/* ═══════════════════════════════════════════════════════════════
   DURAN DIGITAL SOLUTIONS — Stylesheet v3
   Tech-Blau · Cyan-Akzent · Lila-Glow
   Eigene Marken-Identität, klar getrennt von CarAngebot
   DSGVO-pur: keine externen Schriften, kein Tracking
   ═══════════════════════════════════════════════════════════════ */

:root {
  /* Hintergründe — tiefes Tech-Dunkel */
  --bg-primary: #070c1f;
  --bg-secondary: #0e1530;
  --bg-card: #131a3a;
  --bg-card-hover: #1a234a;

  /* Akzent-Farben — eigenständige DDS-Identität */
  --accent-cyan: #22d3ee;          /* Helles Cyan — Tech-Studio */
  --accent-cyan-bright: #67e8f9;
  --accent-violet: #a78bfa;        /* Sanftes Lila — Premium-Touch */
  --accent-violet-bright: #c4b5fd;
  --accent-glow: rgba(34, 211, 238, 0.18);
  --accent-violet-glow: rgba(167, 139, 250, 0.15);

  /* Text */
  --text-white: #ffffff;
  --text-light: #e2e8f0;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-medium: rgba(255, 255, 255, 0.12);
  --border-accent: rgba(34, 211, 238, 0.25);

  /* Shadows */
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(34, 211, 238, 0.15);

  /* Layout */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --max-width: 1200px;
  --gutter: clamp(20px, 5vw, 40px);

  /* Schriften — system, keine Google Fonts */
  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

/* ═══ RESET ═══ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-system);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-light);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s ease; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font-family: inherit; font-size: inherit; }

/* ═══ CONTAINER ═══ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ═══ NAVIGATION ═══ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(7, 12, 31, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: box-shadow 0.3s ease;
}
.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  flex-direction: column;
  line-height: 1;
  color: var(--text-white);
}
.logo-text {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.logo-pipe {
  background: linear-gradient(180deg, var(--accent-cyan), var(--accent-violet));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 400;
  margin: 0 1px;
}
.logo-sub {
  font-size: 9px;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 2px;
}
.nav-menu {
  display: flex;
  gap: 8px;
  align-items: center;
}
.nav-menu a {
  padding: 8px 14px;
  font-size: 14px;
  color: var(--text-light);
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}
.nav-menu a:hover {
  color: var(--accent-cyan);
  background: rgba(34, 211, 238, 0.06);
}
.nav-cta {
  background: var(--accent-cyan);
  color: var(--bg-primary) !important;
  font-weight: 600;
}
.nav-cta:hover {
  background: var(--accent-cyan-bright) !important;
  color: var(--bg-primary) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--accent-glow);
}
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 8px;
}
.nav-burger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-white);
  transition: all 0.3s ease;
  transform-origin: center;
}
.nav-burger.active span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-burger.active span:nth-child(2) {
  opacity: 0;
}
.nav-burger.active span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ═══ HERO ═══ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px var(--gutter) 80px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 25%, rgba(34, 211, 238, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 85% 70%, rgba(167, 139, 250, 0.10) 0%, transparent 45%),
    linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  z-index: -1;
}
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(34, 211, 238, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 211, 238, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}
.hero-content {
  max-width: 900px;
  text-align: center;
  position: relative;
  z-index: 1;
  animation: heroFadeIn 1s ease-out;
}
@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 48px;
  line-height: 1;
}
.hero-logo-text {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: -0.03em;
}
.hero-logo-pipe {
  background: linear-gradient(180deg, var(--accent-cyan), var(--accent-violet));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 300;
}
.hero-logo-sub {
  font-size: clamp(10px, 1.2vw, 13px);
  letter-spacing: 0.5em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 12px;
}
.hero-headline {
  font-size: clamp(34px, 6vw, 64px);
  line-height: 1.1;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: -0.03em;
  margin-bottom: 28px;
}
.hero-headline .accent {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-violet) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero-sub {
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 40px;
  line-height: 1.7;
}
.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px; height: 36px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
  opacity: 0.6;
}
.hero-scroll span {
  display: block;
  width: 3px; height: 8px;
  background: var(--accent-cyan);
  border-radius: 2px;
  animation: scrollDown 2s ease-in-out infinite;
}
@keyframes scrollDown {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}

/* ═══ BUTTONS ═══ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all 0.25s ease;
  white-space: nowrap;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
  color: var(--bg-primary);
  box-shadow: 0 6px 20px rgba(34, 211, 238, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(34, 211, 238, 0.5), 0 0 60px var(--accent-violet-glow);
  filter: brightness(1.1);
}
.btn-ghost {
  background: transparent;
  color: var(--text-light);
  border: 1px solid var(--border-medium);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* ═══ SECTION ═══ */
.section {
  padding: clamp(80px, 12vw, 140px) 0;
  position: relative;
}
.section-alt {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}
.section-head {
  max-width: 760px;
  margin: 0 auto 64px;
  text-align: center;
}
.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  padding: 6px 14px;
  border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: 100px;
  background: rgba(34, 211, 238, 0.06);
  margin-bottom: 20px;
}
.section-title {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.2;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}
.section-sub {
  font-size: clamp(15px, 1.4vw, 17px);
  color: var(--text-muted);
  line-height: 1.7;
}

/* ═══ CARDS GRID (Leistungen) ═══ */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--accent-violet), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.card:hover::before { opacity: 1; }
.card-icon {
  width: 56px; height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.12), rgba(167, 139, 250, 0.08));
  color: var(--accent-cyan);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}
.card-icon svg { width: 28px; height: 28px; }
.card h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
}
.card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ═══ CARD-WIDE — Breite Karte über volle Grid-Breite ═══ */
.card-wide {
  grid-column: 1 / -1;
  padding: 40px 44px;
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 32px;
  align-items: start;
}
.card-wide .card-icon {
  width: 72px;
  height: 72px;
  margin-bottom: 0;
}
.card-wide .card-icon svg {
  width: 36px;
  height: 36px;
}
.card-wide .card-wide-content {
  display: flex;
  flex-direction: column;
}
.card-wide h3 {
  font-size: 22px;
  margin-bottom: 14px;
}
.card-wide-intro {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
  max-width: 720px;
}
.card-wide-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
}
.card-wide-feature {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.5;
}
.card-wide-feature::before {
  content: '✓';
  color: var(--accent-cyan);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
  flex-shrink: 0;
}

/* ═══ TECH-STACK ═══ */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 720px;
  margin: 0 auto;
}
.tech-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 28px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all 0.25s ease;
}
.tech-item:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-cyan);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(34, 211, 238, 0.12);
}
.tech-mark {
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  font-family: var(--font-mono);
}
.tech-item span {
  font-size: 13px;
  color: var(--text-light);
  font-weight: 500;
}

/* ═══ PROZESS ═══ */
.process {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 24px;
  align-items: center;
}
.process-step {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  transition: all 0.3s ease;
}
.process-step:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(34, 211, 238, 0.08);
}
.process-num {
  font-size: 14px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  font-family: var(--font-mono);
}
.process-step h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
}
.process-step p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
}
.process-arrow {
  font-size: 32px;
  color: var(--accent-cyan);
  font-weight: 300;
}

/* ═══ REFERENZ ═══ */
.referenz-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.referenz-visual {
  position: relative;
  height: 460px;
}
.mockup-desktop {
  position: absolute;
  top: 0; left: 0;
  width: 88%;
  background: linear-gradient(135deg, #1e2a55, #0e1530);
  border-radius: var(--radius-lg);
  padding: 14px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-medium);
}
.mockup-screen {
  background: var(--bg-primary);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.mockup-header {
  display: flex;
  gap: 6px;
  padding: 12px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
}
.mockup-header span {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--text-dim);
}
.mockup-header span:first-child { background: #ff5f57; }
.mockup-header span:nth-child(2) { background: #febc2e; }
.mockup-header span:nth-child(3) { background: #28c840; }
.mockup-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.mockup-line {
  height: 12px;
  background: linear-gradient(90deg, var(--bg-card), var(--bg-card-hover));
  border-radius: 4px;
}
.mockup-line.lg { width: 70%; height: 18px; background: linear-gradient(90deg, var(--accent-cyan), transparent 80%); opacity: 0.5; }
.mockup-line.md { width: 50%; }
.mockup-line.sm { width: 40%; }
.mockup-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 8px 0;
}
.mockup-tile {
  height: 60px;
  background: var(--bg-card);
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
}
.mockup-phone {
  position: absolute;
  bottom: 0; right: 0;
  width: 160px;
  height: 320px;
  background: linear-gradient(135deg, #1a2444, #070c1f);
  border-radius: 26px;
  padding: 12px;
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--border-medium);
}
.mockup-phone-screen {
  background: var(--bg-primary);
  border-radius: 18px;
  height: 100%;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mockup-phone-header {
  height: 32px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-violet));
  opacity: 0.4;
  border-radius: 6px;
}
.mockup-phone-line {
  height: 8px;
  background: var(--bg-card-hover);
  border-radius: 3px;
  width: 80%;
}
.mockup-phone-line.short { width: 60%; }
.mockup-phone-card {
  height: 60px;
  background: var(--bg-card);
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
  margin: 4px 0;
}
.mockup-phone-btn {
  margin-top: auto;
  height: 34px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
  border-radius: 8px;
  opacity: 0.9;
}
.referenz-content h3 {
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 16px;
}
.referenz-intro {
  font-size: 17px;
  color: var(--text-light);
  margin-bottom: 28px;
  line-height: 1.6;
}
.referenz-features {
  margin-bottom: 32px;
}
.referenz-features li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}
.referenz-features li:last-child { border-bottom: none; }
.referenz-features strong {
  color: var(--text-white);
  font-weight: 600;
}

/* ═══ VALUES (Über uns) ═══ */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}
.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all 0.3s ease;
  text-align: center;
}
.value-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.value-icon {
  font-size: 36px;
  margin-bottom: 16px;
}
.value-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
}
.value-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ═══ KONTAKT — Mit echtem Formular ═══ */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 40px;
  max-width: 1080px;
  margin: 0 auto;
}
.contact-info {
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-card-hover) 100%);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  position: relative;
  overflow: hidden;
}
.contact-info::before {
  content: '';
  position: absolute;
  top: -50%; right: -30%;
  width: 80%; height: 100%;
  background: radial-gradient(circle, var(--accent-violet-glow), transparent 70%);
  pointer-events: none;
}
.contact-info h3 {
  font-size: 22px;
  color: var(--text-white);
  margin-bottom: 14px;
  font-weight: 700;
  position: relative;
}
.contact-info > p {
  color: var(--text-muted);
  margin-bottom: 28px;
  position: relative;
  font-size: 15px;
  line-height: 1.7;
}
.contact-mail {
  display: inline-block;
  font-size: clamp(16px, 1.8vw, 19px);
  color: var(--accent-cyan);
  font-weight: 600;
  word-break: break-all;
  margin-bottom: 28px;
  font-family: var(--font-mono);
  position: relative;
  transition: all 0.2s ease;
}
.contact-mail:hover {
  color: var(--accent-cyan-bright);
  transform: translateX(4px);
}
.contact-bullets {
  position: relative;
  margin-bottom: 28px;
}
.contact-bullets li {
  position: relative;
  padding: 10px 0 10px 24px;
  color: var(--text-muted);
  font-size: 14px;
  border-bottom: 1px solid var(--border-subtle);
}
.contact-bullets li:last-child { border-bottom: none; }
.contact-bullets li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent-cyan);
  font-weight: 700;
}
.contact-meta {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
  position: relative;
}
.contact-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 6px;
}
.contact-value {
  font-size: 14px;
  color: var(--text-light);
  font-weight: 500;
}

/* Form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
}
.contact-form h3 {
  font-size: 20px;
  color: var(--text-white);
  margin-bottom: 24px;
  font-weight: 700;
}
.form-group {
  margin-bottom: 18px;
}
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}
.form-group label .required {
  color: var(--accent-cyan);
  margin-left: 2px;
}
.form-input, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  color: var(--text-white);
  font-size: 15px;
  transition: all 0.2s ease;
}
.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.12);
  background: var(--bg-secondary);
}
.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
  font-family: var(--font-system);
}
.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 20px 0;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}
.form-checkbox input[type="checkbox"] {
  width: 18px; height: 18px;
  margin-top: 1px;
  accent-color: var(--accent-cyan);
  cursor: pointer;
  flex-shrink: 0;
}
.form-checkbox a {
  color: var(--accent-cyan);
  text-decoration: underline;
}
.form-checkbox a:hover {
  color: var(--accent-cyan-bright);
}
.form-submit {
  width: 100%;
  padding: 16px;
  font-size: 15px;
  font-weight: 600;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-violet));
  color: var(--bg-primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow: 0 6px 20px rgba(34, 211, 238, 0.3);
}
.form-submit:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(34, 211, 238, 0.45);
  filter: brightness(1.1);
}
.form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
.form-status {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  display: none;
}
.form-status.success {
  display: block;
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid var(--accent-cyan);
  color: var(--accent-cyan-bright);
}
.form-status.error {
  display: block;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid #ef4444;
  color: #fca5a5;
}

/* ═══ FOOTER ═══ */
.footer {
  background: #050818;
  padding: 80px 0 24px;
  border-top: 1px solid var(--border-subtle);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
}
.footer-logo-text {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: -0.02em;
}
.footer-logo-sub {
  font-size: 10px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 4px;
}
.footer-slogan {
  margin-top: 16px;
  color: var(--text-muted);
  font-size: 14px;
  max-width: 280px;
  line-height: 1.6;
}
.footer-col h4 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 18px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col a {
  color: var(--text-muted);
  font-size: 14px;
  transition: color 0.2s ease;
}
.footer-col a:hover {
  color: var(--accent-cyan);
}
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 12px;
}
.footer-made {
  font-size: 13px;
}

/* ═══ REVEAL ANIMATION ═══ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══ RESPONSIVE — TABLET (768px - 980px) ═══ */
@media (max-width: 980px) {
  /* Navigation - Burger-Menü */
  .nav-menu {
    position: fixed;
    top: 64px; left: 0; right: 0;
    flex-direction: column;
    background: rgba(7, 12, 31, 0.97);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 4px;
    transform: translateY(-150%);
    transition: transform 0.3s ease;
    border-bottom: 1px solid var(--border-subtle);
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-menu li { width: 100%; }
  .nav-menu a { display: block; padding: 14px; font-size: 15px; }
  .nav-burger { display: flex; }

  /* Hero auf Tablet anpassen */
  .hero { padding: 100px var(--gutter) 60px; min-height: 90vh; }
  .hero-headline { font-size: clamp(30px, 5.5vw, 50px); }

  /* Card-wide: Features in 2 Spalten */
  .card-wide-features {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Prozess: untereinander statt nebeneinander */
  .process { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; }
  .process-arrow { transform: rotate(90deg); justify-self: center; margin: 8px 0; }

  /* Referenz: 1 Spalte */
  .referenz-wrap { grid-template-columns: 1fr; gap: 40px; }
  .referenz-visual { height: 380px; max-width: 500px; margin: 0 auto; }

  /* Kontakt: 1 Spalte — Formular zuerst (Conversion-optimiert) */
  .contact-wrap { grid-template-columns: 1fr; gap: 28px; }
  .contact-form { order: 1; }
  .contact-info { order: 2; }

  /* Footer: 2 Spalten */
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
}

/* ═══ RESPONSIVE — MOBILE (bis 580px) ═══ */
@media (max-width: 580px) {
  :root { --gutter: 18px; }

  /* Hero — kompakt + lesbar */
  .hero {
    padding: 100px 18px 60px;
    min-height: auto;
  }
  .hero-logo { margin-bottom: 28px; }
  .hero-logo-text { font-size: 30px; }
  .hero-logo-sub { font-size: 9px; letter-spacing: 0.4em; }
  .hero-headline {
    font-size: 32px;
    line-height: 1.15;
    margin-bottom: 20px;
  }
  .hero-sub {
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 32px;
  }
  .hero-cta {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }
  .hero-cta .btn {
    width: 100%;
    padding: 16px 24px;
    font-size: 15px;
  }
  .hero-scroll { display: none; }

  /* Sektionen — weniger Padding */
  .section { padding: 64px 0; }
  .section-head { margin-bottom: 36px; }
  .section-tag {
    font-size: 11px;
    padding: 5px 12px;
    letter-spacing: 0.25em;
  }
  .section-title { font-size: 26px; line-height: 1.25; }
  .section-sub { font-size: 15px; }

  /* Karten 1 Spalte */
  .cards-grid { grid-template-columns: 1fr; gap: 16px; }
  .card { padding: 26px 22px; }
  .card-icon { width: 48px; height: 48px; margin-bottom: 16px; }
  .card-icon svg { width: 24px; height: 24px; }
  .card h3 { font-size: 17px; }
  .card p { font-size: 14px; }

  /* Card-wide: wie normale Karten auf Mobile */
  .card-wide {
    grid-template-columns: 1fr;
    padding: 26px 22px;
    gap: 0;
  }
  .card-wide .card-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
  }
  .card-wide .card-icon svg {
    width: 24px;
    height: 24px;
  }
  .card-wide h3 {
    font-size: 18px;
    margin-bottom: 12px;
  }
  .card-wide-intro {
    font-size: 14px;
    margin-bottom: 18px;
  }
  .card-wide-features {
    grid-template-columns: 1fr;
    gap: 12px;
    padding-top: 16px;
  }
  .card-wide-feature {
    font-size: 13px;
  }

  /* Tech-Grid: 2 Spalten auf Handy */
  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    max-width: 100%;
  }
  .tech-item { padding: 22px 12px; gap: 10px; }
  .tech-mark { font-size: 28px; }
  .tech-item span { font-size: 12px; }

  /* Prozess */
  .process-step { padding: 28px 22px; }
  .process-step h3 { font-size: 19px; }
  .process-step p { font-size: 14px; }
  .process-arrow { font-size: 28px; }

  /* Referenz — Mockup-Größe anpassen */
  .referenz-visual { height: 280px; }
  .mockup-desktop { width: 94%; padding: 10px; }
  .mockup-body { padding: 16px; gap: 10px; }
  .mockup-line { height: 9px; }
  .mockup-line.lg { height: 14px; }
  .mockup-tile { height: 40px; }
  .mockup-phone { width: 110px; height: 220px; padding: 8px; }
  .mockup-phone-screen { padding: 10px; gap: 6px; }
  .mockup-phone-header { height: 24px; }
  .mockup-phone-card { height: 40px; }
  .mockup-phone-btn { height: 26px; }
  .referenz-content h3 { font-size: 20px; }
  .referenz-intro { font-size: 15px; margin-bottom: 20px; }
  .referenz-features li { font-size: 14px; padding: 10px 0; }

  /* Über-uns Werte: 1 Spalte */
  .values-grid { grid-template-columns: 1fr; gap: 14px; }
  .value-card { padding: 26px 22px; }
  .value-icon { font-size: 32px; margin-bottom: 12px; }
  .value-card h3 { font-size: 17px; }
  .value-card p { font-size: 14px; }

  /* Kontakt */
  .contact-info, .contact-form { padding: 28px 22px; }
  .contact-info h3, .contact-form h3 { font-size: 19px; }
  .contact-mail { font-size: 16px; }
  .contact-bullets li { font-size: 13px; padding: 9px 0 9px 22px; }
  .contact-meta { gap: 20px; padding-top: 18px; }
  .form-input, .form-textarea {
    padding: 13px 14px;
    font-size: 16px; /* 16px verhindert Zoom bei iOS */
  }
  .form-textarea { min-height: 110px; }
  .form-submit { padding: 16px; font-size: 15px; }
  .form-checkbox { font-size: 13px; gap: 10px; }

  /* Footer */
  .footer { padding: 60px 0 20px; }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    margin-bottom: 32px;
  }
  .footer-brand { grid-column: auto; }
  .footer-slogan { max-width: 100%; font-size: 13px; }
  .footer-col h4 { margin-bottom: 14px; font-size: 11px; }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 10px;
    font-size: 12px;
  }
}

/* ═══ SEHR KLEINE HANDYS (bis 380px) ═══ */
@media (max-width: 380px) {
  .hero-headline { font-size: 28px; }
  .hero-logo-text { font-size: 26px; }
  .section-title { font-size: 23px; }
  .tech-grid { gap: 10px; }
  .tech-item { padding: 18px 10px; }
  .tech-mark { font-size: 24px; }
}

/* ═══ ACCESSIBILITY ═══ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ═══ SELECTION ═══ */
::selection {
  background: var(--accent-cyan);
  color: var(--bg-primary);
}