/* HT Salon working brief — light and dark, phone first, no build step. */

:root {
  --bg: #fbf9f7;
  --bg-raise: #ffffff;
  --bg-sunk: #f2eeea;
  --ink: #1c1a19;
  --ink-soft: #55504c;
  --ink-faint: #837c76;
  --line: #e2dbd4;
  --line-soft: #efe9e3;
  --accent: #8a5a3b;
  --accent-soft: #f3e7dd;
  --good: #2f6b4f;
  --good-soft: #e3f0e8;
  --warn: #9a5a13;
  --warn-soft: #fbeedd;
  --high: #a03a34;
  --high-soft: #f8e4e2;
  --shadow: 0 1px 2px rgba(28, 26, 25, .05), 0 8px 24px rgba(28, 26, 25, .05);
  --radius: 14px;
  --maxw: 62rem;
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) {
    --bg: #14120f;
    --bg-raise: #1e1b18;
    --bg-sunk: #100e0c;
    --ink: #f2ede8;
    --ink-soft: #bdb4ab;
    --ink-faint: #8e847b;
    --line: #332e29;
    --line-soft: #262220;
    --accent: #d9a175;
    --accent-soft: #2e241c;
    --good: #7dc09b;
    --good-soft: #1b2a22;
    --warn: #dda45c;
    --warn-soft: #2e2418;
    --high: #e0857e;
    --high-soft: #2e1c1a;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 28px rgba(0, 0, 0, .35);
    color-scheme: dark;
  }
}

html[data-theme="dark"] {
  --bg: #14120f;
  --bg-raise: #1e1b18;
  --bg-sunk: #100e0c;
  --ink: #f2ede8;
  --ink-soft: #bdb4ab;
  --ink-faint: #8e847b;
  --line: #332e29;
  --line-soft: #262220;
  --accent: #d9a175;
  --accent-soft: #2e241c;
  --good: #7dc09b;
  --good-soft: #1b2a22;
  --warn: #dda45c;
  --warn-soft: #2e2418;
  --high: #e0857e;
  --high-soft: #2e1c1a;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 28px rgba(0, 0, 0, .35);
  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.62 ui-serif, Georgia, "Iowan Old Style", "Times New Roman", serif;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.15rem;
}

/* ---------- reading progress ---------- */
.progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  z-index: 60;
  pointer-events: none;
}
.progress span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--accent);
  transition: width .1s linear;
}

/* ---------- masthead ---------- */
.masthead {
  background: var(--bg-raise);
  border-bottom: 1px solid var(--line);
  padding: 3rem 0 2.4rem;
  position: relative;
}
.eyebrow {
  margin: 0 0 .5rem;
  font: 600 .74rem/1 ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--accent);
}
.masthead h1 {
  margin: 0 0 .7rem;
  font-size: clamp(2.4rem, 8vw, 3.6rem);
  line-height: 1.02;
  letter-spacing: -.02em;
  font-weight: 600;
}
.lede {
  margin: 0 0 1.6rem;
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 44rem;
}
.meta {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.6rem;
  font: 400 .84rem/1.5 ui-sans-serif, system-ui, -apple-system, sans-serif;
  color: var(--ink-soft);
}
.meta li { max-width: 26rem; }
.meta span {
  display: block;
  font-weight: 600;
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.theme {
  position: absolute;
  top: 1.1rem;
  right: 1.15rem;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  background: var(--bg-sunk);
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .34rem .7rem;
  cursor: pointer;
  font: 600 .72rem/1 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: .04em;
}
.theme:hover { color: var(--ink); border-color: var(--ink-faint); }
.theme-dot {
  width: .62rem;
  height: .62rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--ink) 50%, transparent 50%);
  border: 1px solid var(--ink-faint);
}

/* ---------- contents ---------- */
.toc {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(150%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.toc-toggle {
  display: none;
  width: 100%;
  background: none;
  border: 0;
  color: var(--ink);
  padding: .85rem 0;
  font: 600 .82rem/1 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: .08em;
  text-transform: uppercase;
  text-align: left;
  cursor: pointer;
}
.chev {
  float: right;
  border: solid var(--ink-faint);
  border-width: 0 2px 2px 0;
  padding: 3px;
  transform: rotate(45deg) translateY(-3px);
  transition: transform .18s ease;
}
.toc-toggle[aria-expanded="true"] .chev { transform: rotate(-135deg) translateY(-1px); }

.toc ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0 1.15rem;
  margin: 0;
  padding: .6rem 0;
  font: 400 .82rem/1.9 ui-sans-serif, system-ui, sans-serif;
}
.toc a {
  color: var(--ink-faint);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 1px;
}
.toc a:hover { color: var(--ink); }
.toc a.on { color: var(--accent); border-bottom-color: var(--accent); }

/* ---------- sections ---------- */
main { padding-bottom: 4rem; }
section {
  padding: 3.2rem 0 .6rem;
  scroll-margin-top: 4.5rem;
  border-top: 1px solid var(--line-soft);
}
section:first-of-type { border-top: 0; }

h2 {
  font-size: clamp(1.55rem, 5vw, 2.05rem);
  line-height: 1.15;
  letter-spacing: -.015em;
  margin: 0 0 .9rem;
  font-weight: 600;
}
.num {
  display: block;
  font: 700 .72rem/1 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: .16em;
  color: var(--accent);
  margin-bottom: .45rem;
}
h3 {
  font: 600 1.03rem/1.35 ui-sans-serif, system-ui, -apple-system, sans-serif;
  margin: 0 0 .45rem;
  letter-spacing: -.005em;
}
h4 {
  font: 600 1rem/1.35 ui-sans-serif, system-ui, sans-serif;
  margin: 0 0 .4rem;
}
h3.sub {
  margin: 2.2rem 0 .9rem;
  font-size: .78rem;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
p { margin: 0 0 1rem; }
.section-lede {
  font-size: 1.03rem;
  color: var(--ink-soft);
  max-width: 44rem;
}
q { font-style: italic; }
b { font-weight: 600; }

/* ---------- cards / panels ---------- */
.grid {
  display: grid;
  gap: .85rem;
  margin: 1.4rem 0;
}
.cards { grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.card,
.panel {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.05rem 1.15rem;
  box-shadow: var(--shadow);
}
.card p:last-child,
.panel p:last-child,
.panel ul:last-child { margin-bottom: 0; }
.card p {
  font-size: .95rem;
  color: var(--ink-soft);
}
.two {
  display: grid;
  gap: .85rem;
  grid-template-columns: 1fr 1fr;
  margin: 1.4rem 0;
}
.panel.accent {
  border-color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
  background: var(--accent-soft);
  margin: 1.4rem 0;
}

.callout {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  margin: 1.6rem 0;
  box-shadow: var(--shadow);
}
.callout.warn { border-left-color: var(--warn); }
.callout p:last-child { margin-bottom: 0; }

.aside {
  font-size: .87rem;
  color: var(--ink-faint);
  border-top: 1px dashed var(--line);
  padding-top: .7rem;
  margin-top: .9rem;
}

/* ---------- lists ---------- */
.ticks {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
}
.ticks li {
  position: relative;
  padding-left: 1.35rem;
  margin-bottom: .6rem;
  font-size: .96rem;
  color: var(--ink-soft);
}
.ticks li::before {
  content: "";
  position: absolute;
  left: .12rem;
  top: .62em;
  width: .42rem;
  height: .42rem;
  border-radius: 50%;
  background: var(--accent);
}
.ticks.good li::before {
  background: none;
  border: solid var(--good);
  border-width: 0 2px 2px 0;
  width: .3rem;
  height: .55rem;
  border-radius: 0;
  top: .38em;
  transform: rotate(42deg);
}

.numbered {
  counter-reset: n;
  list-style: none;
  padding: 0;
  margin: 1.4rem 0;
}
.numbered > li {
  counter-increment: n;
  position: relative;
  padding-left: 2.9rem;
  margin-bottom: 1.5rem;
}
.numbered > li::before {
  content: counter(n);
  position: absolute;
  left: 0;
  top: -.1rem;
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font: 700 .85rem/1 ui-sans-serif, system-ui, sans-serif;
  border: 1px solid var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 30%, transparent);
}
.numbered p { color: var(--ink-soft); font-size: .97rem; margin-bottom: 0; }

.qs, .steps {
  padding-left: 1.3rem;
  margin: 1.3rem 0;
  color: var(--ink-soft);
}
.qs li, .steps li { margin-bottom: .7rem; font-size: .97rem; }
.qs::marker, .steps::marker { color: var(--accent); }

/* ---------- findings ---------- */
.findings {
  display: grid;
  gap: .8rem;
  margin: 1rem 0 1.5rem;
}
.finding {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem 1rem 1.25rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.finding::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 5px;
}
.sev-high::before { background: var(--high); }
.sev-med::before { background: var(--warn); }
.sev-low::before { background: var(--ink-faint); }
.finding p {
  margin: 0;
  font-size: .95rem;
  color: var(--ink-soft);
}

/* ---------- calculator ---------- */
.calc {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem;
  margin: 1.6rem 0;
  box-shadow: var(--shadow);
}
.calc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 1rem 1.3rem;
  margin: 1rem 0 1.3rem;
}
.calc label {
  display: block;
  font: 600 .74rem/1.4 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.calc output {
  float: right;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  text-transform: none;
  letter-spacing: 0;
  font-size: .84rem;
}
.calc select {
  width: 100%;
  margin-top: .4rem;
  padding: .5rem .55rem;
  border-radius: 9px;
  border: 1px solid var(--line);
  background: var(--bg-sunk);
  color: var(--ink);
  font: 400 .92rem/1.3 ui-sans-serif, system-ui, sans-serif;
}
.calc input[type="range"] {
  width: 100%;
  margin-top: .75rem;
  accent-color: var(--accent);
}
.calc-out {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
  gap: .6rem;
  border-top: 1px solid var(--line);
  padding-top: 1.1rem;
}
.stat {
  background: var(--bg-sunk);
  border-radius: 10px;
  padding: .7rem .8rem;
}
.stat-label {
  display: block;
  font: 600 .66rem/1.3 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: .25rem;
}
.stat b {
  font: 600 1.28rem/1.1 ui-sans-serif, system-ui, sans-serif;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}
.fineprint {
  font-size: .8rem;
  color: var(--ink-faint);
  margin: .9rem 0 0;
  line-height: 1.5;
}
.fineprint.tight { color: var(--warn); }

/* ---------- phases ---------- */
.phases { display: grid; gap: .9rem; margin: 1.4rem 0; }
.phase {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  box-shadow: var(--shadow);
}
.phase-head {
  display: flex;
  align-items: baseline;
  gap: .7rem;
  flex-wrap: wrap;
  margin-bottom: .35rem;
}
.phase-head h3 { margin: 0; }
.tag {
  font: 700 .66rem/1 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: .32rem .6rem;
}
.phase-goal {
  font-size: .9rem;
  color: var(--ink-faint);
  font-style: italic;
  margin-bottom: .85rem;
}
.phase p:last-child { margin-bottom: 0; }

/* ---------- risks ---------- */
.risks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: .8rem;
  margin: 1.4rem 0;
}
.risk {
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow);
}
.risk p { margin: 0; font-size: .93rem; color: var(--ink-soft); }
.pill {
  display: inline-block;
  font: 700 .63rem/1 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: .09em;
  text-transform: uppercase;
  border-radius: 999px;
  padding: .3rem .55rem;
  margin-right: .45rem;
  vertical-align: 1px;
}
.pill.high { background: var(--high-soft); color: var(--high); }
.pill.med { background: var(--warn-soft); color: var(--warn); }
.pill.low { background: var(--good-soft); color: var(--good); }

/* ---------- footer ---------- */
.foot {
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  font-size: .84rem;
  color: var(--ink-faint);
  line-height: 1.6;
}
.foot-note { color: var(--ink-soft); }

/* ---------- narrow ---------- */
@media (max-width: 720px) {
  body { font-size: 16px; }
  .two { grid-template-columns: 1fr; }
  .masthead { padding: 4rem 0 2rem; }
  .toc-toggle { display: block; }
  .toc ol {
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 0 0 .8rem;
  }
  .toc ol.open { display: flex; }
  .toc ol li { border-top: 1px solid var(--line-soft); }
  .toc ol a { display: block; padding: .55rem 0; font-size: .92rem; }
  .toc a.on { border-bottom-color: transparent; }
  .theme { top: .9rem; right: 1.15rem; }
  section { padding-top: 2.4rem; }
}

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

@media print {
  .toc, .progress, .theme { display: none; }
  body { background: #fff; color: #000; font-size: 11pt; }
  .card, .panel, .finding, .risk, .phase, .callout, .calc { break-inside: avoid; box-shadow: none; }
  section { break-before: auto; }
}