*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg-deep: #08060e;
  --bg-card: rgba(14, 10, 24, 0.7);
  --border-subtle: rgba(116, 70, 141, 0.12);
  --border-hover: rgba(116, 70, 141, 0.35);
  --purple-accent: #9b6fb6;
  --purple-bright: #c9a0e8;
  --purple-dim: #74468d;
  --text-primary: #ede6f5;
  --text-secondary: #9990a8;
  --text-muted: #5c5468;
}

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

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* --- Shared section background technique --- */
.bg-section {
  position: relative;
  overflow: hidden;
}
.bg-section .bg-img {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.bg-section .bg-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, transparent 20%, var(--bg-deep) 75%),
    linear-gradient(180deg, rgba(8,6,14,0.3) 0%, rgba(8,6,14,0.6) 100%);
}

/* --- Nav --- */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(24px) saturate(1.4);
  -webkit-backdrop-filter: blur(24px) saturate(1.4);
  background: rgba(8, 6, 14, 0.65);
  border-bottom: 1px solid var(--border-subtle);
}
.nav-brand {
  display: flex;
  align-items: center;
  text-decoration: none;
}
.nav-brand svg { height: 38px; width: auto; }
.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.84rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  transition: color 0.3s;
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links .btn-nav {
  color: var(--purple-accent);
  border: 1px solid var(--border-hover);
  padding: 0.4rem 1.1rem;
  border-radius: 6px;
  transition: all 0.3s;
}
.nav-links .btn-nav:hover {
  background: rgba(116, 70, 141, 0.1);
  border-color: var(--purple-accent);
}
.nav-links .btn-download {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: #fff;
  background: linear-gradient(135deg, var(--purple-dim), #5a2d78);
  border: 1px solid rgba(155, 111, 182, 0.3);
  padding: 0.4rem 1.1rem;
  border-radius: 6px;
  font-size: 0.84rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s;
}
.nav-links .btn-download:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(116, 70, 141, 0.3);
  border-color: var(--purple-accent);
}

/* --- Language Switcher --- */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.lang-switch a,
.lang-switch .lang-active {
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.2rem 0.35rem;
  border-radius: 4px;
  font-size: 0.72rem;
  transition: color 0.3s, background 0.3s;
}
.lang-switch a:hover {
  color: var(--text-primary);
  background: rgba(116, 70, 141, 0.1);
}
.lang-switch .lang-active {
  color: var(--text-primary);
  cursor: default;
}
.lang-switch .lang-sep {
  color: var(--border-subtle);
  user-select: none;
}
.footer-lang { margin-top: 1.2rem; justify-content: center; }

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 7rem 2rem 2rem;
}
.hero .bg-img {
  background-image: url('../img/bg_hero.jpg');
  opacity: 0.35;
}
.hero .bg-img::after {
  background:
    radial-gradient(ellipse at 50% 45%, transparent 15%, var(--bg-deep) 65%),
    linear-gradient(180deg, rgba(8,6,14,0.1) 0%, var(--bg-deep) 95%);
}
.hero-logo {
  position: relative; z-index: 1;
  margin-top: -4rem;
  margin-bottom: 1.5rem;
  animation: fadeUp 0.8s ease both;
}
.hero-logo svg { height: 140px; width: auto; }
.hero-badge {
  position: relative; z-index: 1;
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--purple-accent);
  border: 1px solid var(--border-hover);
  padding: 0.4rem 1.1rem;
  border-radius: 100px;
  margin-bottom: 2.5rem;
  background: rgba(116, 70, 141, 0.08);
  backdrop-filter: blur(8px);
  animation: fadeUp 0.8s ease 0.1s both;
}
.hero h1 {
  position: relative; z-index: 1;
  font-family: 'Instrument Serif', serif;
  font-size: clamp(3.2rem, 7.5vw, 6.2rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 1.8rem;
  animation: fadeUp 0.8s ease 0.2s both;
}
.hero h1 em {
  font-style: italic;
  color: var(--purple-bright);
}
.hero-sub {
  position: relative; z-index: 1;
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 540px;
  line-height: 1.75;
  margin-bottom: 3rem;
  font-weight: 300;
  animation: fadeUp 0.8s ease 0.3s both;
}
.hero-actions {
  position: relative; z-index: 1;
  display: flex;
  gap: 1rem;
  animation: fadeUp 0.8s ease 0.4s both;
}
.btn-primary {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.8rem 2rem;
  background: linear-gradient(135deg, var(--purple-dim), #5a2d78);
  color: #fff;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 8px;
  border: 1px solid rgba(155, 111, 182, 0.3);
  transition: all 0.3s;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(116, 70, 141, 0.3);
  border-color: var(--purple-accent);
}
.btn-ghost {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.8rem 2rem;
  background: rgba(14, 10, 24, 0.5);
  backdrop-filter: blur(8px);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 400;
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
  transition: all 0.3s;
}
.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

/* --- Stats --- */
.stats {
  padding: 2rem 2rem 4rem;
  margin-top: -9rem;
  position: relative;
  z-index: 1;
}
.stats-grid {
  display: flex; justify-content: center;
  gap: 5rem; flex-wrap: wrap;
  max-width: 900px; margin: 0 auto;
}
.stat { text-align: center; }
.stat-number {
  font-family: 'Instrument Serif', serif;
  font-size: 2.8rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1;
}
.stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 500;
}

/* --- Divider --- */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-subtle), transparent);
  max-width: 500px;
  margin: 0 auto;
}

/* --- Cores section --- */
.cores {
  padding: 6rem 2rem;
}
.cores .bg-img {
  background-image: url('../img/bg_cores.jpg');
  opacity: 0.2;
}
.cores .bg-img::after {
  background:
    linear-gradient(180deg, var(--bg-deep) 0%, transparent 20%, transparent 80%, var(--bg-deep) 100%),
    radial-gradient(ellipse at center, transparent 30%, var(--bg-deep) 70%);
}
.section-label {
  position: relative; z-index: 1;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--purple-accent);
  text-align: center;
  margin-bottom: 1rem;
}
.section-title {
  position: relative; z-index: 1;
  font-family: 'Instrument Serif', serif;
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 400;
  text-align: center;
  letter-spacing: -0.02em;
  margin-bottom: 4rem;
  line-height: 1.15;
}
.cores-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  max-width: 1080px;
  margin: 0 auto;
  position: relative; z-index: 1;
}
.core-card {
  padding: 2rem;
  border-radius: 16px;
  border: 1px solid var(--border-subtle);
  background: rgba(14, 10, 24, 0.65);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}
.core-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--purple-accent), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}
.core-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), 0 0 40px rgba(116, 70, 141, 0.06);
}
.core-card:hover::before { opacity: 1; }
.core-tag {
  display: inline-block;
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--purple-accent);
  background: rgba(116, 70, 141, 0.1);
  border: 1px solid rgba(116, 70, 141, 0.18);
  padding: 0.25rem 0.7rem;
  border-radius: 4px;
  margin-bottom: 1.2rem;
}
.core-card h3 {
  font-family: 'Instrument Serif', serif;
  font-size: 1.4rem;
  font-weight: 400;
  margin-bottom: 0.8rem;
  letter-spacing: -0.01em;
  line-height: 1.25;
}
.core-card p {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.75;
  font-weight: 300;
}
.core-detail {
  margin-top: 1.2rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.01em;
  line-height: 1.6;
}

/* --- Origin --- */
.origin {
  padding: 6rem 2rem;
  text-align: center;
}
.origin .bg-img {
  background-image: url('../img/bg_origin.jpg');
  opacity: 0.15;
}
.origin .bg-img::after {
  background:
    linear-gradient(180deg, var(--bg-deep) 0%, transparent 25%, transparent 75%, var(--bg-deep) 100%),
    radial-gradient(ellipse at center, transparent 20%, var(--bg-deep) 65%);
}
.origin-quote {
  position: relative; z-index: 1;
  font-family: 'Instrument Serif', serif;
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-style: italic;
  color: var(--text-primary);
  max-width: 680px;
  margin: 0 auto 2.5rem;
  line-height: 1.5;
  letter-spacing: -0.01em;
}
.tech-badges {
  position: relative; z-index: 1;
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.tech-badge {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  border: 1px solid rgba(92, 84, 104, 0.25);
  padding: 0.35rem 0.85rem;
  border-radius: 5px;
  background: rgba(14, 10, 24, 0.6);
  backdrop-filter: blur(4px);
  transition: all 0.3s;
}
.tech-badge:hover {
  color: var(--text-secondary);
  border-color: var(--border-hover);
}

/* --- Footer --- */
footer {
  padding: 4rem 2rem 3rem;
  text-align: center;
  border-top: 1px solid var(--border-subtle);
  position: relative;
  z-index: 1;
}
.footer-logo { margin-bottom: 1.5rem; }
.footer-logo svg { height: 32px; width: auto; opacity: 0.4; }
.award-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--purple-dim);
  border: 1px solid rgba(116, 70, 141, 0.2);
  padding: 0.45rem 1.2rem;
  border-radius: 6px;
  margin-bottom: 1.5rem;
}
footer p {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 300;
}
footer a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s;
}
footer a:hover { color: var(--purple-accent); }

/* --- Content pages (Impressum, Datenschutz, 404) --- */
.page-content {
  max-width: 680px;
  margin: 0 auto;
  padding: 8rem 2rem 4rem;
  position: relative;
  z-index: 1;
}
.page-content--centered {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}
.page-content h1 {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 400;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}
.page-content h2 {
  font-family: 'Instrument Serif', serif;
  font-size: 1.3rem;
  font-weight: 400;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}
.page-content p,
.page-content li {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.75;
  font-weight: 300;
}
.page-content ul {
  list-style: none;
  padding: 0;
}
.page-content li {
  padding: 0.25rem 0;
}
.page-content a {
  color: var(--purple-accent);
  text-decoration: none;
  transition: color 0.3s;
}
.page-content a:hover {
  color: var(--purple-bright);
}

/* --- Animations --- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .cores-grid { grid-template-columns: 1fr; }
  .stats-grid { gap: 2.5rem; }
  .hero { padding: 7rem 1.5rem 4rem; }
  .hero-logo svg { height: 70px; }
  nav { padding: 1rem 1.5rem; }
  .nav-brand svg { height: 20px; }
  .nav-links { gap: 0.6rem; flex-wrap: wrap; justify-content: flex-end; }
  .nav-links a:not(.btn-nav):not(.btn-download) { display: none; }
  .lang-switch { order: 1; }
  .nav-links .btn-nav { order: 2; }
  .nav-links .btn-download { order: 3; }
}