/* Hephaistion — software for mosaics and finance */
:root {
  --bg: #faf9f7;
  --bg-dark: #14161a;
  --ink: #1c1e22;
  --ink-soft: #5b6068;
  --line: #e3e0da;
  --accent: #c2571b;
  --accent-soft: #f3e2d3;
  --radius: 10px;
  --maxw: 1080px;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", sans-serif;
  color: var(--ink);
  background-color: var(--bg);
  /* dezente Mosaik-Struktur in Weißabstufungen, fixiert */
  background-image: url("../images/bg-structure-strong.webp");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  background-repeat: no-repeat;
  line-height: 1.65;
}

img, video { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Layout ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 249, 247, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; min-height: 60px;
}
.brand {
  font-weight: 700; font-size: 1.05rem; letter-spacing: 0.04em;
  color: var(--ink);
}
.brand:hover { text-decoration: none; }
.brand .dot { color: var(--accent); }

.nav { display: flex; gap: 22px; flex-wrap: wrap; }
.nav a {
  color: var(--ink-soft); font-size: 0.95rem; letter-spacing: 0.02em;
  text-transform: lowercase;
}
.nav a:hover { color: var(--ink); text-decoration: none; border-bottom: 2px solid var(--accent); }
.nav a[aria-current="page"] { color: var(--ink); border-bottom: 2px solid var(--accent); }

.site-footer {
  margin-top: 80px; border-top: 1px solid var(--line);
  padding: 28px 0 40px; color: var(--ink-soft); font-size: 0.88rem;
  background: rgba(250, 249, 247, 0.88);
}
.site-footer .wrap { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* ---------- Typo ---------- */
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.01em; }

.page-title {
  font-size: clamp(2rem, 4.5vw, 3rem); margin: 48px 0 10px;
}
.page-sub { color: var(--ink-soft); margin: 0 0 36px; font-size: 1.05rem; }

section.block { margin: 56px 0; }
section.block > h2 {
  font-size: 1.45rem; margin: 0 0 18px; padding-bottom: 10px;
  border-bottom: 2px solid var(--accent); display: inline-block;
}

.lede { font-size: 1.1rem; max-width: 62ch; }

/* ---------- Hero (index) ---------- */
.hero {
  position: relative; color: #fff;
  padding: 130px 0 150px;
  background: linear-gradient(rgba(18, 20, 24, 0.55), rgba(18, 20, 24, 0.68)),
    url("../images/hero-mosaic.webp") center / cover no-repeat;
}
.hero h1 { font-size: clamp(2.2rem, 5.5vw, 3.6rem); margin: 0 0 14px; }
.hero p { font-size: 1.15rem; max-width: 56ch; color: #d9d9d9; margin: 0 0 26px; }

.btn {
  display: inline-block; padding: 11px 22px; border-radius: var(--radius);
  background: var(--accent); color: #fff; font-weight: 600;
  border: 1px solid transparent; transition: background 0.15s;
}
.btn:hover { background: #a94915; color: #fff; text-decoration: none; }
.btn.ghost { background: transparent; border-color: rgba(255,255,255,0.55); color: #fff; }
.btn.ghost:hover { background: rgba(255,255,255,0.12); }

/* ---------- Cards (index) ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 22px; margin: 40px 0; }
.card {
  background: rgba(255, 255, 255, 0.92); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px; display: flex; flex-direction: column; gap: 10px;
  transition: box-shadow 0.15s, transform 0.15s;
}
.card:hover { box-shadow: 0 6px 22px rgba(28, 30, 34, 0.1); text-decoration: none; transform: translateY(-2px); }
.card h3 { margin: 0; font-size: 1.15rem; }
.card p { margin: 0; color: var(--ink-soft); font-size: 0.95rem; flex: 1; }
.card .more { font-weight: 600; font-size: 0.92rem; }

/* ---------- Medien-Galerien ---------- */
.gallery { display: grid; gap: 18px; margin: 22px 0; }
.gallery.cols-2 { grid-template-columns: repeat(2, 1fr); }
.gallery.cols-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 760px) {
  .gallery.cols-2, .gallery.cols-3 { grid-template-columns: 1fr; }
}

figure { margin: 0; }
figure img { border-radius: var(--radius); border: 1px solid var(--line); background: #fff; }
figcaption {
  margin-top: 8px; font-size: 0.86rem; color: var(--ink-soft);
  text-align: center;
}
figure.full { max-width: 860px; }
figure.medium { max-width: 620px; }

figure.video video { border-radius: var(--radius); border: 1px solid var(--line); }
figure.video figcaption { text-align: left; }

.embed-video {
  position: relative; padding-bottom: 56.25%; height: 0;
  max-width: 860px; border-radius: var(--radius); overflow: hidden;
}
.embed-video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* ---------- Steps (mosaics) ---------- */
.steps { display: grid; gap: 26px; margin: 30px 0; }
.step { display: grid; grid-template-columns: 56px 1fr; gap: 18px; align-items: start; }
.step .num {
  font-family: var(--mono); font-size: 0.95rem; color: var(--accent);
  border: 1px solid var(--accent); border-radius: 50%;
  width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
}
.step h3 { margin: 4px 0 8px; font-size: 1.05rem; }
.step p { margin: 0 0 14px; color: var(--ink-soft); font-size: 0.95rem; }
@media (max-width: 600px) {
  .step { grid-template-columns: 40px 1fr; gap: 12px; }
  .step .num { width: 32px; height: 32px; font-size: 0.8rem; }
}

/* ---------- Finance charts ---------- */
.chart-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; margin: 30px 0; }
@media (max-width: 760px) { .chart-grid { grid-template-columns: 1fr; } }
.chart-grid figure img { width: 100%; }

/* ---------- About ---------- */
.about-cols { display: grid; grid-template-columns: 2fr 1fr; gap: 40px; align-items: start; }
@media (max-width: 760px) { .about-cols { grid-template-columns: 1fr; } }
.fact-list { list-style: none; margin: 0; padding: 0; }
.fact-list li { padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 0.95rem; }
.fact-list li:last-child { border-bottom: 0; }
.fact-list .k { color: var(--ink-soft); display: block; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; }

.github-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 0.88rem;
  background: var(--accent-soft); border-radius: var(--radius);
  padding: 8px 14px; color: var(--ink);
}
.github-link:hover { text-decoration: none; background: #ecd2bb; }

/* ---------- Contact placeholder ---------- */
.contact-empty {
  border: 1px dashed var(--line); border-radius: var(--radius);
  padding: 60px 24px; text-align: center; color: var(--ink-soft);
  margin-top: 40px;
}