/* ========== Base / Theme ========== */
:root{
  --bg: #0f1218;
  --surface: rgba(255,255,255,0.06);
  --surface-2: rgba(255,255,255,0.09);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.68);
  --line: rgba(255,255,255,0.12);

  /* Accent (Blue) */
  --accent: #3b82f6;
  --accent-2: #60a5fa;

  --shadow: 0 20px 60px rgba(0,0,0,0.35);
  --radius: 18px;
  --radius-sm: 12px;

  --max: 1100px;
  --pad: clamp(16px, 3vw, 28px);
  --h1: clamp(36px, 5vw, 58px);
  --h2: clamp(26px, 3vw, 34px);
}

@media (prefers-color-scheme: light) {
  :root{
    --bg: #f7f7f8;
    --surface: rgba(10,12,18,0.04);
    --surface-2: rgba(10,12,18,0.06);
    --text: rgba(10,12,18,0.92);
    --muted: rgba(10,12,18,0.66);
    --line: rgba(10,12,18,0.12);
    --shadow: 0 20px 60px rgba(10,12,18,0.12);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(1200px 700px at 20% 10%, rgba(59,130,246,0.22), transparent 55%),
              radial-gradient(900px 600px at 85% 20%, rgba(96,165,250,0.18), transparent 55%),
              var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a{ color: inherit; text-decoration: none; }
p{ margin: 0 0 14px; color: var(--muted); }
h1,h2,h3{ margin: 0 0 10px; color: var(--text); line-height: 1.15; }
h1{ font-size: var(--h1); letter-spacing: -0.02em; }
h2{ font-size: var(--h2); letter-spacing: -0.015em; }
h3{ font-size: 18px; }

.container{
  width: min(var(--max), calc(100% - 2*var(--pad)));
  margin: 0 auto;
}

.skip-link{
  position:absolute; left:-999px; top: 12px;
  background: var(--accent); color:#fff; padding: 10px 12px;
  border-radius: 10px;
}
.skip-link:focus{ left: 12px; z-index: 9999; }

/* ========== Header ========== */
.site-header{
  position: sticky;
  top:0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  border-bottom: 1px solid var(--line);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 14px 0;
  gap: 12px;
  transition: padding 180ms ease;
}

.site-header.shrink .header-inner{ padding: 10px 0; }

.brand{
  display:flex; align-items:center; gap: 10px;
  font-weight: 650;
  letter-spacing: 0.02em;
}
.brand-mark{
  width: 10px; height: 10px; border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent) 18%, transparent);
}
.brand-text{ opacity: 0.95; }

.nav{
  display:flex;
  gap: 18px;
  align-items:center;
  color: var(--muted);
}
.nav a{
  padding: 8px 10px;
  border-radius: 10px;
  transition: background 180ms ease, color 180ms ease;
}
.nav a:hover{
  background: var(--surface);
  color: var(--text);
}

.nav-toggle{
  display:none;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 12px;
  padding: 10px;
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width: 20px;
  height: 2px;
  background: var(--text);
  margin: 4px 0;
  opacity: 0.85;
}

.mobile-nav{
  display:none;
  padding: 10px var(--pad) 16px;
  border-top: 1px solid var(--line);
}
.mobile-nav a{
  display:block;
  padding: 10px 8px;
  border-radius: 10px;
  color: var(--muted);
}
.mobile-nav a:hover{ background: var(--surface); color: var(--text); }

@media (max-width: 820px){
  .nav{ display:none; }
  .nav-toggle{ display:inline-block; }
  .mobile-nav{ display:block; }
}

/* ========== Hero ========== */
.hero{
  padding: clamp(48px, 7vw, 90px) 0 26px;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(18px, 3vw, 30px);
  align-items: stretch;
}
@media (max-width: 920px){
  .hero-grid{ grid-template-columns: 1fr; }
}

.eyebrow{
  display:inline-block;
  color: color-mix(in srgb, var(--accent) 90%, var(--text));
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 20%, var(--line));
  padding: 8px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.lead{
  font-size: clamp(16px, 2vw, 18px);
  max-width: 52ch;
  color: var(--muted);
}

.hero-actions{
  display:flex;
  gap: 12px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 11px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  cursor:pointer;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}
.btn:hover{ transform: translateY(-1px); background: var(--surface-2); }
.btn:active{ transform: translateY(0px); }

.btn.primary{
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 92%, #ffffff 0%), var(--accent));
  border-color: color-mix(in srgb, var(--accent) 35%, var(--line));
  color: #fff;
  box-shadow: 0 10px 26px color-mix(in srgb, var(--accent) 20%, transparent);
}
.btn.primary:hover{
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent-2) 92%, #ffffff 0%), var(--accent-2));
}

.btn.ghost{
  background: transparent;
  border-color: color-mix(in srgb, var(--accent) 25%, var(--line));
  color: color-mix(in srgb, var(--accent) 80%, var(--text));
}

.hero-meta{
  display:flex;
  align-items:center;
  gap: 10px;
  margin-top: 18px;
  color: var(--muted);
}
.meta-pill{
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
}
.meta-dot{ opacity: 0.5; }

.hero-card{
  position:relative;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface), transparent);
  box-shadow: var(--shadow);
  overflow:hidden;
  min-height: 320px;
}

.hero-image{
  position:absolute;
  inset:0;
  /* Hier später dein Bild setzen (z.B. assets/hero.jpg) */
  background-image:
    linear-gradient(120deg, rgba(59,130,246,0.22), transparent 45%),
    radial-gradient(900px 500px at 20% 20%, rgba(96,165,250,0.16), transparent 55%),
    url("assets/hero.jpg");
  background-size: cover;
  background-position: center;
  filter: saturate(1.05) contrast(1.03);
  transform: scale(1.03);
}

.hero-card-glow{
  position:absolute;
  inset:-30%;
  background: radial-gradient(circle at 30% 30%, rgba(59,130,246,0.18), transparent 45%);
  pointer-events:none;
  mix-blend-mode: screen;
  transform: translate3d(0,0,0);
}

/* ========== Sections ========== */
.section{
  padding: clamp(46px, 6vw, 78px) 0;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap: 16px;
  margin-bottom: 18px;
}
.section-sub{ max-width: 64ch; }
@media (max-width: 720px){
  .section-head{ flex-direction: column; align-items:flex-start; }
}

.divider{
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
  margin-top: 36px;
}

/* ========== About ========== */
.about-grid{
  display:grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
  margin-top: 12px;
}
@media (max-width: 900px){
  .about-grid{ grid-template-columns: 1fr; }
}
.about-text p{ color: var(--muted); }

.about-tags{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.tag{
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
}

.info-card{
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 16px;
}
.info-card ul{
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

/* ========== Project Cards ========== */
.cards{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 12px;
}
@media (max-width: 1000px){
  .cards{ grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px){
  .cards{ grid-template-columns: 1fr; }
}
.card{
  position:relative;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface), transparent);
  padding: 16px;
  box-shadow: 0 14px 40px rgba(0,0,0,0.18);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
  overflow:hidden;
}
.card:hover{
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--line));
  background: linear-gradient(180deg, var(--surface-2), transparent);
}
.card::after{
  content:"";
  position:absolute;
  inset:-40%;
  background: radial-gradient(circle at 30% 25%, rgba(59,130,246,0.16), transparent 38%);
  opacity: 0;
  transition: opacity 180ms ease;
}
.card:hover::after{ opacity: 1; }

.card-icon{ font-size: 22px; margin-bottom: 10px; }
.card p{ margin-bottom: 12px; }
.card-link{
  display:inline-block;
  color: color-mix(in srgb, var(--accent) 80%, var(--text));
  font-weight: 700;
}

/* ========== Quote ========== */
.quote{
  padding-top: 0;
}
blockquote{
  margin:0;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface), transparent);
  padding: 18px 18px 14px;
  box-shadow: var(--shadow);
}
blockquote p{
  margin:0;
  font-size: clamp(18px, 2vw, 22px);
  color: var(--text);
}
blockquote footer{
  margin-top: 10px;
  color: var(--muted);
  font-size: 14px;
}

/* ========== Contact ========== */
.contact-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 12px;
}
@media (max-width: 860px){
  .contact-grid{ grid-template-columns: 1fr; }
}
.contact-card{
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 16px;
  box-shadow: 0 14px 40px rgba(0,0,0,0.14);
}
.contact-card.subtle{
  background: linear-gradient(180deg, var(--surface), transparent);
}
.contact-actions{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.tiny{
  font-size: 13px;
  color: var(--muted);
  margin-top: 10px;
}
.mini-list{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 12px;
}
.mini-pill{
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-size: 13px;
}

/* ========== Footer ========== */
.site-footer{
  padding: 20px 0;
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
}
.footer-inner{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap: 10px;
  color: var(--muted);
}
.footer-links{
  display:flex;
  gap: 12px;
}
.footer-links a{
  padding: 6px 8px;
  border-radius: 10px;
}
.footer-links a:hover{ background: var(--surface); color: var(--text); }

/* ========== Reveal on Scroll ========== */
.reveal{
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 600ms ease, transform 600ms ease;
}
.reveal.in{
  opacity: 1;
  transform: translateY(0);
}

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