/* =====================================================================
   layout.css — Container, Grid, Header, Footer, Sektionen, Diagonal-Motiv
   ===================================================================== */

:root { --header-h: 76px; }
html { scroll-padding-top: calc(var(--header-h) + 1rem); }

/* ---------------------------------------------------------------------
   Container & Grid
   --------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--wide { max-width: var(--container-wide); }
.container--narrow { max-width: 920px; }

.grid { display: grid; gap: clamp(1.5rem, 4vw, 4rem); }

/* Asymmetrische Splits (wechselnde Richtungen) */
.split { display: grid; gap: clamp(2rem, 5vw, 5rem); align-items: center; }
@media (min-width: 900px) {
  .split--7-5 { grid-template-columns: 7fr 5fr; }
  .split--5-7 { grid-template-columns: 5fr 7fr; }
  .split--8-4 { grid-template-columns: 8fr 4fr; }
  .split--4-8 { grid-template-columns: 4fr 8fr; }
  .split--6-6 { grid-template-columns: 1fr 1fr; }
  /* Reihenfolge tauschen, ohne DOM-Reihenfolge zu ändern (a11y) */
  .split__media--first { order: -1; }
}

/* ---------------------------------------------------------------------
   Sektionen & Farbthemen
   --------------------------------------------------------------------- */
.section { position: relative; padding-block: var(--section-y); }
.section--flush-top { padding-top: 0; }
.section--tight { padding-block: clamp(3rem, 6vw, 5rem); }

.theme-ink        { background: var(--ink); color: var(--text-on-dark); }
.theme-anthracite { background: var(--anthracite); color: var(--text-on-dark); }
.theme-paper      { background: var(--paper); color: var(--text-on-light); }
.theme-paper-2    { background: var(--paper-2); color: var(--text-on-light); }

/* Feine Gold-Hairline als wiederkehrendes Trennmotiv */
.rule-gold {
  height: 1px; border: 0;
  background: linear-gradient(90deg, var(--gold) 0%, transparent 60%);
  opacity: 0.7;
}
.theme-paper .rule-gold,
.theme-paper-2 .rule-gold { background: linear-gradient(90deg, var(--gold-deep) 0%, transparent 60%); }

/* ---------------------------------------------------------------------
   Header
   --------------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-header);
  transition: background var(--dur) var(--ease-out),
              border-color var(--dur) var(--ease-out),
              backdrop-filter var(--dur) var(--ease-out);
  border-bottom: 1px solid transparent;
}
/* Lesbarkeits-Scrim über dem (dunklen) Hero */
.site-header::before {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, rgba(11,11,12,0.55), rgba(11,11,12,0));
  opacity: 1;
  transition: opacity var(--dur) var(--ease-out);
  pointer-events: none;
}
.site-header.is-scrolled {
  background: color-mix(in srgb, var(--ink) 88%, transparent);
  -webkit-backdrop-filter: blur(10px) saturate(140%);
  backdrop-filter: blur(10px) saturate(140%);
  border-bottom-color: var(--line-dark);
}
.site-header.is-scrolled::before { opacity: 0; }

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  height: var(--header-h);
  transition: height var(--dur) var(--ease-out);
}
.site-header.is-scrolled .site-header__inner { height: 64px; }

.site-header__actions { display: flex; align-items: center; gap: var(--space-4); }

/* ---------------------------------------------------------------------
   Desktop-Navigation
   --------------------------------------------------------------------- */
.nav { display: none; }
@media (min-width: 940px) { .nav { display: block; } }

.nav__list { display: flex; align-items: center; gap: clamp(1rem, 2vw, 2rem); }
.nav__link {
  position: relative;
  font-size: var(--fs-small);
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--text-on-dark);
  padding: 0.4rem 0;
  opacity: 0.85;
  transition: opacity var(--dur-fast) var(--ease-out);
}
.nav__link::after {
  content: "";
  position: absolute; left: 0; right: 100%; bottom: -2px;
  height: 1.5px; background: var(--gold);
  transition: right var(--dur) var(--ease-out);
}
.nav__link:hover { opacity: 1; }
.nav__link:hover::after { right: 0; }
.nav__link[aria-current="page"] { opacity: 1; color: var(--gold); }
.nav__link[aria-current="page"]::after { right: 0; }

/* ---------------------------------------------------------------------
   Hamburger / Mobile-Toggle
   --------------------------------------------------------------------- */
.nav-toggle {
  --bar: 22px;
  display: inline-flex;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
}
@media (min-width: 940px) { .nav-toggle { display: none; } }
.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  display: block;
  width: var(--bar); height: 2px;
  background: var(--text-on-dark);
  transition: transform var(--dur-fast) var(--ease-out),
              opacity var(--dur-fast) var(--ease-out);
}
.nav-toggle__bars { position: relative; }
.nav-toggle__bars::before { position: absolute; top: -7px; left: 0; }
.nav-toggle__bars::after  { position: absolute; top:  7px; left: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after  { transform: translateY(-7px) rotate(-45deg); }

/* ---------------------------------------------------------------------
   Mobile-Menü (Vollflächen-Overlay)
   --------------------------------------------------------------------- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background: var(--ink);
  display: grid;
  grid-template-rows: var(--header-h) 1fr auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--dur) var(--ease-out),
              transform var(--dur) var(--ease-out),
              visibility 0s linear var(--dur);
}
.mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition-delay: 0s;
}
.mobile-menu__list {
  align-self: center;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0 var(--gutter);
}
.mobile-menu__link {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 9vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-on-dark);
  padding: 0.5rem 0;
  display: flex;
  align-items: baseline;
  gap: 1rem;
  border-bottom: 1px solid var(--line-dark);
}
.mobile-menu__link .num { font-size: 0.9rem; color: var(--gold); opacity: 0.8; }
.mobile-menu__link[aria-current="page"] { color: var(--gold); }
.mobile-menu__footer {
  padding: var(--gutter);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  border-top: 1px solid var(--line-dark);
}
.mobile-menu__phone {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--gold);
}
body.menu-open { overflow: hidden; }

/* ---------------------------------------------------------------------
   Footer
   --------------------------------------------------------------------- */
.site-footer { background: var(--ink-2); color: var(--text-on-dark); border-top: 1px solid var(--line-dark); }
.site-footer__top {
  display: grid;
  gap: clamp(2.5rem, 5vw, 4rem);
  padding-block: clamp(3.5rem, 7vw, 6rem);
}
@media (min-width: 720px)  { .site-footer__top { grid-template-columns: 1.4fr 1fr 1fr; } }
@media (min-width: 1040px) { .site-footer__top { grid-template-columns: 1.6fr 1fr 1fr 1.2fr; } }

.site-footer h2 {
  font-family: var(--font-body);
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--gold);
  margin-bottom: var(--space-4);
}
.footer-links { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-links a { color: var(--muted-on-dark); font-size: var(--fs-small); transition: color var(--dur-fast) var(--ease-out); width: max-content; }
.footer-links a:hover { color: var(--text-on-dark); }

.footer-contact { font-size: var(--fs-small); color: var(--muted-on-dark); display: flex; flex-direction: column; gap: 0.5rem; }
.footer-contact a { color: var(--text-on-dark); }
.footer-contact .footer-phone { font-family: var(--font-display); font-size: 1.5rem; color: var(--gold); margin-bottom: 0.25rem; }

.site-footer__brandline { max-width: 34ch; color: var(--muted-on-dark); font-size: var(--fs-small); margin-top: var(--space-4); }

.site-footer__bottom {
  border-top: 1px solid var(--line-dark);
  padding-block: var(--space-5);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--muted-on-dark);
}
.site-footer__bottom nav { display: flex; gap: var(--space-5); flex-wrap: wrap; }
.site-footer__bottom a:hover { color: var(--text-on-dark); }

/* ---------------------------------------------------------------------
   Media-Frames + Diagonal-Motiv (aus der Brand-Vorlage)
   --------------------------------------------------------------------- */
.media {
  position: relative;
  overflow: hidden;
  background: var(--anthracite-2);
  border-radius: var(--radius-xs);
}
.media > img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--dur-slow) var(--ease-out); }
.media--tall  { aspect-ratio: 4 / 5; }
.media--wide  { aspect-ratio: 16 / 10; }
.media--square{ aspect-ratio: 1 / 1; }
.media--hero  { aspect-ratio: 3 / 4; }

/* Diagonale Unterkante – das Leitmotiv */
.media--diagonal { clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 2.75rem)); }
.media--diagonal-tr { clip-path: polygon(0 0, 100% 2.75rem, 100% 100%, 0 100%); }

/* Dünne Gold-Diagonale als Akzentlinie */
.diag-accent {
  position: absolute;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--gold), transparent);
  opacity: 0.5;
  transform: rotate(20deg);
  transform-origin: top;
  pointer-events: none;
}