/* ============================================
   NEXUS — Main Stylesheet
   Dark Mode · Glassmorphism · Tech-Aesthetic
   ============================================ */

/* Self-hosted fonts (no external requests to Google — no cookie/consent banner needed) */
@font-face {
  font-family: 'Space Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/space-mono/space-mono-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Space Mono';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/space-mono/space-mono-latin-400-italic.woff2') format('woff2');
}
@font-face {
  font-family: 'Space Mono';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/space-mono/space-mono-latin-700-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Syne';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/syne/syne-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Syne';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/syne/syne-latin-600-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Syne';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/syne/syne-latin-700-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Syne';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url('../fonts/syne/syne-latin-800-normal.woff2') format('woff2');
}

:root {
  --bg-void:       #050508;
  --bg-deep:       #0a0a12;
  --bg-surface:    #0f0f1a;
  --bg-elevated:   #151525;

  --glass-bg:      rgba(255,255,255,0.04);
  --glass-border:  rgba(255,255,255,0.08);
  --glass-hover:   rgba(255,255,255,0.07);

  --accent-cyan:   #00f5c4;
  --accent-purple: #7c3aed;
  --accent-amber:  #f59e0b;
  --accent-blue:   #3b82f6;
  --accent-pink:   #ec4899;

  --text-primary:  #f0f0ff;
  --text-secondary:#9898b8;
  --text-muted:    #5a5a7a;

  --font-display:  'Syne', sans-serif;
  --font-mono:     'Space Mono', monospace;

  --radius-sm:     6px;
  --radius-md:     12px;
  --radius-lg:     20px;
  --radius-xl:     32px;

  --nav-height:    72px;
  --transition:    0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--bg-void);
  color: var(--text-primary);
  font-family: var(--font-display);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--accent-purple); border-radius: 3px; }

/* ── Noise overlay ── */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 999;
  opacity: 0.4;
}

/* ── Ambient glow orbs ── */
.ambient-orbs {
  position: fixed; inset: 0;
  pointer-events: none; z-index: 0;
  overflow: hidden;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.12;
  animation: orb-drift 20s ease-in-out infinite alternate;
}
.orb-1 { width: 600px; height: 600px; background: var(--accent-purple); top: -200px; left: -200px; animation-duration: 25s; }
.orb-2 { width: 500px; height: 500px; background: var(--accent-cyan); bottom: -150px; right: -150px; animation-duration: 30s; animation-delay: -10s; }
.orb-3 { width: 400px; height: 400px; background: var(--accent-blue); top: 40%; left: 50%; transform: translate(-50%,-50%); animation-duration: 20s; animation-delay: -5s; }

@keyframes orb-drift {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(40px, 30px) scale(1.1); }
}

/* ── Navigation ── */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2.5rem;
  background: rgba(5,5,8,0.7);
  backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid var(--glass-border);
  transition: background var(--transition);
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-decoration: none;
  color: var(--text-primary);
  display: flex; align-items: center; gap: 0.5rem;
}
.nav-logo span {
  color: var(--accent-cyan);
  text-shadow: 0 0 20px var(--accent-cyan);
}
.nav-links {
  display: flex; align-items: center; gap: 0.25rem;
  list-style: none;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text-secondary);
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  position: relative;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text-primary);
  background: var(--glass-bg);
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 50%; transform: translateX(-50%);
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
}
.nav-cta {
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue)) !important;
  color: white !important;
  font-weight: 700;
}
.nav-cta:hover { opacity: 0.85; transform: translateY(-1px); }

.hamburger {
  display: none;
  flex-direction: column; gap: 5px;
  cursor: pointer; padding: 4px;
}
.hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--text-primary);
  transition: all var(--transition);
}

/* ── Glass Card ── */
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
}
.glass:hover { border-color: rgba(255,255,255,0.14); }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
}
.btn-primary {
  background: var(--accent-cyan);
  color: var(--bg-void);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,245,196,0.3); }
.btn-outline {
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
}
.btn-outline:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
}
.btn-ghost:hover { color: var(--text-primary); background: var(--glass-bg); }

/* ── Section layout ── */
.section {
  padding: 6rem 2rem;
  position: relative;
  z-index: 1;
}
.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}
.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 1rem;
  display: block;
}
.section-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.25rem;
}
.section-intro {
  max-width: 680px;
  margin: 0 auto;
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
}

/* ── Badge / Tag ── */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  font-weight: 700;
  text-transform: uppercase;
}

/* ── Grid helpers ── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.5rem; }

/* ── Divider ── */
.divider {
  width: 60px; height: 3px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  border-radius: 2px;
  margin: 1.5rem auto;
}

/* ── Footer ── */
footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--glass-border);
  padding: 4rem 2rem 2rem;
  position: relative; z-index: 1;
}
.footer-inner {
  max-width: 1200px; margin: 0 auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand .logo {
  font-size: 1.4rem; font-weight: 800;
  letter-spacing: 0.15em;
  margin-bottom: 1rem; display: block;
  color: var(--text-primary);
  text-decoration: none;
}
.footer-brand p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; }
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.72rem; letter-spacing: 0.15em;
  text-transform: uppercase; color: var(--accent-cyan);
  margin-bottom: 1.25rem;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 0.6rem; }
.footer-col ul a {
  color: var(--text-secondary); text-decoration: none;
  font-size: 0.9rem; transition: color var(--transition);
}
.footer-col ul a:hover { color: var(--footer-link-hover); }
.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--glass-border);
  display: flex; align-items: center; justify-content: space-between;
  color: var(--text-muted); font-size: 0.8rem;
  font-family: var(--font-mono);
}

/* ── Page header (subpages) ── */
.page-hero {
  padding: calc(var(--nav-height) + 4rem) 2rem 4rem;
  text-align: center;
  position: relative; z-index: 1;
}
.page-hero h1 {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 800; line-height: 1.05;
  margin-bottom: 1.5rem;
}
.page-hero p {
  max-width: 640px; margin: 0 auto;
  color: var(--text-secondary); font-size: 1.1rem; line-height: 1.8;
}
.gradient-text {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-purple) 60%, var(--accent-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Animations ── */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes scan-line {
  0%   { transform: translateY(-100%); }
  100% { transform: translateY(100vh); }
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 10px rgba(0,245,196,0.2); }
  50%       { box-shadow: 0 0 30px rgba(0,245,196,0.5); }
}
@keyframes border-rotate {
  0%   { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}

.animate-fade-up  { animation: fade-up 0.6s ease both; }
.animate-fade-in  { animation: fade-in 0.6s ease both; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }
.delay-6 { animation-delay: 0.6s; }

/* ── Scroll reveal ── */
.reveal {
  opacity: 0; transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1; transform: translateY(0);
}

/* ── Utility ── */
.text-center { text-align: center; }
.text-accent { color: var(--accent-cyan); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }

/* ── Responsive ── */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.75rem; text-align: center; }
}

/* ── Mobile nav overlay ── */
.mobile-nav {
  display: none;
  position: fixed; inset: 0;
  background: rgba(5,5,8,0.97);
  backdrop-filter: blur(20px);
  z-index: 99;
  flex-direction: column; align-items: center; justify-content: center;
  gap: 1.5rem;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-family: var(--font-display);
  font-size: 1.8rem; font-weight: 800;
  text-decoration: none; color: var(--text-primary);
  letter-spacing: 0.05em;
  transition: color var(--transition);
}
.mobile-nav a:hover { color: var(--accent-cyan); }
.mobile-nav-close {
  position: absolute; top: 1.5rem; right: 2rem;
  background: none; border: none; cursor: pointer;
  color: var(--text-primary); font-size: 2rem; line-height: 1;
}

/* Rich-Text-Inhalte aus dem Seiten-Baukasten (WYSIWYG): der globale
   `* { margin:0; padding:0; }`-Reset entfernt sonst die Standard-Einrückung
   von Listen, wodurch Aufzählungspunkte außerhalb des Textbereichs stehen. */
.rich-html ul, .rich-html ol {
  padding-left: 1.4rem;
  margin: 0.75rem 0;
}
.rich-html li {
  margin-bottom: 0.4rem;
}
.rich-html ul { list-style-position: outside; }