/* ==========================================================================
   CHIROPRACTOR ROUND ROCK TX — Design System
   Wellness/health niche. Fraunces + Inter. Deep teal + warm amber.
   Sharp corners. Strong hierarchy. WCAG AA.
   ========================================================================== */

:root {
  /* Palette */
  --color-primary: #0F5257;         /* deep teal — CTAs, headings, accent blocks */
  --color-primary-dark: #0A3A3E;    /* hover / dark state */
  --color-primary-ink: #FAF7F2;     /* ivory on teal */
  --color-accent: #E8B86D;          /* warm amber — highlights, underlines, badges */
  --color-accent-dark: #C99A4D;
  --color-ink: #1A1A1A;             /* charcoal — body headings, footer bg */
  --color-body: #2A2A2A;            /* body copy */
  --color-muted: #6B6B6B;           /* captions, fine print */
  --color-line: #E5DFD3;            /* warm hairline borders */
  --color-bg: #FAF7F2;              /* ivory page */
  --color-bg-alt: #F3EDE2;          /* slightly darker ivory for banding */
  --color-success: #0F5257;
  --color-error: #B43B3B;

  /* Typography */
  --font-heading: 'Fraunces', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;

  /* Scale (1.25 modular) */
  --fs-h1: clamp(2.5rem, 5vw, 4.25rem);
  --fs-h2: clamp(1.75rem, 3.5vw, 2.75rem);
  --fs-h3: clamp(1.25rem, 2vw, 1.5rem);
  --fs-body: 1.125rem;
  --fs-small: 0.9375rem;

  /* Spacing (8px base) */
  --s-1: 0.5rem;
  --s-2: 1rem;
  --s-3: 1.5rem;
  --s-4: 2rem;
  --s-5: 3rem;
  --s-6: 4rem;
  --s-7: 6rem;
  --s-8: 8rem;

  /* Layout */
  --container: 1200px;
  --container-wide: 1360px;
  --container-narrow: 800px;
  --header-h: 76px;
  --radius: 0;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.65;
  color: var(--color-body);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img, picture, svg, video { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; }
a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--color-primary-dark); text-decoration-thickness: 2px; }

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.08;
  color: var(--color-ink);
  letter-spacing: -0.02em;
}
h1 { font-size: var(--fs-h1); color: var(--color-primary); }
h2 { font-size: var(--fs-h2); color: var(--color-primary); }
h3 { font-size: var(--fs-h3); font-weight: 700; color: var(--color-primary); }
h4 { font-size: 1.125rem; font-weight: 700; color: var(--color-primary); }
p { max-width: 68ch; }

.overline {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 700;
  color: var(--color-accent-dark);
  margin-bottom: var(--s-2);
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--s-3);
}
.container-wide { max-width: var(--container-wide); }
.container-narrow { max-width: var(--container-narrow); }

section { padding-block: var(--s-6); }
@media (min-width: 768px) { section { padding-block: var(--s-7); } }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-1);
  padding: 1rem 1.75rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  letter-spacing: 0.01em;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s, color 0.15s, border-color 0.15s;
}
.btn-primary { background: var(--color-primary); color: var(--color-primary-ink); }
.btn-primary:hover { background: var(--color-primary-dark); color: var(--color-primary-ink); text-decoration: none; }
.btn-secondary { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn-secondary:hover { background: var(--color-primary); color: var(--color-primary-ink); text-decoration: none; }
.btn-accent { background: var(--color-accent); color: var(--color-ink); }
.btn-accent:hover { background: var(--color-accent-dark); color: var(--color-ink); text-decoration: none; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: saturate(1.1) blur(8px);
  border-bottom: 1px solid var(--color-line);
  height: var(--header-h);
}
.site-header > .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-3);
  height: 100%;
}
.site-logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
  line-height: 1;
}
.site-logo:hover { color: var(--color-primary-dark); text-decoration: none; }
.site-header nav {
  display: none;
  gap: var(--s-4);
}
.site-header nav a {
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9375rem;
}
.site-header nav a:hover { color: var(--color-primary); }
@media (min-width: 900px) { .site-header nav { display: flex; } }

.header-call {
  display: inline-flex;
  align-items: center;
  gap: var(--s-1);
  padding: 0.75rem 1.25rem;
  background: var(--color-primary);
  color: var(--color-primary-ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9375rem;
  white-space: nowrap;
}
.header-call:hover { background: var(--color-primary-dark); color: var(--color-primary-ink); text-decoration: none; }
.header-call svg { flex-shrink: 0; }
.header-call .num { display: none; }
@media (min-width: 480px) { .header-call .num { display: inline; } }

/* Hero */
.hero {
  padding-block: var(--s-5);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
}
@media (min-width: 900px) {
  .hero { padding-block: var(--s-7); }
  .hero .container { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--s-6); align-items: center; }
}
.hero h1 { margin-bottom: var(--s-3); }
.hero .subhead {
  font-family: var(--font-body);
  font-size: 1.1875rem;
  color: var(--color-body);
  margin-bottom: var(--s-4);
  max-width: 54ch;
  line-height: 1.55;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: var(--s-2); margin-bottom: var(--s-3); }
.trust-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--s-1);
  padding: 0.5rem 0.875rem;
  background: var(--color-bg-alt);
  border-left: 3px solid var(--color-accent);
  color: var(--color-ink);
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: var(--s-3);
}
.trust-pill .stars { color: var(--color-accent-dark); letter-spacing: 0.1em; font-weight: 700; }

/* Hero — alt variant for non-home pages */
.hero.hero-simple { text-align: center; }
.hero.hero-simple .container { display: block; }
.hero.hero-simple h1 { margin-inline: auto; max-width: 20ch; }
.hero.hero-simple .subhead { margin-inline: auto; }

/* Lead form card */
.lead-form {
  background: #fff;
  padding: var(--s-4);
  border: 1px solid var(--color-line);
  border-bottom: 6px solid var(--color-accent);
  box-shadow: 0 1px 0 0 rgba(15, 82, 87, 0.04);
}
.lead-form h2 {
  font-size: 1.5rem;
  margin-bottom: 0.375rem;
  color: var(--color-primary);
}
.lead-form .lead-form-intro {
  font-size: 0.9375rem;
  color: var(--color-muted);
  margin-bottom: var(--s-3);
}
.lead-form .form-row { display: grid; gap: var(--s-2); margin-bottom: var(--s-3); }
.lead-form label {
  display: block;
  font-weight: 600;
  font-size: 0.8125rem;
  color: var(--color-ink);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.375rem;
}
.lead-form input, .lead-form select, .lead-form textarea {
  width: 100%;
  padding: 0.75rem 0.875rem;
  border: 1px solid var(--color-line);
  background: var(--color-bg);
  font-size: 1rem;
  color: var(--color-ink);
  font-family: var(--font-body);
}
.lead-form input:focus, .lead-form select:focus, .lead-form textarea:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
  border-color: var(--color-primary);
  background: #fff;
}
.lead-form textarea { min-height: 96px; resize: vertical; }
.lead-form .btn { width: 100%; padding: 1.125rem 1.5rem; font-size: 1rem; }
.lead-form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.lead-form .form-note {
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin-top: var(--s-2);
  text-align: center;
}

/* Trust bar */
.trust-bar {
  background: var(--color-bg-alt);
  border-block: 1px solid var(--color-line);
  padding-block: var(--s-3);
}
.trust-bar ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--s-2) var(--s-4);
}
.trust-bar li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.8125rem;
  color: var(--color-ink);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  white-space: nowrap;
}
.trust-bar li svg { flex-shrink: 0; color: var(--color-accent-dark); }
@media (min-width: 1024px) {
  .trust-bar ul { justify-content: space-between; gap: var(--s-2) var(--s-3); }
}

/* Services grid */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-2);
}
@media (min-width: 640px) { .services-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .services-grid { grid-template-columns: repeat(4, 1fr); } }
.service-card {
  display: flex;
  flex-direction: column;
  padding: var(--s-4) var(--s-3);
  background: #fff;
  border: 1px solid var(--color-line);
  border-top: 4px solid var(--color-accent);
  text-decoration: none;
  color: inherit;
  transition: background 0.15s, border-color 0.15s, transform 0.15s;
}
.service-card:hover {
  background: var(--color-bg-alt);
  border-top-color: var(--color-primary);
  text-decoration: none;
}
.service-card h3 { margin-bottom: var(--s-1); }
.service-card p { color: var(--color-body); font-size: 0.9375rem; flex: 1; }
.service-card .arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  margin-top: var(--s-2);
  font-weight: 700;
  color: var(--color-primary);
  font-size: 0.9375rem;
}

/* Section header utility */
.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  margin-bottom: var(--s-5);
  max-width: 48rem;
}
.section-head.section-head-split {
  flex-direction: column;
}
@media (min-width: 900px) {
  .section-head.section-head-split {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
    max-width: none;
  }
  .section-head.section-head-split .head-copy { max-width: 40rem; }
}

/* Reviews (on teal band) */
.reviews {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}
.reviews h2, .reviews .overline { color: var(--color-primary-ink); }
.reviews .overline { color: var(--color-accent); }
.reviews-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-3);
}
@media (min-width: 768px) { .reviews-grid { grid-template-columns: repeat(3, 1fr); } }
.review-card {
  background: var(--color-bg);
  color: var(--color-body);
  padding: var(--s-4);
  border: 1px solid var(--color-line);
  position: relative;
}
.review-card .stars {
  color: var(--color-accent-dark);
  font-size: 1rem;
  margin-bottom: var(--s-2);
  letter-spacing: 0.12em;
  font-weight: 700;
}
.review-card blockquote {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.125rem;
  line-height: 1.45;
  color: var(--color-primary);
  margin-bottom: var(--s-3);
}
.review-card cite {
  font-style: normal;
  font-weight: 700;
  color: var(--color-ink);
  display: block;
  font-size: 0.9375rem;
}
.review-card cite span {
  display: block;
  font-weight: 500;
  font-size: 0.75rem;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.25rem;
}

/* About preview (two column with accent block) */
.about-preview .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-5);
  align-items: center;
}
@media (min-width: 900px) {
  .about-preview .container { grid-template-columns: 1fr 1fr; gap: var(--s-7); }
}
.about-media {
  position: relative;
  aspect-ratio: 4 / 5;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-line);
  overflow: hidden;
}
.about-media::before {
  content: "";
  position: absolute;
  inset: var(--s-3) auto auto var(--s-3);
  width: 100%;
  height: 100%;
  background: var(--color-accent);
  opacity: 0.25;
  z-index: -1;
}
.about-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.about-checklist {
  list-style: none;
  padding: 0;
  margin: var(--s-3) 0 var(--s-4);
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
}
.about-checklist li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-weight: 500;
  color: var(--color-ink);
}
.about-checklist li svg {
  flex-shrink: 0;
  color: var(--color-accent-dark);
  margin-top: 0.125rem;
}

/* Service area (Round Rock) */
.service-area .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-5);
  align-items: center;
}
@media (min-width: 900px) {
  .service-area .container { grid-template-columns: 2fr 1fr; }
}
.map-embed {
  aspect-ratio: 16 / 10;
  border: 1px solid var(--color-line);
  background: var(--color-bg-alt);
  overflow: hidden;
}
.map-embed iframe { width: 100%; height: 100%; border: 0; display: block; }

/* FAQ */
.faq details {
  border-bottom: 1px solid var(--color-line);
  padding-block: var(--s-3);
}
.faq summary {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 2.5rem;
  line-height: 1.3;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: -0.25rem;
  font-size: 1.75rem;
  color: var(--color-accent-dark);
  font-weight: 400;
  transition: transform 0.15s;
  line-height: 1;
}
.faq details[open] summary::after { content: "−"; }
.faq details p {
  margin-top: var(--s-2);
  max-width: 64ch;
  color: var(--color-body);
}

/* Final CTA band */
.cta-band {
  background: var(--color-primary);
  color: var(--color-primary-ink);
  text-align: center;
}
.cta-band h2 { color: var(--color-primary-ink); margin-bottom: var(--s-2); }
.cta-band p { color: var(--color-primary-ink); font-size: 1.125rem; margin: 0 auto var(--s-3); max-width: 48ch; opacity: 0.92; }
.cta-band .btn-primary { background: var(--color-accent); color: var(--color-ink); }
.cta-band .btn-primary:hover { background: var(--color-accent-dark); color: var(--color-ink); }
.cta-band .cta-phone { margin-top: var(--s-3); color: var(--color-primary-ink); }
.cta-band .cta-phone a { color: var(--color-primary-ink); font-weight: 700; }

/* Footer */
.site-footer {
  background: var(--color-ink);
  color: rgba(250, 247, 242, 0.8);
  padding-block: var(--s-6) var(--s-3);
  font-size: 0.9375rem;
}
.site-footer a { color: var(--color-primary-ink); text-decoration: none; }
.site-footer a:hover { color: var(--color-accent); }
.site-footer .footer-logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-primary-ink);
  margin-bottom: var(--s-2);
  display: block;
  letter-spacing: -0.01em;
}
.site-footer .footer-grid {
  display: grid;
  gap: var(--s-4);
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .site-footer .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--s-5); }
}
.site-footer h4 {
  color: var(--color-accent);
  margin-bottom: var(--s-2);
  font-family: var(--font-body);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 700;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 0.5rem; }
.site-footer address { font-style: normal; line-height: 1.7; }
.site-footer .footer-bottom {
  margin-top: var(--s-5);
  padding-top: var(--s-3);
  border-top: 1px solid rgba(250, 247, 242, 0.1);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--s-2);
  font-size: 0.8125rem;
  color: rgba(250, 247, 242, 0.5);
}
.site-footer .footer-bottom a { color: rgba(250, 247, 242, 0.7); }

/* Sticky mobile CTA */
.mobile-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding-bottom: env(safe-area-inset-bottom);
  transform: translateY(100%);
  transition: transform 0.25s ease;
}
.mobile-cta.visible { transform: translateY(0); }
.mobile-cta a {
  padding: 1rem;
  text-align: center;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9375rem;
  font-family: var(--font-body);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}
.mobile-cta .call { background: var(--color-primary); color: var(--color-primary-ink); }
.mobile-cta .quote { background: var(--color-accent); color: var(--color-ink); }
@media (min-width: 768px) { .mobile-cta { display: none; } }

/* Breadcrumbs */
.breadcrumbs {
  padding-block: var(--s-2);
  font-size: 0.875rem;
  color: var(--color-muted);
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-line);
}
.breadcrumbs a { color: var(--color-muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--color-primary); }
.breadcrumbs span[aria-current] { color: var(--color-ink); font-weight: 600; }
.breadcrumbs .sep { margin-inline: 0.5rem; opacity: 0.5; }

/* Content blocks (prose) */
.prose h2 { margin-top: var(--s-5); margin-bottom: var(--s-2); }
.prose h2:first-child { margin-top: 0; }
.prose h3 { margin-top: var(--s-4); margin-bottom: var(--s-2); }
.prose p { margin-bottom: var(--s-2); }
.prose ul, .prose ol { margin-bottom: var(--s-3); padding-left: 1.25rem; }
.prose li { margin-bottom: 0.375rem; }
.prose strong { color: var(--color-ink); }

/* Utility */
.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;
}
.text-center { text-align: center; }
.mb-1 { margin-bottom: var(--s-1); }
.mb-2 { margin-bottom: var(--s-2); }
.mb-3 { margin-bottom: var(--s-3); }
.mb-4 { margin-bottom: var(--s-4); }
.mt-3 { margin-top: var(--s-3); }
.mt-4 { margin-top: var(--s-4); }

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