/* =============================================================
   nobrain IT — Stylesheet
   Reines CSS, keine Frameworks. Struktur:
   1. Farbpaletten (CSS-Variablen) — 3 Vorschläge, Palette A aktiv
   2. Typografie- & Abstands-Variablen
   3. Reset & Grundlagen
   4. Layout-Hilfsklassen
   5. Buttons & Formularelemente
   6. Header & Navigation
   7. Hero
   8. Sections generisch
   9. Leistungen (Produktkarten)
   10. Projekte (Galerie + Lightbox)
   11. Über uns + Retro-Strip
   12. Warum wir (Trust-Grid)
   13. Kontakt
   14. Footer
   15. Rechtstexte (Impressum/Datenschutz)
   16. Scroll-Reveal-Animationen
   17. Responsive Breakpoints: 360px (Basis) → 600 → 768 → 1024 → 1440
   ============================================================= */

/* -------------------------------------------------------------
   1. FARBPALETTEN
   Drei fertige Paletten als CSS-Variablen. Palette A ist aktiv.
   Zum Wechseln: Block "Palette A" auskommentieren und B oder C
   aktivieren (Variablennamen sind identisch, einfach tauschen).
   Kontrastwerte (WCAG) wurden gegen --color-bg / --color-surface
   geprüft: Text ≥ 7:1, Accent-Text ≥ 7:1 (AA/AAA-sicher).
   ------------------------------------------------------------- */
:root {
  /* ---- Palette A: "Neon-Türkis / Anthrazit-Navy" ----
  --color-bg: #0f1620;
  --color-bg-alt: #131c28;
  --color-surface: #1a2532;
  --color-surface-hover: #212f3d;
  --color-border: #30465c;
  --color-text: #eef2f6;
  --color-text-muted: #a9b8ca;
  --color-accent: #2fe6c9;
  --color-accent-strong: #1fc7ac;
  --color-accent-soft: rgba(47, 230, 201, 0.13);
  --color-on-accent: #0a1118;
  */

  /* ---- Palette B: "Signal-Orange / Tiefes Blau" ----
     --color-bg: #10141c;
     --color-bg-alt: #151a24;
     --color-surface: #1b212c;
     --color-surface-hover: #232a37;
     --color-border: #384254;
     --color-text: #f5f2ee;
     --color-text-muted: #b3aca3;
     --color-accent: #ff7a33;
     --color-accent-strong: #e8631f;
     --color-accent-soft: rgba(255, 122, 51, 0.14);
     --color-on-accent: #170b04;
  */

  /* ---- Palette C: "Retro-Arcade Violett" (AKTIV) ---- */
  --color-bg: #120f1c;
  --color-bg-alt: #171325;
  --color-surface: #1e1930;
  --color-surface-hover: #262038;
  --color-border: #3c3356;
  --color-text: #f2eefc;
  --color-text-muted: #b6a9d6;
  --color-accent: #c07bff;
  --color-accent-strong: #a855f7;
  --color-accent-soft: rgba(192, 123, 255, 0.16);
  --color-on-accent: #140a1f;

  /* Statusfarben (paletten-unabhängig) */
  --color-success: #4ade80;

  /* ---- 2. TYPOGRAFIE ----
     Bewusst System-Font-Stacks statt Google Fonts: 0 externe
     Requests, offline-fähig, kein Render-Blocking. Der "Retro-
     Gaming"-Akzent kommt über die Mono-Stack (Terminal-Anmutung)
     statt über eine geladene Pixel-Schrift. */
  --font-heading: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", "Courier New", monospace;

  --step-h1: clamp(2.25rem, 1.6rem + 2.8vw, 3.75rem);
  --step-h2: clamp(1.75rem, 1.4rem + 1.6vw, 2.5rem);
  --step-h3: clamp(1.25rem, 1.1rem + 0.6vw, 1.5rem);
  --step-lead: clamp(1.05rem, 1rem + 0.4vw, 1.25rem);
  --step-body: 1rem;
  --step-small: 0.875rem;
  --step-eyebrow: 0.8125rem;

  --leading-tight: 1.15;
  --leading-normal: 1.5;
  --leading-relaxed: 1.7;

  /* ---- Abstände ---- */
  --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: 4.5rem;
  --space-9: 6rem;

  /* ---- Radien, Schatten, Übergänge ---- */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 999px;

  --shadow-md: 0 16px 32px -12px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 24px 48px -16px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 0 1px var(--color-border), 0 20px 44px -18px rgba(0, 0, 0, 0.65);

  --transition-fast: 150ms ease;
  --transition-base: 260ms cubic-bezier(0.4, 0, 0.2, 1);

  --container-width: 1200px;
  --z-header: 100;
  --z-overlay: 500;
}

/* -------------------------------------------------------------
   3. RESET & GRUNDLAGEN
   ------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

html {
  color-scheme: dark;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--step-body);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
  padding: 0;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  line-height: var(--leading-tight);
  font-weight: 800;
  letter-spacing: -0.01em;
}

p {
  max-width: 66ch;
}

/* Fokus-Zustände: sichtbar & konsistent für Tastaturnutzung */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

::selection {
  background: var(--color-accent);
  color: var(--color-on-accent);
}

/* -------------------------------------------------------------
   4. LAYOUT-HILFSKLASSEN
   ------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

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

.skip-link {
  position: absolute;
  top: -3rem;
  left: var(--space-4);
  z-index: 1000;
  background: var(--color-accent);
  color: var(--color-on-accent);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-weight: 700;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--step-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.eyebrow::before {
  content: "";
  width: 1.4em;
  height: 2px;
  background: var(--color-accent);
  display: inline-block;
}

.accent-text {
  color: var(--color-accent);
}

.section {
  padding-block: var(--space-9);
  position: relative;
}

/* Versatz für Sprungmarken, damit Überschriften nicht hinter dem
   sticky Header verschwinden. */
section[id],
article[id] {
  scroll-margin-top: 94px;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section-head {
  max-width: 46rem;
  margin-bottom: var(--space-7);
}

.section-head h2 {
  font-size: var(--step-h2);
  margin-top: var(--space-3);
}

.section-head p {
  color: var(--color-text-muted);
  font-size: var(--step-lead);
  margin-top: var(--space-4);
}

.section-foot {
  margin-top: var(--space-7);
  text-align: center;
}

/* -------------------------------------------------------------
   5. BUTTONS
   ------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.85em 1.5em;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.95rem;
  white-space: nowrap;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
    background-color var(--transition-fast), color var(--transition-fast),
    border-color var(--transition-fast);
  border: 1.5px solid transparent;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-on-accent);
  box-shadow: 0 10px 24px -8px var(--color-accent-soft);
}

.btn--primary:hover {
  background: var(--color-accent-strong);
  box-shadow: 0 14px 30px -8px rgba(47, 230, 201, 0.35);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn--sm {
  padding: 0.6em 1.1em;
  font-size: 0.85rem;
}

.btn svg {
  width: 1.1em;
  height: 1.1em;
  flex-shrink: 0;
}

/* -------------------------------------------------------------
   6. HEADER & NAVIGATION
   ------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(15, 22, 32, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: var(--space-4);
}

.logo-link {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-link img {
  height: 34px;
  width: auto;
  /* Logo ist schwarze Linienzeichnung auf transparentem Grund —
     für den dunklen Header/Footer invertiert (siehe unten). */
  filter: invert(1) brightness(1.15);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-7);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

/* :not(.btn) hält die CTA-Schaltfläche im mobilen Menü ("Beratung
   anfragen") bewusst außen vor — sonst gewinnt diese Regel per
   Spezifität gegen .btn--primary und der Button-Text erscheint in
   gedämpftem Grau-Blau statt in dunkler Schrift auf Türkis (kaum
   lesbar). */
.nav-links a:not(.btn) {
  position: relative;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  padding-block: var(--space-2);
  transition: color var(--transition-fast);
}

.nav-links a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -2px;
  height: 2px;
  background: var(--color-accent);
  transition: right var(--transition-base);
}

.nav-links a:not(.btn):hover,
.nav-links a:not(.btn).is-active {
  color: var(--color-text);
}

.nav-links a:not(.btn):hover::after,
.nav-links a:not(.btn).is-active::after {
  right: 0;
}

.nav-cta {
  display: none;
  align-items: center;
  gap: var(--space-4);
}

.nav-links-cta {
  margin-top: var(--space-5);
  width: 100%;
}

.nav-links-cta .btn {
  width: 100%;
  justify-content: center;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* -------------------------------------------------------------
   7. HERO
   ------------------------------------------------------------- */
.hero {
  padding-block: var(--space-8) var(--space-9);
  overflow: hidden;
  position: relative;
}

.hero .container {
  display: grid;
  gap: var(--space-8);
  align-items: center;
}

.hero-content h1 {
  font-size: var(--step-h1);
  margin-top: var(--space-4);
}

.hero-content .eyebrow {
  margin-top: 0;
}

.hero-lead {
  font-size: var(--step-lead);
  color: var(--color-text-muted);
  margin-top: var(--space-5);
  max-width: 40ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-7);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.hero-meta div strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--color-accent);
}

.hero-meta div span {
  font-size: var(--step-small);
  color: var(--color-text-muted);
}

.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 460px;
  margin-inline: auto;
}

.hero-blob {
  position: absolute;
  inset: 6%;
  background: radial-gradient(circle at 35% 30%, var(--color-accent) 0%, transparent 70%);
  opacity: 0.25;
  filter: blur(30px);
  border-radius: 50%;
}

.hero-circuit {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-brain {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 58%;
  height: 58%;
  color: var(--color-text);
  transform: translate(-50%, -50%);
  filter: drop-shadow(0 20px 30px rgba(0, 0, 0, 0.45));
}

.hero-circuit .pulse-node {
  animation: pulse-glow 2.6s ease-in-out infinite;
  transform-origin: center;
}

.hero-circuit .pulse-node--delay {
  animation-delay: 1.1s;
}

@keyframes pulse-glow {
  0%,
  100% {
    opacity: 0.55;
    r: 5;
  }
  50% {
    opacity: 1;
    r: 7;
  }
}

/* Signale, die entlang der Leiterbahnen "rasen". Pfad-Koordinaten sind
   identisch zu den gleichnamigen <path>-Elementen im HTML — offset-path
   akzeptiert zwar auch url(#id)-Referenzen auf SVG-Elemente, aber die
   inline path()-Syntax hat die verlässlichere Browser-Unterstützung. */
.signal-dot {
  offset-rotate: 0deg;
  filter: drop-shadow(0 0 4px var(--color-accent));
  animation: signal-travel 2.4s linear infinite;
}

.signal-dot--1 {
  offset-path: path("M260 95 L285 70 L285 40");
  animation-delay: 0s;
}

.signal-dot--3 {
  offset-path: path("M320 200 L350 200 L380 170");
  animation-delay: 0.5s;
}

.signal-dot--5 {
  offset-path: path("M260 305 L260 335 L290 365");
  animation-delay: 1s;
}

.signal-dot--7 {
  offset-path: path("M100 270 L75 295 L75 330");
  animation-delay: 1.5s;
}

.signal-dot--9 {
  offset-path: path("M100 130 L70 130 L40 100");
  animation-delay: 2s;
}

@keyframes signal-travel {
  0% {
    offset-distance: 0%;
    opacity: 0;
  }
  8%,
  85% {
    opacity: 1;
  }
  100% {
    offset-distance: 100%;
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-circuit .pulse-node {
    animation: none;
  }

  .signal-dot {
    animation: none;
    opacity: 0;
  }
}

/* -------------------------------------------------------------
   9. LEISTUNGEN — Produktkarten
   ------------------------------------------------------------- */
.cards-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
  align-items: start;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), border-color var(--transition-base),
    background-color var(--transition-base);
}

.card:hover {
  transform: translateY(-4px) rotate(-0.4deg);
  border-color: var(--color-accent);
  background: var(--color-surface-hover);
}

.card-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  margin-bottom: var(--space-5);
  transition: transform var(--transition-base);
}

.card:hover .card-icon {
  transform: scale(1.08);
}

.card-icon svg {
  width: 30px;
  height: 30px;
}

.card h3 {
  font-size: var(--step-h3);
}

.card p {
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  font-size: 0.95rem;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.card-tags li {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  padding: 0.3em 0.7em;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
}

.card-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.card-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.card-list svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-accent);
}

.card .btn {
  margin-top: var(--space-6);
  align-self: flex-start;
}

.card--featured {
  border-color: var(--color-accent);
  background: linear-gradient(160deg, var(--color-surface), var(--color-bg-alt));
}

/* -------------------------------------------------------------
   10. PROJEKTE — Galerie & Lightbox
   ------------------------------------------------------------- */
.gallery-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}

.gallery-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.gallery-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
}

.gallery-trigger {
  display: block;
  width: 100%;
  text-align: left;
  cursor: zoom-in;
}

.gallery-visual {
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  /* Icon-Farbe hell halten: der Hintergrund ist ein dunkles Gradient,
     keine helle Akzentfläche — var(--color-on-accent) wäre hier
     fast unsichtbar. */
  color: var(--color-text);
}

.gallery-visual svg {
  width: 34%;
  height: 34%;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.35));
}

.gallery-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 20%, rgba(255, 255, 255, 0.16), transparent 55%);
}

.gallery-visual--1 {
  background: linear-gradient(135deg, #23384a, #0f1620);
}

.gallery-visual--2 {
  background: linear-gradient(135deg, #2c2140, #171225);
}

.gallery-visual--3 {
  background: linear-gradient(135deg, #123b3a, #0f1620);
}

.gallery-visual--4 {
  background: linear-gradient(135deg, #3a2c17, #1a1610);
}

.gallery-body {
  padding: var(--space-5);
}

.gallery-body .tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.gallery-body h3 {
  font-size: 1.15rem;
  margin-top: var(--space-2);
}

.gallery-body p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-top: var(--space-2);
}

.gallery-note {
  margin-top: var(--space-6);
  color: var(--color-text-muted);
  font-size: 0.875rem;
  text-align: center;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
  background: rgba(6, 9, 13, 0.86);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.lightbox[data-open="true"] {
  opacity: 1;
  visibility: visible;
}

.lightbox-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  max-width: 640px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  transform: scale(0.94) translateY(10px);
  transition: transform var(--transition-base);
  box-shadow: var(--shadow-lg);
}

.lightbox[data-open="true"] .lightbox-panel {
  transform: scale(1) translateY(0);
}

.lightbox-visual {
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-visual svg {
  width: 40%;
  height: 40%;
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.35));
}

.lightbox-body {
  padding: var(--space-6);
}

.lightbox-body .tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.lightbox-body h3 {
  font-size: var(--step-h3);
  margin-top: var(--space-2);
}

.lightbox-body p {
  color: var(--color-text-muted);
  margin-top: var(--space-3);
}

.lightbox-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(6, 9, 13, 0.55);
  color: var(--color-text);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.lightbox-close:hover {
  background: var(--color-accent);
  color: var(--color-on-accent);
  transform: rotate(90deg);
}

.lightbox-close svg {
  width: 20px;
  height: 20px;
}

/* -------------------------------------------------------------
   11. ÜBER UNS + RETRO-STRIP
   ------------------------------------------------------------- */
.about-grid {
  display: grid;
  gap: var(--space-8);
  align-items: center;
}

.about-media {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, var(--color-surface), var(--color-bg-alt));
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.about-media::before {
  content: "";
  position: absolute;
  width: 60%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-accent) 0%, transparent 70%);
  opacity: 0.18;
  filter: blur(20px);
}

.about-media svg {
  width: 46%;
  height: auto;
  position: relative;
  opacity: 0.35;
  color: var(--color-text);
}

.about-media figcaption {
  position: absolute;
  bottom: var(--space-4);
  left: var(--space-4);
  right: var(--space-4);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  background: rgba(6, 9, 13, 0.55);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
}

.about-text .lead {
  font-size: var(--step-lead);
  color: var(--color-text-muted);
  margin-top: var(--space-4);
}

.about-text p + p {
  margin-top: var(--space-4);
  color: var(--color-text-muted);
}

.about-values {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.about-values li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: 0.9rem;
}

.about-values svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.retro-strip {
  margin-top: var(--space-9);
  padding-top: var(--space-8);
  border-top: 1px dashed var(--color-border);
}

.retro-strip-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
}

.retro-strip-head h3 {
  font-size: var(--step-h3);
  transform: rotate(-1deg);
}

.retro-strip-head span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.retro-compare-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.retro-compare-rows {
  display: flex;
  flex-direction: column;
}

.retro-compare-rows li {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  align-items: start;
  padding-block: var(--space-3);
  border-bottom: 1px dashed var(--color-border);
  font-size: 0.9rem;
}

.retro-compare-rows li:last-child {
  border-bottom: none;
}

.retro-compare-rows li span:first-child {
  color: var(--color-text-muted);
}

.retro-compare-rows li span:last-child {
  color: var(--color-text);
  font-weight: 600;
}

/* -------------------------------------------------------------
   12. WARUM WIR — Trust-Grid
   ------------------------------------------------------------- */
.trust-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: start;
}

.trust-item {
  text-align: left;
}

.trust-item .card-icon {
  margin-bottom: var(--space-4);
}

.trust-item h3 {
  font-size: 1.1rem;
}

.trust-item p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-top: var(--space-2);
}

/* -------------------------------------------------------------
   13. KONTAKT
   ------------------------------------------------------------- */
.contact-grid {
  display: grid;
  gap: var(--space-7);
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact-list li {
  display: flex;
  gap: var(--space-4);
}

.contact-list .card-icon {
  margin-bottom: 0;
  flex-shrink: 0;
}

.contact-list h3 {
  font-size: 1rem;
}

.contact-list a,
.contact-list address,
.contact-list p {
  color: var(--color-text-muted);
  font-style: normal;
  margin-top: var(--space-1);
  font-size: 0.95rem;
}

.contact-list a:hover {
  color: var(--color-accent);
}

.map-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  aspect-ratio: 4 / 3;
  background: var(--color-surface);
}

.map-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  /* Dunkles Kartendesign ohne Maps-API: Farben invertieren und den
     Farbton wieder zurückdrehen, damit z. B. Wasser blau bleibt. */
  filter: invert(92%) hue-rotate(180deg) contrast(0.86) brightness(0.96);
}

/* -------------------------------------------------------------
   14. FOOTER
   ------------------------------------------------------------- */
.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-8) var(--space-6);
}

.footer-grid {
  display: grid;
  gap: var(--space-7);
  grid-template-columns: 1fr;
}

.footer-brand img {
  height: 30px;
  width: auto;
  aspect-ratio: 720 / 144;
  filter: invert(1) brightness(1.15);
}

.footer-brand p {
  margin-top: var(--space-4);
  color: var(--color-text-muted);
  font-size: 0.9rem;
  max-width: 32ch;
}

.footer-col h3 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  font-weight: 700;
}

.footer-col ul {
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-col a {
  font-size: 0.9rem;
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer-bottom nav {
  display: flex;
  gap: var(--space-5);
}

.footer-bottom a:hover {
  color: var(--color-accent);
}

/* -------------------------------------------------------------
   15. RECHTSTEXTE (Impressum / Datenschutz)
   ------------------------------------------------------------- */
.legal-content {
  max-width: 70ch;
}

.legal-content h2 {
  font-size: 1.3rem;
  margin-top: var(--space-8);
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content p,
.legal-content li {
  color: var(--color-text-muted);
  margin-top: var(--space-3);
}

.legal-content ul {
  list-style: disc;
  padding-left: 1.2em;
}

.legal-content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: var(--color-border);
}

.legal-content strong {
  color: var(--color-text);
}

.legal-placeholder {
  display: inline-block;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  padding: 0.1em 0.5em;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.85em;
}

/* -------------------------------------------------------------
   16. SCROLL-REVEAL
   Regel bewusst unter ".js" verschachtelt: Ohne JavaScript (oder falls
   script.js nicht lädt) bleibt der Inhalt regulär sichtbar, statt für
   immer bei opacity:0 zu hängen. Die ".js"-Klasse wird per Inline-Skript
   im <head> gesetzt, noch bevor der Inhalt gerendert wird.
   ------------------------------------------------------------- */
.js [data-animate] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.js [data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .js [data-animate] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* -------------------------------------------------------------
   17. RESPONSIVE BREAKPOINTS
   Konvention: 360 (Basis, mobile-first) → 600 → 768 → 1024 → 1440
   ------------------------------------------------------------- */

/* ≥600px: kleine Tablets / große Phones */
@media (min-width: 600px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

/* ≥768px: Tablets */
@media (min-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero .container {
    grid-template-columns: 1.1fr 0.9fr;
  }

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

  .contact-grid {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

/* ≥1024px: Desktop */
@media (min-width: 1024px) {
  .nav-links {
    display: flex;
  }

  .nav-cta {
    display: flex;
  }

  .nav-links-cta {
    display: none;
  }

  .cards-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Projekte bleiben bewusst ein festes 2×2-Grid (siehe ≥768px),
     kein 3-Spalten-Umbruch auf großen Screens. */

  .trust-grid {
    grid-template-columns: repeat(5, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
  }
}

/* <1024px: Mobile-Navigation aktivieren */
@media (max-width: 1023.98px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    inset: 76px 0 0 0;
    height: calc(100vh - 76px);
    background: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: var(--space-2);
    padding: var(--space-6) var(--space-5);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
  }

  .nav-links[data-open="true"] {
    transform: translateX(0);
  }

  .nav-links a {
    width: 100%;
    padding: var(--space-3) 0;
    font-size: 1.1rem;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-links a::after {
    display: none;
  }

}

/* ≥1440px: großer Desktop — etwas mehr Luft */
@media (min-width: 1440px) {
  :root {
    --container-width: 1280px;
  }

  .hero-lead {
    max-width: 44ch;
  }
}