/* ==========================================================================
   Rheinschleife digital – Landingpage
   Tokens: Navy #0C3A5E · Grün #1D9E75 (Buttons: #127A5A) · Blau #1D6FA5
           Himmelblau #B0CDE0 · Papier #FAFAF8
   Typografie: Space Grotesk (Headlines) · Inter (Text) · JetBrains Mono (Tags)
   ========================================================================== */

:root {
  --navy: #0C3A5E;
  --navy-soft: #143f66;
  --green: #1D9E75;
  --green-deep: #127A5A;
  --green-deep-hover: #0F6749;
  --blue: #1D6FA5;
  --sky: #B0CDE0;
  --sky-tint: #EEF3F1;
  --paper: #FAFAF8;
  --ink: #223138;
  --muted: #5C6A70;
  --border: #E1E6E4;
  --white: #FFFFFF;

  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, monospace;

  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 12px 30px -12px rgba(12, 58, 94, 0.18);
  --content-width: 1120px;
}

@font-face {
  font-family: "Space Grotesk";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/fonts/space-grotesk-500.woff2") format("woff2");
}
@font-face {
  font-family: "Space Grotesk";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("assets/fonts/space-grotesk-600.woff2") format("woff2");
}
@font-face {
  font-family: "Space Grotesk";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("assets/fonts/space-grotesk-700.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/inter-400.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/fonts/inter-500.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("assets/fonts/inter-600.woff2") format("woff2");
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-400.woff2") format("woff2");
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-500.woff2") format("woff2");
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--navy);
  line-height: 1.15;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 4.5vw + 1rem, 3.4rem); }
h2 { font-size: clamp(1.6rem, 2.6vw + 1rem, 2.4rem); max-width: 24ch; }
h3 { font-size: 1.15rem; }

p { margin: 0 0 1em; }
a { color: inherit; }

.wrap {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
}
.wrap-narrow { max-width: 720px; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 12px; top: -60px;
  background: var(--navy); color: var(--white);
  padding: 10px 16px; border-radius: var(--radius-sm);
  z-index: 100; transition: top 0.2s ease;
}
.skip-link:focus { top: 12px; }

:focus-visible {
  outline: 3px solid var(--green);
  outline-offset: 3px;
}

.eyebrow {
  font-family: var(--font-mono);
  color: var(--green-deep);
  font-size: 0.85rem;
  letter-spacing: 0.01em;
  margin: 0 0 0.9em;
}
.eyebrow-light { color: #7FD9B6; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
  cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--green-deep);
  color: var(--white);
}
.btn-primary:hover { background: var(--green-deep-hover); }
.btn-ghost {
  background: transparent;
  color: var(--navy);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--navy); }
.btn-outline {
  background: transparent;
  color: var(--green-deep);
  border-color: var(--green-deep);
}
.btn-outline:hover { background: rgba(18, 122, 90, 0.08); }
.inline-link {
  color: var(--green-deep);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 250, 248, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.brand-mark { flex-shrink: 0; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--navy);
  font-size: 1.15rem;
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-tag {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--green-deep);
  font-size: 0.72rem;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.primary-nav a {
  text-decoration: none;
  color: var(--ink);
  font-weight: 500;
  font-size: 0.96rem;
}
.primary-nav a:hover { color: var(--green-deep); }
.nav-cta {
  background: var(--green-deep);
  color: var(--white) !important;
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 600 !important;
}
.nav-cta:hover { background: var(--green-deep-hover); }

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}
.burger, .burger::before, .burger::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--navy);
  position: relative;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.burger::before, .burger::after { content: ""; position: absolute; left: 0; }
.burger::before { top: -7px; }
.burger::after { top: 7px; }

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .primary-nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 24px 20px;
    gap: 4px;
    display: none;
  }
  .primary-nav.is-open { display: flex; }
  .primary-nav a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 4px 0;
  }
  .nav-cta {
    align-self: flex-start;
    min-height: 44px;
    padding: 0 18px;
  }
}

/* ---------- Hero ---------- */
.hero { padding: 64px 0 40px; overflow: hidden; }
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}
.hero-lead {
  max-width: 46ch;
  color: var(--muted);
  font-size: 1.08rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 24px 0 18px;
}
.hero-meta {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 22px;
}

/* Zielgruppen-Chips */
.audience-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  font-weight: 600;
  margin: 0 0 10px;
}
.chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 0;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 999px;
}
.chip svg { color: var(--green-deep); flex-shrink: 0; }
.chip-accent {
  color: var(--green-deep);
  background: rgba(18, 122, 90, 0.06);
  border-color: rgba(18, 122, 90, 0.25);
  font-weight: 500;
}

/* Hero-Showcase (Produkt-Mockups) */
.hero-visual {
  width: 100%;
  position: relative;
  max-width: 380px;
  margin: 0 auto;
}
.showcase-glow {
  position: absolute;
  inset: -30px -10px;
  background: radial-gradient(circle at 60% 30%, rgba(29, 111, 165, 0.12), transparent 65%),
              radial-gradient(circle at 30% 80%, rgba(29, 158, 117, 0.10), transparent 60%);
  filter: blur(6px);
  z-index: -1;
}
.showcase-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 18px;
}
.showcase-phone { position: relative; z-index: 2; }
.showcase-browser {
  margin: -14px 0 0 34px;
  position: relative;
  z-index: 1;
  padding: 14px 16px 16px;
}
.showcase-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
  margin-bottom: 14px;
}
.showcase-head-left { display: flex; align-items: center; gap: 10px; }
.showcase-icon {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: rgba(18, 122, 90, 0.1);
  color: var(--green-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.showcase-title { font-family: var(--font-display); font-weight: 700; font-size: 0.85rem; color: var(--navy); }
.showcase-subtitle { font-size: 0.72rem; color: var(--muted); }
.showcase-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--muted);
  background: var(--sky-tint);
  border: 1px solid var(--border);
  padding: 3px 8px;
  border-radius: 999px;
  white-space: nowrap;
}
.showcase-block {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 12px;
}
.showcase-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 6px;
}
.showcase-row-label { font-size: 0.78rem; font-weight: 600; color: var(--navy); }
.showcase-points {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--green-deep);
  background: rgba(18, 122, 90, 0.08);
  padding: 2px 7px;
  border-radius: 999px;
  white-space: nowrap;
}
.showcase-row-sub {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--muted);
}
.showcase-ok {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  color: var(--green-deep);
  font-weight: 600;
}
.showcase-bar {
  width: 100%;
  height: 5px;
  background: var(--border);
  border-radius: 999px;
  margin-top: 8px;
  overflow: hidden;
}
.showcase-bar span { display: block; width: 100%; height: 100%; background: var(--green-deep); border-radius: 999px; }
.showcase-note {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--muted);
}
.showcase-note svg { color: var(--blue); flex-shrink: 0; }

.showcase-browser-bar {
  display: flex;
  align-items: center;
  gap: 5px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
  margin-bottom: 10px;
}
.showcase-browser-bar span:not(.showcase-url) {
  width: 7px; height: 7px; border-radius: 50%; background: var(--border);
}
.showcase-url {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--muted);
  margin-left: 6px;
}
.showcase-row-flat { background: none; border: none; padding: 0; margin-bottom: 10px; }
.showcase-row-flat .showcase-row-label { display: flex; align-items: center; gap: 6px; font-size: 0.75rem; }
.showcase-row-flat .showcase-row-label svg { color: var(--green-deep); flex-shrink: 0; }
.showcase-time { font-size: 0.68rem; color: var(--muted); white-space: nowrap; }
.showcase-foot {
  display: flex;
  gap: 14px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.showcase-foot span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.68rem;
  color: var(--muted);
}
.showcase-foot svg { color: var(--green-deep); }

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { max-width: 300px; margin: 12px auto 0; }
}

/* ---------- Sections ---------- */
.section { padding: 80px 0; }
.section-tinted { background: var(--sky-tint); }
.section-lead {
  max-width: 62ch;
  color: var(--muted);
  font-size: 1.05rem;
}
.section-lead.light { color: #C9D6DC; }

.section-dark {
  background: var(--navy);
  color: var(--white);
}
h2.light { color: var(--white); }

/* ---------- Cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-top: 40px;
}
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 22px;
  position: relative;
}
.card-highlight { border: 2px solid rgba(18, 122, 90, 0.35); }
.highlight-badge {
  position: absolute;
  top: -12px;
  right: 18px;
  background: var(--green-deep);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  padding: 3px 11px;
  border-radius: 999px;
  box-shadow: 0 2px 6px rgba(18, 122, 90, 0.3);
}
.card-index {
  font-family: var(--font-mono);
  color: var(--sky);
  font-weight: 500;
  font-size: 0.95rem;
  display: block;
  margin-bottom: 10px;
}
.card p { color: var(--muted); font-size: 0.97rem; }
.card-link {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--green-deep);
  text-decoration: none;
  font-weight: 500;
}
.card-link:hover { text-decoration: underline; }

@media (max-width: 980px) {
  .cards { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .cards { grid-template-columns: 1fr; }
}

/* ---------- Projekte (Referenzen) ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 36px;
}
.project-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.project-shot {
  aspect-ratio: 16 / 10;
  background: var(--sky-tint);
  overflow: hidden;
}
.project-shot img { width: 100%; height: 100%; object-fit: cover; display: block; }
.project-body { padding: 22px 24px 24px; }
.project-body h3 { margin-bottom: 8px; }
.project-body p { color: var(--muted); font-size: 0.95rem; margin: 0 0 14px; }

@media (max-width: 760px) {
  .projects-grid { grid-template-columns: 1fr; }
}

/* ---------- Referenz / Case Study ---------- */
.case-study {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin: 40px 0 28px;
}
.case-step {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 22px;
}
.case-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--green-deep);
  background: rgba(18, 122, 90, 0.08);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.case-step p { color: var(--muted); margin: 0; font-size: 0.96rem; }

@media (max-width: 900px) {
  .case-study { grid-template-columns: 1fr; }
}

/* ---------- Ablauf ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 40px;
}
.step { position: relative; padding-left: 4px; }
.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 16px;
}
.step h3 { margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 0.96rem; margin: 0; }

@media (max-width: 900px) {
  .steps { grid-template-columns: 1fr; gap: 32px; }
}
.tag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 32px 0;
}
.tag-btn {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--navy);
  background: var(--white);
  border: 1px solid var(--border);
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}
.tag-btn:hover { border-color: var(--green-deep); color: var(--green-deep); }
.tag-btn-active {
  background: var(--green-deep);
  border-color: var(--green-deep);
  color: var(--white);
}

@keyframes btnPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.04); }
  100% { transform: scale(1); }
}
.btn-pulse { animation: btnPulse 0.25s ease; }
@media (prefers-reduced-motion: reduce) {
  .btn-pulse { animation: none; }
}

.invite-box {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  display: grid;
  gap: 20px;
  max-width: 720px;
}
.invite-box p { color: var(--muted); margin: 0; }

/* ---------- Haltung / Quote ---------- */
.quote {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2vw + 0.8rem, 1.9rem);
  color: var(--navy);
  margin: 0 0 0.5em;
  font-weight: 600;
  line-height: 1.35;
}
.quote-attribution {
  font-family: var(--font-mono);
  color: var(--green-deep);
  font-size: 0.9rem;
  margin-bottom: 1.6em;
}

/* ---------- Kontakt ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 36px;
}
.contact-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-decoration: none;
  color: var(--white);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: var(--radius);
  padding: 22px;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}
.contact-item:hover { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.3); }
.contact-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #7FD9B6;
  text-transform: lowercase;
}
.contact-value { font-weight: 600; font-size: 1.05rem; }

@media (max-width: 760px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy);
  color: #C9D6DC;
  padding: 26px 0 40px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.footer-inner p { margin: 0; font-size: 0.9rem; }
.footer-nav {
  display: flex;
  gap: 20px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.footer-nav a { color: var(--sky); text-decoration: none; }
.footer-nav a:hover { text-decoration: underline; }

/* Eigenständige Impressum-/Datenschutz-Seiten */
.legal-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}
.legal-page h1 { margin-bottom: 0.3em; }
.legal-page h2 {
  font-size: 1.15rem;
  margin-top: 2em;
}
.legal-page p, .legal-page li { color: var(--muted); }
.legal-page .back-link {
  display: inline-block;
  margin-bottom: 32px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--green-deep);
  text-decoration: none;
}
.legal-page .back-link:hover { text-decoration: underline; }