/* ==========================================================================
   STC Bildungswerk — Design System (Erkrath)
   Designsprache: Apple × Tesla. Mobile-first. Kein Framework.
   ========================================================================== */

:root {
  /* Farbsystem */
  --navy-900: #0A1A33;
  --navy-700: #14284A;
  --navy-600: #1C3A66;
  --ice-50:   #F4F8FC;
  --ice-100:  #E7EFF8;
  --ice-200:  #D6E3F1;
  --blue-500: #3E7BC4;
  --accent-500: #2FA8E8;
  --accent-600: #1E8FCB;
  --white: #FFFFFF;
  --text-900: #0B1524;
  --text-600: #4B5768;
  --text-400: #6E7A8A;
  --border: #DCE6F1;
  --border-strong: #7C93AC;
  --success: #1E8E5A;
  --danger: #C0392B;
  --whatsapp: #25D366;

  --gradient-navy: linear-gradient(160deg, #0A1A33 0%, #14284A 60%, #1C3A66 100%);
  --gradient-ice: linear-gradient(180deg, #F4F8FC 0%, #FFFFFF 100%);

  /* Typografie */
  --font-display: 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-label: 'Space Grotesk', ui-monospace, monospace;

  /* Abstände (8pt Raster) */
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.5rem; --space-6: 2rem; --space-7: 3rem; --space-8: 4rem;
  --space-9: 6rem; --space-10: 8rem;

  --radius-sm: 12px; --radius-md: 18px; --radius-lg: 28px; --radius-full: 999px;

  --shadow-xs: 0 1px 2px rgba(10,26,51,0.06);
  --shadow-sm: 0 4px 12px rgba(10,26,51,0.08);
  --shadow-md: 0 12px 32px rgba(10,26,51,0.12);
  --shadow-lg: 0 24px 56px rgba(10,26,51,0.16);
  --shadow-focus: 0 0 0 3px rgba(47,168,232,0.5);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 160ms; --dur-base: 320ms; --dur-slow: 640ms;

  --container-max: 1220px;
  --header-h: 100px;
  --mobile-bar-h: 64px;
}

/* ------------------------------ Reset ---------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}
body {
  font-family: var(--font-body);
  color: var(--text-900);
  background: var(--white);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  padding-bottom: var(--mobile-bar-h);
}
@media (min-width: 960px) { body { padding-bottom: 0; } }

img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.12; letter-spacing: -0.02em; font-weight: 800; }
h3 { font-weight: 700; }

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible,
select:focus-visible, [tabindex]:focus-visible {
  outline: none; box-shadow: var(--shadow-focus); border-radius: var(--radius-sm);
}

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--navy-900); color: #fff;
  padding: var(--space-3) var(--space-5); z-index: 1000;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* ------------------------------ Layout ---------------------------------- */
.container { width: 100%; max-width: var(--container-max); margin-inline: auto; padding-inline: var(--space-5); }
@media (min-width: 768px) { .container { padding-inline: var(--space-7); } }

.section { padding-block: var(--space-9); }
.section--tight { padding-block: var(--space-8); }
.section--soft { background: var(--ice-50); }
.section--navy { background: var(--gradient-navy); color: rgba(255,255,255,0.88); position: relative; isolation: isolate; }
.section--navy::before,
.section--navy::after {
  content: ''; position: absolute; left: 0; right: 0; height: 140px; pointer-events: none; z-index: 1;
}
.section--navy::before { top: 0; background: linear-gradient(180deg, rgba(255,255,255,0.09), rgba(255,255,255,0)); }
.section--navy::after { bottom: 0; background: linear-gradient(0deg, rgba(0,0,0,0.16), rgba(0,0,0,0)); }
.section--navy { box-shadow: 0 -60px 80px -60px rgba(47,168,232,0.14) inset, 0 60px 80px -60px rgba(0,0,0,0.2) inset; }
.section--navy > .container { position: relative; z-index: 2; }
.bg-orb {
  position: absolute; border-radius: 50%; filter: blur(60px); pointer-events: none; z-index: 0;
  animation: orbDrift 24s var(--ease-in-out) infinite alternate;
}
@media (prefers-reduced-motion: reduce) { .bg-orb { animation: none; } }
.section--navy h2, .section--navy h3 { color: #fff; }
.section--navy p { color: rgba(255,255,255,0.72); }

.eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-label); font-size: 0.75rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--accent-600);
  background: rgba(47,168,232,0.1); padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full); margin-bottom: var(--space-5);
}
.eyebrow::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--accent-500); }
.section--navy .eyebrow { color: var(--accent-500); background: rgba(47,168,232,0.16); }

.section-head { max-width: 640px; margin-bottom: var(--space-8); }
.section-head.center { margin-inline: auto; text-align: center; }

h1 { font-size: clamp(2.25rem, 5vw + 1rem, 4.5rem); }
h2 { font-size: clamp(1.75rem, 3vw + 1rem, 2.75rem); }
h3 { font-size: clamp(1.2rem, 1.5vw + 1rem, 1.4rem); }
p { color: var(--text-600); }
.lede { font-size: clamp(1.05rem, 1vw + 1rem, 1.25rem); color: var(--text-600); max-width: 60ch; }
.section--navy .lede { color: rgba(255,255,255,0.72); }

/* ------------------------------ Buttons ---------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  font-family: var(--font-body); font-weight: 600; font-size: 0.95rem;
  padding: 0.9rem 1.6rem; border-radius: var(--radius-full);
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
  white-space: nowrap;
}
.btn-primary { background: var(--accent-500); color: var(--navy-900); box-shadow: var(--shadow-md); }
.btn-primary:hover { background: var(--accent-600); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-navy { background: var(--navy-900); color: #fff; box-shadow: var(--shadow-md); }
.btn-navy:hover { background: var(--navy-700); transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-ghost { background: transparent; color: var(--navy-900); border: 1.5px solid var(--border-strong); }
.btn-ghost:hover { border-color: var(--navy-900); background: var(--ice-100); transform: translateY(-2px); }
.section--navy .btn-ghost { color: #fff; border-color: rgba(255,255,255,0.4); }
.section--navy .btn-ghost:hover { background: rgba(255,255,255,0.1); border-color: #fff; }
.btn-whatsapp { background: var(--navy-900); color: #fff; box-shadow: var(--shadow-md); }
.btn-whatsapp:hover { background: var(--whatsapp); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-lg { padding: 1.1rem 2.15rem; font-size: 1rem; }
.btn-block { width: 100%; }
.btn svg { width: 18px; height: 18px; transition: transform var(--dur-base) var(--ease-out); }
.btn:hover svg.arrow { transform: translateX(3px); }
.btn:active { transform: scale(0.96) !important; transition-duration: 90ms; }
.btn:hover svg:not(.arrow) { transform: scale(1.08); }

/* ------------------------------ Header ---------------------------------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 500; height: var(--header-h);
  display: flex; align-items: center;
  background: rgba(244,248,252,0.72);
  backdrop-filter: blur(18px) saturate(160%); -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out), background var(--dur-base);
}
.site-header.is-scrolled { border-bottom-color: var(--border); box-shadow: var(--shadow-xs); background: rgba(255,255,255,0.85); }
.nav-inner { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); }
.brand { display: flex; align-items: center; font-family: var(--font-display); font-weight: 800; font-size: 1.05rem; color: var(--navy-900); transition: opacity var(--dur-fast) var(--ease-out); }
.brand:hover { opacity: 0.82; }
.brand-mark { width: 38px; height: 38px; flex-shrink: 0; }
.brand-logo { height: 50px; width: auto; }
.footer-brand .brand-logo { height: 60px; margin-bottom: var(--space-3); }
@media (min-width: 960px) { .brand-logo { height: 68px; } }
@media (min-width: 640px) and (max-width: 959px) { .brand-logo { height: 58px; } }
.nav-links { display: none; align-items: center; gap: var(--space-6); }
.nav-links a {
  font-size: 0.9rem; font-weight: 600; color: var(--text-600); position: relative; padding: var(--space-2) 0;
  transition: color var(--dur-fast) var(--ease-out);
}
.nav-links a::after { content: ''; position: absolute; left: 0; bottom: -2px; width: 0; height: 2px; background: var(--accent-500); transition: width var(--dur-base) var(--ease-out); }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--navy-900); }
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after { width: 100%; }

/* Dropdown "Leistungen" — Maus (Hover), Tastatur & Touch (Klick) */
.nav-dropdown { position: relative; padding-bottom: 18px; margin-bottom: -18px; }
.nav-dropdown-trigger {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-body); font-size: 0.9rem; font-weight: 600; color: var(--text-600);
  padding: var(--space-2) 0; position: relative; transition: color var(--dur-fast) var(--ease-out);
}
.nav-dropdown-trigger::after { content: ''; position: absolute; left: 0; bottom: -2px; width: 0; height: 2px; background: var(--accent-500); transition: width var(--dur-base) var(--ease-out); }
.nav-dropdown-trigger .chevron { width: 13px; height: 13px; transition: transform var(--dur-base) var(--ease-out); }
.nav-dropdown-trigger:hover,
.nav-dropdown-trigger[aria-expanded="true"],
.nav-dropdown-trigger.is-active-section { color: var(--navy-900); }
.nav-dropdown-trigger.is-active-section::after { width: 100%; }
.nav-dropdown:hover .nav-dropdown-trigger::after,
.nav-dropdown-trigger[aria-expanded="true"]::after { width: 100%; }
.nav-dropdown:hover .nav-dropdown-trigger .chevron,
.nav-dropdown-trigger[aria-expanded="true"] .chevron { transform: rotate(180deg); }

.nav-dropdown-panel {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(4px);
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); box-shadow: var(--shadow-lg);
  padding: var(--space-2); min-width: 232px; display: flex; flex-direction: column; gap: 1px;
  opacity: 0; visibility: hidden; pointer-events: none; z-index: 600;
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out), visibility var(--dur-base);
}
.nav-dropdown-panel--grouped { min-width: 250px; }
.nav-dropdown:hover .nav-dropdown-panel,
.nav-dropdown.is-open .nav-dropdown-panel,
.nav-dropdown-panel:focus-within {
  opacity: 1; visibility: visible; pointer-events: auto; transform: translateX(-50%) translateY(0);
}
.nav-dropdown-panel a {
  padding: 0.6rem var(--space-4); border-radius: var(--radius-sm);
  font-size: 0.92rem; font-weight: 600; color: var(--text-900);
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.nav-dropdown-panel a::after { display: none; }
.nav-dropdown-panel a:hover, .nav-dropdown-panel a:focus-visible { background: var(--ice-100); color: var(--accent-600); }
.nav-dropdown-panel a[aria-current="page"] { color: var(--accent-600); background: var(--ice-100); }
.nav-dropdown-label {
  font-family: var(--font-label); font-size: 0.68rem; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text-400); padding: var(--space-3) var(--space-4) var(--space-1);
}
.nav-dropdown-label:first-child { padding-top: var(--space-2); }
@media (prefers-reduced-motion: reduce) {
  .nav-dropdown-trigger .chevron, .nav-dropdown-panel { transition: none; }
}

.nav-contact { display: none; align-items: center; gap: var(--space-4); }
.nav-contact-item { display: flex; align-items: center; gap: var(--space-2); font-size: 0.875rem; font-weight: 600; color: var(--navy-900); }
.nav-contact-item svg { width: 18px; height: 18px; color: var(--accent-600); flex-shrink: 0; }
.nav-contact-item.whatsapp:hover svg { color: var(--whatsapp); }
.nav-contact-item.whatsapp:hover { color: var(--whatsapp); }
.nav-contact-item--static { color: var(--text-600); cursor: default; }
.nav-contact-item--static svg { color: var(--text-400); }

.nav-toggle { display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: var(--radius-sm); }
.nav-toggle span { position: relative; width: 20px; height: 2px; background: var(--navy-900); transition: background var(--dur-fast); }
.nav-toggle span::before, .nav-toggle span::after {
  content: ''; position: absolute; left: 0; width: 20px; height: 2px; background: var(--navy-900);
  transition: transform var(--dur-base) var(--ease-in-out), top var(--dur-base) var(--ease-in-out);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

.mobile-menu {
  position: fixed; inset: var(--header-h) 0 0 0; background: #fff; z-index: 400;
  padding: var(--space-6) var(--space-5) var(--space-8); transform: translateY(-8px); opacity: 0; visibility: hidden;
  transition: transform var(--dur-base) var(--ease-out), opacity var(--dur-base) var(--ease-out), visibility var(--dur-base);
  overflow-y: auto;
}
.mobile-menu.is-open { transform: translateY(0); opacity: 1; visibility: visible; }
.mobile-menu ul { display: flex; flex-direction: column; gap: var(--space-2); }
.mobile-menu a { display: block; padding: var(--space-4) var(--space-2); font-size: 1.1rem; font-family: var(--font-display); font-weight: 700; border-bottom: 1px solid var(--border); }
.mobile-menu-label {
  font-family: var(--font-label); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--text-400); padding: var(--space-3) var(--space-2) 0;
}
.mobile-menu .mobile-contact { display: flex; flex-direction: column; gap: var(--space-3); margin-top: var(--space-7); }

@media (min-width: 960px) {
  .nav-links { display: flex; }
  .nav-contact { display: flex; }
  .nav-toggle, .mobile-menu { display: none; }
}

/* ------------------------------ Sticky Kontakt-Leiste (mobil) ---------------------------------- */
.mobile-contact-bar {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 450;
  display: grid; grid-template-columns: 1fr 1fr; height: var(--mobile-bar-h);
  background: rgba(255,255,255,0.92); backdrop-filter: blur(14px);
  border-top: 1px solid var(--border); box-shadow: 0 -8px 24px rgba(10,26,51,0.1);
}
.mobile-contact-bar a { display: flex; align-items: center; justify-content: center; gap: var(--space-2); font-weight: 700; font-size: 0.9rem; color: var(--navy-900); }
.mobile-contact-bar a svg { width: 20px; height: 20px; color: var(--accent-600); }
.mobile-contact-bar a.whatsapp { border-right: 1px solid var(--border); }
.mobile-contact-bar a.whatsapp:active svg, .mobile-contact-bar a.whatsapp:hover svg { color: var(--whatsapp); }
@media (min-width: 960px) { .mobile-contact-bar { display: none; } }

/* Floating WhatsApp (Desktop) */
.fab-whatsapp {
  position: fixed; bottom: var(--space-6); right: var(--space-6); z-index: 450;
  display: none; align-items: center; justify-content: center;
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--navy-900); color: #fff; box-shadow: var(--shadow-lg);
  transform: translateY(16px); opacity: 0; visibility: hidden;
  transition: transform var(--dur-base) var(--ease-out), opacity var(--dur-base) var(--ease-out), background var(--dur-fast), visibility var(--dur-base);
}
.fab-whatsapp svg { width: 26px; height: 26px; }
.fab-whatsapp:hover { background: var(--whatsapp); }
.fab-whatsapp.is-visible { transform: translateY(0); opacity: 1; visibility: visible; }
@media (min-width: 960px) { .fab-whatsapp { display: flex; } }

/* ------------------------------ Hero ---------------------------------- */
.hero {
  position: relative; isolation: isolate;
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  padding-top: calc(var(--header-h) + var(--space-8)); padding-bottom: var(--space-9);
  overflow: hidden; background: var(--gradient-navy); color: rgba(255,255,255,0.9);
}
@media (max-width: 640px) { .hero { min-height: 0; padding-top: calc(var(--header-h) + var(--space-6)); } }

/* --- Media-Layer: Video-Slot mit animiertem Fallback --- */
.hero-media { position: absolute; inset: 0; z-index: 0; overflow: hidden; background: var(--gradient-navy); will-change: transform; }
.hero-media-fallback { position: absolute; inset: 0; }
.hero-orb {
  position: absolute; border-radius: 50%; filter: blur(70px);
  animation: orbDrift 22s var(--ease-in-out) infinite alternate;
  will-change: transform;
}
.hero-orb--a { width: 620px; height: 620px; top: -220px; right: -160px; background: radial-gradient(circle, rgba(47,168,232,0.32), rgba(47,168,232,0) 70%); animation-duration: 26s; }
.hero-orb--b { width: 480px; height: 480px; bottom: -200px; left: -120px; background: radial-gradient(circle, rgba(62,123,196,0.28), rgba(62,123,196,0) 70%); animation-duration: 30s; animation-delay: -8s; }
.hero-orb--c { width: 320px; height: 320px; top: 40%; left: 46%; background: radial-gradient(circle, rgba(244,248,252,0.14), rgba(244,248,252,0) 70%); animation-duration: 18s; animation-delay: -4s; }
@keyframes orbDrift { 0% { transform: translate(0,0) scale(1); } 100% { transform: translate(-40px, 30px) scale(1.08); } }
.hero-mesh { position: absolute; inset: 0; opacity: 0.5; mix-blend-mode: overlay; }
.hero-noise {
  position: absolute; inset: 0; opacity: 0.05; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.hero-video {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  opacity: 0; transition: opacity 900ms var(--ease-out);
}
.hero-video.is-active { opacity: 1; }
.hero-media-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,26,51,0.55) 0%, rgba(10,26,51,0.72) 55%, rgba(10,26,51,0.92) 100%);
}
.hero-video.is-active ~ .hero-media-overlay { background: linear-gradient(180deg, rgba(10,26,51,0.62) 0%, rgba(10,26,51,0.5) 40%, rgba(10,26,51,0.88) 100%); }

.hero-grid { position: relative; z-index: 1; display: grid; gap: var(--space-8); align-items: center; }
@media (min-width: 960px) { .hero-grid { grid-template-columns: 1.08fr 0.92fr; gap: var(--space-9); } }
.hero .btn-ghost { color: #fff; border-color: rgba(255,255,255,0.4); }
.hero .btn-ghost:hover { background: rgba(255,255,255,0.12); border-color: #fff; }
.hero-copy h1 { color: #fff; margin-bottom: var(--space-5); letter-spacing: -0.03em; line-height: 1.08; }
.hero-copy .lede { color: rgba(255,255,255,0.76); margin-bottom: var(--space-7); }
.eyebrow--light { color: #fff; background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.16); }
.eyebrow--light::before { background: var(--accent-500); }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-5); margin-bottom: var(--space-7); align-items: center; }
.hero-trust { display: flex; flex-wrap: wrap; gap: var(--space-3); }
.hero-trust-chip {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: 0.82rem; font-weight: 600; color: rgba(255,255,255,0.85);
  background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.14);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  padding: var(--space-2) var(--space-4); border-radius: var(--radius-full);
}
.hero-trust-chip svg { width: 15px; height: 15px; color: var(--accent-500); flex-shrink: 0; }

.hero-visual { position: relative; }
.hero-visual-frame { position: relative; animation: heroFloat 7s var(--ease-in-out) infinite; will-change: transform; }
.hero-visual svg { width: 100%; height: auto; }
@keyframes heroFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* Bildungsbezug: Lernpfad wird beim Laden wie von Hand gezeichnet */
.draw-line { stroke-dasharray: 1; stroke-dashoffset: 1; animation: drawPath 2.4s var(--ease-out) 400ms forwards; }
@keyframes drawPath { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) { .draw-line { animation: none; stroke-dashoffset: 0; } }

.hero-float-card {
  position: absolute; display: flex; align-items: center; gap: var(--space-3);
  background: rgba(255,255,255,0.9); color: var(--navy-900);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.6);
  padding: var(--space-3) var(--space-4); border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg); font-size: 0.82rem; font-weight: 700;
  animation: heroFloat 8s var(--ease-in-out) infinite;
}
.hero-float-card .icon-dot {
  width: 34px; height: 34px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(47,168,232,0.14); color: var(--accent-600);
}
.hero-float-card .icon-dot svg { width: 18px; height: 18px; }
.hero-float-card--one { top: 6%; left: -4%; animation-delay: -1s; }
.hero-float-card--two { bottom: 8%; right: -2%; animation-delay: -3.4s; animation-duration: 9s; }
@media (max-width: 720px) {
  .hero-float-card { position: static; margin-top: var(--space-4); box-shadow: var(--shadow-md); animation: none; }
  .hero-float-card--two { display: none; }
}

.hero-scroll-cue {
  position: relative; z-index: 1; display: none; justify-content: center; margin-top: var(--space-8);
}
.hero-scroll-cue span {
  width: 26px; height: 42px; border-radius: var(--radius-full); border: 1.5px solid rgba(255,255,255,0.4);
  position: relative;
}
.hero-scroll-cue span::before {
  content: ''; position: absolute; top: 7px; left: 50%; width: 4px; height: 8px; border-radius: 2px;
  background: rgba(255,255,255,0.75); transform: translateX(-50%);
  animation: scrollCue 2s var(--ease-in-out) infinite;
}
@keyframes scrollCue { 0% { opacity: 1; transform: translate(-50%, 0); } 70% { opacity: 0; transform: translate(-50%, 12px); } 100% { opacity: 0; } }
@media (min-width: 960px) { .hero-scroll-cue { display: flex; } }

@media (prefers-reduced-motion: reduce) {
  .hero-orb, .hero-visual-frame, .hero-float-card, .hero-scroll-cue span::before { animation: none !important; }
}

/* ------------------------------ Media-Showcase (Video-Slot 2) ---------------------------------- */
.media-showcase-grid { display: grid; gap: var(--space-8); align-items: center; }
@media (min-width: 960px) { .media-showcase-grid { grid-template-columns: 0.95fr 1.05fr; gap: var(--space-9); } }
.media-showcase-copy .lede { margin-bottom: var(--space-6); }
.media-slot {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  aspect-ratio: 4 / 3; background: var(--gradient-navy); box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255,255,255,0.08);
}
.media-slot-fallback { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; transition: opacity 500ms var(--ease-out); z-index: 1; }
.media-slot-fallback svg { width: 88%; height: auto; animation: heroFloat 8s var(--ease-in-out) infinite; }
.media-slot-video {
  position: absolute; left: 0; top: -8%; width: 100%; height: 116%; object-fit: cover;
  opacity: 0; transition: opacity 900ms var(--ease-out); will-change: transform; z-index: 2;
}
.media-slot-video.is-active { opacity: 1; }
/* Sobald das echte Video aktiv ist, muss der Fallback darunter
   vollständig verschwinden statt durchzuscheinen. */
.media-slot-video.is-active ~ .media-slot-fallback,
.media-slot-video.is-active ~ .media-slot-fallback-img { opacity: 0; }
.media-slot .hero-float-card { background: rgba(255,255,255,0.94); z-index: 3; }
@media (max-width: 720px) { .media-slot .hero-float-card { display: none; } }
@media (prefers-reduced-motion: reduce) { .media-slot-fallback svg { animation: none; } }
.media-slot-fallback-img { position: absolute; left: 0; top: -8%; width: 100%; height: 116%; object-fit: cover; will-change: transform; transition: opacity 500ms var(--ease-out); z-index: 1; }
.media-slot--wide { aspect-ratio: 21 / 8; }
@media (max-width: 720px) { .media-slot--wide { aspect-ratio: 4 / 3; } }

.photo-frame { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); border: 1px solid var(--border); }
.photo-frame img { width: 100%; height: 100%; object-fit: cover; transition: transform 900ms var(--ease-out); }
.photo-frame:hover img { transform: scale(1.03); }
@media (prefers-reduced-motion: reduce) {
  .media-slot-video, .media-slot-fallback-img { transform: none !important; }
}

/* ------------------------------ Premium-Panel (z.B. Für Unternehmen) ---------------------------------- */
.panel-premium {
  position: relative; padding: var(--space-8) var(--space-6);
  background: linear-gradient(155deg, var(--ice-50) 0%, #ffffff 60%);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm); overflow: hidden;
}
.panel-premium::before {
  content: ''; position: absolute; top: -80px; right: -80px; width: 260px; height: 260px; border-radius: 50%;
  background: radial-gradient(circle, rgba(47,168,232,0.14), rgba(47,168,232,0) 70%);
  pointer-events: none;
}
@media (min-width: 768px) { .panel-premium { padding: var(--space-9) var(--space-8); } }

/* ------------------------------ Manifesto (Warum STC Bildungswerk) ---------------------------------- */
.manifesto-grid { display: grid; gap: var(--space-6); align-items: start; }
@media (min-width: 860px) { .manifesto-grid { grid-template-columns: 0.8fr 2fr; gap: var(--space-8); } }
.manifesto-text {
  font-family: var(--font-display); font-weight: 600; letter-spacing: -0.015em;
  font-size: clamp(1.35rem, 1.6vw + 1rem, 2rem); line-height: 1.45; color: var(--text-900);
  max-width: 60ch;
}

/* ------------------------------ Subject-Chips (Fächer) ---------------------------------- */
.subject-grid { display: flex; flex-wrap: wrap; gap: var(--space-4); }
.subject-chip {
  display: inline-flex; align-items: center; gap: var(--space-3);
  padding: var(--space-4) var(--space-6); border: 1px solid var(--border); border-radius: var(--radius-md);
  background: #fff; font-family: var(--font-display); font-weight: 700; font-size: 1.02rem; color: var(--text-900);
  transition: transform 420ms var(--ease-out), box-shadow 420ms var(--ease-out), border-color 420ms var(--ease-out);
}
.subject-chip:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }
.subject-chip svg { width: 22px; height: 22px; color: var(--accent-600); flex-shrink: 0; transition: transform 420ms var(--ease-out); }
.subject-chip:hover svg { transform: scale(1.1); color: var(--accent-500); }

/* ------------------------------ Cards ---------------------------------- */
.grid { display: grid; gap: var(--space-5); }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid-2 { grid-template-columns: repeat(2, 1fr); } .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } .grid-4 { grid-template-columns: repeat(4, 1fr); } }

.card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); padding: var(--space-6);
  transition: transform 420ms var(--ease-out), box-shadow 420ms var(--ease-out), border-color 420ms var(--ease-out), background 420ms var(--ease-out);
  will-change: transform;
}
.card:hover { transform: translateY(-7px); box-shadow: var(--shadow-lg); border-color: var(--border-strong); background: var(--ice-50); }
.card:active { transform: translateY(-3px) scale(0.99); }
.card-icon {
  width: 48px; height: 48px; border-radius: var(--radius-sm); background: var(--ice-100); color: var(--navy-900);
  display: flex; align-items: center; justify-content: center; margin-bottom: var(--space-5);
  transition: background 420ms var(--ease-out), color 420ms var(--ease-out), transform 420ms var(--ease-out), box-shadow 420ms var(--ease-out);
}
.card-icon svg { width: 24px; height: 24px; transition: transform 420ms var(--ease-out); }
.card:hover .card-icon { background: var(--accent-500); color: #fff; transform: scale(1.08) rotate(-4deg); box-shadow: 0 8px 20px rgba(47,168,232,0.35); }
.card:hover .card-icon svg { transform: scale(1.08); }
.card h3 { margin-bottom: var(--space-3); transition: color var(--dur-base) var(--ease-out); }
.card:hover h3 { color: var(--accent-600); }
.card p { font-size: 0.95rem; }
.card p strong { color: var(--navy-900); font-weight: 700; }
.card--link { display: block; cursor: pointer; }
.card--link:hover strong { color: var(--accent-600); }
.section--navy .card:hover h3 { color: var(--accent-500); }

/* Karten auf dunklem/navy Hintergrund (z.B. Zielgruppen-Sektion) */
.card--on-navy { background: rgba(255,255,255,0.04); border-color: rgba(255,255,255,0.14); }
.card--on-navy p { color: rgba(255,255,255,0.7); }
.card--on-navy:hover { background: rgba(255,255,255,0.09); border-color: rgba(255,255,255,0.3); box-shadow: var(--shadow-lg); }
.card--on-navy:hover h3 { color: var(--accent-500); }

.check-list li { display: flex; align-items: flex-start; gap: var(--space-3); margin-bottom: var(--space-4); font-size: 0.98rem; color: var(--text-900); }
.check-list svg { flex-shrink: 0; width: 20px; height: 20px; color: var(--accent-600); margin-top: 2px; }
.section--navy .check-list li { color: rgba(255,255,255,0.9); }

/* ------------------------------ Steps ---------------------------------- */
.steps { display: grid; gap: var(--space-6); counter-reset: step; grid-template-columns: 1fr; }
@media (min-width: 560px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 768px) { .steps { grid-template-columns: repeat(4, 1fr); } }
@media (min-width: 560px) { .steps.steps-3 { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 640px) and (max-width: 899px) { .steps.steps-5 { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 900px) { .steps.steps-5 { grid-template-columns: repeat(5, 1fr); } }
.step { position: relative; padding-top: var(--space-6); }
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  font-family: var(--font-label); font-size: 0.8rem; color: var(--accent-600);
  display: block; border-top: 2px solid var(--border-strong); padding-top: var(--space-3);
  position: absolute; top: 0; left: 0; width: 100%;
}
.step h3 { margin-bottom: var(--space-2); font-size: 1.05rem; }
.step p { font-size: 0.9rem; }

/* ------------------------------ CTA band ---------------------------------- */
.cta-band { background: var(--gradient-navy); border-radius: var(--radius-lg); padding: var(--space-8) var(--space-6); text-align: center; color: #fff; position: relative; overflow: hidden; box-shadow: var(--shadow-md); transition: box-shadow 420ms var(--ease-out); }
.cta-band:hover { box-shadow: var(--shadow-lg); }
.cta-band::after { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 25% 20%, rgba(47,168,232,0.18), transparent 60%); pointer-events: none; z-index: 0; }
.cta-band h2 { color: #fff; margin-bottom: var(--space-4); position: relative; z-index: 1; }
.cta-band p { color: rgba(255,255,255,0.75); max-width: 50ch; margin-inline: auto; margin-bottom: var(--space-6); position: relative; z-index: 1; }
.cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-4); position: relative; z-index: 1; }
.cta-alt-contact { position: relative; z-index: 1; margin-top: var(--space-6); font-size: 0.88rem; color: rgba(255,255,255,0.6); }
.cta-alt-contact a { color: rgba(255,255,255,0.9); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; transition: color var(--dur-fast) var(--ease-out); }
.cta-alt-contact a:hover { color: var(--accent-500); }

/* ------------------------------ FAQ Accordion ---------------------------------- */
.accordion-item { border-bottom: 1px solid var(--border); }
.accordion-trigger {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
  padding: var(--space-6) var(--space-2); margin-inline: calc(var(--space-2) * -1); text-align: left;
  font-family: var(--font-display); font-weight: 700; font-size: 1.02rem; border-radius: var(--radius-sm);
  transition: color var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out);
}
.accordion-trigger:hover { color: var(--accent-600); background: var(--ice-50); }
.accordion-trigger .icon-plus { flex-shrink: 0; width: 28px; height: 28px; border-radius: 50%; border: 1.5px solid var(--border-strong); display: flex; align-items: center; justify-content: center; position: relative; transition: transform var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out); }
.accordion-trigger:hover .icon-plus { border-color: var(--accent-600); }
.accordion-trigger .icon-plus::before, .accordion-trigger .icon-plus::after { content: ''; position: absolute; background: var(--navy-900); transition: transform var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out); }
.accordion-trigger:hover .icon-plus::before, .accordion-trigger:hover .icon-plus::after { background: var(--accent-600); }
.accordion-trigger .icon-plus::before { width: 12px; height: 1.6px; }
.accordion-trigger .icon-plus::after { width: 1.6px; height: 12px; }
.accordion-item[data-open="true"] .icon-plus { background: var(--navy-900); border-color: var(--navy-900); }
.accordion-item[data-open="true"] .icon-plus::before, .accordion-item[data-open="true"] .icon-plus::after { background: #fff; }
.accordion-item[data-open="true"] .icon-plus::after { transform: rotate(90deg) scaleY(0); }
.accordion-panel { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--dur-slow) var(--ease-in-out); }
.accordion-item[data-open="true"] .accordion-panel { grid-template-rows: 1fr; }
.accordion-panel-inner { overflow: hidden; }
.accordion-panel p { padding-bottom: var(--space-6); max-width: 65ch; }

/* ------------------------------ Forms ---------------------------------- */
.form-grid { display: grid; gap: var(--space-5); }
@media (min-width: 640px) { .form-grid.two-col { grid-template-columns: 1fr 1fr; } }
.field { display: flex; flex-direction: column; gap: var(--space-2); }
.field label { font-size: 0.875rem; font-weight: 700; font-family: var(--font-label); }
.field .optional { font-weight: 400; color: var(--text-400); }
.field input, .field textarea, .field select {
  padding: 0.85rem 1rem; border: 1.5px solid var(--border-strong); border-radius: var(--radius-sm);
  background: #fff; font-size: 0.95rem; transition: border-color var(--dur-fast) var(--ease-out);
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--accent-500); }
.field textarea { resize: vertical; min-height: 130px; }
.field.has-error input, .field.has-error textarea, .field.has-error select { border-color: var(--danger); }
.field-error { font-size: 0.8rem; color: var(--danger); display: none; }
.field.has-error .field-error { display: block; }

/* Anliegen-Auswahl im Tesla-Konfigurator-Stil */
.choice-group { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-3); }
@media (min-width: 640px) { .choice-group { grid-template-columns: repeat(3, 1fr); } }
.choice-group input { position: absolute; opacity: 0; pointer-events: none; }
.choice-group label {
  display: flex; align-items: center; justify-content: center; text-align: center;
  padding: var(--space-4) var(--space-3); border: 1.5px solid var(--border-strong); border-radius: var(--radius-sm);
  font-size: 0.85rem; font-weight: 600; cursor: pointer; transition: all var(--dur-fast) var(--ease-out);
}
.choice-group input:checked + label { background: var(--navy-900); color: #fff; border-color: var(--navy-900); }
.choice-group input:focus-visible + label { box-shadow: var(--shadow-focus); }

.checkbox-field { display: flex; align-items: flex-start; gap: var(--space-3); }
.checkbox-field input { margin-top: 3px; width: 18px; height: 18px; accent-color: var(--navy-900); flex-shrink: 0; }
.checkbox-field label { font-weight: 400; font-size: 0.875rem; color: var(--text-600); }
.checkbox-field a { color: var(--navy-900); text-decoration: underline; }

/* Honeypot – für Menschen unsichtbar, für Bots vorhanden */
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.form-status { display: none; padding: var(--space-4) var(--space-5); border-radius: var(--radius-sm); font-size: 0.9rem; margin-top: var(--space-5); }
.form-status.is-visible { display: block; }
.form-status.success { background: rgba(30,142,90,0.1); color: var(--success); }
.form-status.error { background: rgba(192,57,43,0.1); color: var(--danger); }
.form-status.info { background: var(--ice-100); color: var(--navy-900); }
.form-alt-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-5); }

/* ------------------------------ Footer ---------------------------------- */
.site-footer { background: var(--navy-900); color: rgba(255,255,255,0.68); padding-top: var(--space-9); }
.footer-grid { display: grid; gap: var(--space-7); padding-bottom: var(--space-8); border-bottom: 1px solid rgba(255,255,255,0.1); }
@media (min-width: 768px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; } }
.footer-brand .brand { color: #fff; margin-bottom: var(--space-4); }
.footer-brand p { max-width: 32ch; font-size: 0.9rem; }
.footer-col h4 { font-family: var(--font-label); color: #fff; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: var(--space-4); }
.footer-col li { margin-bottom: var(--space-3); font-size: 0.9rem; }
.footer-col a { transition: color var(--dur-fast); }
.footer-col a:hover { color: #fff; }
.footer-col .with-icon { display: flex; align-items: flex-start; gap: var(--space-2); }
.footer-col .with-icon svg { width: 16px; height: 16px; margin-top: 3px; flex-shrink: 0; color: var(--accent-500); }
.footer-bottom { display: flex; flex-direction: column; gap: var(--space-3); padding-block: var(--space-6); font-size: 0.8rem; }
@media (min-width: 640px) { .footer-bottom { flex-direction: row; justify-content: space-between; align-items: center; } }

/* ------------------------------ Breadcrumbs ---------------------------------- */
.breadcrumbs { padding-top: calc(var(--header-h) + var(--space-6)); padding-bottom: var(--space-2); }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: var(--space-2); font-size: 0.8rem; color: var(--text-400); }
.breadcrumbs a { color: var(--text-400); }
.breadcrumbs a:hover { color: var(--navy-900); }
.breadcrumbs li:not(:last-child)::after { content: '/'; margin-left: var(--space-2); color: var(--border-strong); }

/* ------------------------------ Page hero (interior) ---------------------------------- */
.page-hero { position: relative; padding-top: calc(var(--header-h) + var(--space-6)); padding-bottom: var(--space-8); overflow: visible; }
.page-hero h1 { margin-bottom: var(--space-4); max-width: 20ch; }
.page-hero-illustration { margin-top: var(--space-7); }
.page-hero-illustration svg { max-height: 340px; margin-inline: auto; }

/* Dezente Ambient-Orbs im Hintergrund heller Seiten-Heros */
.page-hero-ambient { position: absolute; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.page-hero-ambient .bg-orb { opacity: 0.7; }

/* Schwebendes Medien-Fenster (Video/Foto) */
.media-slot--float { animation: heroFloat 7.5s var(--ease-in-out) infinite; will-change: transform; }
@media (prefers-reduced-motion: reduce) { .media-slot--float { animation: none; } }

/* ------------------------------ Reveal on scroll ---------------------------------- */
[data-reveal] {
  opacity: 0; transform: translateY(14px); filter: blur(4px);
  transition: opacity 680ms var(--ease-out), transform 680ms var(--ease-out), filter 680ms var(--ease-out);
}
[data-reveal].is-visible { opacity: 1; transform: translateY(0); filter: blur(0); }
[data-reveal-stagger] > * { transition-delay: calc(var(--stagger-i, 0) * 80ms); }

/* Richtungsvarianten für mehr Abwechslung zwischen Sektionen */
[data-reveal="left"] { transform: translateX(-26px); }
[data-reveal="left"].is-visible { transform: translateX(0); }
[data-reveal="right"] { transform: translateX(26px); }
[data-reveal="right"].is-visible { transform: translateX(0); }
[data-reveal="scale"] { transform: scale(0.94); }
[data-reveal="scale"].is-visible { transform: scale(1); }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { filter: none; }
}

/* ------------------------------ Utility ---------------------------------- */
.mt-2 { margin-top: var(--space-2); } .mt-4 { margin-top: var(--space-4); } .mt-6 { margin-top: var(--space-6); } .mt-8 { margin-top: var(--space-8); }
.mb-8 { margin-bottom: var(--space-8); }
.text-center { text-align: center; }
.flex { display: flex; } .flex-wrap { flex-wrap: wrap; } .items-center { align-items: center; }
.gap-3 { gap: var(--space-3); } .gap-4 { gap: var(--space-4); }
.divider { height: 1px; background: var(--border); border: none; margin-block: var(--space-8); }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-md); }
table { width: 100%; border-collapse: collapse; min-width: 560px; }
th, td { text-align: left; padding: var(--space-4) var(--space-5); font-size: 0.9rem; }
thead th { font-family: var(--font-display); background: var(--ice-50); color: var(--text-900); }
tbody tr:not(:last-child) td { border-bottom: 1px solid var(--border); }
tbody td:first-child { font-weight: 700; }

.info-box { background: var(--ice-50); border: 1px solid var(--border); border-radius: var(--radius-md); padding: var(--space-6); font-size: 0.9rem; }
.info-box strong { color: var(--navy-900); }

/* 404 */
.error-page { min-height: 100svh; display: flex; align-items: center; justify-content: center; text-align: center; padding: var(--space-6); background: var(--gradient-navy); }
.error-page .code {
  font-family: var(--font-label); font-size: clamp(4rem, 12vw, 8rem); font-weight: 700;
  color: var(--accent-500); line-height: 1;
}
.error-page h1, .error-page p { color: #fff; }
.error-page p { color: rgba(255,255,255,0.7); }