@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600;700&family=Syne:wght@400;700;800&display=swap');

/* ── Variablen ── */
:root {
  --bg:       #0d0f14;
  --surface:  #151820;
  --surface2: #1d2130;
  --border:   #272c3f;
  --accent:   #00d4ff;
  --accent2:  #7c3aed;
  --green:    #22c55e;
  --red:      #ef4444;
  --orange:   #f59e0b;
  --text:     #f0f2f8;
  --muted:    #6b7896;
  --mono:     'JetBrains Mono', monospace;
  --sans:     'Syne', sans-serif;
  --radius:   16px;
  --max:      1160px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* ── Nav ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,15,20,.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -.5px;
  white-space: nowrap;
}
.nav-logo span { color: var(--accent); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}
.nav-links a {
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--muted);
  transition: color .2s, background .2s;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text);
  background: var(--surface2);
}
.nav-cta {
  background: var(--accent);
  color: var(--bg) !important;
  padding: 10px 20px !important;
  border-radius: 12px !important;
}
.nav-cta:hover { opacity: .88; background: var(--accent) !important; }
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  flex-direction: column;
  gap: 5px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: .3s;
}
@media (max-width: 900px) {
  .nav-hamburger { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 12px 16px 20px;
    gap: 2px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { display: block; width: 100%; }
}

/* ── Footer ── */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 56px 24px 32px;
  margin-top: 80px;
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
}
.footer-brand .logo {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 10px;
}
.footer-brand .logo span { color: var(--accent); }
.footer-brand p {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  line-height: 1.7;
}
.footer-col h4 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer-col ul a {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  transition: color .2s;
}
.footer-col ul a:hover { color: var(--accent); }
.footer-bottom {
  max-width: var(--max);
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
}
@media (max-width: 640px) {
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 14px;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
  border: none;
  transition: all .2s;
  text-decoration: none;
}
.btn-primary {
  background: var(--accent);
  color: var(--bg);
}
.btn-primary:hover { opacity: .88; transform: translateY(-1px); box-shadow: 0 8px 32px rgba(0,212,255,.25); }
.btn-secondary {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--border); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent);
}
.btn-ghost:hover { background: rgba(0,212,255,.08); transform: translateY(-1px); }
.btn-sm { padding: 10px 20px; font-size: 13px; border-radius: 10px; }

/* ── Section Layout ── */
.section { padding: 80px 24px; }
.section-sm { padding: 48px 24px; }
.container { max-width: var(--max); margin: 0 auto; }
.section-label {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(0,212,255,.08);
  border: 1px solid rgba(0,212,255,.2);
  padding: 5px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.5px;
  margin-bottom: 16px;
}
.section-title span { color: var(--accent); }
.section-subtitle {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
  max-width: 560px;
}

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color .2s, transform .2s;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }

/* ── Code Blocks ── */
.code-block {
  background: #080a0f;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.code-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.code-dot { width: 10px; height: 10px; border-radius: 50%; }
.code-dot.red   { background: #ff5f57; }
.code-dot.yellow{ background: #febc2e; }
.code-dot.green { background: #28c840; }
.code-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  margin-left: 8px;
}
.code-body {
  padding: 20px 24px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.8;
  color: #c9d1d9;
  overflow-x: auto;
}
.code-body .c   { color: var(--muted); }
.code-body .cmd { color: var(--accent); }
.code-body .str { color: #a5f3a5; }
.code-body .kw  { color: var(--accent2); }
.code-body .num { color: var(--orange); }
.code-body .prompt { color: var(--muted); user-select: none; }

/* ── Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 20px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .5px;
}
.badge-accent  { background: rgba(0,212,255,.1);  color: var(--accent);  border: 1px solid rgba(0,212,255,.25); }
.badge-purple  { background: rgba(124,58,237,.1); color: #a78bfa;        border: 1px solid rgba(124,58,237,.25); }
.badge-green   { background: rgba(34,197,94,.1);  color: var(--green);   border: 1px solid rgba(34,197,94,.25); }
.badge-orange  { background: rgba(245,158,11,.1); color: var(--orange);  border: 1px solid rgba(245,158,11,.25); }

/* ── Step Indicator ── */
.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(0,212,255,.1);
  border: 1.5px solid rgba(0,212,255,.3);
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
}

/* ── Gradient Text ── */
.grad {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Glow Orb ── */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  opacity: .25;
}

/* ── Tab System ── */
.tab-bar {
  display: flex;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 4px;
  width: fit-content;
  flex-wrap: wrap;
}
.tab-btn {
  padding: 9px 18px;
  border-radius: 10px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  background: none;
  color: var(--muted);
  transition: all .2s;
  display: flex;
  align-items: center;
  gap: 7px;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active {
  background: var(--surface2);
  color: var(--text);
  box-shadow: 0 2px 8px rgba(0,0,0,.3);
}
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Prose ── */
.prose { font-family: var(--mono); font-size: 13px; color: var(--muted); line-height: 1.9; }
.prose p { margin-bottom: 16px; }
.prose h3 { font-family: var(--sans); font-size: 18px; color: var(--text); margin: 28px 0 10px; font-weight: 800; }
.prose h4 { font-family: var(--sans); font-size: 15px; color: var(--text); margin: 20px 0 8px; font-weight: 700; }
.prose ul { padding-left: 20px; margin-bottom: 16px; }
.prose ul li { margin-bottom: 6px; }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.prose strong { color: var(--text); font-weight: 700; }

/* ── Page Hero (sub-pages) ── */
.page-hero {
  padding: 64px 24px 56px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.page-hero .container { position: relative; z-index: 1; }

/* ── Divider ── */
.divider { height: 1px; background: var(--border); margin: 48px 0; }

/* ── Alert box ── */
.alert {
  padding: 14px 18px;
  border-radius: 12px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.7;
  display: flex;
  gap: 10px;
}
.alert-info    { background: rgba(0,212,255,.07);  border: 1px solid rgba(0,212,255,.2);  color: #7dd3e8; }
.alert-warn    { background: rgba(245,158,11,.07); border: 1px solid rgba(245,158,11,.2); color: #fbbf60; }
.alert-success { background: rgba(34,197,94,.07);  border: 1px solid rgba(34,197,94,.2);  color: #6ee7a0; }

/* ── Form Inputs ── */
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }
.form-group label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
}
.form-group input,
.form-group textarea,
.form-group select {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 13px 16px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text);
  outline: none;
  transition: border-color .2s;
  width: 100%;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--accent); }
.form-group textarea { min-height: 130px; resize: vertical; }

/* ── Utility ── */
.text-center { text-align: center; }
.text-muted  { color: var(--muted); font-family: var(--mono); font-size: 13px; }
.mt-8  { margin-top:  8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-8  { margin-bottom:  8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.gap-16 { gap: 16px; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }
@media (max-width: 860px) {
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .grid-4 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
}

/* ── Scroll animation ── */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-up.visible { opacity: 1; transform: none; }