/* ══════════════════════════════════════════════════
   FRANK-TAUBER.DE — DESIGN SYSTEM
   S1: Vanilla CSS, kein Framework
   ══════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

/* ── CUSTOM PROPERTIES ────────────────────────────── */
:root {
  --black:          #000000;
  --graphite:       #151515;
  --graphite-border:#222222;
  --orange:         #FF4D00;
  --white:          #FFFFFF;
  --grey:           #9EA3AE;
  --grey-dark:      #6B7280;

  --font-display: 'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --max-width: 1200px;
  --header-h:  72px;
}

/* ── RESET ────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: 0 !important;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.6;
  color: var(--grey);
  background-color: var(--black);
  background-image:
    linear-gradient(rgba(21,21,21,0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21,21,21,0.5) 1px, transparent 1px);
  background-size: 25px 25px;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

/* ── TYPOGRAPHY ───────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--white);
  line-height: 1.2;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; }

.mono { font-family: var(--font-mono); }

/* ── LAYOUT ───────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

/* ── HEADER ───────────────────────────────────────── */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: rgba(0, 0, 0, 0.95);
  border-bottom: 1px solid var(--graphite-border);
  z-index: 1000;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
}

.logo .cursor {
  display: inline-block;
  color: var(--orange);
  animation: blink 1s step-end infinite;
}

.cursor {
  display: inline-block;
  width: 3px;
  height: 1em;
  background: var(--orange);
  vertical-align: text-bottom;
  margin-left: 2px;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

nav { display: flex; align-items: center; gap: 8px; }

nav a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--grey);
  padding: 8px 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.2s;
}

nav a:hover { color: var(--white); }

nav a.cta-nav {
  background: var(--orange);
  color: var(--black);
  font-weight: 700;
  padding: 8px 18px;
}

nav a.cta-nav:hover {
  background: var(--white);
  color: var(--black);
}

/* ── NAV DIVIDER ──────────────────────────────────── */
.nav-divider {
  width: 1px;
  height: 24px;
  background: var(--graphite-border);
  margin: 0 8px;
}

/* ── TESTS DROPDOWN ───────────────────────────────── */
.nav-tests {
  display: flex;
  align-items: center;
}

.tests-dropdown {
  position: relative;
}

.nav-test-stack {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  margin-right: 12px;
  gap: 3px;
}

.status-ampel {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.status-ampel.lauft {
  color: #FFA500;
}

.status-ampel.beendet {
  color: #22C55E;
}

.nav-test-bericht {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--grey-dark);
  text-decoration: none;
  border: 1px solid var(--graphite-border);
  padding: 3px 8px;
  letter-spacing: 0.06em;
  transition: color 0.2s, border-color 0.2s;
  white-space: nowrap;
}

.nav-test-bericht:hover {
  color: var(--white);
  border-color: var(--grey-dark);
}

.version-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: #000000;
  background: var(--orange);
  padding: 2px 7px;
  margin-right: 8px;
  letter-spacing: 0.05em;
  display: inline-block;
}

.tests-toggle {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--grey-dark);
  background: none;
  border: 1px solid var(--graphite-border);
  padding: 6px 14px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}

.tests-toggle:hover {
  color: var(--orange);
  border-color: var(--orange);
}

.tests-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--graphite);
  border: 1px solid var(--graphite-border);
  min-width: 200px;
  z-index: 1001;
}

.tests-dropdown:hover .tests-menu,
.tests-dropdown.open .tests-menu {
  display: block;
}

.tests-menu-status {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: #FFA500;
  padding: 8px 16px 4px;
  letter-spacing: 0.08em;
}

.tests-menu-bericht {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--orange);
  padding: 4px 16px 8px;
  text-decoration: none;
  letter-spacing: 0.06em;
  transition: color 0.2s;
}

.tests-menu-bericht:hover {
  color: var(--white);
}

.tests-menu-divider {
  height: 1px;
  background: var(--graphite-border);
  margin: 4px 0;
}

.tests-menu a {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--grey);
  padding: 12px 16px;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--graphite-border);
  transition: color 0.2s, background 0.2s;
}

.tests-menu a:last-child { border-bottom: none; }

.tests-menu a:hover {
  color: var(--white);
  background: rgba(255,77,0,0.08);
}

.tests-menu a.active-test {
  color: var(--orange);
}

.tests-menu a.active-test::before {
  content: '▶ ';
}

/* ── MOBILE MENU ──────────────────────────────────── */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: all 0.3s;
}

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: var(--black);
  border-bottom: 1px solid var(--graphite-border);
  flex-direction: column;
  z-index: 999;
}

.mobile-nav a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--grey);
  padding: 18px 24px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--graphite-border);
  transition: color 0.2s;
}

.mobile-nav a:hover { color: var(--white); }
.mobile-nav a.cta-nav {
  background: var(--orange);
  color: var(--black);
  font-weight: 700;
}

.mobile-nav.open { display: flex; }

/* ── FOOTER ───────────────────────────────────────── */
footer {
  border-top: 1px solid var(--graphite-border);
  padding: 24px 0;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-left {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--grey-dark);
  letter-spacing: 0.05em;
}

.footer-right {
  display: flex;
  gap: 24px;
}

.footer-right a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--grey-dark);
  letter-spacing: 0.05em;
  transition: color 0.2s;
}

.footer-right a:hover { color: var(--orange); }

/* ── PAGE WRAPPER ─────────────────────────────────── */
.page-wrapper {
  padding-top: var(--header-h);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

/* ── HERO ─────────────────────────────────────────── */
.hero {
  padding: 100px 0 80px;
  border-bottom: 1px solid var(--graphite-border);
}

.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero-title .cursor {
  color: var(--orange);
  animation: blink 1s step-end infinite;
}

.hero-sub {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--grey);
  margin-bottom: 16px;
  max-width: 600px;
}

.hero-claim {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--grey-dark);
  margin-bottom: 40px;
}

.btn-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ── BUTTONS ──────────────────────────────────────── */
.btn-primary {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  background: var(--orange);
  color: var(--black);
  padding: 16px 32px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: background 0.2s, color 0.2s;
  display: inline-block;
}

.btn-primary:hover {
  background: var(--white);
  color: var(--black);
}

.btn-ghost {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  background: transparent;
  color: var(--orange);
  border: 1px solid var(--orange);
  padding: 16px 32px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: background 0.2s, color 0.2s;
  display: inline-block;
}

.btn-ghost:hover {
  background: var(--orange);
  color: var(--black);
}

/* ── ERROR KACHELN ────────────────────────────────── */
.pain-points {
  padding: 80px 0;
  border-bottom: 1px solid var(--graphite-border);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--orange);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 40px;
}

.error-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.error-card {
  background: var(--graphite);
  border: 1px solid var(--graphite-border);
  padding: 32px;
  transition: border-color 0.3s;
}

.error-card:hover { border-color: var(--orange); }

.error-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--orange);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.error-label .dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--orange);
  animation: blink 1s step-end infinite;
}

.error-card p {
  font-size: 0.95rem;
  color: var(--grey);
  line-height: 1.6;
}

/* ── FIX SECTION ──────────────────────────────────── */
.fix-section {
  padding: 80px 0;
  border-bottom: 1px solid var(--graphite-border);
}

.fix-box {
  background: var(--graphite);
  border: 1px solid var(--graphite-border);
  border-left: 3px solid var(--orange);
  padding: 48px;
  max-width: 760px;
}

.fix-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--orange);
  letter-spacing: 0.12em;
  margin-bottom: 24px;
}

.fix-text {
  font-size: 1.1rem;
  color: var(--grey);
  margin-bottom: 8px;
}

.fix-text strong { color: var(--white); }

/* ── MODUL TEASER ─────────────────────────────────── */
.module-teaser {
  padding: 80px 0;
}

.module-teaser-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 40px;
}

.teaser-card {
  background: var(--graphite);
  border: 1px solid var(--graphite-border);
  padding: 24px;
  transition: border-color 0.3s;
}

.teaser-card:hover { border-color: var(--orange); }

.teaser-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--orange);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.teaser-name {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--white);
  font-weight: 600;
}

/* ── MODULE PAGE ──────────────────────────────────── */
.module-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.module-card {
  background: var(--graphite);
  border: 1px solid var(--graphite-border);
  padding: 36px;
  transition: border-color 0.3s;
  display: flex;
  flex-direction: column;
}

.module-card:hover { border-color: var(--orange); }

.module-nr {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--orange);
  letter-spacing: 0.15em;
  margin-bottom: 8px;
}

.module-name {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--white);
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: 0.03em;
}

.module-features {
  flex: 1;
  margin-bottom: 24px;
}

.module-features li {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 0.9rem;
  color: var(--grey);
}

.module-features li::before {
  content: '[+]';
  font-family: var(--font-mono);
  color: var(--orange);
  flex-shrink: 0;
}

.module-price {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--orange);
  font-weight: 700;
  margin-bottom: 16px;
}

.module-target {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--grey-dark);
  letter-spacing: 0.05em;
}

.module-target::before {
  content: '>_ ';
  color: var(--orange);
}

.module-status {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--orange);
  letter-spacing: 0.08em;
  margin-top: 12px;
  padding: 8px 12px;
  border: 1px solid var(--graphite-border);
}

/* ── ARCHITEKT PAGE ───────────────────────────────── */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: 48px 0;
  width: 100%;
}

.metric-card {
  background: var(--graphite);
  border: 1px solid var(--graphite-border);
  padding: 32px 24px;
  text-align: center;
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--orange);
  display: block;
  margin-bottom: 8px;
}

.metric-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--grey-dark);
  letter-spacing: 0.12em;
}

.refs {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--grey-dark);
  letter-spacing: 0.15em;
  margin-bottom: 48px;
}

.profile-box {
  background: var(--graphite);
  border: 1px solid var(--graphite-border);
  border-left: 3px solid var(--orange);
  padding: 36px;
  margin-bottom: 24px;
  max-width: 760px;
}

.profile-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--orange);
  letter-spacing: 0.12em;
  margin-bottom: 20px;
}

.profile-line {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--grey);
  margin-bottom: 10px;
}

.profile-line::before {
  content: '>_ ';
  color: var(--orange);
}

.methodik-list { margin-top: 16px; }

.methodik-list li {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--grey);
}

.methodik-list li::before {
  content: '[+]';
  color: var(--orange);
  flex-shrink: 0;
}

/* ── KONTAKT PAGE ─────────────────────────────────── */
.terminal-box {
  background: var(--graphite);
  border: 1px solid var(--graphite-border);
  padding: 40px;
  max-width: 640px;
  margin: 48px 0;
}

.terminal-line {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--grey);
  margin-bottom: 14px;
  display: flex;
  gap: 8px;
}

.terminal-line .prompt {
  color: var(--orange);
  flex-shrink: 0;
}

.terminal-line a { color: var(--orange); transition: color 0.2s; }
.terminal-line a:hover { color: var(--white); }

/* ── LEGAL PAGES ──────────────────────────────────── */
.legal-content {
  max-width: 760px;
  margin: 48px 0;
}

.legal-block {
  background: var(--graphite);
  border: 1px solid var(--graphite-border);
  padding: 36px;
  margin-bottom: 24px;
}

.legal-block h2 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--orange);
  letter-spacing: 0.12em;
  margin-bottom: 20px;
}

.legal-block p, .legal-block li {
  font-size: 0.9rem;
  color: var(--grey);
  margin-bottom: 10px;
  line-height: 1.7;
}

.legal-block ul {
  padding-left: 20px;
}

.legal-block ul li {
  list-style: none;
  padding-left: 12px;
  position: relative;
}

.legal-block ul li::before {
  content: '—';
  position: absolute;
  left: -12px;
  color: var(--orange);
}

.legal-block a { color: var(--orange); }
.legal-block a:hover { color: var(--white); }

/* ── PAGE HERO (Unterseiten) ──────────────────────── */
.page-hero {
  padding: 80px 0 48px;
  border-bottom: 1px solid var(--graphite-border);
}

.page-hero-title {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.page-hero-sub {
  font-size: 1.1rem;
  color: var(--grey);
}

/* ── RESPONSIVE ───────────────────────────────────── */
@media (max-width: 768px) {
  nav { display: none; }
  .burger { display: flex; }

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .module-grid {
    grid-template-columns: 1fr;
  }

  .fix-box, .profile-box, .terminal-box {
    padding: 28px 20px;
  }

  .module-teaser-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .btn-group {
    flex-direction: column;
  }

  .btn-primary, .btn-ghost {
    text-align: center;
  }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
  }

  .module-teaser-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 320px) {
  .hero-title { font-size: 1.8rem; }
  .metrics-grid { grid-template-columns: 1fr; }
}

/* ── MOBILE TESTS SECTION ─────────────────────────── */
.mobile-nav-divider {
  height: 1px;
  background: var(--orange);
  opacity: 0.3;
  margin: 4px 0;
}

.mobile-nav .tests-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--grey-dark);
  padding: 10px 24px 6px;
  letter-spacing: 0.15em;
  display: block;
}

@media (max-width: 768px) {
  .nav-tests { display: none; }
  .nav-divider { display: none; }
}