/* =====================================================================
   North Anderson Chiropractic — site styles
   Light theme, responsive, vanilla CSS. Iterate as branding firms up.
   ===================================================================== */

:root {
  /* Color palette — navy drawn from the client logo */
  --color-bg: #ffffff;
  --color-surface: #f5f7fc;
  --color-surface-2: #e9eef8;
  --color-border: #d7dded;
  --color-text: #15203b;
  --color-text-muted: #566179;
  --color-primary: #1d2c63;
  --color-primary-dark: #0e1738;
  --color-primary-soft: #e2e6f3;
  --color-accent: #4a78c8;
  --color-success: #2f8f5d;
  --color-danger: #b3331f;

  /* Typography */
  --font-sans: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Georgia", "Cambria", "Times New Roman", serif;

  /* Layout */
  --container-max: 1140px;
  --container-pad: clamp(1rem, 4vw, 2rem);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* Effects */
  --shadow-sm: 0 1px 2px rgba(14, 23, 56, 0.07), 0 1px 3px rgba(14, 23, 56, 0.09);
  --shadow-md: 0 4px 12px rgba(14, 23, 56, 0.09), 0 2px 4px rgba(14, 23, 56, 0.07);
  --shadow-lg: 0 16px 40px rgba(14, 23, 56, 0.14);

  --transition: 180ms ease;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; height: auto; }
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover, a:focus { color: var(--color-primary-dark); text-decoration: underline; }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-primary-dark);
  line-height: 1.2;
  margin: 0 0 .6em;
}
h1 { font-size: clamp(2rem, 4.5vw, 3rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }
ul, ol { padding-left: 1.25rem; }

/* ---------- Accessibility ---------- */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}
.skip-link {
  position: absolute;
  left: 0; top: -40px;
  background: var(--color-primary-dark);
  color: #fff;
  padding: .6rem 1rem;
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 100;
}
.skip-link:focus { top: 0; color: #fff; text-decoration: none; }

/* ---------- Layout ---------- */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}
section { padding-block: clamp(2.5rem, 6vw, 4.5rem); }
section.alt { background: var(--color-surface); }
section.muted { background: var(--color-surface-2); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .85rem 1.4rem;
  border-radius: 999px;
  border: 2px solid transparent;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
  text-decoration: none;
  line-height: 1;
}
.btn:hover, .btn:focus { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover, .btn-primary:focus { background: var(--color-primary-dark); color: #fff; }
.btn-ghost {
  background: transparent;
  color: var(--color-primary-dark);
  border-color: var(--color-primary);
}
.btn-ghost:hover, .btn-ghost:focus { background: var(--color-primary-soft); color: var(--color-primary-dark); }
.btn-block { width: 100%; justify-content: center; }

/* ---------- Site header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: .8rem;
}
.brand { display: inline-flex; align-items: center; gap: .65rem; text-decoration: none; }
.brand:hover, .brand:focus { text-decoration: none; }
.brand img { width: 200px; height: auto; }
.brand img.brand-mark,
.brand-mark { width: auto; height: 65px; flex-shrink: 0; }
.brand-wordmark {
  display: inline-flex;
  flex-direction: column;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.1;
  color: var(--color-primary-dark);
  letter-spacing: .01em;
}
.brand-line { display: block; white-space: nowrap; }
.brand-initial {
  display: inline-block;
  font-size: 1.05em;
  font-weight: 700;
  color: var(--color-primary);
  margin-right: .02em;
  line-height: 1;
}
.brand:hover .brand-initial,
.brand:focus .brand-initial { color: var(--color-accent); transition: color var(--transition); }

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--color-border);
  width: 42px; height: 42px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-dark);
}
.nav-toggle svg { width: 22px; height: 22px; }

.primary-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: .25rem;
  align-items: center;
}
.primary-nav a {
  display: inline-block;
  padding: .6rem .9rem;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-weight: 500;
}
.primary-nav a:hover,
.primary-nav a:focus,
.primary-nav a[aria-current="page"] {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  text-decoration: none;
}
.header-cta { margin-left: .5rem; }

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .primary-nav {
    position: absolute;
    inset: 100% 0 auto 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    display: none;
  }
  .primary-nav.open { display: block; }
  .primary-nav ul {
    flex-direction: column;
    align-items: stretch;
    padding: .75rem var(--container-pad);
    gap: 0;
  }
  .primary-nav a { padding: .85rem .6rem; }
  .header-cta { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(255,255,255,.6) 100%),
    url("../assets/hero.svg") right center / cover no-repeat,
    var(--color-surface-2);
  padding-block: clamp(3rem, 8vw, 6rem);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}
.hero-eyebrow {
  display: inline-block;
  color: var(--color-primary);
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: .8rem;
  margin-bottom: 1rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.5rem; }
.hero-meta {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.5rem;
  color: var(--color-text-muted);
  font-size: .95rem;
}
.hero-meta strong { color: var(--color-primary-dark); display: block; font-size: 1rem; }

@media (min-width: 820px) {
  .hero-grid { grid-template-columns: 1.3fr 1fr; }
}

/* ---------- Sections ---------- */
.section-head {
  max-width: 720px;
  margin: 0 auto 2.5rem;
  text-align: center;
}
.section-head .eyebrow {
  color: var(--color-primary);
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: .8rem;
}

/* ---------- Grids ---------- */
.grid { display: grid; gap: 1.25rem; }
.grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

/* ---------- Cards ---------- */
.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.card h3 { margin-top: .25rem; }
.card .card-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}
.card .card-icon svg { width: 26px; height: 26px; }

.card.lead {
  background: var(--color-primary-dark);
  color: #e7ecfa;
  border-color: transparent;
}
.card.lead h3 { color: #fff; }
.card.lead a { color: #a8c0ee; }

/* ---------- Condition chips ---------- */
.chip-list {
  list-style: none;
  padding: 0; margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}
.chip-list li {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: .45rem .9rem;
  font-size: .92rem;
  color: var(--color-text);
}

/* ---------- About / split content ---------- */
.split {
  display: grid;
  gap: 2rem;
  align-items: center;
}
@media (min-width: 820px) {
  .split { grid-template-columns: 1fr 1fr; gap: 3rem; }
  .split.reverse > :first-child { order: 2; }
}
.portrait {
  background: var(--color-primary-soft);
  border-radius: var(--radius-lg);
  aspect-ratio: 4 / 5;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-dark);
  text-align: center;
  font-family: var(--font-display);
  font-size: 1.1rem;
  border: 1px dashed var(--color-primary);
  padding: 2rem;
  overflow: hidden;
  position: relative;
}
.portrait small { display: block; margin-top: .5rem; color: var(--color-text-muted); font-family: var(--font-sans); }
.portrait.has-photo {
  padding: 0;
  border: 0;
  background: var(--color-primary-soft);
  box-shadow: var(--shadow-md);
}
.portrait.has-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}
.portrait figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  background: linear-gradient(180deg, rgba(14,23,56,0) 0%, rgba(14,23,56,.78) 100%);
  color: #fff;
  font-family: var(--font-sans);
  font-size: .9rem;
  padding: 2rem 1.25rem 1rem;
  text-align: left;
}
.portrait figcaption strong { display: block; font-family: var(--font-display); font-size: 1.05rem; }

/* ---------- Steps ---------- */
.steps {
  counter-reset: step;
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  list-style: none;
  padding: 0;
}
.steps li {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  position: relative;
  counter-increment: step;
}
.steps li::before {
  content: counter(step);
  position: absolute;
  top: -16px; left: 1.25rem;
  background: var(--color-primary);
  color: #fff;
  width: 34px; height: 34px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}
.steps h3 { margin-top: .5rem; }

/* ---------- Testimonials ---------- */
.quote {
  background: #fff;
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.75rem;
  box-shadow: var(--shadow-sm);
}
.quote p { font-style: italic; color: var(--color-primary-dark); }
.quote footer { color: var(--color-text-muted); font-size: .9rem; }

/* ---------- FAQ ---------- */
.faq details {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: .75rem;
}
.faq details[open] { box-shadow: var(--shadow-sm); }
.faq summary {
  font-weight: 600;
  color: var(--color-primary-dark);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.faq summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--color-primary);
  transition: transform var(--transition);
}
.faq details[open] summary::after { content: "−"; }
.faq summary::-webkit-details-marker { display: none; }
.faq p { margin: .75rem 0 0; color: var(--color-text); }

/* ---------- Contact / forms ---------- */
.contact-grid {
  display: grid;
  gap: 2rem;
}
@media (min-width: 820px) {
  .contact-grid { grid-template-columns: 1fr 1.2fr; }
}
.info-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}
.info-card h3 { margin-top: 0; }
.info-card dl { display: grid; grid-template-columns: 110px 1fr; gap: .35rem 1rem; margin: 0; }
.info-card dt { color: var(--color-text-muted); font-weight: 500; }
.info-card dd { margin: 0; }

.form {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}
.form-row { margin-bottom: 1rem; }
.form-row.two {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}
@media (min-width: 600px) {
  .form-row.two { grid-template-columns: 1fr 1fr; }
}
.form label {
  display: block;
  font-weight: 600;
  margin-bottom: .35rem;
  color: var(--color-primary-dark);
  font-size: .95rem;
}
.form input,
.form select,
.form textarea {
  width: 100%;
  padding: .7rem .85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font: inherit;
  color: var(--color-text);
  background: #fff;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form input:focus,
.form select:focus,
.form textarea:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(29, 44, 99, .22);
}
.form textarea { min-height: 140px; resize: vertical; }
.form .form-help { font-size: .85rem; color: var(--color-text-muted); margin: .25rem 0 0; }
.form .form-status {
  margin-top: 1rem;
  font-size: .95rem;
  padding: .75rem 1rem;
  border-radius: var(--radius-sm);
  display: none;
}
.form .form-status.success { display: block; background: #e7f5ec; color: #1e5d3c; border: 1px solid #b5e0c3; }
.form .form-status.error { display: block; background: #fbe9e6; color: #7a2515; border: 1px solid #e9b8af; }

/* ---------- Map ---------- */
.map-wrap {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  background: #fff;
}
.map-wrap iframe { display: block; width: 100%; height: 360px; border: 0; }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 5vw, 3rem);
  display: grid;
  gap: 1.25rem;
  align-items: center;
  text-align: center;
}
.cta-band h2 { color: #fff; margin-bottom: .25rem; }
.cta-band p { color: #cdd6f0; margin: 0; }
.cta-band .btn-primary { background: #fff; color: var(--color-primary-dark); }
.cta-band .btn-primary:hover { background: var(--color-accent); color: #fff; }
.cta-band .btn-ghost { color: #fff; border-color: rgba(255,255,255,.6); }
.cta-band .btn-ghost:hover { background: rgba(255,255,255,.12); color: #fff; }
@media (min-width: 820px) {
  .cta-band {
    grid-template-columns: 1fr auto;
    text-align: left;
  }
  .cta-band .cta-actions { display: flex; gap: .75rem; }
}

/* ---------- Footer ---------- */
.site-footer {
  background: #0e1738;
  color: #d2d8ec;
  padding-block: 3rem 1.5rem;
  margin-top: 3rem;
}
.site-footer a { color: #a8c0ee; }
.site-footer a:hover { color: #fff; }
.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}
.footer-grid h4 {
  color: #fff;
  font-family: var(--font-sans);
  font-size: .85rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: .75rem;
}
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .35rem; }
.footer-brand p { color: #9aa4c0; font-size: .95rem; }
.legal {
  margin-top: 2.5rem;
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 1.25rem;
  font-size: .85rem;
  color: #9aa4c0;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ---------- Utilities ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.lead { font-size: 1.1rem; color: var(--color-text-muted); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}