/* Teorical — warm, quiet, typographic. Built to be read for long stretches. */

:root {
  --bg:        #12100e;
  --bg-raised: #1a1714;
  --bg-sunk:   #0d0c0a;
  --line:      #2e2924;
  --line-soft: #241f1b;
  --ink:       #e9e3d7;
  --ink-dim:   #a89f92;
  --ink-faint: #6f675c;
  --brass:     #d0a04c;
  --brass-dim: #8a6a2f;
  --sage:      #7fa877;
  --clay:      #cd7a5c;
  --violet:    #9b8bc4;
  --radius:    14px;
  --radius-sm: 9px;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Inter, Roboto, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Consolas, monospace;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 28px -12px rgba(0,0,0,.6);
  --maxw: 1180px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg:        #f6f1e7;
    --bg-raised: #fffdf8;
    --bg-sunk:   #ece5d8;
    --line:      #ded3c0;
    --line-soft: #e8dfce;
    --ink:       #22201c;
    --ink-dim:   #5d564c;
    --ink-faint: #8d8477;
    --brass:     #9a6f18;
    --brass-dim: #c0a163;
    --sage:      #4d7a45;
    --clay:      #b0512f;
    --violet:    #6a5aa0;
    --shadow: 0 1px 2px rgba(60,45,20,.07), 0 10px 30px -14px rgba(60,45,20,.24);
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--sans); font-size: 16px; line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; line-height: 1.18; margin: 0 0 .45em; letter-spacing: -.01em; }
h1 { font-size: clamp(1.9rem, 4.2vw, 2.9rem); }
h2 { font-size: clamp(1.35rem, 2.6vw, 1.8rem); }
h3 { font-size: 1.16rem; }
h4 { font-size: 1rem; font-family: var(--sans); font-weight: 650; letter-spacing: .01em; }
p { margin: 0 0 1em; }
a { color: var(--brass); text-decoration-color: color-mix(in srgb, var(--brass) 40%, transparent); text-underline-offset: 3px; }
button { font: inherit; color: inherit; }
kbd {
  font-family: var(--mono); font-size: .72em; padding: .1em .38em; border-radius: 4px;
  background: color-mix(in srgb, var(--ink) 10%, transparent);
  border: 1px solid var(--line); color: var(--ink-dim);
}
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 8px; top: 8px; background: var(--bg-raised); padding: 8px 14px; z-index: 99; border-radius: 8px; }

/* ------------------------------------------------------------ chrome */
.topbar {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; gap: 22px;
  padding: 11px clamp(14px, 3vw, 32px);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--line-soft);
}
.brand { display: flex; align-items: center; gap: 9px; text-decoration: none; color: var(--ink); }
.brand-mark { font-size: 25px; line-height: 1; color: var(--brass); transform: translateY(-1px); }
.brand-text { font-family: var(--serif); font-size: 1.22rem; font-weight: 600; letter-spacing: .01em; }
.nav { display: flex; gap: 3px; margin-left: auto; flex-wrap: wrap; }
.nav a {
  padding: 7px 13px; border-radius: 999px; text-decoration: none;
  color: var(--ink-dim); font-size: .9rem; font-weight: 500; white-space: nowrap;
}
.nav a:hover { color: var(--ink); background: var(--bg-raised); }
.nav a.on { color: var(--bg); background: var(--brass); font-weight: 600; }
.sound-toggle {
  background: transparent; border: 1px solid var(--line); color: var(--ink-dim);
  padding: 6px 12px; border-radius: 999px; cursor: pointer; font-size: .82rem; white-space: nowrap;
}
.sound-toggle:hover { color: var(--ink); border-color: var(--brass-dim); }
.sound-toggle.off { opacity: .55; text-decoration: line-through; }

main { min-height: 70vh; }
.view { max-width: var(--maxw); margin: 0 auto; padding: clamp(26px, 5vw, 58px) clamp(14px, 3vw, 32px) 90px; }
.foot { border-top: 1px solid var(--line-soft); padding: 26px clamp(14px,3vw,32px); color: var(--ink-faint); font-size: .86rem; }
.foot p { max-width: var(--maxw); margin: 0 auto; }

/* ------------------------------------------------------------- hero */
.hero { max-width: 780px; margin-bottom: 40px; }
.hero.narrow, .prose.narrow { max-width: 720px; }
.eyebrow {
  font-size: .74rem; text-transform: uppercase; letter-spacing: .14em;
  color: var(--brass); font-weight: 650; margin-bottom: .6em;
}
.lede { font-size: 1.09rem; color: var(--ink-dim); max-width: 66ch; }
.sub { color: var(--ink-dim); font-size: .94rem; max-width: 70ch; margin-top: -.3em; }

/* ------------------------------------------------------------ tiles */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(255px, 1fr)); gap: 14px; margin-bottom: 34px; }
.tile {
  display: flex; flex-direction: column; align-items: flex-start; gap: 5px;
  text-align: left; background: var(--bg-raised); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px 22px 18px; cursor: pointer;
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.tile:hover { transform: translateY(-2px); border-color: var(--brass-dim); box-shadow: var(--shadow); }
.t-eyebrow { font-size: .72rem; text-transform: uppercase; letter-spacing: .12em; color: var(--ink-faint); font-weight: 650; }
.t-title { font-family: var(--serif); font-size: 1.32rem; font-weight: 600; }
.t-sub { color: var(--ink-dim); font-size: .88rem; }
.t-go { margin-top: 9px; color: var(--brass); font-size: .86rem; font-weight: 600; }
.primary-tile { background: linear-gradient(155deg, color-mix(in srgb, var(--brass) 20%, var(--bg-raised)), var(--bg-raised)); border-color: var(--brass-dim); }
.primary-tile .t-eyebrow { color: var(--brass); }

/* ------------------------------------------------------------ stats */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(112px, 1fr)); gap: 10px; margin-bottom: 40px; }
.stat { background: var(--bg-sunk); border: 1px solid var(--line-soft); border-radius: var(--radius-sm); padding: 14px 16px; }
.stat b { display: block; font-family: var(--serif); font-size: 1.7rem; font-weight: 600; line-height: 1.1; }
.stat span { font-size: .76rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: .07em; }

.block { margin-bottom: 48px; }
.block > h2 { margin-bottom: .3em; }
.row-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }

/* --------------------------------------------------------- buttons */
.btn {
  border: 1px solid var(--line); background: var(--bg-raised); color: var(--ink);
  padding: 9px 17px; border-radius: 999px; cursor: pointer; font-size: .9rem; font-weight: 550;
  transition: .15s ease; display: inline-flex; align-items: center; gap: 7px;
}
.btn:hover { border-color: var(--brass-dim); }
.btn.primary { background: var(--brass); color: #17130c; border-color: var(--brass); font-weight: 650; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--clay); border-color: color-mix(in srgb, var(--clay) 40%, transparent); background: transparent; }
.btn:disabled { opacity: .5; cursor: default; }

/* ------------------------------------------------------- skill grid */
.skillgrid { display: grid; gap: 22px; margin-top: 20px; }
.sg-group h4 { color: var(--ink-faint); text-transform: uppercase; letter-spacing: .1em; font-size: .72rem; margin-bottom: 9px; }
.sg-items { display: grid; grid-template-columns: repeat(auto-fill, minmax(215px, 1fr)); gap: 8px; }
.sg-item {
  text-align: left; background: var(--bg-raised); border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm); padding: 11px 13px; cursor: pointer; display: grid; gap: 6px;
}
.sg-item:hover { border-color: var(--brass-dim); }
.sg-name { font-size: .89rem; font-weight: 560; }
.sg-bar { display: block; height: 3px; background: var(--line); border-radius: 2px; overflow: hidden; }
.sg-bar i { display: block; height: 100%; background: var(--ink-faint); }
.sg-item.strong .sg-bar i { background: var(--sage); }
.sg-item.ok .sg-bar i { background: var(--brass); }
.sg-item.weak .sg-bar i { background: var(--clay); }
.sg-meta { font-size: .74rem; color: var(--ink-faint); }
.sg-item.untouched { opacity: .68; }

/* ------------------------------------------------------ stage cards */
.stage-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(275px, 1fr)); gap: 13px; margin-top: 18px; }
.stage-card {
  text-align: left; background: var(--bg-raised); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px 20px; cursor: pointer;
}
.stage-card:hover { border-color: var(--brass-dim); }
.sc-top { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.sc-count { font-family: var(--mono); font-size: .78rem; color: var(--ink-faint); }
.sc-sub { color: var(--brass); font-size: .82rem; margin: -.3em 0 .7em; }
.sc-blurb { color: var(--ink-dim); font-size: .87rem; }
.sc-bar { height: 3px; background: var(--line); border-radius: 2px; overflow: hidden; margin-top: 12px; }
.sc-bar i { display: block; height: 100%; background: var(--brass); }

/* ------------------------------------------------------- method grid */
.method { border-top: 1px solid var(--line-soft); padding-top: 34px; }
.method-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(238px, 1fr)); gap: 24px; margin-top: 18px; }
.method-grid h4 { color: var(--brass); margin-bottom: .35em; }
.method-grid p { color: var(--ink-dim); font-size: .89rem; margin: 0; }

/* ---------------------------------------------------------- lessons */
.lesson-stages { display: grid; gap: 46px; }
.lstage-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 14px; border-bottom: 1px solid var(--line); padding-bottom: 12px; margin-bottom: 12px; }
.lstage-head h2 { margin: 0; }
.lstage-blurb { color: var(--ink-dim); max-width: 72ch; font-size: .93rem; }
.lesson-list { display: grid; gap: 5px; margin-top: 16px; }
.lesson-row {
  display: grid; grid-template-columns: 34px 1fr 24px; align-items: center; gap: 12px;
  background: var(--bg-raised); border: 1px solid var(--line-soft); border-radius: var(--radius-sm);
  padding: 12px 15px; cursor: pointer; text-align: left;
}
.lesson-row:hover { border-color: var(--brass-dim); }
.lr-num { font-family: var(--mono); font-size: .8rem; color: var(--ink-faint); }
.lr-title { display: block; font-weight: 560; font-size: .98rem; }
.lr-meta { display: block; font-size: .77rem; color: var(--ink-faint); }
.lr-tick { color: var(--sage); font-size: 1rem; text-align: right; }
.lesson-row.done .lr-title { color: var(--ink-dim); }

.crumbs { font-size: .82rem; color: var(--ink-faint); margin-bottom: 22px; }
.crumbs i { margin: 0 7px; font-style: normal; }
.lesson { max-width: 730px; margin: 0 auto; }
.prose { font-size: 1.03rem; }
.prose h3 { margin-top: 1.7em; }
.prose h4 { margin-top: 1.7em; color: var(--brass); font-size: .95rem; text-transform: uppercase; letter-spacing: .07em; }
.prose ul, .prose ol { padding-left: 1.25em; margin: 0 0 1.2em; }
.prose li { margin-bottom: .5em; }
.prose strong { color: var(--ink); font-weight: 640; }
.prose em { font-style: italic; }
.callout {
  border-left: 2px solid var(--brass); background: var(--bg-sunk);
  padding: 14px 18px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.6em 0; font-size: .96rem; color: var(--ink-dim);
}
.callout strong { color: var(--brass); }
ol.proto { counter-reset: p; list-style: none; padding-left: 0; }
ol.proto li { counter-increment: p; padding-left: 38px; position: relative; margin-bottom: .8em; }
ol.proto li::before {
  content: counter(p); position: absolute; left: 0; top: 1px;
  width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center;
  background: var(--bg-sunk); border: 1px solid var(--line); font-size: .76rem;
  font-family: var(--mono); color: var(--brass);
}
.task-card {
  margin: 34px 0; padding: 20px 22px; border: 1px solid var(--brass-dim);
  border-radius: var(--radius); background: color-mix(in srgb, var(--brass) 7%, transparent);
}
.task-card h4 { color: var(--brass); text-transform: uppercase; letter-spacing: .09em; font-size: .74rem; }
.task-card p { margin: 0; font-size: .98rem; }
.lesson-drills { margin: 30px 0; }
.ld-row { display: flex; gap: 8px; flex-wrap: wrap; }
.lesson-foot { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; align-items: center; margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line); }
.lf-nav { display: flex; gap: 8px; flex-wrap: wrap; }

/* ------------------------------------------------------ ref tables */
.ref-table { width: 100%; border-collapse: collapse; margin: 1.2em 0; font-size: .89rem; }
.ref-table.wide { font-size: .84rem; }
.ref-table th, .ref-table td { text-align: left; padding: 8px 11px; border-bottom: 1px solid var(--line-soft); }
.ref-table thead th { color: var(--ink-faint); font-size: .74rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 650; border-bottom-color: var(--line); }
.ref-table tbody tr:hover { background: var(--bg-raised); }
.ref-table .rn { display: block; font-family: var(--mono); font-size: .8em; color: var(--brass); }
.block > div { overflow-x: auto; }
.two-col { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 0 30px; }
.ref-fb { overflow-x: auto; padding-bottom: 8px; }
.ref-fb svg { min-width: 760px; }

/* ------------------------------------------------------ drill cards */
.drill-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(258px, 1fr)); gap: 11px; margin-top: 16px; }
.drill-card { text-align: left; background: var(--bg-raised); border: 1px solid var(--line); border-radius: var(--radius); padding: 17px 19px; cursor: pointer; }
.drill-card:hover { border-color: var(--brass-dim); }
.drill-card h3 { font-size: 1.03rem; margin-bottom: .3em; }
.drill-card p { color: var(--ink-dim); font-size: .85rem; margin: 0; }
.dc-meta { margin-top: 10px !important; font-size: .75rem !important; color: var(--ink-faint) !important; font-family: var(--mono); }

/* ---------------------------------------------------------- runner */
.session-view { max-width: 900px; }
.drill { background: var(--bg-raised); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.drill-top { padding: 14px 20px 0; }
.drill-bar { height: 3px; background: var(--line); border-radius: 2px; overflow: hidden; }
.drill-bar i { display: block; height: 100%; background: var(--brass); transition: width .3s ease; }
.drill-meta { display: flex; justify-content: space-between; font-size: .76rem; color: var(--ink-faint); margin-top: 9px; text-transform: uppercase; letter-spacing: .08em; }
.drill-body { padding: 8px 20px 4px; }
.drill-q { font-family: var(--serif); font-size: clamp(1.15rem, 2.6vw, 1.5rem); text-align: center; margin: 14px 0 18px; }
.drill-stage { display: grid; place-items: center; min-height: 130px; }
.drill-stage svg { max-width: 100%; height: auto; }
.prompt-note { color: var(--ink-dim); text-align: center; font-size: .95rem; }
.big-prompt { display: grid; place-items: center; gap: 4px; padding: 14px 0; }
.bp-rn, .bp-deg { font-family: var(--serif); font-size: clamp(2.4rem, 8vw, 3.8rem); color: var(--brass); line-height: 1; }
.bp-key { color: var(--ink-dim); font-size: .95rem; }
.drill-answers { margin: 20px 0 4px; }
.choices { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 9px; }
.choice {
  display: flex; align-items: center; gap: 10px; background: var(--bg-sunk);
  border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 13px 15px;
  cursor: pointer; font-size: .96rem; text-align: left; transition: .13s ease;
}
.choice:hover:not(:disabled) { border-color: var(--brass); background: var(--bg-raised); }
.choice.is-right { border-color: var(--sage); background: color-mix(in srgb, var(--sage) 15%, transparent); }
.choice.is-wrong { border-color: var(--clay); background: color-mix(in srgb, var(--clay) 15%, transparent); }
.choice:disabled { cursor: default; }
.fb-wrap { overflow-x: auto; padding-bottom: 6px; }
.fb-wrap svg { min-width: 560px; }
.drill-fb { min-height: 44px; padding: 10px 0 4px; font-size: .92rem; color: var(--ink-dim); }
.drill-fb.good strong { color: var(--sage); }
.drill-fb.bad strong { color: var(--clay); }
.drill-foot { display: flex; gap: 9px; align-items: center; padding: 12px 20px 16px; border-top: 1px solid var(--line-soft); }
.drill-foot .dr-next { margin-left: auto; }

.done-card { background: var(--bg-raised); border: 1px solid var(--line); border-radius: var(--radius); padding: 34px; text-align: center; }
.done-card h2 { font-size: clamp(3rem, 12vw, 4.6rem); margin: 0; color: var(--brass); }
.done-card .pct { font-size: .38em; color: var(--ink-faint); }
.done-sub { color: var(--ink-dim); font-size: .9rem; }
.done-table { width: 100%; max-width: 430px; margin: 22px auto; border-collapse: collapse; font-size: .86rem; text-align: left; }
.done-table td { padding: 6px 8px; border-bottom: 1px solid var(--line-soft); }
.mini-bar { height: 3px; background: var(--line); border-radius: 2px; overflow: hidden; width: 74px; }
.mini-bar i { display: block; height: 100%; background: var(--brass); }
.done-tip { max-width: 560px; margin: 20px auto; color: var(--ink-dim); font-size: .92rem; text-align: left; padding: 14px 18px; background: var(--bg-sunk); border-radius: var(--radius-sm); border-left: 2px solid var(--brass); }
.done-tip strong { color: var(--brass); }
.done-actions { display: flex; gap: 10px; justify-content: center; margin-top: 22px; flex-wrap: wrap; }

/* --------------------------------------------------------- notation */
.staff { display: block; overflow: visible; }
.stf-line, .stf-bar { stroke: var(--ink-dim); stroke-width: 1; }
.stf-bar { stroke-width: 1.6; }
.stf-head { fill: var(--ink); }
.stf-head.hollow { fill: none; stroke: var(--ink); stroke-width: 2.1; }
.stf-stem { stroke: var(--ink); stroke-width: 1.7; }
.stf-flag { fill: var(--ink); }
.stf-clef, .stf-acc { fill: var(--ink); }
.stf-8, .stf-time { fill: var(--ink); font-family: var(--serif); text-anchor: middle; }
.stf-label { fill: var(--brass); font-family: var(--mono); font-size: 13px; }
.mel-staff { margin-top: 6px; }

/* -------------------------------------------------------- fretboard */
.fb { display: block; overflow: visible; }
.fb-board { fill: color-mix(in srgb, var(--brass) 7%, var(--bg-sunk)); }
.fb-fret { stroke: var(--ink-faint); stroke-width: 1.4; }
.fb-nut { stroke: var(--ink); stroke-width: 4; stroke-linecap: round; }
.fb-string { stroke: var(--ink-dim); }
.fb-dot { fill: color-mix(in srgb, var(--ink) 16%, transparent); }
.fb-strlabel, .fb-fretnum { fill: var(--ink-faint); font-family: var(--mono); font-size: 11px; text-anchor: middle; }
.fb-fretnum.on { fill: var(--ink-dim); }
.fb-mute { fill: var(--clay); font-size: 15px; text-anchor: middle; }
.fb-hit { fill: transparent; cursor: pointer; }
.fb-live .fb-hit:hover { fill: color-mix(in srgb, var(--brass) 26%, transparent); }
.fb-hit:focus-visible { fill: color-mix(in srgb, var(--brass) 30%, transparent); outline: none; }
.fb-mk-bg { fill: var(--brass); }
.fb-mk-tx { fill: #17130c; font-family: var(--sans); font-size: 10.5px; font-weight: 650; text-anchor: middle; }
.fb-marker.ok .fb-mk-bg { fill: var(--sage); }
.fb-marker.bad .fb-mk-bg { fill: var(--clay); }
.fb-marker.hint .fb-mk-bg { fill: none; stroke: var(--brass); stroke-width: 1.6; stroke-dasharray: 3 3; }
.fb-marker.hint .fb-mk-tx { fill: var(--brass); }
.fb-marker.given .fb-mk-bg { fill: var(--violet); }
.fb-marker.sharp .fb-mk-bg { fill: color-mix(in srgb, var(--brass) 45%, var(--bg-sunk)); }
.fb-marker.sharp .fb-mk-tx { fill: var(--ink); }

.cbox { width: 96px; height: auto; }
.cb-line { stroke: var(--ink-faint); stroke-width: 1; }
.cb-nut { stroke: var(--ink); stroke-width: 3; }
.cb-dot { fill: var(--brass); }
.cb-open { fill: none; stroke: var(--ink-dim); stroke-width: 1.4; }
.cb-x { fill: var(--ink-faint); font-size: 11px; text-anchor: middle; }
.cb-base, .cb-label { fill: var(--ink-faint); font-family: var(--mono); font-size: 10px; text-anchor: middle; }

/* ------------------------------------------------------------- lab */
.lab-head { max-width: 760px; margin-bottom: 26px; }
.lab-controls { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; padding: 13px 16px; background: var(--bg-sunk); border: 1px solid var(--line-soft); border-radius: var(--radius); margin-bottom: 22px; }
.fld { display: flex; align-items: center; gap: 8px; font-size: .85rem; color: var(--ink-dim); }
.fld select, .fld input[type=range] { background: var(--bg-raised); border: 1px solid var(--line); color: var(--ink); border-radius: 8px; padding: 6px 9px; font: inherit; font-size: .87rem; }
.fld em { font-family: var(--mono); font-style: normal; color: var(--brass); font-size: .8rem; min-width: 26px; }
.lab-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 26px; }
@media (max-width: 900px) { .lab-grid { grid-template-columns: 1fr; } }
.prog-strip { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 10px; min-height: 60px; }
.prog-cell {
  position: relative; flex: 0 0 auto; width: 128px; background: var(--bg-raised);
  border: 1px solid var(--line); border-top-width: 3px; border-radius: var(--radius-sm);
  padding: 10px 8px 8px; text-align: center; cursor: pointer;
}
.prog-cell:hover { border-color: var(--brass-dim); }
.pc-rn { font-family: var(--serif); font-size: 1.24rem; color: var(--brass); line-height: 1.1; }
.pc-name { font-size: .74rem; color: var(--ink-faint); margin-bottom: 4px; }
.pc-fn { font-size: .66rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: .06em; }
.pc-del { position: absolute; top: 3px; right: 5px; background: none; border: 0; color: var(--ink-faint); cursor: pointer; font-size: 1rem; line-height: 1; }
.pc-del:hover { color: var(--clay); }
.fn-tonic { border-top-color: var(--sage); }
.fn-predominant { border-top-color: var(--brass); }
.fn-dominant { border-top-color: var(--clay); }
.fn-applied-dominant { border-top-color: var(--violet); }
.empty { color: var(--ink-faint); font-size: .9rem; max-width: 60ch; }
.lab-staff { margin: 18px 0 26px; overflow-x: auto; }
.pal-group { margin-bottom: 20px; }
.pal-group h4 { color: var(--ink-faint); text-transform: uppercase; letter-spacing: .09em; font-size: .7rem; margin-bottom: 8px; }
.pal-row, .suggest { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  display: grid; gap: 1px; background: var(--bg-raised); border: 1px solid var(--line);
  border-left-width: 3px; border-radius: 8px; padding: 7px 11px; cursor: pointer; text-align: left;
}
.chip:hover { border-color: var(--brass); background: var(--bg-sunk); }
.chip-rn { font-family: var(--serif); font-size: .96rem; color: var(--brass); }
.chip-nm { font-size: .68rem; color: var(--ink-faint); }
.chip.fn-tonic { border-left-color: var(--sage); }
.chip.fn-predominant { border-left-color: var(--brass); }
.chip.fn-dominant { border-left-color: var(--clay); }
.chip.fn-applied-dominant { border-left-color: var(--violet); }
.lab-side h3 { font-size: .8rem; text-transform: uppercase; letter-spacing: .1em; color: var(--ink-faint); margin: 22px 0 10px; font-family: var(--sans); }
.lab-side h3:first-child { margin-top: 0; }
.analysis { font-size: .86rem; }
.fnline { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; margin-bottom: 12px; }
.fnline i { color: var(--ink-faint); font-style: normal; }
.fn-tag { width: 21px; height: 21px; display: grid; place-items: center; border-radius: 5px; font-size: .72rem; font-weight: 700; background: var(--bg-sunk); border: 1px solid var(--line); }
.fn-tag.fn-tonic { color: var(--sage); border-color: var(--sage); }
.fn-tag.fn-predominant { color: var(--brass); border-color: var(--brass-dim); }
.fn-tag.fn-dominant { color: var(--clay); border-color: var(--clay); }
.fn-tag.fn-applied-dominant { color: var(--violet); border-color: var(--violet); }
.note { display: grid; grid-template-columns: 17px 1fr; gap: 8px; color: var(--ink-dim); margin-bottom: 10px; line-height: 1.5; }
.note span { width: 16px; height: 16px; border-radius: 4px; display: grid; place-items: center; font-size: .68rem; font-weight: 700; margin-top: 3px; }
.note.good span { background: color-mix(in srgb, var(--sage) 26%, transparent); color: var(--sage); }
.note.warn span { background: color-mix(in srgb, var(--clay) 26%, transparent); color: var(--clay); }
.note.info span { background: var(--bg-sunk); color: var(--ink-faint); }
.tiny { font-size: .76rem; color: var(--ink-faint); }
.tiny.warn { color: var(--clay); }
.saved-item { display: block; width: 100%; text-align: left; background: var(--bg-sunk); border: 1px solid var(--line-soft); border-radius: 7px; padding: 7px 10px; margin-bottom: 5px; cursor: pointer; font-size: .78rem; color: var(--ink-dim); font-family: var(--mono); }
.saved-item:hover { border-color: var(--brass-dim); color: var(--ink); }

/* -------------------------------------------------------- progress */
.heat { display: grid; grid-template-columns: repeat(28, 1fr); gap: 4px; max-width: 560px; margin-top: 16px; }
.heat i { aspect-ratio: 1; border-radius: 3px; background: var(--bg-sunk); border: 1px solid var(--line-soft); }
.heat .h1 { background: color-mix(in srgb, var(--brass) 28%, var(--bg-sunk)); }
.heat .h2 { background: color-mix(in srgb, var(--brass) 50%, var(--bg-sunk)); }
.heat .h3 { background: color-mix(in srgb, var(--brass) 74%, var(--bg-sunk)); }
.heat .h4 { background: var(--brass); }
.io { width: 100%; margin-top: 14px; background: var(--bg-sunk); border: 1px solid var(--line); border-radius: var(--radius-sm); color: var(--ink-dim); padding: 11px 13px; font-family: var(--mono); font-size: .74rem; resize: vertical; }

@media (max-width: 620px) {
  .nav { order: 3; width: 100%; margin-left: 0; justify-content: flex-start; overflow-x: auto; }
  .nav a { padding: 6px 10px; font-size: .84rem; }
  .topbar { flex-wrap: wrap; gap: 10px 14px; }
  .sound-toggle { margin-left: auto; }
  .heat { grid-template-columns: repeat(14, 1fr); }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; scroll-behavior: auto; } }