:root {
  --bg: #fafaf9;
  --surface: #ffffff;
  --text: #1c1917;
  --muted: #78716c;
  --border: #e7e5e4;
  --accent: #ea580c;
  --accent-text: #ffffff;
  --radius: 14px;
  --max: 1040px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c0a09;
    --surface: #1c1917;
    --text: #f5f5f4;
    --muted: #a8a29e;
    --border: #292524;
    --accent: #fb923c;
    --accent-text: #1c1917;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0c0a09;
  --surface: #1c1917;
  --text: #f5f5f4;
  --muted: #a8a29e;
  --border: #292524;
  --accent: #fb923c;
  --accent-text: #1c1917;
  color-scheme: dark;
}

* { box-sizing: border-box; margin: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: inherit; }

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(8px);
}
.nav nav { display: flex; gap: 20px; align-items: center; }
.nav nav a { text-decoration: none; color: var(--muted); font-size: 0.95rem; }
.nav nav a:hover { color: var(--text); }
.logo {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  text-decoration: none;
}
.logo span { color: var(--accent); }

.icon-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 999px;
  width: 34px;
  height: 34px;
  cursor: pointer;
  font-size: 1rem;
}

main { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
section { padding: 72px 0; border-top: 1px solid var(--border); }
section.hero { border-top: 0; padding: 96px 0 72px; }

h1 { font-size: clamp(2.5rem, 8vw, 4.5rem); line-height: 1.05; letter-spacing: -0.03em; }
h2 { font-size: 1.75rem; margin-bottom: 24px; letter-spacing: -0.02em; }
.eyebrow { color: var(--accent); font-weight: 600; margin-bottom: 8px; }
.lead { font-size: 1.2rem; color: var(--muted); max-width: 560px; margin-top: 16px; }

.cta { display: flex; gap: 12px; margin-top: 32px; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-text);
  text-decoration: none;
  font-weight: 600;
  border: 1px solid var(--accent);
  transition: transform 0.15s;
}
.btn:hover { transform: translateY(-2px); }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--border); }

.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.filters button {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.9rem;
}
.filters button.active { background: var(--text); color: var(--bg); border-color: var(--text); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s, transform 0.4s, border-color 0.2s;
}
.card.visible { opacity: 1; transform: none; }
.card:hover { border-color: var(--accent); }
.card .thumb {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 30%, var(--surface)));
  object-fit: cover;
  width: 100%;
}
.card .body { padding: 18px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card h3 { font-size: 1.1rem; }
.card p { color: var(--muted); font-size: 0.95rem; flex: 1; }
.tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tags span { font-size: 0.75rem; padding: 2px 8px; border-radius: 6px; background: var(--bg); color: var(--muted); }
.links { display: flex; gap: 14px; margin-top: 4px; font-size: 0.9rem; font-weight: 600; }
.links a { color: var(--accent); text-decoration: none; }

.about p { max-width: 640px; color: var(--muted); }
.skills { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin-top: 20px; }
.skills li { padding: 6px 14px; border: 1px solid var(--border); border-radius: 999px; font-size: 0.9rem; }

#kontakt p { color: var(--muted); margin-bottom: 16px; }
.socials { display: flex; gap: 20px; margin-top: 24px; }
.socials a { color: var(--muted); }

footer { text-align: center; padding: 32px 16px; color: var(--muted); font-size: 0.85rem; border-top: 1px solid var(--border); }

@media (max-width: 560px) {
  .nav nav { gap: 14px; }
  .nav nav a { font-size: 0.85rem; }
  section { padding: 56px 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .card { transition: none; opacity: 1; transform: none; }
}