 320);
  --ctx-dom-soft:    oklch(0.64 0.07 320 / 0.14);

  /* ---- Pack level palette --------------------------------------------
     Beginner sage · Intermediate accent tan · Advanced ember/maroon. */
  --lvl-beginner:        oklch(0.68 0.07 145);
  --lvl-beginner-soft:   oklch(0.68 0.07 145 / 0.14);
  --lvl-beginner-line:   oklch(0.68 0.07 145 / 0.32);
  --lvl-intermediate:        var(--accent);
  --lvl-intermediate-soft:   var(--accent-soft);
  --lvl-intermediate-line:   var(--accent-line);
  --lvl-advanced:        oklch(0.58 0.10 30);
  --lvl-advanced-soft:   oklch(0.58 0.10 30 / 0.16);
  --lvl-advanced-line:   oklch(0.58 0.10 30 / 0.36);

  /* ---- Pack TYPE letter marks (A / T / P top-right of tile) ----------
     Subtle hue per type. Falls back to --fg-3 if any reads too noisy. */
  --type-artist:       oklch(0.72 0.06 70);   /* warm tan */
  --type-tune:         oklch(0.66 0.05 245);  /* dusty blue */
  --type-progression:  oklch(0.62 0.06 320);  /* muted plum */
}

/* DARK (primary) */
[data-mode="dark"] {
  --bg: oklch(0.16 0.012 60);              /* deep warm ink */
  --bg-1: oklch(0.20 0.012 60);            /* card */
  --bg-2: oklch(0.24 0.013 65);            /* raised */
  --bg-inset: oklch(0.13 0.010 55);        /* notation well */
  --line: oklch(1 0 0 / 0.08);
  --line-strong: oklch(1 0 0 / 0.16);
  --fg: oklch(0.96 0.008 80);
  --fg-1: oklch(0.84 0.010 75);            /* secondary */
  --fg-2: oklch(0.62 0.010 70);            /* tertiary */
  --fg-3: oklch(0.48 0.010 65);            /* muted */
  --notation-ink: oklch(0.92 0.008 80);
  --shadow: 0 1px 0 rgba(255,255,255,0.04) inset, 0 8px 28px rgba(0,0,0,0.35);
}

/* LIGHT (cream paper, ink) — bumped contrast for older readers */
[data-mode="light"] {
  --bg: oklch(0.96 0.014 80);              /* cream page */
  --bg-1: oklch(1.00 0 0);                 /* pure white card */
  --bg-2: oklch(0.92 0.016 80);
  --bg-inset: oklch(0.98 0.008 80);
  --line: oklch(0.20 0.012 60 / 0.16);
  --line-strong: oklch(0.20 0.012 60 / 0.32);
  --fg: oklch(0.14 0.012 60);              /* deeper ink */
  --fg-1: oklch(0.28 0.012 60);
  --fg-2: oklch(0.42 0.010 60);
  --fg-3: oklch(0.56 0.008 60);
  --notation-ink: oklch(0.12 0.012 60);
  --shadow: 0 1px 0 rgba(255,255,255,0.6) inset, 0 6px 22px rgba(40,30,15,0.10);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv02", "cv11";
  transition: background-color 240ms var(--ease-out), color 240ms var(--ease-out);
}

/* Density modifiers */
[data-density="airy"]    { --d-stack: 28px; --d-card: 28px; --d-row: 22px; }
[data-density="medium"]  { --d-stack: 20px; --d-card: 22px; --d-row: 16px; }
[data-density="compact"] { --d-stack: 14px; --d-card: 16px; --d-row: 12px; }

/* Type pairings (Tweaks-driven) */
[data-type="serif-grotesque"] {
  --serif: "Source Serif 4", "Source Serif Pro", Georgia, serif;
  --sans: "Inter", ui-sans-serif, system-ui, sans-serif;
}
[data-type="oldstyle-humanist"] {
  --serif: "EB Garamond", "Iowan Old Style", Georgia, serif;
  --sans: "Public Sans", "IBM Plex Sans", ui-sans-serif, sans-serif;
}
[data-type="display-mono"] {
  --serif: "Fraunces", "Source Serif 4", Georgia, serif;
  --sans: "IBM Plex Sans", ui-sans-serif, sans-serif;
}

/* Headings */
.h-display { font-family: var(--serif); font-weight: 500; letter-spacing: -0.01em; line-height: 1.05; }
.h-1 { font-family: var(--serif); font-weight: 500; letter-spacing: -0.012em; line-height: 1.1; font-size: 44px; }
.h-2 { font-family: var(--serif); font-weight: 500; letter-spacing: -0.01em; line-height: 1.15; font-size: 32px; }
.h-3 { font-family: var(--serif); font-weight: 500; letter-spacing: -0.005em; line-height: 1.2; font-size: 22px; }
.h-4 { font-family: var(--serif); font-weight: 500; line-height: 1.25; font-size: 18px; }
.eyebrow {
  font-family: var(--sans); font-size: 11px; font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--fg-2);
}
.mono { font-family: var(--mono); font-feature-settings: "ss01"; }
.serif { font-family: var(--serif); }

/* Reusable atoms */
.btn {
  appearance: none; border: none; cursor: pointer;
  font-family: var(--sans); font-size: 14px; font-weight: 500;
  padding: 10px 16px; border-radius: var(--r-sm);
  display: inline-flex; align-items: center; gap: 8px;
  transition: background-color 160ms var(--ease-out), color 160ms var(--ease-out), border-color 160ms;
  letter-spacing: 0.005em;
}
.btn-primary {
  background: var(--fg); color: var(--bg);
}
.btn-primary:hover { background: var(--accent-strong); color: var(--bg); }
.btn-ghost { background: transparent; color: var(--fg-1); border: 1px solid var(--line-strong); }
.btn-ghost:hover { color: var(--fg); border-color: var(--fg-2); }
.btn-quiet { background: transparent; color: var(--fg-1); padding: 8px 10px; }
.btn-quiet:hover { color: var(--fg); background: var(--bg-2); }
.btn-accent {
  background: var(--accent); color: oklch(0.18 0.012 60);
}
.btn-accent:hover { background: var(--accent-strong); color: oklch(0.96 0.008 80); }

.card {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}

.divider { height: 1px; background: var(--line); border: 0; margin: 0; }

.tag {
  display: inline-flex; align-items: center;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.02em;
  padding: 3px 8px; border-radius: var(--r-xs);
  background: var(--bg-2); color: var(--fg-1);
  border: 1px solid var(--line);
}

.pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--sans); font-size: 12px; font-weight: 500;
  padding: 4px 9px; border-radius: 999px;
  background: var(--bg-2); color: var(--fg-1);
  border: 1px solid var(--line);
}
.pill-dot { width: 6px; height: 6px; border-radius: 999px; background: var(--fg-2); }
.pill-learning .pill-dot { background: var(--learning); }
.pill-learning { color: var(--accent); border-color: var(--accent-line); background: var(--accent-soft); }
.pill-mastered .pill-dot { background: var(--mastered); }
.pill-mastered { color: var(--mastered); }
.pill-saved .pill-dot { background: var(--saved); }
.pill-locked .pill-dot { background: var(--locked); }

/* Focus */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ----------------------------------------------------------------
   Status buttons (.btn-status-*) — drop-in for #state-buttons row
   ---------------------------------------------------------------- */
.status-row {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
}
.btn-status {
  appearance: none; cursor: pointer;
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--sans); font-size: 13px; font-weight: 500;
  padding: 8px 14px; border-radius: 999px;
  background: var(--bg-1);
  color: var(--fg-1);
  border: 1px solid var(--line);
  transition: background-color 140ms var(--ease-out),
              color 140ms var(--ease-out),
              border-color 140ms var(--ease-out),
              transform 140ms var(--ease-out);
}
.btn-status:hover { color: var(--fg); border-color: var(--line-strong); }

/* SAVED — quieter neutral-warm */
.btn-status-saved.is-active {
  color: var(--saved-fg);
  background: var(--saved-soft);
  border-color: var(--saved-line);
}
.btn-status-saved.is-active .status-glyph { opacity: 1; }

/* LEARNING — warm accent (in-progress) */
.btn-status-learning.is-active {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: var(--accent-line);
}

/* MASTERED — muted green (completion) */
.btn-status-mastered.is-active {
  color: var(--mastered);
  background: var(--mastered-soft);
  border-color: var(--mastered-line);
}

/* Confirm pulse — fired briefly when a status is committed */
.btn-status.just-confirmed { animation: statusPulse 480ms var(--ease-out); }
@keyframes statusPulse {
  0%   { transform: scale(1); }
  35%  { transform: scale(1.045); }
  100% { transform: scale(1); }
}

/* Inline ✕ Clear chip — sits next to the active button */
.btn-status-clear {
  appearance: none; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px;
  border-radius: 999px;
  background: transparent;
  color: var(--fg-2);
  border: 1px solid var(--line);
  transition: color 120ms, border-color 120ms, background-color 120ms;
}
.btn-status-clear:hover { color: var(--fg); border-color: var(--line-strong); background: var(--bg-2); }

/* Feedback pill — animates in on commit, fades out */
.status-feedback {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--sans); font-size: 12px; font-weight: 500;
  padding: 4px 10px; border-radius: 999px;
  background: var(--bg-2); color: var(--fg-1);
  border: 1px solid var(--line);
  opacity: 0; transform: translateY(-2px);
  transition: opacity 220ms var(--ease-out), transform 220ms var(--ease-out);
  pointer-events: none;
}
.status-feedback.is-visible { opacity: 1; transform: translateY(0); }
.status-feedback .check {
  width: 12px; height: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px;
  background: var(--mastered);
  color: var(--bg);
}

/* ----------------------------------------------------------------
   Practice tracker — keys + tempos
   ---------------------------------------------------------------- */
.tracker-card {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 18px 20px;
}
.tracker-row { display: grid; grid-template-columns: 96px 1fr; gap: 18px; align-items: center; }
.tracker-row + .tracker-row { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); }
.tracker-label {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--fg-2);
}
.tracker-dots { display: flex; flex-wrap: wrap; gap: 6px; }
.tracker-dot {
  position: relative;
  width: 26px; height: 26px;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 10px;
  color: var(--fg-2);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  transition: color 120ms, border-color 120ms, background-color 120ms;
}
.tracker-dot:hover { color: var(--fg-1); border-color: var(--line-strong); }
.tracker-dot.is-done {
  color: var(--mastered);
  background: var(--mastered-soft);
  border-color: var(--mastered-line);
}
.tracker-summary {
  font-family: var(--mono); font-size: 11px;
  color: var(--fg-2);
  margin-top: 12px;
}

/* Subtle scrollbars */
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 6px; border: 2px solid transparent; background-clip: content-box; }
*::-webkit-scrollbar-thumb:hover { background: var(--fg-3); border: 2px solid transparent; background-clip: content-box; }

/* Selection */
::selection { background: var(--accent-soft); color: var(--fg); }

/* Link */
a { color: inherit; text-decoration: none; }
a.link { color: var(--fg-1); border-bottom: 1px solid var(--line-strong); transition: color 120ms, border-color 120ms; }
a.link:hover { color: var(--accent); border-bottom-color: var(--accent-line); }

/* Layout helpers */
.row { display: flex; }
.col { display: flex; flex-direction: column; }
.gap-2 { gap: 8px; } .gap-3 { gap: 12px; } .gap-4 { gap: 16px; } .gap-5 { gap: 24px; } .gap-6 { gap: 32px; }
.center { align-items: center; }
.between { justify-content: space-between; }
.muted { color: var(--fg-2); }
.muted-2 { color: var(--fg-3); }

/* Smooth fade-in for routed pages */
.page-fade { animation: fadeIn 220ms var(--ease-out); }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ====================================================================
   PHRASE TAGS — chord-context family tints + EJP family tints
   ==================================================================== */
.tag-ctx-major { color: var(--ctx-major); background: var(--ctx-major-soft); border-color: var(--ctx-major-soft); }
.tag-ctx-minor { color: var(--ctx-minor); background: var(--ctx-minor-soft); border-color: var(--ctx-minor-soft); }
.tag-ctx-dom   { color: var(--ctx-dom);   background: var(--ctx-dom-soft);   border-color: var(--ctx-dom-soft); }

.tag-ejp-noun { color: var(--ejp-noun); background: var(--ejp-noun-soft); border-color: var(--ejp-noun-soft); }
.tag-ejp-verb { color: var(--ejp-verb); background: var(--ejp-verb-soft); border-color: var(--ejp-verb-soft); }
.tag-ejp-adj  { color: var(--ejp-adj);  background: var(--ejp-adj-soft);  border-color: var(--ejp-adj-soft); }
.tag-ejp-pent { color: var(--ejp-pent); background: var(--ejp-pent-soft); border-color: var(--ejp-pent-soft); }

/* "Targets b7" line — small caps mono, accent-fg degree */
.targets-line {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em;
  color: var(--fg-2); text-transform: uppercase;
}
.targets-line .deg { color: var(--accent); font-weight: 500; text-transform: none; }

/* ====================================================================
   PACK LEVEL — colored pill + 2px ribbon on tile
   ==================================================================== */
.lvl-pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--sans); font-size: 11px; font-weight: 500;
  padding: 2px 9px; border-radius: 999px; letter-spacing: 0.02em;
}
.lvl-beginner    { color: var(--lvl-beginner);    background: var(--lvl-beginner-soft);    border: 1px solid var(--lvl-beginner-line); }
.lvl-intermediate{ color: var(--lvl-intermediate); background: var(--lvl-intermediate-soft); border: 1px solid var(--lvl-intermediate-line); }
.lvl-advanced    { color: var(--lvl-advanced);    background: var(--lvl-advanced-soft);    border: 1px solid var(--lvl-advanced-line); }

.lvl-ribbon {
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
}
.lvl-ribbon-beginner    { background: var(--lvl-beginner); }
.lvl-ribbon-intermediate{ background: var(--lvl-intermediate); }
.lvl-ribbon-advanced    { background: var(--lvl-advanced); }

/* ====================================================================
   PACK TYPE MARK — 18×18 monogram in top-right of pack tile
   Single letter (A / T / P), serif, 1px ring, type-hued
   ==================================================================== */
.type-mark {
  position: absolute; top: 12px; right: 12px;
  width: 18px; height: 18px; border-radius: 999px;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 11px; font-weight: 500; line-height: 1;
  letter-spacing: 0;
  color: var(--fg-3);
  border: 1px solid currentColor;
  opacity: 0.9;
  user-select: none;
  pointer-events: none;
}
.type-mark.type-artist      { color: var(--type-artist); }
.type-mark.type-tune        { color: var(--type-tune); }
.type-mark.type-progression { color: var(--type-progression); }

/* Hide letter-marker when not in 'letter' mode */
[data-pack-type-mark="ribbon"] .type-mark,
[data-pack-type-mark="off"]    .type-mark { display: none; }

/* Ribbon mode — recolor the level ribbon by pack TYPE instead.
   Level color moves to the pill only (already there). */
[data-pack-type-mark="ribbon"] .lvl-ribbon-beginner,
[data-pack-type-mark="ribbon"] .lvl-ribbon-intermediate,
[data-pack-type-mark="ribbon"] .lvl-ribbon-advanced { background: transparent; }
.lvl-ribbon-type-artist      { background: var(--type-artist); }
.lvl-ribbon-type-tune        { background: var(--type-tune); }
.lvl-ribbon-type-progression { background: var(--type-progression); }
[data-pack-type-mark="ribbon"] .lvl-ribbon { background: transparent !important; }
[data-pack-type-mark="ribbon"] .lvl-ribbon::before {
  content: ""; position: absolute; inset: 0;
}
[data-pack-type-mark="ribbon"] .lvl-ribbon[data-type="artist"]      { background: var(--type-artist) !important; }
[data-pack-type-mark="ribbon"] .lvl-ribbon[data-type="tune"]        { background: var(--type-tune) !important; }
[data-pack-type-mark="ribbon"] .lvl-ribbon[data-type="progression"] { background: var(--type-progression) !important; }

/* ====================================================================
   ARTIST MARK CLUSTER — for cross-artist (Tune / Progression) packs
   Stacked overlap of 3 marks + optional "+N" overflow chip
   ==================================================================== */
.artist-cluster {
  display: inline-flex; align-items: center; flex-shrink: 0;
}
.artist-cluster .artist-chip {
  width: 28px; height: 28px; border-radius: 999px;
  background: var(--bg-2); border: 2px solid var(--bg-1);
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 11px; font-weight: 500;
  color: var(--fg-1);
  box-shadow: var(--shadow);
}
.artist-cluster .artist-chip + .artist-chip { margin-left: -10px; }
.artist-cluster .artist-chip-overflow {
  background: transparent; color: var(--fg-2);
  font-family: var(--mono); font-size: 10px; font-weight: 500;
  border: 1px dashed var(--line-strong);
}

/* ====================================================================
   PACK SECTION HEADER (Artist / Tune / Progression)
   ==================================================================== */
.pack-section { margin-bottom: 56px; }
.pack-section + .pack-section { margin-top: 8px; }
.pack-section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  padding-bottom: 14px; margin-bottom: 22px;
  border-bottom: 1px solid var(--line);
}
.pack-section-head h2 {
  margin: 0; font-family: var(--serif); font-weight: 500;
  font-size: 22px; letter-spacing: -0.005em;
}
.pack-section-head .blurb {
  color: var(--fg-2); font-size: 14px; max-width: 540px;
  line-height: 1.55; margin: 6px 0 0;
}
.pack-section-head .count {
  font-family: var(--mono); font-size: 11px; color: var(--fg-3);
  letter-spacing: 0.04em; text-transform: uppercase;
}

/* ====================================================================
   MY STATS — stat cards, lists, harmonic bar, pack-progress rows
   ==================================================================== */
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.stat-card {
  background: var(--bg-1); border: 1px solid var(--line);
  border-radius: var(--r-md); padding: 22px 22px 20px;
  position: relative; overflow: hidden;
}
.stat-card .stat-eyebrow {
  font-family: var(--sans); font-size: 11px; font-weight: 500;
  letter-spacing: 0.10em; text-transform: uppercase; color: var(--fg-2);
}
.stat-card .stat-num {
  font-family: var(--serif); font-weight: 500; font-size: 44px;
  letter-spacing: -0.02em; line-height: 1; margin-top: 14px;
}
.stat-card .stat-sub {
  font-size: 12px; color: var(--fg-3); margin-top: 6px;
}
.stat-card.stat-mastered .stat-num  { color: var(--mastered); }
.stat-card.stat-learning .stat-num  { color: var(--accent); }
.stat-card.stat-saved .stat-num     { color: var(--saved-fg); }
.stat-card.stat-active .stat-num    { color: var(--fg); }

/* Two-column block: most-studied masters + harmonic focus */
.stats-pair {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
  margin-top: 32px;
}
.stats-block {
  background: var(--bg-1); border: 1px solid var(--line);
  border-radius: var(--r-md); padding: 24px;
}
.stats-block h3 {
  font-family: var(--serif); font-weight: 500; font-size: 18px;
  margin: 0 0 18px; letter-spacing: -0.005em;
}
.studied-row {
  display: grid; grid-template-columns: 36px 1fr auto; gap: 14px;
  align-items: center; padding: 10px 0;
  border-top: 1px solid var(--line);
}
.studied-row:first-of-type { border-top: 0; }
.studied-row .name { font-family: var(--serif); font-size: 15px; color: var(--fg); }
.studied-row .meta { font-size: 11px; color: var(--fg-3); margin-top: 2px; }
.studied-row .count {
  font-family: var(--mono); font-size: 12px; color: var(--fg-2);
}

/* Harmonic focus — labeled bars (editorial, not Mixpanel) */
.harm-row {
  display: grid; grid-template-columns: 130px 1fr 36px;
  gap: 14px; align-items: center; padding: 10px 0;
  border-top: 1px solid var(--line);
}
.harm-row:first-of-type { border-top: 0; }
.harm-row .label { font-size: 13px; color: var(--fg-1); }
.harm-row .bar-track {
  height: 6px; background: var(--bg-2);
  border-radius: 999px; overflow: hidden; position: relative;
}
.harm-row .bar-fill {
  height: 100%; background: var(--accent);
  border-radius: 999px;
  transition: width 360ms var(--ease-out);
}
.harm-row .pct {
  font-family: var(--mono); font-size: 11px; color: var(--fg-2);
  text-align: right;
}

/* Pack-progress rows */
.pp-row {
  display: grid; grid-template-columns: 36px 1fr 140px 70px;
  gap: 14px; align-items: center; padding: 14px 0;
  border-top: 1px solid var(--line);
  cursor: pointer; transition: color 120ms;
}
.pp-row:first-of-type { border-top: 0; }
.pp-row:hover { color: var(--accent); }
.pp-row .pp-title { font-family: var(--serif); font-size: 15px; }
.pp-row .pp-meta { font-size: 11px; color: var(--fg-3); margin-top: 2px; }
.pp-row .pp-bar-track {
  height: 6px; background: var(--bg-2); border-radius: 999px; overflow: hidden;
}
.pp-row .pp-bar-fill {
  height: 100%; background: var(--mastered); border-radius: 999px;
  transition: width 360ms var(--ease-out);
}
.pp-row .pp-pct {
  font-family: var(--mono); font-size: 12px; color: var(--fg-2);
  text-align: right;
}

/* Empty state for stats */
.stats-empty {
  text-align: center; padding: 64px 24px;
  background: var(--bg-1); border: 1px dashed var(--line-strong);
  border-radius: var(--r-md);
  color: var(--fg-2);
}

/* ====================================================================
   RESPONSIVE — iPad (≤1024) + Phone (≤640)
   Single-template strategy — every page responds via these queries.
   Breakpoints:
     • ≤1024px   tablet:  3-col → 2-col grids, side rails restack
     • ≤640px    phone:   single column everywhere, nav collapses
   ==================================================================== */

/* ---------- Tablet (iPad) ---------- */
@media (max-width: 1024px) {
  /* Top-level page padding tightens */
  .page, main.page { padding-left: 24px !important; padding-right: 24px !important; }

  /* Pack grid: 3 → 2 columns */
  .pack-grid,
  div[style*="repeat(3, 1fr)"] { grid-template-columns: repeat(2, 1fr) !important; }

  /* Phrase detail variants — collapse side rails to stacked */
  .phrase-grid-A,
  .phrase-grid-B,
  div[style*="grid-template-columns: 1fr 320px"],
  div[style*="grid-template-columns: 260px 1fr"],
  div[style*="grid-template-columns: minmax(0"] {
    grid-template-columns: 1fr !important;
  }

  /* Two-fr notation/audio side-by-side becomes stacked */
  div[style*="grid-template-columns: 2fr 1fr"] {
    grid-template-columns: 1fr !important;
  }

  /* Stats — 4 cards → 2x2 */
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-pair { grid-template-columns: 1fr; }

  /* Pack-progress 4-col → 3 (drop the % column) */
  .pp-row { grid-template-columns: 36px 1fr 120px; }
  .pp-row .pp-pct { display: none; }

  /* Pack hero — 1.6fr/1fr → stacked */
  .pack-hero { grid-template-columns: 1fr !important; gap: 24px !important; }
  /* Dashboard pair (recent + coming next) → stacked */
  .dash-pair { grid-template-columns: 1fr !important; }

  /* Phrase rows — drop the side-rail column */
  .pack-phrase-row { grid-template-columns: 44px 1fr auto !important; gap: 18px !important; }
  .pack-phrase-row > :nth-child(3) { display: none; }

  .h-display, .h-1 { font-size: 36px; }
  .h-2 { font-size: 28px; }
}

/* ---------- Phone ---------- */
@media (max-width: 640px) {
  .page, main.page { padding-left: 16px !important; padding-right: 16px !important; }

  /* Pack grid: single column */
  .pack-grid,
  div[style*="repeat(2, 1fr)"],
  div[style*="repeat(3, 1fr)"] { grid-template-columns: 1fr !important; }

  /* Stats: stack to single column */
  .stats-grid { grid-template-columns: 1fr; gap: 12px; }
  .stat-card { padding: 18px; }
  .stat-card .stat-num { font-size: 36px; }

  /* Topnav: hide secondary controls, condense nav into a horizontal scroll-strip */
  .topnav-secondary { display: none !important; }
  .topnav-inner { padding: 12px 16px !important; gap: 12px !important; }
  .topnav-brand-text { display: none !important; }
  .topnav-links {
    overflow-x: auto; flex-wrap: nowrap !important;
    scrollbar-width: none;
  }
  .topnav-links::-webkit-scrollbar { display: none; }
  .topnav-links button { white-space: nowrap; padding: 8px 10px !important; font-size: 13px !important; }

  /* Phrase detail: tighter notation well */
  .phrase-notation-well { padding: 18px 12px !important; }

  /* Pack hero - tighter spacing */
  .pack-hero { padding-bottom: 24px !important; margin-bottom: 28px !important; }
  /* Phrase rows on phone — collapse to two-line */
  .pack-phrase-row {
    grid-template-columns: 36px 1fr !important;
    padding: 14px 16px !important; gap: 12px !important;
  }
  .pack-phrase-row > :nth-child(3),
  .pack-phrase-row > :nth-child(4) { display: none; }

  /* Pack section heads stack */
  .pack-section-head { flex-direction: column; align-items: flex-start; gap: 6px; }

  /* Studied & harmonic rows tighten */
  .studied-row { grid-template-columns: 32px 1fr auto; gap: 10px; }
  .harm-row { grid-template-columns: 100px 1fr 32px; gap: 10px; }
  .harm-row .label { font-size: 12px; }
  .pp-row { grid-template-columns: 32px 1fr; }
  .pp-row .pp-bar-track { display: none; }

  /* Status row wraps cleanly */
  .status-row { gap: 6px; }
  .btn-status { padding: 8px 12px; font-size: 12px; }

  /* Filter bar wraps tightly */
  .filter-bar { gap: 12px; }

  /* Tracker — smaller dots */
  .tracker-row { grid-template-columns: 80px 1fr; gap: 12px; }
  .tracker-dot { width: 24px; height: 24px; font-size: 9.5px; }

  .h-display, .h-1 { font-size: 28px; }
  .h-2 { font-size: 22px; }
  .h-3 { font-size: 18px; }
}

/* ====================================================================
 * APPENDED FROM PREVIOUS BUILD — preserve so templates keep working.
 * Classes Claude Design's bundle didn't redefine but my Jinja
 * templates reference. Safe to deduplicate later if classes overlap.
 * ==================================================================== */

/* Page wrapper — both classes get the same desktop layout. The responsive
   @media rules at the top of this file override left/right padding at
   tablet/phone widths. */
.page,
.page-shell {
  max-width: 1280px;
  margin: 0 auto;
  padding: 40px 32px 96px;
}
.page.narrow,
.page-shell.narrow { max-width: 920px; }

/* Topnav — preserve my existing chrome */
.topnav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--bg) 85%, transparent);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.topnav__inner, .topnav-inner {
  max-width: 1280px; margin: 0 auto;
  padding: 14px 32px;
  display: flex; align-items: center; justify-content: space-between;
}
.topnav__logo, .topnav-brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--fg); font-family: var(--serif);
  font-size: 17px; font-weight: 500; letter-spacing: -0.005em;
}
.topnav__mark, .topnav-brand-mark {
  width: 26px; height: 26px; border-radius: 4px;
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  color: oklch(0.18 0.012 60);
  font-family: var(--serif); font-weight: 600; font-size: 15px;
  letter-spacing: -0.02em;
}
.topnav__navitem, .topnav-link {
  appearance: none; border: 0; background: transparent;
  font-family: var(--sans); font-size: 14px;
  padding: 8px 12px; border-radius: 6px;
  color: var(--fg-2);
  cursor: pointer; text-decoration: none;
}
.topnav__navitem:hover, .topnav-link:hover { color: var(--fg); }
.topnav__navitem.is-active, .topnav-link.is-active {
  color: var(--fg); font-weight: 500;
}
.topnav__avatar, .topnav-avatar {
  width: 30px; height: 30px; border-radius: 999px;
  background: var(--bg-2); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-weight: 500; font-size: 13px;
  color: var(--fg-1);
}
/* Group classes used by responsive selectors in the design CSS */
.topnav-links { display: flex; gap: 8px; align-items: center; }
.topnav-secondary { display: flex; align-items: center; gap: 12px; }

/* Theme toggle */
.theme-toggle {
  appearance: none; border: 1px solid var(--line);
  background: transparent; color: var(--fg-1);
  font-family: var(--sans); font-size: 12px;
  padding: 6px 10px; border-radius: var(--r-sm);
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
  letter-spacing: 0.04em;
}
.theme-toggle:hover { background: var(--bg-2); color: var(--fg); border-color: var(--line-strong); }
.theme-toggle__icon { width: 14px; height: 14px; }

/* Crumbs */
.crumbs {
  font-family: var(--sans); font-size: 13px; color: var(--fg-2);
  display: flex; gap: 8px; align-items: center; margin-bottom: 24px;
}
.crumbs a { color: var(--fg-1); }
.crumbs a:hover { color: var(--accent); }

/* Artist marks — old naming (used in my templates) */
.artist-mark {
  width: 36px; height: 36px; border-radius: 4px;
  background: var(--bg-2); color: var(--fg-1);
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-weight: 500; font-size: 14px;
  letter-spacing: 0.04em; border: 1px solid var(--line);
  flex-shrink: 0;
}
.artist-mark-xl {
  width: 88px; height: 88px; border-radius: 6px;
  background: var(--accent-soft); color: var(--accent);
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-weight: 500; font-size: 36px;
  letter-spacing: 0.04em; border: 1px solid var(--accent-line);
  margin: 12px 0;
}
.artist-mark-cluster {
  display: inline-flex; flex-shrink: 0;
}
.artist-mark-cluster .artist-mark {
  margin-left: -8px;
  border: 2px solid var(--bg-1);
  width: 32px; height: 32px;
  font-size: 12px;
}
.artist-mark-cluster .artist-mark:first-child { margin-left: 0; }
.artist-mark-cluster .artist-mark--more {
  background: var(--bg-2); color: var(--fg-2);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0;
}
.artist-mark-row {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: 8px;
}
.artist-mark-row .artist-mark {
  width: 38px; height: 38px; font-size: 14px;
  transition: transform 120ms var(--ease-out), border-color 120ms;
}
.artist-mark-row a.artist-mark:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  color: var(--accent);
}

/* "New" badge — preserved */
.badge-new {
  font-family: var(--sans); font-size: 10px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 3px 8px; border-radius: 999px;
  background: var(--accent); color: oklch(0.18 0.012 60);
}

/* Pack hero (pack detail page) */
.pack-hero {
  display: grid; grid-template-columns: 1.6fr 1fr; gap: 48px;
  background: var(--bg-1); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 36px;
  margin-bottom: 48px;
}
.pack-hero__copy { display: flex; flex-direction: column; gap: 16px; }
.pack-hero__artist {
  display: flex; flex-direction: column; align-items: flex-start;
  gap: 4px; padding-left: 36px; border-left: 1px solid var(--line);
}
.pack-blurb {
  font-family: var(--serif); font-size: 17px; line-height: 1.55;
  color: var(--fg-1); margin: 0; max-width: 600px;
}
.pack-meta {
  font-family: var(--sans); font-size: 14px; color: var(--fg-2);
}
.h-display em { font-style: italic; color: var(--fg-2); font-weight: 400; }

/* Pack phrases list (pack detail) */
.pack-phrases { margin-top: 24px; }
.pack-phrases > p { margin: 8px 0 24px; }
.phrase-list {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 4px;
}
.phrase-row {
  border: 1px solid var(--line); border-radius: var(--r-md);
  background: var(--bg-1); transition: background 160ms var(--ease-out),
                                       border-color 160ms;
}
.phrase-row:hover:not(.is-locked) {
  background: var(--bg-2); border-color: var(--line-strong);
}
.phrase-row.is-locked { opacity: 0.55; }
.phrase-row > a {
  display: grid; grid-template-columns: 56px 1fr auto;
  align-items: center; gap: 20px; padding: 18px 20px;
  color: inherit;
}
.phrase-row__index {
  font-family: var(--mono); color: var(--fg-3);
  font-size: 13px; letter-spacing: 0.08em;
}
.phrase-row__body { display: flex; flex-direction: column; gap: 6px; }
.phrase-row__meta {
  display: flex; gap: 10px; align-items: center;
  font-size: 13px; color: var(--fg-2); flex-wrap: wrap;
}
.phrase-row__meta .accent { color: var(--accent); }
.phrase-row__notation { display: flex; align-items: center; }

/* Locked next-pack card */
.pack-next { margin-top: 48px; }
.lock-card {
  display: grid; grid-template-columns: auto 1fr auto;
  gap: 18px; align-items: center;
  background: var(--bg-1); border: 1px dashed var(--line-strong);
  border-radius: var(--r-md); padding: 18px 24px;
}
.lock-card .eyebrow { display: block; margin-bottom: 4px; }
.lock-card strong { font-family: var(--serif); font-weight: 500; font-size: 16px; }
.lock-card p { margin: 4px 0 0; font-size: 13px; color: var(--fg-2); }
.icon-lock { font-size: 18px; color: var(--fg-2); }

/* Filter bar (browse packs) */
.filter-bar {
  display: flex; gap: 32px; flex-wrap: wrap;
  padding: 16px 0; margin-bottom: 32px;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.filter-bar fieldset {
  border: 0; padding: 0; margin: 0;
  display: flex; gap: 8px; align-items: center;
}
.filter-bar legend {
  font-family: var(--sans); font-size: 11px; font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase;
  margin-right: 8px;
}
.seg { display: inline-flex; gap: 2px; flex-wrap: wrap; }
.seg-btn {
  appearance: none; border: 1px solid var(--line);
  background: transparent; color: var(--fg-2);
  font-family: var(--sans); font-size: 13px;
  padding: 6px 12px; border-radius: var(--r-sm);
  cursor: pointer; text-decoration: none;
  transition: background 120ms, color 120ms, border-color 120ms;
}
.seg-btn:hover { color: var(--fg); border-color: var(--line-strong); }
.seg-btn.is-active {
  background: var(--accent-soft); color: var(--accent);
  border-color: var(--accent-line);
}

/* Pack grid */
.pack-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.pack-tile {
  position: relative;  /* anchor for .lvl-ribbon and .type-mark */
  display: flex; flex-direction: column; gap: 12px;
  background: var(--bg-1); border: 1px solid var(--line);
  border-radius: var(--r-md); padding: 20px;
  text-decoration: none; color: inherit;
  transition: background 160ms, border-color 160ms, transform 160ms;
}
.pack-tile:hover {
  background: var(--bg-2); border-color: var(--line-strong);
  transform: translateY(-1px);
}
.pack-tile__head {
  display: flex; align-items: center; justify-content: space-between;
}
.pack-tile h3 {
  margin: 0; font-size: 18px; line-height: 1.3;
  font-family: var(--serif); font-weight: 500;
}
.pack-tile__foot {
  display: flex; justify-content: space-between; align-items: baseline;
  font-size: 12px; padding-top: 8px;
  border-top: 1px solid var(--line);
}
.clamp-2 {
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; font-size: 13px; line-height: 1.45;
}

/* Notation thumbnail inside a phrase card */
.pack-tile__notation {
  display: flex; align-items: center; justify-content: center;
  width: 100%; height: 88px;
  background: var(--bg-inset);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  overflow: hidden;
  margin: 4px 0 8px;
}
.pack-tile__notation img {
  max-width: 100%; max-height: 80px;
  display: block;
}
[data-mode="dark"] .pack-tile__notation img {
  filter: invert(0.92) hue-rotate(180deg);
}

/* Notation well (phrase detail) */
.notation-well {
  background: var(--bg-inset); border: 1px solid var(--line);
  border-radius: var(--r-md); padding: 24px;
  display: flex; align-items: center; justify-content: center;
}
.notation-well img { max-width: 100%; height: auto; }
[data-mode="dark"] .notation-well img { filter: invert(0.92) hue-rotate(180deg); }

/* Resume hero (dashboard) */
.resume-hero {
  background: var(--bg-1); border: 1px solid var(--line);
  border-radius: var(--r-lg); padding: 36px;
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px;
  min-height: 280px; overflow: hidden;
}
.resume-hero__visual {
  position: relative; padding: 24px;
  background: linear-gradient(135deg, var(--bg-2), var(--bg-1) 70%);
  border-left: 1px solid var(--line);
  border-radius: var(--r-md);
  display: flex; flex-direction: column; justify-content: center;
}
.progress-bar {
  display: flex; gap: 4px; margin: 8px 0;
}
.progress-bar > div {
  flex: 1; height: 4px; border-radius: 2px;
  background: var(--line-strong);
  transition: background 200ms;
}
.progress-bar > div.is-mastered { background: var(--mastered); }
.progress-bar > div.is-learning { background: var(--accent); }

/* Old level-pill alias — keep working until templates migrate */
.level-pill {
  display: inline-flex; align-items: center;
  font-family: var(--sans); font-size: 11px;
  letter-spacing: 0.06em; text-transform: uppercase;
  padding: 3px 9px; border-radius: 999px;
  font-weight: 500;
  border: 1px solid transparent;
}
.level-pill[data-level="beginner"] {
  color: var(--lvl-beginner);
  background: var(--lvl-beginner-soft);
  border-color: var(--lvl-beginner-line);
}
.level-pill[data-level="intermediate"] {
  color: var(--lvl-intermediate);
  background: var(--lvl-intermediate-soft);
  border-color: var(--lvl-intermediate-line);
}
.level-pill[data-level="advanced"] {
  color: var(--lvl-advanced);
  background: var(--lvl-advanced-soft);
  border-color: var(--lvl-advanced-line);
}