/* ==========================================================================
   E&E Reifenglanz — Wiederkehrende Bausteine: Header, Buttons, Footer, Formulare
   ========================================================================== */

/* Header / Navigation
   ------------------------------------------------------------------------ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  padding: var(--space-m) 0;
  transition: padding 0.35s var(--ease), background-color 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color .35s var(--ease);
  background: linear-gradient(to bottom, rgba(21, 18, 15, 0.55), rgba(21, 18, 15, 0));
  border-bottom: 1px solid transparent;
}

.site-header.is-solid {
  padding: var(--space-xs) 0;
  background: rgba(21, 18, 15, 0.96);
  border-bottom-color: var(--color-ink-line);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
}

.site-header__logo {
  font-family: var(--font-display);
  text-transform: uppercase;
  color: var(--color-text-invert);
  text-decoration: none;
  font-size: var(--step-md);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.site-header__logo span {
  color: var(--color-accent-light);
}

.site-nav ul {
  display: flex;
  gap: var(--space-m);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  text-decoration: none;
  color: var(--color-text-invert);
  font-size: var(--step-small);
  font-weight: 500;
  padding: var(--space-3xs) var(--space-2xs);
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s var(--ease), color .2s var(--ease);
  white-space: nowrap;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  border-bottom-color: var(--color-accent);
  color: #fff;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-m);
}

.tel-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3xs);
  color: var(--color-text-invert);
  text-decoration: none;
  font-weight: 600;
  font-size: var(--step-small);
  white-space: nowrap;
}

.tel-link svg { width: 1.05em; height: 1.05em; stroke: var(--color-accent-light); }

.menu-toggle {
  display: none;
  align-items: center;
  gap: var(--space-2xs);
  background: transparent;
  border: 1px solid var(--color-ink-line);
  color: var(--color-text-invert);
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: var(--step-tiny);
  padding: var(--space-2xs) var(--space-s);
  cursor: pointer;
}

.mobile-nav {
  display: none;
}

@media (max-width: 1180px) {
  .site-nav { display: none; }
  .site-header__actions .btn--primary { display: none; }
  .site-header__actions .tel-link__num { display: none; }
  .site-header__actions .tel-link { border: 1px solid var(--color-ink-line); padding: var(--space-2xs); }
  .site-header__actions .tel-link svg { width: 1.3em; height: 1.3em; }
  .menu-toggle { display: inline-flex; padding: var(--space-2xs); }
  .menu-toggle__label { display: none; }
  .menu-toggle .icon { width: 1.3em; height: 1.3em; }

  .mobile-nav {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 150;
    background: var(--color-ink);
    padding: var(--space-xl) var(--space-m);
    transform: translateX(100%);
    transition: transform 0.35s var(--ease);
    overflow-y: auto;
  }

  .mobile-nav.is-open { transform: translateX(0); }

  .mobile-nav__close {
    background: none;
    border: 1px solid var(--color-ink-line);
    color: var(--color-text-invert);
    padding: var(--space-2xs) var(--space-s);
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--space-l);
    cursor: pointer;
  }

  .mobile-nav ul {
    list-style: none;
    margin: 0 0 var(--space-l);
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-m);
  }

  .mobile-nav a {
    text-decoration: none;
    color: var(--color-text-invert);
    font-family: var(--font-display);
    text-transform: uppercase;
    font-size: var(--step-md);
    letter-spacing: 0.02em;
  }

  .mobile-nav .tel-link { font-size: var(--step-md); }
}

@media (min-width: 1181px) {
  .mobile-nav { display: none !important; }
}

/* Buttons
   ------------------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xs);
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: var(--step-small);
  text-decoration: none;
  padding: 0.9em 1.6em;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease), transform .15s var(--ease);
}

.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.btn--primary:hover { background: var(--color-accent-dark); border-color: var(--color-accent-dark); }

.btn--ghost {
  background: transparent;
  border-color: currentColor;
  color: inherit;
}

.btn--ghost:hover { background: rgba(255, 255, 255, 0.08); }

.on-light .btn--ghost:hover { background: rgba(21, 18, 15, 0.06); }

/* Icons
   ------------------------------------------------------------------------ */
.icon {
  width: 1.5rem;
  height: 1.5rem;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

/* Breadcrumb
   ------------------------------------------------------------------------ */
.breadcrumb {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
  padding: 0;
  margin: 0 0 var(--space-m);
  font-size: var(--step-tiny);
  color: var(--color-steel);
}

.breadcrumb a { text-decoration: none; color: var(--color-steel); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb li:not(:last-child)::after { content: '/'; margin-left: var(--space-2xs); color: var(--color-paper-line); }

/* Footer
   ------------------------------------------------------------------------ */
.site-footer {
  background: var(--color-ink);
  color: var(--color-text-invert);
  padding: var(--space-2xl) 0 var(--space-m);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: var(--space-xl) var(--space-m);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-ink-line);
}

.site-footer h2 {
  font-size: var(--step-md);
  margin-bottom: var(--space-2xs);
}

.site-footer h3 {
  font-size: var(--step-tiny);
  letter-spacing: 0.1em;
  color: var(--color-steel-light);
  margin-bottom: var(--space-s);
}

.site-footer p { color: var(--color-steel-light); }

.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.site-footer a {
  color: var(--color-text-invert);
  text-decoration: none;
}

.site-footer a:hover { color: var(--color-accent-light); }

.site-footer__bottom {
  padding-top: var(--space-m);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-s);
  font-size: var(--step-tiny);
  color: var(--color-steel-light);
}

.site-footer__bottom ul { flex-direction: row; gap: var(--space-m); }

@media (max-width: 800px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .site-footer__grid { grid-template-columns: 1fr; }
}

/* Formulare
   ------------------------------------------------------------------------ */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-m);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-3xs);
}

.form-field--wide { grid-column: 1 / -1; }

.form-field label {
  font-size: var(--step-tiny);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  color: var(--color-steel);
}

.on-dark .form-field label { color: var(--color-steel-light); }

.form-field input,
.form-field select,
.form-field textarea {
  font: inherit;
  padding: 0.85em 1em;
  border: 1.5px solid var(--color-paper-line);
  background: #fff;
  color: var(--color-text);
  border-radius: var(--radius-s);
}

.on-dark .form-field input,
.on-dark .form-field select,
.on-dark .form-field textarea {
  background: var(--color-ink-soft);
  border-color: var(--color-ink-line);
  color: var(--color-text-invert);
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: 3px solid var(--color-accent);
  outline-offset: 1px;
}

.form-field textarea { resize: vertical; min-height: 9rem; }

.form-hint {
  font-size: var(--step-tiny);
  color: var(--color-steel);
}

.form-honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

@media (max-width: 640px) {
  .form-grid { grid-template-columns: 1fr; }
}

/* Karten allgemein
   ------------------------------------------------------------------------ */
.card {
  background: #fff;
  border: 1px solid var(--color-paper-line);
  padding: var(--space-m);
}

.tag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
  padding: 0;
  margin: 0;
}

.tag {
  font-size: var(--step-tiny);
  border: 1px solid var(--color-paper-line);
  padding: 0.3em 0.75em;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.on-dark .tag { border-color: var(--color-ink-line); }