/* =========================================================
   Chiropractic Center Göttingen – Grundgerüst
   Struktur: Tokens -> Reset -> Layout -> Komponenten -> Utilities
   ========================================================= */

:root {
  /* Farben */
  --color-black: #0a0a0a;
  --color-charcoal: #1a1a1a;
  --color-white: #ffffff;
  --color-offwhite: #f5f5f3;
  --color-red: #c41e2a;
  --color-red-dark: #96151f;
  --color-gray-mid: #6b6b6b;
  --color-gray-line: #e2e0dc;

  /* Typografie */
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", -apple-system, Segoe UI, Roboto, sans-serif;

  --fs-h1: clamp(2.2rem, 5vw + 1rem, 4rem);
  --fs-h2: clamp(1.7rem, 3vw + 1rem, 2.6rem);
  --fs-h3: clamp(1.2rem, 1.5vw + 1rem, 1.5rem);
  --fs-body: 1.05rem;
  --fs-small: 0.9rem;

  /* Abstände */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 7rem;

  /* Layout */
  --content-width: 1180px;
  --radius: 2px;
  --header-height: 84px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  color: var(--color-black);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 var(--space-sm);
}
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); color: var(--color-gray-mid); }
button { font-family: inherit; cursor: pointer; }

/* Sichtbarer Fokus – Barrierefreiheit */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--color-red);
  outline-offset: 2px;
}

/* Reduced motion respektieren */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- Layout-Helfer ---------- */
.container {
  width: 100%;
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: var(--space-sm);
}
.section {
  padding-block: var(--space-lg);
}
.section--offwhite { background: var(--color-offwhite); }

.eyebrow {
  display: inline-block;
  font-size: var(--fs-small);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-red);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.btn {
  display: inline-block;
  padding: 0.85rem 1.8rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: var(--fs-small);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: background-color .2s ease, color .2s ease, transform .15s ease;
  border: 1.5px solid transparent;
}
.btn--primary {
  background: var(--color-red);
  color: var(--color-white);
}
.btn--primary:hover { background: var(--color-red-dark); }
.btn--outline {
  border-color: currentColor;
  background: transparent;
}
.btn--outline:hover { background: var(--color-white); color: var(--color-black); }

/* Wirbelsäulen-Linie – Signatur-Element, siehe includes/spine-divider.php */
.spine-divider {
  display: block;
  width: 100%;
  height: auto;
  margin-block: var(--space-md);
}
.spine-divider path {
  stroke: var(--color-red);
  fill: none;
}

/* ---------- Header / Navigation ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-line);
  height: var(--header-height);
  display: flex;
  align-items: center;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1440px;
  gap: var(--space-md);
}
.logo {
  display: flex;
  align-items: center;
  height: 100%;
}
.logo-img {
  height: 56px;      /* passt in header-height: 84px mit Luft nach oben/unten */
  width: auto;
  max-width: 220px;  /* verhindert, dass ein sehr breites Logo die Nav verdrängt */
  object-fit: contain;
}

.main-nav {
  display: flex;
  gap: 1.1rem;
}
.main-nav a {
  font-size: 0.88rem;
  font-weight: 500;
  position: relative;
  padding-block: 0.3rem;
  white-space: nowrap;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0;
  height: 2px;
  background: var(--color-red);
  transition: width .2s ease;
}
.main-nav a:hover::after,
.main-nav a[aria-current="page"]::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.header-phone {
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
}

/* Mobile-Nav-Toggle (Hamburger) */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.5rem;
  width: 44px;
  height: 44px;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-black);
  position: relative;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle span::before { position: absolute; top: -8px; }
.nav-toggle span::after { position: absolute; top: 8px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: rotate(45deg); top: 0; }
.nav-toggle[aria-expanded="true"] span::after { transform: rotate(-45deg); top: 0; }

/* ---------- Footer ---------- */
.site-footer {
  background: linear-gradient(135deg, var(--color-red-dark) 0%, var(--color-red) 55%, #a81823 100%);
  color: #ffe3e3;
  padding-block: var(--space-lg) var(--space-md);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}
.footer-grid h4 { color: var(--color-white); font-size: 1rem; }
.footer-grid p { color: #ffe3e3; }
.footer-grid a:hover { color: var(--color-white); text-decoration: underline; }
.footer-grid li { margin-bottom: 0.5rem; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.25);
  padding-top: var(--space-sm);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: var(--fs-small);
  color: #ffd0d0;
}
.footer-bottom a:hover { color: var(--color-white); }

/* =========================================================
   Navigation wird ab 1150px zum Off-Canvas-Menü (7 Nav-Punkte
   brauchen mehr Platz als ein schmaleres Menü)
   ========================================================= */
@media (max-width: 1150px) {
  .logo-img { height: 44px; }
  .main-nav {
    position: fixed;
    inset: var(--header-height) 0 0 0;
    background: var(--color-white);
    flex-direction: column;
    gap: 0;
    padding: var(--space-sm);
    transform: translateX(100%);
    transition: transform .25s ease;
    overflow-y: auto;
  }
  .main-nav[data-open="true"] { transform: translateX(0); }
  .main-nav a {
    display: block;
    padding: 1rem 0.5rem;
    border-bottom: 1px solid var(--color-gray-line);
    font-size: 1.1rem;
  }
  .header-phone { display: none; }
  .nav-toggle { display: block; }
}

/* Mobile (< 860px): Footer/Section-Anpassungen */
@media (max-width: 860px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  .section { padding-block: var(--space-md); }
}

@media (max-width: 480px) {
  .container { padding-inline: var(--space-sm); }
  .btn { width: 100%; text-align: center; }
}