/* ============================================================
   Trinkwasser in Bestform — Design Tokens
   Palette: an viwa (perma-trade) angepasst — Cyan/Türkis auf Weiß,
   Anthrazit als Kontrastfarbe statt Kupfer.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,500;0,9..144,600;1,9..144,500&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Colors — an viwa-Markenfarben angeglichen (Logo-Cyan ca. #4FB0BE) */
  --teal-deep: #123B42;
  --teal-primary: #3FAEC0;
  --green-accent: #2E93A6;
  --teal-light: #EAF7F9;
  --copper: #1F2937;
  --copper-light: #4B5563;
  --cream: #FAFAFA;
  --ink: #16232A;
  --ink-soft: #52666D;
  --line: #DCEAEC;
  --white: #FFFFFF;

  /* Ampel-Status (Leitungs-Check) — bewusst eigenständige Farben, nicht die Markenfarben,
     damit Grün/Gelb/Rot eindeutig als Ampel gelesen werden */
  --status-green: #2F9E63;
  --status-green-bg: #EAF9EF;
  --status-yellow: #D89A1F;
  --status-yellow-bg: #FDF3E0;
  --status-red: #C1443D;
  --status-red-bg: #FBEAE9;

  /* Type */
  --font-display: 'Fraunces', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing scale */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;
  --space-7: 9rem;

  --radius: 4px;
  --max-width: 1180px;
}

*, *::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;
    scroll-behavior: auto !important;
  }
}

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

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

a {
  color: var(--teal-primary);
  text-decoration: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.12;
  color: var(--teal-deep);
  margin: 0 0 var(--space-2);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.4rem, 5.5vw, 4.2rem); font-weight: 500; }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.55rem); }

p { margin: 0 0 var(--space-2); color: var(--ink-soft); max-width: 62ch; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--copper);
  display: inline-block;
  margin-bottom: var(--space-1);
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 249, 245, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-3);
  max-width: var(--max-width);
  margin: 0 auto;
}

.brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--teal-deep);
  display: flex;
  align-items: center;
  gap: 0.4em;
}

.brand-logo {
  height: 78px;
  width: auto;
  display: block;
}
.brand-logo--footer { height: 84px; }

.brand em {
  font-style: italic;
  color: var(--teal-primary);
  font-weight: 500;
}

.nav-links {
  display: flex;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.95rem;
}

.nav-links a {
  color: var(--ink);
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--copper);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }

.nav-cta {
  background: var(--teal-primary);
  color: var(--white) !important;
  padding: 0.6em 1.3em;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9rem;
}
.nav-cta:hover { background: var(--teal-deep); }
.nav-cta::after { display: none; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--teal-deep);
  margin: 5px 0;
}

@media (max-width: 780px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--cream);
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--line);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .nav-links.open { max-height: 400px; }
  .nav-links li { border-top: 1px solid var(--line); }
  .nav-links a { display: block; padding: var(--space-2) var(--space-3); }
  .nav-cta { margin: var(--space-2) var(--space-3); display: block; text-align: center; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.85em 1.7em;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  font-family: var(--font-body);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}
.btn-primary {
  background: var(--copper);
  color: var(--white);
}
.btn-primary:hover { background: #9A5423; transform: translateY(-1px); }
.btn-secondary {
  background: transparent;
  border-color: var(--teal-deep);
  color: var(--teal-deep);
}
.btn-secondary:hover { background: var(--teal-deep); color: var(--white); }
.btn-light {
  background: var(--white);
  color: var(--teal-deep);
}
.btn-light:hover { background: var(--teal-light); }

/* ---------- Hero ---------- */
.hero {
  padding: var(--space-6) 0 var(--space-5);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-5);
  align-items: center;
}

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

.hero h1 em {
  font-style: italic;
  color: var(--teal-primary);
}

.hero-lead {
  font-size: 1.15rem;
  margin-bottom: var(--space-3);
}

.hero-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-3);
}

/* Ripple visual */
.ripple-visual {
  position: relative;
  aspect-ratio: 1;
  max-width: 420px;
  margin: 0 auto;
}
.ripple-visual .ring {
  position: absolute;
  inset: 0;
  border: 1.5px solid var(--teal-primary);
  border-radius: 50%;
  opacity: 0.35;
}
.ripple-visual .ring:nth-child(1) { inset: 0; animation: pulse 4s ease-in-out infinite; }
.ripple-visual .ring:nth-child(2) { inset: 12%; animation: pulse 4s ease-in-out infinite 0.6s; border-color: var(--green-accent); }
.ripple-visual .ring:nth-child(3) { inset: 24%; animation: pulse 4s ease-in-out infinite 1.2s; }
.ripple-visual .ring:nth-child(4) { inset: 36%; border-style: dashed; opacity: 0.5; border-color: var(--copper); }
.ripple-visual .core {
  position: absolute;
  inset: 42%;
  background: var(--teal-deep);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-align: center;
  letter-spacing: 0.05em;
  padding: var(--space-1);
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.35; }
  50% { transform: scale(1.04); opacity: 0.6; }
}
@media (prefers-reduced-motion: reduce) {
  .ripple-visual .ring { animation: none !important; }
}

/* ---------- Flow line signature ---------- */
.flowline {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: var(--space-5) 0;
  padding: 0 var(--space-2);
}
.flowline::before {
  content: '';
  position: absolute;
  left: 0; right: 0; top: 50%;
  height: 2px;
  background: repeating-linear-gradient(to right, var(--teal-primary) 0, var(--teal-primary) 6px, transparent 6px, transparent 12px);
  transform: translateY(-50%);
  z-index: 0;
}
.flow-node {
  position: relative;
  z-index: 1;
  background: var(--cream);
  text-align: center;
  padding: 0 var(--space-1);
  flex: 1;
}
.flow-node .dot {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--teal-primary);
  margin: 0 auto var(--space-1);
}
.flow-node.is-copper .dot { border-color: var(--copper); background: var(--copper-light); }
.flow-node .label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.flow-node .name {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1rem;
  color: var(--teal-deep);
}
@media (max-width: 700px) {
  .flowline { flex-direction: column; gap: var(--space-4); }
  .flowline::before { left: 50%; top: 0; bottom: 0; width: 2px; height: 100%; background: repeating-linear-gradient(to bottom, var(--teal-primary) 0, var(--teal-primary) 6px, transparent 6px, transparent 12px); }
}

/* ---------- Sections ---------- */
section { padding: var(--space-6) 0; }
.section-light { background: var(--white); }
.section-tint { background: var(--teal-light); }
.section-deep {
  background: var(--teal-deep);
  color: var(--white);
}
.section-deep h2, .section-deep h3 { color: var(--white); }
.section-deep p { color: #C9DEDA; }
.section-deep .eyebrow { color: var(--teal-primary); }

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-4);
}

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}
@media (max-width: 900px) {
  .card-grid { grid-template-columns: 1fr; }
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.card:hover {
  border-color: var(--teal-primary);
  transform: translateY(-3px);
}
.card .eyebrow { margin-bottom: var(--space-1); }
.card h3 { margin-bottom: var(--space-1); }
.card p { font-size: 0.95rem; margin-bottom: var(--space-2); }
.card .card-link {
  margin-top: auto;
  font-weight: 600;
  font-size: 0.9rem;
  font-family: var(--font-mono);
  color: var(--teal-primary);
}
.card .card-link::after { content: ' →'; }

/* ---------- Two-col feature ---------- */
.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  align-items: center;
}
.feature.reverse .feature-media { order: 2; }
@media (max-width: 900px) {
  .feature { grid-template-columns: 1fr; }
  .feature.reverse .feature-media { order: 0; }
}
.feature-media {
  background: var(--teal-light);
  border-radius: var(--radius);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3);
}
.feature-media--photo { padding: 0; overflow: hidden; }
.feature-media--photo img { width: 100%; height: 100%; object-fit: contain; display: block; }

.photo-panel {
  border-radius: var(--radius);
  overflow: hidden;
  margin: var(--space-4) 0;
  background: var(--teal-light);
}
.photo-panel img { width: 100%; height: auto; display: block; max-height: 480px; object-fit: contain; }
.photo-panel figcaption { padding: var(--space-2) 0 0; font-size: 0.85rem; color: var(--ink-soft); }

/* ---------- Spec table ---------- */
.spec-list {
  list-style: none;
  margin: var(--space-3) 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.spec-list li {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}
.spec-list .k { color: var(--ink-soft); }
.spec-list .v { font-family: var(--font-mono); font-weight: 500; color: var(--teal-deep); text-align: right; }

/* ---------- Stat strip ---------- */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-4);
}
@media (max-width: 700px) { .stat-strip { grid-template-columns: 1fr; } }
.stat {
  border-left: 2px solid var(--teal-primary);
  padding-left: var(--space-2);
}
.stat .num {
  font-family: var(--font-display);
  font-size: 2.1rem;
  color: var(--white);
  font-weight: 500;
}
.stat .cap { font-size: 0.88rem; color: var(--ink-soft); }

/* ---------- Quiz CTA banner ---------- */
.quiz-banner {
  background: var(--white);
  border: 1.5px dashed var(--copper);
  border-radius: var(--radius);
  padding: var(--space-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.quiz-banner h3 { margin-bottom: 4px; }
.quiz-banner p { margin-bottom: 0; font-size: 0.95rem; }

/* ---------- Newsletter ---------- */
.newsletter-box {
  background: var(--white);
  border-radius: var(--radius);
  padding: var(--space-4);
  max-width: 560px;
}
.newsletter-placeholder {
  border: 1.5px dashed var(--teal-primary);
  border-radius: var(--radius);
  padding: var(--space-3);
  background: var(--teal-light);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--teal-deep);
  line-height: 1.7;
}
.newsletter-placeholder strong { color: var(--copper); }

.form-embed {
  margin-top: var(--space-3);
  border-radius: var(--radius);
  overflow: hidden;
}
.form-embed iframe {
  display: block;
  width: 100%;
}

.fallback-form {
  display: flex;
  gap: var(--space-1);
  margin-top: var(--space-2);
  flex-wrap: wrap;
}
.fallback-form input[type="email"] {
  flex: 1;
  min-width: 200px;
  padding: 0.75em 1em;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
}

/* ---------- Bewertungen ---------- */
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}
@media (max-width: 900px) { .review-grid { grid-template-columns: 1fr; } }

.review-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.review-stars {
  color: var(--teal-primary);
  font-size: 1rem;
  letter-spacing: 2px;
}
.review-text {
  font-size: 0.95rem;
  color: var(--ink);
  font-style: italic;
  margin-bottom: 0;
}
.review-author {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
}
.review-cta {
  margin-top: var(--space-4);
  text-align: center;
}

/* ---------- Blog ---------- */
.post-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}
@media (max-width: 800px) { .post-grid { grid-template-columns: 1fr; } }
.post-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.post-thumb {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--teal-light), var(--teal-primary));
}
.post-body { padding: var(--space-3); display: flex; flex-direction: column; flex: 1; }
.post-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--copper);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-1);
}
.post-card h3 { font-size: 1.15rem; }
.post-card .card-link { margin-top: auto; padding-top: var(--space-1); font-family: var(--font-mono); font-size: 0.85rem; font-weight: 600; color: var(--teal-primary); }
.post-card .card-link::after { content: ' →'; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--teal-deep);
  color: #A9C7C2;
  padding: var(--space-5) 0 var(--space-3);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr; gap: var(--space-3); } }
.site-footer h4 {
  color: var(--white);
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}
.site-footer .brand { color: var(--white); margin-bottom: var(--space-1); }
.site-footer p { color: #A9C7C2; font-size: 0.9rem; }
.footer-links { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.6em; }
.footer-links a { color: #A9C7C2; font-size: 0.9rem; }
.footer-links a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: var(--space-2);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-1);
  font-size: 0.82rem;
  color: #7FA39D;
}
.footer-bottom a { color: #7FA39D; }
.footer-bottom a:hover { color: var(--white); }

/* ---------- Page hero (subpages) ---------- */
.page-hero {
  padding: var(--space-5) 0 var(--space-4);
  border-bottom: 1px solid var(--line);
}
.page-hero .eyebrow { margin-bottom: var(--space-2); }

/* ---------- Breadcrumb ---------- */
.crumb {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-bottom: var(--space-2);
}
.crumb a { color: var(--ink-soft); }
.crumb a:hover { color: var(--teal-primary); }

/* ---------- Leitungs-Check Quiz ---------- */
.quiz-progress-track {
  height: 6px;
  background: var(--line);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: var(--space-5);
  max-width: 480px;
}
.quiz-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--teal-primary);
  transition: width 0.2s ease;
}

.quiz-question {
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 100px;
}
.quiz-question:last-of-type { border-bottom: none; }
.quiz-question .q-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--teal-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-bottom: var(--space-1);
}
.quiz-question h3 { margin-bottom: var(--space-2); }

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 0.6em;
  list-style: none;
  margin: 0;
  padding: 0;
}
.quiz-option {
  display: flex;
  align-items: flex-start;
  gap: 0.7em;
  padding: var(--space-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
  font-size: 0.95rem;
}
.quiz-option:hover { border-color: var(--teal-primary); background: var(--teal-light); }
.quiz-option input {
  margin-top: 3px;
  accent-color: var(--teal-primary);
  flex-shrink: 0;
}
.quiz-option:has(input:checked) {
  border-color: var(--teal-primary);
  background: var(--teal-light);
}

.quiz-error {
  display: none;
  color: var(--status-red);
  font-size: 0.9rem;
  margin-top: var(--space-2);
}
.quiz-error.is-visible { display: block; }

.quiz-result {
  display: none;
  padding: var(--space-4);
  border-radius: var(--radius);
  margin-top: var(--space-5);
  border: 2px solid transparent;
  scroll-margin-top: 100px;
}
.quiz-result.is-visible { display: block; }
.quiz-result--green { background: var(--status-green-bg); border-color: var(--status-green); }
.quiz-result--yellow { background: var(--status-yellow-bg); border-color: var(--status-yellow); }
.quiz-result--red { background: var(--status-red-bg); border-color: var(--status-red); }

.status-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.35em 0.9em;
  border-radius: 999px;
  color: var(--white);
  margin-bottom: var(--space-2);
  font-weight: 600;
}
.quiz-result--green .status-badge { background: var(--status-green); }
.quiz-result--yellow .status-badge { background: var(--status-yellow); color: var(--ink); }
.quiz-result--red .status-badge { background: var(--status-red); }

.quiz-result h2 { margin-bottom: var(--space-2); }
.quiz-result .quiz-result-note { font-size: 0.92rem; }
.quiz-result .hero-actions { margin-top: var(--space-3); }