/* ==========================================================================
   DRJB SMILE CLINIC — BASE STYLES
   Reset + shared structural primitives. Page-specific styles live in
   their own files (home.css, referrals.css, etc) and load after this.
   ========================================================================== */

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--text-calm);
  background: var(--bg-calm);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: var(--lh-tight);
  margin: 0;
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }

p { margin: 0 0 var(--space-sm); }

button {
  font-family: var(--font-body);
  cursor: pointer;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

:focus-visible {
  outline: 2px solid var(--accent-trust);
  outline-offset: 2px;
}

/* ---- Layout shell ---- */
.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.wrap-text {
  max-width: var(--max-width-text);
  margin: 0 auto;
}

@media (max-width: 640px) {
  .wrap { padding: 0 var(--space-sm); }
}

/* ---- Site header / nav ---- */
.site-header {
  border-bottom: 0.5px solid var(--line);
  background: var(--bg-calm);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  position: relative;
}

.site-logo {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 17px;
  letter-spacing: 0.01em;
  color: var(--text-calm);
  display: flex;
  align-items: center;
}

.site-logo img {
  height: 34px;
  width: auto;
  display: block;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  font-size: 14px;
  color: var(--text-calm-soft);
  transition: color var(--duration) var(--ease);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text-calm);
}

.site-nav .nav-cta {
  color: var(--text-calm);
  font-weight: 500;
  border-bottom: 1px solid var(--accent-trust);
  padding-bottom: 2px;
}

.nav-extra-group {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 10px;
  background: var(--bg-calm);
  border: 0.5px solid var(--line);
  border-radius: 8px;
  padding: 6px;
  min-width: 160px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  z-index: 20;
}

.site-nav.nav-open .nav-extra-group {
  display: block;
}

.nav-extra-group a {
  display: block;
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--text-calm-soft);
}

.nav-extra-group a:hover,
.nav-extra-group a:focus-visible {
  background: var(--bg-calm-tint);
  color: var(--text-calm);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-call {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 0.5px solid var(--line);
  color: var(--text-calm);
  font-size: 16px;
  flex: none;
}

.header-call:hover { background: var(--bg-calm-tint); }

.header-book {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
}

.surface-deep .header-call {
  color: var(--text-deep);
  border-color: var(--deep-line);
}

.surface-deep .header-call:hover { background: var(--bg-deep-tint, var(--bg-deep)); }

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-calm);
  cursor: pointer;
}

@media (max-width: 880px) {
  .site-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--bg-calm);
    border-bottom: 0.5px solid var(--line);
    padding: 8px var(--space-lg) 16px;
  }

  .site-nav.nav-open {
    display: flex;
  }

  .site-nav a {
    width: 100%;
    padding: 12px 0;
    border-bottom: 0.5px solid var(--line);
  }

  .site-nav a:last-child {
    border-bottom: none;
  }

  .site-nav .nav-cta {
    border-bottom: 0.5px solid var(--line);
  }

  .nav-toggle { display: flex; }

  .nav-extra-group {
    display: contents;
  }

  .site-nav.nav-open .nav-extra-group {
    display: contents;
  }

  .nav-extra-group a {
    width: 100%;
    padding: 12px 0;
    border-bottom: 0.5px solid var(--line);
  }
}

.surface-deep .site-nav {
  background: var(--bg-deep);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  transition: transform var(--duration) var(--ease), opacity var(--duration) var(--ease);
  border: none;
}

.btn:hover { opacity: 0.88; }
.btn:active { transform: scale(0.98); }

.btn-primary {
  background: var(--ink);
  color: var(--paper);
}

.btn-secondary {
  background: transparent;
  color: var(--ink);
  border: 0.5px solid var(--ink);
}

.btn-ghost {
  background: transparent;
  color: var(--text-calm-soft);
  border: none;
  padding: 12px 4px;
  font-weight: 600;
}

.btn-ghost:hover { color: var(--text-calm); opacity: 1; }

/* ---- Footer ---- */
.site-footer {
  border-top: 0.5px solid var(--line);
  padding: var(--space-xl) 0 var(--space-lg);
  margin-top: var(--space-xxl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: var(--space-lg);
  font-size: 13px;
  color: var(--text-calm-soft);
  padding-bottom: var(--space-lg);
}

.footer-grid a {
  color: var(--text-calm-soft);
}

.footer-grid a:hover {
  color: var(--text-calm);
}

.footer-col h3 {
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-calm);
  margin: 0 0 var(--space-xs);
}

.footer-col p {
  margin: 0 0 var(--space-sm);
  line-height: 1.6;
}

.footer-bottom {
  border-top: 0.5px solid var(--line);
  padding-top: var(--space-sm);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: 13px;
  color: var(--text-calm-soft);
}

.footer-bottom a {
  color: var(--text-calm-soft);
}

@media (max-width: 720px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
}

.site-footer a:hover { color: var(--text-calm); }

.footer-phone {
  font-weight: 700;
  color: var(--text-calm);
  font-size: 14px;
}

.surface-deep .footer-phone { color: var(--text-deep); }

/* ---- Deep voice surfaces (bios, blog, referrals) ---- */
.surface-deep {
  background: var(--bg-deep);
  color: var(--text-deep);
}

.surface-deep .site-header,
.surface-deep .site-footer {
  background: var(--bg-deep);
  border-color: var(--deep-line);
}

.surface-deep .site-logo,
.surface-deep .site-nav a:hover,
.surface-deep .nav-toggle { color: var(--text-deep); }

.surface-deep .site-nav a { color: var(--text-deep-soft); }

.surface-deep .nav-extra-group { background: var(--bg-deep); border-color: var(--deep-line); }
.surface-deep .nav-extra-group a { color: var(--text-deep-soft); }
.surface-deep .nav-extra-group a:hover { color: var(--text-deep); }

.surface-deep .btn-primary {
  background: var(--text-deep);
  color: var(--deep-bg);
}

.surface-deep .btn-secondary {
  color: var(--text-deep);
  border-color: var(--text-deep);
}