/* Heads Up Hair and Beauty Salon — stylesheet
   Palette & roles from research/design-language.md.
   Two-role tokens kept separate per steering (text-on-band vs card surface). */

:root {
  --ground: #FBF8F3;
  --surface: #FFFFFF;
  --surface-border: #E3DACB;
  --ink: #16322D;
  --muted: #4F615C;
  --brand: #0F6B5C;
  --brand-hover: #0C5748;
  --brand-text: #0B5A4D;
  --accent-dark: #E9C46A; /* accent text on always-dark bands — fixed */
  --sun: #E9C46A;         /* highlight fill — dark text on it, never white */
  --ink-fixed: #16322D;   /* text on sun — fixed */
  --on-brand: #FFFFFF;    /* text on brand fills — fixed */
  --cream: #F2EEE4;       /* text on always-dark bands — fixed */
  --band: #16322D;        /* always-dark header/hero/footer/CTA/planner */
  --band-muted: #BFCFC9;  /* muted text on always-dark bands */
  --band-surface: #0F2420;/* chip/inset surface inside a band */

  --radius: 12px;
  --radius-sm: 8px;
  --maxw: 1080px;
  --gap: 1.25rem;

  --font-head: "Marcellus", Georgia, serif;
  --font-body: "Hind", system-ui, -apple-system, sans-serif;
}

[data-theme="dark"] {
  --ground: #0E1A17;
  --surface: #18302B;
  --surface-border: #29453E;
  --ink: #F2EEE4;
  --muted: #C5D3CE;
  --brand: #0F6B5C;
  --brand-hover: #138571;
  --brand-text: #7FE0C8;
  --band: #081210;
  --band-muted: #BFCFC9;
  --band-surface: #0C1D19;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--ink);
  background: var(--ground);
  line-height: 1.6;
  overflow-wrap: anywhere;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 400;
  line-height: 1.2;
  color: var(--ink);
  margin: 0 0 .5em;
}

h1 { font-size: clamp(1.9rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1rem; }

a { color: var(--brand-text); }

img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 1.1rem;
}

/* Section spacing — never combine padding:X 0 with .container (bug #4) */
.section { padding-block: clamp(2.5rem, 6vw, 4.5rem); }

.eyebrow {
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: .78rem;
  color: var(--brand-text);
  margin: 0 0 .5rem;
}

.muted { color: var(--muted); }

.lead { font-size: 1.12rem; color: var(--muted); max-width: 60ch; }

/* ---------- Comb-tooth divider ---------- */
.comb {
  height: 10px;
  background-image: repeating-linear-gradient(
    90deg,
    var(--sun) 0 3px,
    transparent 3px 9px
  );
  opacity: .9;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1;
  padding: .8rem 1.25rem;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}

.btn--primary { background: var(--brand); color: var(--on-brand); border-color: var(--brand); }
.btn--primary:hover { background: var(--brand-hover); border-color: var(--brand-hover); color: var(--on-brand); }

.btn--sun { background: var(--sun); color: var(--ink-fixed); border-color: var(--sun); }
.btn--sun:hover { background: #DDB84E; border-color: #DDB84E; color: var(--ink-fixed); }

.btn--ghost { background: transparent; color: var(--brand-text); border-color: var(--brand-text); }
.btn--ghost:hover { background: var(--brand-text); color: var(--ground); }

.btn-row { display: flex; flex-wrap: wrap; gap: .75rem; }

/* ---------- Chips ---------- */
.chip {
  display: inline-block;
  font-size: .78rem;
  font-weight: 500;
  padding: .25rem .6rem;
  border-radius: 999px;
  background: #EEF4F1;
  color: var(--brand-text);          /* dark-enough on tint for ≥4.5:1 (bug #17) */
  border: 1px solid var(--surface-border);
}
[data-theme="dark"] .chip {
  background: var(--band-surface);
  color: var(--brand-text);
  border-color: var(--surface-border);
}

/* ---------- Header ---------- */
.site-header {
  background: var(--band);
  color: var(--cream);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header .container {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-block: .7rem;
  flex-wrap: wrap;
}
.brand { display: flex; flex-direction: column; text-decoration: none; margin-right: auto; }
.brand strong {
  font-family: var(--font-head);
  font-weight: 400;
  font-size: 1.15rem;
  color: var(--cream);
  line-height: 1.15;
  overflow-wrap: anywhere;
}
.brand .brand-sub {
  font-size: .72rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--accent-dark);          /* sub-label uses fixed accent (steering) */
}

.site-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .25rem 1rem;
  margin: 0;
  padding: 0;
}
.site-nav a {
  color: var(--cream);
  text-decoration: none;
  font-weight: 500;
  padding: .3rem .1rem;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] { border-bottom-color: var(--accent-dark); color: var(--cream); }

.header-actions { display: flex; align-items: center; gap: .5rem; }

/* header CTA + ghost buttons live on a dark band → force band-safe colours (bug #6) */
.site-header a.btn--primary { background: var(--brand); color: var(--on-brand); border-color: var(--brand); }
.site-header a.btn--primary:hover { background: var(--brand-hover); border-color: var(--brand-hover); color: var(--on-brand); }
.site-header a.btn--ghost,
.site-header button.btn--ghost { color: var(--accent-dark); border-color: var(--accent-dark); background: transparent; }
.site-header a.btn--ghost:hover,
.site-header button.btn--ghost:hover { background: var(--accent-dark); color: var(--ink-fixed); }

/* Theme toggle */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: 999px;
  border: 2px solid var(--accent-dark);
  background: transparent;
  color: var(--accent-dark);
  cursor: pointer;
  padding: 0;
}
.theme-toggle:hover { background: var(--accent-dark); color: var(--ink-fixed); }
.theme-toggle svg { width: 20px; height: 20px; }
.theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* ---------- Hero / bands (always dark) ---------- */
.hero, .band {
  background: var(--band);
  color: var(--cream);
}
.hero .eyebrow, .band .eyebrow { color: var(--accent-dark); }
.hero h1, .hero h2, .hero h3, .hero h4,
.band h1, .band h2, .band h3, .band h4 { color: var(--cream); }
.hero p, .band p, .hero li, .band li { color: var(--cream); }
.hero .muted, .band .muted,
.hero .lead, .band .lead { color: var(--band-muted); }
.hero a:not(.btn), .band a:not(.btn) { color: var(--accent-dark); }

/* buttons inside hero/band keep their own colours (bug #6) */
.hero a.btn--primary, .band a.btn--primary { color: var(--on-brand); border-color: var(--brand); background: var(--brand); }
.hero a.btn--primary:hover, .band a.btn--primary:hover { background: var(--brand-hover); border-color: var(--brand-hover); color: var(--on-brand); }
.hero a.btn--sun, .band a.btn--sun { color: var(--ink-fixed); background: var(--sun); border-color: var(--sun); }
.hero a.btn--sun:hover, .band a.btn--sun:hover { color: var(--ink-fixed); }
.hero a.btn--ghost, .hero button.btn--ghost,
.band a.btn--ghost, .band button.btn--ghost { color: var(--accent-dark); border-color: var(--accent-dark); background: transparent; }
.hero a.btn--ghost:hover, .hero button.btn--ghost:hover,
.band a.btn--ghost:hover, .band button.btn--ghost:hover { background: var(--accent-dark); color: var(--ink-fixed); }

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}
.hero-media { position: relative; }
.hero-media img {
  width: 100%;
  height: 100%;
  max-height: 420px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid rgba(233,196,106,.25);
}
.img-note {
  font-size: .72rem;
  color: var(--band-muted);
  margin-top: .4rem;
}
.img-note.muted { color: var(--muted); }

/* ---------- Proof strip ---------- */
.proof {
  background: var(--surface);
  border-top: 1px solid var(--surface-border);
  border-bottom: 1px solid var(--surface-border);
}
.proof .container {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 2rem;
  align-items: center;
  justify-content: center;
  padding-block: 1rem;
  text-align: center;
}
.proof strong { font-family: var(--font-head); color: var(--brand-text); }

/* ---------- Cards / grids ---------- */
.grid { display: grid; gap: var(--gap); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid > * { min-width: 0; }

.card {
  background: var(--surface);
  border: 1px solid var(--surface-border);   /* visible border in light (bug #16) */
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.card__media { aspect-ratio: 4 / 3; overflow: hidden; }
.card__media img { width: 100%; height: 100%; object-fit: cover; }
.card__body { padding: 1.1rem; }
.card__body h3 { margin-bottom: .35rem; }
.card__body p { margin-bottom: 0; color: var(--muted); }

/* ---------- House-call callout ---------- */
.callout {
  background: var(--sun);
  color: var(--ink-fixed);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 4vw, 2.5rem);
}
.callout h2, .callout h3, .callout p { color: var(--ink-fixed); }
.callout .eyebrow { color: var(--ink-fixed); }
/* ghost button inside a sun band uses ink-fixed border/text (bug #8) */
.callout a.btn--ghost, .callout button.btn--ghost { color: var(--ink-fixed); border-color: var(--ink-fixed); background: transparent; }
.callout a.btn--ghost:hover, .callout button.btn--ghost:hover { background: var(--ink-fixed); color: var(--sun); }

/* ---------- Find-us / NAP ---------- */
.findus { display: grid; grid-template-columns: 1fr 1fr; gap: var(--gap); }
.findus > * { min-width: 0; }
dl.nap { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: .4rem 1rem; }
dl.nap dt { font-weight: 600; color: var(--ink); min-width: 0; }
dl.nap dd { margin: 0; color: var(--muted); min-width: 0; overflow-wrap: anywhere; }
/* NAP inside a band */
.band dl.nap dt { color: var(--cream); }
.band dl.nap dd { color: var(--band-muted); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--band);
  color: var(--cream);
}
.site-footer h1, .site-footer h2, .site-footer h3, .site-footer h4 { color: var(--cream); }
.site-footer p, .site-footer li { color: var(--band-muted); }
.site-footer a:not(.btn) { color: var(--accent-dark); text-decoration: none; }
.site-footer a:not(.btn):hover { text-decoration: underline; }
.site-footer .eyebrow { color: var(--accent-dark); }
.site-footer a.btn--ghost, .site-footer button.btn--ghost { color: var(--accent-dark); border-color: var(--accent-dark); background: transparent; }
.site-footer a.btn--ghost:hover, .site-footer button.btn--ghost:hover { background: var(--accent-dark); color: var(--ink-fixed); }
.site-footer a.btn--primary { color: var(--on-brand); background: var(--brand); border-color: var(--brand); }

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
  padding-block: clamp(2.5rem, 5vw, 3.5rem);
}
.footer-grid > * { min-width: 0; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .4rem; }

.footer-bottom {
  border-top: 1px solid rgba(233,196,106,.2);
  padding-block: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.5rem;
  justify-content: space-between;
  font-size: .85rem;
  color: var(--band-muted);
}
.footer-bottom a { color: var(--accent-dark); }

.demo-note {
  background: var(--band-surface);
  color: var(--band-muted);
  border: 1px solid rgba(233,196,106,.25);
  border-radius: var(--radius-sm);
  padding: .8rem 1rem;
  font-size: .85rem;
}
.demo-note strong { color: var(--accent-dark); font-family: var(--font-body); font-weight: 600; }

/* ---------- Visit planner ---------- */
.planner {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 2rem;
  align-items: start;
}
.planner-form { display: grid; gap: 1.75rem; }
.planner fieldset {
  border: 1px solid var(--surface-border);
  border-radius: var(--radius);
  padding: 1.1rem 1.1rem 1.25rem;
  margin: 0;
  background: var(--surface);
  min-width: 0;
}
.planner legend {
  font-family: var(--font-head);
  font-size: 1.15rem;
  padding: 0 .4rem;
  color: var(--ink);
}
.field-note {
  font-size: .85rem;
  color: var(--muted);
  margin: .5rem 0 0;
}

.tiles { display: grid; gap: .6rem; grid-template-columns: repeat(2, 1fr); }
.tiles--wide { grid-template-columns: 1fr 1fr; }
.tile { position: relative; min-width: 0; }
.tile input { position: absolute; opacity: 0; pointer-events: none; }
.tile label {
  display: flex;
  align-items: center;
  gap: .55rem;
  padding: .7rem .85rem;
  border: 2px solid var(--surface-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: var(--ground);
  font-weight: 500;
  min-height: 48px;
}
.tile label::before {
  content: "";
  width: 18px; height: 18px;
  flex: 0 0 auto;
  border: 2px solid var(--surface-border);
  border-radius: 4px;
  display: inline-block;
}
.tiles--radio .tile label::before { border-radius: 999px; }
/* selected: outline + tick, not colour alone (bug #13) */
.tile input:checked + label {
  border-color: var(--brand);
  background: color-mix(in srgb, var(--brand) 10%, var(--ground));
}
.tile input:checked + label::before {
  background: var(--brand);
  border-color: var(--brand);
  content: "✓";
  color: var(--on-brand);
  font-size: .8rem;
  text-align: center;
  line-height: 14px;
}
.tile input:focus-visible + label { outline: 3px solid var(--brand-text); outline-offset: 2px; }

.field-text, .field-date, textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  padding: .7rem .8rem;
  border: 2px solid var(--surface-border);
  border-radius: var(--radius-sm);
  background: var(--ground);
  color: var(--ink);
}
textarea { resize: vertical; min-height: 80px; }
.field-row label { display: block; font-weight: 600; margin-bottom: .4rem; }

/* number stepper */
.stepper { display: flex; align-items: center; gap: .75rem; }
.stepper button {
  width: 44px; height: 44px;
  border-radius: 999px;
  border: 2px solid var(--brand-text);
  background: transparent;
  color: var(--brand-text);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}
.stepper button:hover { background: var(--brand-text); color: var(--ground); }
.stepper .stepper-value { font-weight: 600; min-width: 7ch; text-align: center; }

.hidden { display: none !important; }
.countdown { font-size: .9rem; color: var(--brand-text); margin-top: .5rem; }

/* Live plan card — always dark panel */
.plan-panel {
  background: var(--band);
  color: var(--cream);
  border-radius: var(--radius);
  padding: 1.5rem;
  position: sticky;
  top: 90px;
}
.plan-panel h2, .plan-panel h3 { color: var(--cream); }
.plan-panel .eyebrow { color: var(--accent-dark); }
.plan-panel p { color: var(--band-muted); }
.plan-panel dl.nap dt { color: var(--accent-dark); }
.plan-panel dl.nap dd { color: var(--cream); }
.plan-panel .plan-empty { color: var(--band-muted); font-style: italic; }
.plan-message {
  background: var(--band-surface);
  border: 1px solid rgba(233,196,106,.25);
  border-radius: var(--radius-sm);
  padding: 1rem;
  margin-top: 1rem;
  color: var(--cream);
  font-size: .95rem;
  white-space: pre-wrap;
}
.plan-panel a.btn--ghost, .plan-panel button.btn--ghost {
  color: var(--accent-dark); border-color: var(--accent-dark); background: transparent;
}
.plan-panel a.btn--ghost:hover, .plan-panel button.btn--ghost:hover { background: var(--accent-dark); color: var(--ink-fixed); }
.plan-panel a.btn--primary { color: var(--on-brand); background: var(--brand); border-color: var(--brand); }
.plan-panel a.btn--sun { color: var(--ink-fixed); background: var(--sun); border-color: var(--sun); }

.copy-feedback { font-size: .85rem; color: var(--accent-dark); margin-top: .5rem; min-height: 1.2em; }

/* ---------- Utilities ---------- */
.section-head { max-width: 62ch; margin-bottom: 2rem; }
.stack > * + * { margin-top: 1rem; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--sun); color: var(--ink-fixed);
  padding: .6rem 1rem; z-index: 100; border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .planner { grid-template-columns: 1fr; }
  .plan-panel { position: static; }
  .findus { grid-template-columns: 1fr; }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 700px) {
  .site-header .container { flex-wrap: wrap; }
  .site-nav { order: 3; width: 100%; }   /* nav on its own row ≤700px */
  .site-nav ul { justify-content: flex-start; }
}
@media (max-width: 560px) {
  .grid--3, .grid--2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .tiles { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .header-cta { display: none; }        /* hide header CTA ≤480px */
}

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