/* ============ Tokens ============ */
:root{
  --bg: #0E1620;
  --bg-elevated: #141F2B;
  --bg-elevated-2: #182430;
  --border: #24323F;
  --text: #EAEFF3;
  --text-muted: #8FA1AF;
  --accent: #5EEAD4;
  --accent-strong: #2DD4BF;
  --status-green: #4ADE80;
  --status-amber: #FBBF24;

  --font-display: 'Space Grotesk', 'Segoe UI', sans-serif;
  --font-body: 'IBM Plex Sans', 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --wrap: 1080px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a{ color: inherit; }

.mono{ font-family: var(--font-mono); }
.small{ font-size: 0.8rem; }
.accent{ color: var(--accent); }

/* subtle scanline atmosphere */
.scanline{
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255,255,255,0.012) 0px,
    rgba(255,255,255,0.012) 1px,
    transparent 1px,
    transparent 3px
  );
  mix-blend-mode: overlay;
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

/* ============ Language toggle ============ */
[data-lang-mode="de"] .lang-en{ display:none; }
[data-lang-mode="en"] .lang-de{ display:none; }

/* ============ Header ============ */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(14,22,32,0.82);
  border-bottom: 1px solid var(--border);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height: 64px;
}
.logo{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  text-decoration:none;
  letter-spacing: 0.02em;
}
.main-nav{
  display:flex;
  gap: 28px;
}
.main-nav a{
  text-decoration:none;
  color: var(--text-muted);
  font-size: 0.92rem;
  transition: color .15s ease;
}
.main-nav a:hover, .main-nav a:focus-visible{ color: var(--text); }

.lang-toggle{
  font-family: var(--font-mono);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 999px;
  padding: 6px 12px;
  cursor:pointer;
  font-size: 0.8rem;
  display:flex;
  align-items:center;
  gap: 4px;
}
.lang-toggle .sep{ opacity:0.4; }
.lang-toggle .lang-opt{ padding: 2px 4px; border-radius: 999px; }
[data-lang-mode="de"] .lang-toggle .lang-opt[data-val="de"],
[data-lang-mode="en"] .lang-toggle .lang-opt[data-val="en"]{
  color: var(--accent);
  background: rgba(94,234,212,0.1);
}
.lang-toggle:focus-visible{ outline: 2px solid var(--accent); outline-offset: 2px; }

/* ============ Hero ============ */
.hero{
  padding: 96px 0 80px;
  border-bottom: 1px solid var(--border);
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 56px;
  align-items: start;
}
.boot-line{
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  margin: 0 0 18px;
}
.caret{
  display:inline-block;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink{ 50%{ opacity:0; } }

.hero-title{
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.05;
  margin: 0 0 10px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.hero-role{
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--text-muted);
  margin: 0 0 22px;
}
.hero-tagline{
  max-width: 46ch;
  color: var(--text-muted);
  margin: 0 0 32px;
  font-size: 1.02rem;
}
.hero-actions{
  display:flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 12px 22px;
  border-radius: 8px;
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover{ transform: translateY(-1px); }
.btn:focus-visible{ outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-primary{
  background: var(--accent);
  color: #06201C;
  font-weight: 600;
}
.btn-primary:hover{ background: var(--accent-strong); }
.btn-ghost{
  border-color: var(--border);
  color: var(--text);
  background: transparent;
}
.btn-ghost:hover{ border-color: var(--accent); }

/* status panel — "neofetch card" */
.status-panel{
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 22px 22px;
}
.status-panel-head{
  display:flex;
  align-items:center;
  gap: 10px;
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.dot{
  width: 8px; height: 8px;
  border-radius: 50%;
  display:inline-block;
}
.dot-online{
  background: var(--status-green);
  box-shadow: 0 0 0 3px rgba(74,222,128,0.15);
}
.status-list{
  list-style:none;
  margin:0; padding:0;
  display:flex;
  flex-direction:column;
  gap: 10px;
  font-size: 0.85rem;
}
.status-list li{
  display:flex;
  justify-content:space-between;
  gap: 12px;
}
.status-list .k{ color: var(--text-muted); }
.status-list .v{ color: var(--text); text-align:right; }
.status-available{ color: var(--status-green) !important; }

/* ============ Sections ============ */
.section{ padding: 76px 0; border-bottom: 1px solid var(--border); }
.section-alt{ background: var(--bg-elevated); }
.eyebrow{
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  margin: 0 0 10px;
}
.section-title{
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin: 0 0 32px;
  font-weight: 600;
}

.about-body p{
  max-width: 68ch;
  color: var(--text-muted);
  margin: 0 0 18px;
  font-size: 1.02rem;
}
.about-body p:last-child{ margin-bottom:0; }

/* ============ Skills ============ */
.skills-grid{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 48px;
}
.skill-card{
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}
.skill-head{
  font-size: 0.82rem;
  color: var(--accent);
  margin: 0 0 14px;
  letter-spacing: 0.02em;
}
.tag-list{
  list-style:none;
  margin:0; padding:0;
  display:flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text);
}
.tag-list li{
  padding-left: 14px;
  position: relative;
}
.tag-list li::before{
  content: "";
  position:absolute;
  left:0; top: 0.6em;
  width: 5px; height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

.lang-panel{
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px 26px;
}
.bar-list{
  list-style:none;
  margin: 14px 0 0;
  padding: 0;
  display:flex;
  flex-direction: column;
  gap: 14px;
}
.bar-list li{
  display:grid;
  grid-template-columns: 90px 1fr 140px;
  align-items:center;
  gap: 16px;
  font-size: 0.85rem;
}
.bar-label{ color: var(--text); }
.bar{
  height: 6px;
  background: var(--bg-elevated-2);
  border-radius: 999px;
  overflow:hidden;
  border: 1px solid var(--border);
}
.bar-fill{
  display:block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent-strong), var(--accent));
  border-radius: 999px;
}
.bar-value{ color: var(--text-muted); text-align:right; }

/* ============ Timeline ============ */
.timeline{
  list-style:none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--border);
}
.timeline li{
  position: relative;
  padding: 0 0 30px 28px;
}
.timeline li::before{
  content:"";
  position:absolute;
  left: -5px; top: 4px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--bg);
}
.section-alt .timeline li::before{ box-shadow: 0 0 0 3px var(--bg-elevated); }
.timeline li:last-child{ padding-bottom: 0; }
.tl-date{
  display:block;
  color: var(--accent);
  font-size: 0.78rem;
  margin-bottom: 6px;
}
.tl-title{
  margin: 0 0 2px;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text);
}
.tl-org{
  margin: 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.more-timeline{
  margin-top: 36px;
  border-top: 1px solid var(--border);
  padding-top: 24px;
}
.more-timeline summary{
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.85rem;
  list-style: none;
}
.more-timeline summary::-webkit-details-marker{ display:none; }
.more-timeline summary::before{
  content: "+ ";
  color: var(--accent);
}
.more-timeline[open] summary::before{ content: "− "; }
.more-timeline .timeline{ margin-top: 24px; }

/* ============ Contact ============ */
.contact-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items:start;
}
.contact-intro{
  color: var(--text-muted);
  max-width: 42ch;
}
.contact-list{
  list-style:none;
  margin:0; padding:0;
  display:flex;
  flex-direction:column;
  gap: 18px;
}
.contact-list li{
  display:flex;
  justify-content:space-between;
  border-bottom: 1px solid var(--border);
  padding-bottom: 14px;
  font-size: 0.92rem;
}
.contact-list .k{ color: var(--text-muted); }
.contact-list a{ text-decoration:none; color: var(--text); }
.contact-list a:hover{ color: var(--accent); }

/* ============ Footer ============ */
.site-footer{ padding: 28px 0; }
.footer-inner{
  display:flex;
  justify-content:space-between;
  color: var(--text-muted);
}

/* ============ Responsive ============ */
@media (max-width: 860px){
  .main-nav{ display:none; }
  .hero-grid{ grid-template-columns: 1fr; }
  .skills-grid{ grid-template-columns: 1fr 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
  .bar-list li{ grid-template-columns: 70px 1fr; }
  .bar-value{ display:none; }
}
@media (max-width: 520px){
  .skills-grid{ grid-template-columns: 1fr; }
  .hero{ padding: 64px 0 56px; }
  .section{ padding: 56px 0; }
}