/* Nur System-Fonts: keine externen Requests (DSGVO). */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0b0e12;
  --bg2:       #11161c;
  --bg3:       #182029;
  --surface:   #1c2530;
  --border:    rgba(232,160,74,0.15);
  --border-hi: rgba(232,160,74,0.38);
  --accent:    #e8a04a;
  --accent-dim:#c08a42;
  --glow:      rgba(232,160,74,0.08);
  --text:      #e6ebf0;
  --text-mid:  #9aa8b6;
  --text-dim:  #8291a0;
  --key:       #e8a04a;
  --val:       #6cc4b8;
  --mono: ui-monospace, 'SF Mono', 'JetBrains Mono', Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

html { scroll-behavior: smooth; scroll-padding-top: 4rem; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* CRT-Scanlines über allem, klickt durch */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 200;
  background:
    radial-gradient(ellipse at center, transparent 60%, rgba(0,0,0,0.2) 100%),
    repeating-linear-gradient(0deg, rgba(232,160,74,0.035) 0 1px, transparent 1px 3px);
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -3rem;
  z-index: 300;
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--mono);
  font-size: 0.8rem;
  text-decoration: none;
}
.skip-link:focus { top: 1rem; }

a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 3rem;
  background: rgba(11,14,18,0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.06em;
}
.dim, .nav-logo .dim { color: var(--text-dim); }
.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-mid);
  text-decoration: none;
  letter-spacing: 0.08em;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }

/* HERO */
.hero {
  min-height: 88vh;
  display: flex;
  align-items: center;
  padding: 8rem 3rem 5rem;
  position: relative;
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  top: -200px; right: -150px;
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(232,160,74,0.06) 0%, transparent 68%);
  pointer-events: none;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  align-items: center;
  position: relative;
}
.hero-eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.hero-eyebrow::before { content: ''; width: 28px; height: 1px; background: var(--accent); flex-shrink: 0; }
h1 {
  font-size: clamp(2.4rem, 4.5vw, 3.4rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin-bottom: 0.5rem;
}
h1 .accent { color: var(--accent); }
.hero-subtitle {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 1.75rem;
}
.hero-desc {
  font-size: 0.97rem;
  color: var(--text-mid);
  line-height: 1.85;
  margin-bottom: 2.5rem;
  max-width: 480px;
}
.hero-ctas { display: flex; gap: 1rem; flex-wrap: wrap; }

.btn-primary, .btn-ghost {
  display: inline-flex;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  padding: 0.78rem 1.6rem;
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.2s, background 0.2s, border-color 0.2s, transform 0.15s;
}
.btn-primary { background: var(--accent); color: var(--bg); font-weight: 600; }
.btn-primary:hover { opacity: 0.85; transform: translateY(-1px); }
.btn-ghost { color: var(--accent); border: 1px solid var(--border-hi); }
.btn-ghost:hover { background: var(--glow); border-color: var(--accent); transform: translateY(-1px); }

/* TERMINAL */
.terminal-card { background: var(--bg2); border: 1px solid var(--border-hi); min-width: 0; }
.term-bar {
  background: var(--bg3);
  padding: 0.55rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  border-bottom: 1px solid var(--border);
}
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-r { background: #d0554a; }
.dot-y { background: #e8a04a; }
.dot-g { background: #5fb878; }
.term-name { font-family: var(--mono); font-size: 0.68rem; color: var(--text-dim); margin-left: 0.5rem; }
.term-body {
  padding: 1.25rem 1.5rem 1.5rem;
  font-family: var(--mono);
  font-size: 0.76rem;
  line-height: 1.95;
  overflow-x: auto;
}
.t-prompt { color: var(--accent); }
.t-cmd    { color: var(--text); }
.t-out    { color: var(--text-mid); }
.t-key    { color: var(--key); }
.t-val    { color: var(--val); }
.t-ok     { color: #5fb878; }
.cursor {
  display: inline-block;
  width: 8px; height: 13px;
  background: var(--accent);
  vertical-align: text-bottom;
  animation: blink 1.1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .cursor { animation: none; }
}

/* SECTIONS */
section { padding: 5.5rem 3rem; }
section.alt { background: var(--bg2); }
.inner { max-width: 1100px; margin: 0 auto; }
.sec-eyebrow {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--accent);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}
.sec-title { font-size: 1.75rem; font-weight: 700; margin-bottom: 3rem; letter-spacing: -0.015em; }
.divider { border: none; border-top: 1px solid var(--border); }

/* STACK */
.stack-wrap {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}
.stack-cell, .project-card { border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.stack-cell { background: var(--bg); padding: 1.3rem 1rem; text-align: center; transition: background 0.2s; }
.stack-cell:hover { background: var(--surface); }
.stack-icon { font-size: 1.3rem; display: block; margin-bottom: 0.5rem; }
.stack-label { font-family: var(--mono); font-size: 0.68rem; color: var(--text-mid); }

/* STATIONEN */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}
.project-card {
  background: var(--bg2);
  padding: 1.75rem;
  position: relative;
  transition: background 0.2s;
}
.project-card:hover { background: var(--surface); }
.project-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.project-card:hover::after { transform: scaleX(1); }
.proj-num { font-family: var(--mono); font-size: 0.62rem; color: var(--text-dim); letter-spacing: 0.1em; margin-bottom: 0.9rem; }
.proj-title { font-size: 0.97rem; font-weight: 600; margin-bottom: 0.3rem; }
.proj-co { font-family: var(--mono); font-size: 0.68rem; color: var(--accent-dim); margin-bottom: 0.9rem; }
.proj-desc { font-size: 0.83rem; color: var(--text-mid); line-height: 1.65; }
.proj-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1rem; }
.tag {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 0.2rem 0.55rem;
  transition: color 0.2s, border-color 0.2s;
}
.project-card:hover .tag { color: var(--accent-dim); border-color: var(--border-hi); }

/* ABOUT */
.about-split { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 5rem; align-items: start; }
.about-text p { color: var(--text-mid); font-size: 0.95rem; margin-bottom: 1.1rem; line-height: 1.85; }
.about-text .about-loc { font-family: var(--mono); font-size: 0.78rem; color: var(--text-dim); margin-top: 1.5rem; }
.certs { display: flex; flex-direction: column; gap: 0.6rem; }
.cert { background: var(--bg2); border: 1px solid var(--border); border-left: 3px solid var(--accent); padding: 0.85rem 1.1rem; }
.cert strong { display: block; font-size: 0.83rem; font-weight: 600; margin-bottom: 0.2rem; }
.cert span { font-family: var(--mono); font-size: 0.7rem; color: var(--text-dim); }

/* CONTACT */
.contact-box { border: 1px solid var(--border-hi); display: grid; grid-template-columns: 1fr 1fr; }
.contact-left { padding: 3rem; border-right: 1px solid var(--border); }
.contact-right { padding: 3rem; }
.c-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 1.3rem 0 0.3rem;
}
.c-label:first-child { margin-top: 0; }
.c-val { font-size: 0.93rem; overflow-wrap: anywhere; }
.c-val.dim { color: var(--text-mid); }
.c-val a { color: var(--accent); text-decoration: none; }
.c-val a:hover { opacity: 0.75; }
.contact-right p { font-size: 0.9rem; color: var(--text-mid); line-height: 1.85; margin-bottom: 2rem; }

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 3rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
footer p { font-family: var(--mono); font-size: 0.67rem; color: var(--text-dim); }
footer .f-logo { color: var(--accent); }
footer a { color: var(--text-mid); }
footer a:hover { color: var(--accent); }

/* IMPRESSUM */
.impressum-box { max-width: 680px; font-size: 0.85rem; color: var(--text-mid); line-height: 1.8; }
.impressum-box h3 {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 1.75rem 0 0.5rem;
}
.impressum-box h3:first-child { margin-top: 0; }
.impressum-box a { color: var(--accent); }

/* RESPONSIVE */
@media (max-width: 820px) {
  nav { padding: 1rem; }
  .nav-links { gap: 1rem; }
  .hero { padding: 6.5rem 1rem 3.5rem; min-height: auto; }
  .hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  section { padding: 3.5rem 1rem; }
  .about-split { grid-template-columns: 1fr; gap: 2.5rem; }
  .contact-box { grid-template-columns: 1fr; }
  .contact-left { border-right: none; border-bottom: 1px solid var(--border); padding: 2rem; }
  .contact-right { padding: 2rem; }
  footer { padding: 1.5rem 1rem; }
}
@media (max-width: 520px) {
  html { scroll-padding-top: 6rem; }
  nav { flex-wrap: wrap; row-gap: 0.4rem; }
  .nav-logo { font-size: 0.75rem; }
  .nav-links { gap: 1.25rem; }
}