/* =========================================================================
   AERBE — Design & Development
   Design-System nach Moodboard (Playfair Display + Inter, Travertin-Palette)
   Name AERBE ist Arbeitstitel — bei finaler Marke per Suchen/Ersetzen tauschen.
   ========================================================================= */

:root {
  /* Palette (aus Moodboard) */
  --kalkweiss: #ede8df;
  --sand:      #dacebb;
  --greige:    #c4b7a2;
  --travertin: #cbb99e;
  --taupe:     #8b7a66;
  --walnuss:   #5a3b29;
  --anthrazit: #2a2622;

  --bg:      #f3efe8;
  --bg-tint: #ece6da;
  --ink:     #2a2622;
  --muted:   #8b7a66;
  --line:    #ddd5c8;
  --card:    #f8f5ee;

  --font-display: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  --page-max: 1360px;
  --gutter:   clamp(1.25rem, 4vw, 3.5rem);
  --section-y: clamp(3rem, 7vw, 6rem);
  --radius: 2px;
  --transition: 0.35s cubic-bezier(0.2,0.6,0.2,1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.08rem);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
p { margin: 0 0 1.1em; max-width: 62ch; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.14;
  margin: 0 0 0.5em;
  color: var(--ink);
}
h1 { font-size: clamp(2.1rem, 1.6rem + 2.4vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 1.4rem + 1.4vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 1.05rem + 0.6vw, 1.5rem); }

.wrap { max-width: var(--page-max); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section-y); }
.section--tint { background: var(--bg-tint); }
.rule { border: 0; border-top: 1px solid var(--line); margin: 0; }

.eyebrow {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
  margin-bottom: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  padding: 1em 1.6em;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background: transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.btn:hover { background: var(--ink); color: var(--bg); }
.btn--dark { background: var(--anthrazit); color: var(--kalkweiss); border-color: var(--anthrazit); }
.btn--dark:hover { background: var(--walnuss); border-color: var(--walnuss); }

.link-arrow {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  border-bottom: 1px solid transparent;
  transition: gap var(--transition), color var(--transition);
}
.link-arrow:hover { gap: 0.8em; color: var(--walnuss); }

/* ---- Header ---- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 2rem; min-height: 84px;
}
.brand { line-height: 1; }
.brand .word {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.16em;
}
.brand .sub {
  display: block;
  font-family: var(--font-body);
  font-size: 0.56rem;
  letter-spacing: 0.24em;
  color: var(--muted);
  margin-top: 0.35rem;
}
.nav-links { display: flex; gap: clamp(1.1rem, 2.4vw, 2.2rem); list-style: none; margin: 0; padding: 0; }
.nav-links a {
  font-size: 0.78rem; letter-spacing: 0.04em; color: var(--ink);
  transition: color var(--transition);
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--walnuss); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; }

@media (max-width: 780px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; inset: 84px 0 auto 0;
    flex-direction: column; gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem var(--gutter) 1.5rem;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.85rem 0; border-bottom: 1px solid var(--line); }
}

/* ---- Hero (Split) ---- */
.hero {
  display: grid;
  grid-template-columns: minmax(320px, 0.85fr) 1.3fr;
  align-items: stretch;
  min-height: min(78vh, 640px);
}
.hero__text {
  display: flex; flex-direction: column; justify-content: center;
  padding: clamp(2rem, 5vw, 4rem) var(--gutter);
  gap: 0.4rem;
}
.hero__text h1 { max-width: 14ch; }
.hero__media { position: relative; overflow: hidden; background: var(--greige); }
.hero__media img { width: 100%; height: 100%; object-fit: cover; }
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero__media { aspect-ratio: 4/3; }
}

/* ---- Studio-Dreier ---- */
.studio-head { display: grid; grid-template-columns: 1fr 1.6fr; gap: clamp(1.5rem,4vw,3rem); align-items: start; }
.studio-head p { color: var(--muted); }

.tri-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); margin-top: clamp(1.5rem,4vw,2.5rem); border: 1px solid var(--line); }
.tri-card { background: var(--card); padding: clamp(1.5rem, 3vw, 2.2rem); }
.tri-card .icon { width: 34px; height: 34px; margin-bottom: 1.2rem; color: var(--walnuss); }
.tri-card h3 { margin-bottom: 0.5rem; }
.tri-card p { color: var(--muted); font-size: 0.92rem; }
@media (max-width: 780px) { .tri-grid { grid-template-columns: 1fr; } .studio-head { grid-template-columns: 1fr; } }

/* ---- Leistungen + Arbeitsweise ---- */
.split2 { display: grid; grid-template-columns: 1fr 1.4fr; gap: clamp(2rem, 5vw, 4rem); }
@media (max-width: 900px) { .split2 { grid-template-columns: 1fr; } }

.check-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.9rem 1.5rem; margin-top: 1.5rem; }
.check-item { display: flex; gap: 0.7rem; align-items: flex-start; font-size: 0.88rem; }
.check-item svg { flex: none; width: 18px; height: 18px; margin-top: 0.15rem; color: var(--walnuss); }

.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1.2rem; margin-top: 1.5rem; }
.step .num {
  width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--taupe);
  display: grid; place-items: center; font-family: var(--font-display); font-size: 1rem;
  color: var(--walnuss); margin-bottom: 0.9rem;
}
.step h4 { font-family: var(--font-body); font-weight: 500; font-size: 0.85rem; margin-bottom: 0.4rem; }
.step p { font-size: 0.82rem; color: var(--muted); }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* ---- Projekte ---- */
.proj-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: clamp(1rem, 2.5vw, 1.4rem); margin-top: clamp(1.5rem, 4vw, 2.5rem); }
.proj-card { display: flex; flex-direction: column; }
.proj-card .thumb { aspect-ratio: 4/5; overflow: hidden; background: var(--greige); margin-bottom: 1.1rem; }
.proj-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.9s cubic-bezier(0.2,0.6,0.2,1); }
.proj-card:hover .thumb img { transform: scale(1.04); }
.proj-card h3 { margin-bottom: 0.4rem; }
.proj-card p { font-size: 0.88rem; color: var(--muted); margin-bottom: 0.8rem; }
@media (max-width: 900px) { .proj-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .proj-grid { grid-template-columns: 1fr; } }

/* ---- Kontakt-Band ---- */
.contact-band { display: grid; grid-template-columns: 1fr 1fr auto; gap: 2rem; align-items: center; }
.contact-band h2 { margin: 0; max-width: 14ch; }
.contact-meta { display: grid; gap: 0.6rem; font-size: 0.9rem; color: var(--muted); }
.contact-meta .row { display: flex; align-items: center; gap: 0.6rem; }
.contact-meta svg { width: 16px; height: 16px; color: var(--walnuss); flex: none; }
@media (max-width: 900px) { .contact-band { grid-template-columns: 1fr; text-align: left; } }

/* ---- Footer ---- */
.site-footer { background: var(--anthrazit); color: var(--sand); font-size: 0.82rem; letter-spacing: 0.02em; }
.site-footer a:hover { color: var(--kalkweiss); }
.site-footer .word { font-family: var(--font-display); font-size: 1.3rem; color: var(--kalkweiss); }

/* Material-Textur-Chips (Leistungen-Seite etc.) */
.mat-chip { aspect-ratio: 1/1; overflow: hidden; border-radius: var(--radius); }
.mat-chip img { width: 100%; height: 100%; object-fit: cover; }

.todo {
  background: #fff7d6; border: 1px dashed #c9a400; color: #6b5900;
  font-size: 0.72rem; padding: 0.35em 0.7em; border-radius: var(--radius);
  display: inline-block; margin: 0.4rem 0;
}
.narrow { max-width: 60ch; }
.stack > * + * { margin-top: 1rem; }

/* ---- Generische Hilfsklassen für Unterseiten ---- */
.lead { font-size: clamp(1.1rem, 1rem + 0.5vw, 1.4rem); line-height: 1.55; color: var(--ink); }
.center { text-align: center; }
.mt-l { margin-top: clamp(2rem, 5vw, 3.5rem); }
.grid { display: grid; gap: clamp(1.5rem, 4vw, 3rem); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 780px) { .grid--2, .grid--3 { grid-template-columns: 1fr; } }

.page-hero { padding-block: clamp(2.5rem, 6vw, 4.5rem) clamp(1.5rem, 4vw, 2.5rem); }

/* Footer (mehrspaltig, für Unterseiten) */
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; padding-block: clamp(2.5rem, 5vw, 4rem) 1.5rem; }
.footer-grid h4 { font-size: 0.68rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--taupe); margin-bottom: 0.9rem; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 0.55rem; }
.footer-grid a:hover { color: var(--kalkweiss); }
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; gap: 2rem; } }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.8rem; padding-top: 1.2rem; border-top: 1px solid rgba(255,255,255,0.12); font-size: 0.72rem; color: var(--taupe); }

/* Formular (Kontakt) */
.form { max-width: 640px; }
.field { margin-bottom: 1.5rem; display: flex; flex-direction: column; gap: 0.5rem; }
.field label { font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.field input, .field select, .field textarea {
  font-family: var(--font-body); font-size: 1rem; color: var(--ink);
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 0.85em 1em; transition: border-color var(--transition);
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--taupe); }
.field textarea { resize: vertical; min-height: 130px; }