/* ==========================================================================
   WetTron Landingpage
   Layout: Fixe blaue Kopf- und Fußleiste, scrollender Mittelbereich
   Farbsystem: RAL 2011 Tieforange / RAL 5010 Enzianblau (Markenidentität)
   ========================================================================== */

:root {
  --brand-orange:      #e26e0e;
  --brand-orange-soft: #ef8326;
  --brand-blue:        #004f7c;
  --brand-blue-deep:   #013c5e;
  --brand-blue-ink:    #002438;

  --paper:        #f6f4ef;
  --paper-soft:   #ede8de;
  --ink:          #14222d;
  --ink-muted:    #4f5b66;
  --line:         rgba(0, 79, 124, 0.18);
  --line-strong:  rgba(0, 79, 124, 0.32);

  --shadow:       0 18px 44px rgba(0, 38, 61, 0.18);

  /* Höhen der fixen Bänder */
  --header-height: 92px;
  --footer-height: 64px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--paper);
}

body {
  color: var(--ink);
  font-family: "Bahnschrift", "Aptos", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

img { display: block; max-width: 100%; }
a { color: var(--brand-orange); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4, p, ul, figure { margin: 0; padding: 0; }
ul { list-style: none; }

/* ==========================================================================
   App-Layout: 3 Zeilen (Header fix, Scroll-Mittelbereich, Footer fix)
   ========================================================================== */

.app {
  display: grid;
  grid-template-rows: auto 1fr auto;
  height: 100vh;
  height: 100dvh; /* dynamische Viewport-Höhe für Mobile-Browser */
  overflow: hidden;
}

/* ----- Fixes Kopfband ----- */

.site-header {
  position: relative;
  background:
    radial-gradient(circle at 88% -20%, rgba(226, 110, 14, 0.16), transparent 55%),
    linear-gradient(180deg, var(--brand-blue-deep) 0%, var(--brand-blue) 100%);
  color: #fff;
  z-index: 10;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg,
    var(--brand-orange) 0%,
    var(--brand-orange) 38%,
    rgba(226, 110, 14, 0.0) 100%);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 56px;
  height: 56px;
}

.brand-name {
  font-size: 1.85rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--brand-orange);
  line-height: 1;
}

.brand-sub {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.86);
  margin-top: 4px;
}

.main-nav {
  display: flex;
  gap: 22px;
}

.main-nav a {
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}

.main-nav a:hover {
  color: #fff;
  border-bottom-color: var(--brand-orange);
  text-decoration: none;
}

/* ----- Scrollender Mittelbereich ----- */

.scroll-area {
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--paper);
  scroll-behavior: smooth;
}

.scroll-area::-webkit-scrollbar {
  width: 10px;
}
.scroll-area::-webkit-scrollbar-track {
  background: rgba(0, 79, 124, 0.06);
}
.scroll-area::-webkit-scrollbar-thumb {
  background: rgba(0, 79, 124, 0.35);
  border-radius: 5px;
}
.scroll-area::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 79, 124, 0.55);
}

/* ----- Fixes Fußband ----- */

.site-footer {
  position: relative;
  background: linear-gradient(180deg,
    var(--brand-blue) 0%,
    var(--brand-blue-deep) 15%,
    var(--brand-blue-deep) 100%);
  color: #fff;
  z-index: 10;
  box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.18);
}

.site-footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg,
    rgba(226, 110, 14, 0.0) 0%,
    var(--brand-orange) 62%,
    var(--brand-orange) 100%);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.footer-claim {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.footer-label {
  color: var(--brand-orange);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.footer-claim strong {
  font-family: "Bahnschrift SemiCondensed", "Arial Narrow", "Segoe UI", sans-serif;
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
}

.footer-meta {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.06em;
}

.footer-meta a {
  color: rgba(255, 255, 255, 0.85);
  margin-left: 14px;
}

/* ==========================================================================
   Inhalts-Sektionen im Scroll-Bereich
   ========================================================================== */

.section {
  width: 100%;
  padding: 56px 32px;
}

.section-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.section-alt {
  background: linear-gradient(180deg, #ffffff 0%, #f0ece2 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.kicker {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--brand-orange);
  margin-bottom: 12px;
}

.section h2 {
  font-family: "Bahnschrift SemiCondensed", "Arial Narrow", "Segoe UI", sans-serif;
  font-size: 2.1rem;
  line-height: 1.1;
  color: var(--brand-blue-ink);
  font-weight: 700;
  margin-bottom: 18px;
}

.section h3 {
  font-family: "Bahnschrift SemiCondensed", "Arial Narrow", "Segoe UI", sans-serif;
  font-size: 1.3rem;
  line-height: 1.15;
  color: var(--brand-blue-ink);
  font-weight: 700;
  margin-bottom: 10px;
}

.section p { font-size: 1rem; color: var(--ink); }
.section p + p { margin-top: 12px; }

/* ---------- HERO ---------- */

.hero {
  background:
    radial-gradient(circle at 88% -10%, rgba(226, 110, 14, 0.16), transparent 55%),
    linear-gradient(180deg, var(--brand-blue-deep) 0%, var(--brand-blue) 100%);
  color: #fff;
  padding-top: 64px;
  padding-bottom: 64px;
}

.hero-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.95fr 1fr;
  gap: 32px;
  align-items: center;
}

.hero .kicker { color: var(--brand-orange-soft); margin-bottom: 14px; }

.hero h1 {
  max-width: 14ch;
  font-family: "Bahnschrift SemiCondensed", "Arial Narrow", "Segoe UI", sans-serif;
  font-size: 3rem;
  line-height: 1.02;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: #fff;
}

.hero .lead {
  max-width: 52ch;
  margin-top: 16px;
  color: rgba(255, 255, 255, 0.94);
  line-height: 1.5;
  font-size: 1.05rem;
}

.brand-inline { color: var(--brand-orange); font-weight: 700; }

.claim-box {
  margin-top: 22px;
  max-width: 48ch;
  padding: 14px 20px;
  background: rgba(255, 255, 255, 0.10);
  border-left: 4px solid var(--brand-orange);
  border-radius: 0 6px 6px 0;
}

.claim-box strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1.15rem;
  color: #fff;
}

.claim-box p {
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.45;
  font-size: 0.96rem;
}

.hero-cta {
  margin-top: 26px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.85rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s, background 0.2s, border-color 0.2s, color 0.2s;
}

.btn-primary {
  background: var(--brand-orange);
  color: #fff;
}
.btn-primary:hover {
  background: #f0822a;
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}
.btn-ghost:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.08);
  text-decoration: none;
}

.hero-visual img {
  width: 100%;
  max-height: 480px;
  object-fit: contain;
  filter: drop-shadow(0 14px 22px rgba(0, 0, 0, 0.40));
}

/* ---------- Impact-Strip ---------- */

.impact-section {
  background: var(--brand-blue);
  color: #fff;
  padding: 36px 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.impact-strip {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.impact-strip > div {
  padding: 8px 28px;
  border-left: 1px solid rgba(255, 255, 255, 0.22);
}

.impact-strip > div:first-child {
  border-left: none;
  padding-left: 0;
}

.impact-number {
  display: block;
  margin-bottom: 6px;
  font-family: "Bahnschrift SemiCondensed", "Arial Narrow", "Segoe UI", sans-serif;
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--brand-orange-soft);
  line-height: 1;
}

.impact-strip p {
  color: rgba(255, 255, 255, 0.92);
  line-height: 1.4;
  font-size: 0.95rem;
}

.impact-source {
  display: inline-block;
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  font-style: italic;
}

/* ---------- Benefits / Checklist ---------- */

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: start;
}

.checklist,
.bullet-list {
  margin-top: 14px;
}

.checklist li,
.bullet-list li {
  position: relative;
  padding-left: 22px;
  line-height: 1.5;
  color: var(--ink);
}

.checklist li + li,
.bullet-list li + li {
  margin-top: 10px;
}

.checklist li::before,
.bullet-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--brand-orange);
  box-shadow: 0 0 0 3px rgba(226, 110, 14, 0.14);
}

.media-frame {
  background: linear-gradient(180deg, #f8fafc, #eaf0f5);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
}

.media-frame img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.media-label {
  display: inline-block;
  margin-top: 10px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand-blue);
  background: rgba(0, 79, 124, 0.10);
  border: 1px solid rgba(0, 79, 124, 0.16);
}

/* ---------- Technische Daten Tabelle ---------- */

.tech-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
}

.tech-table th,
.tech-table td {
  padding: 10px 0;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
  line-height: 1.4;
}

.tech-table th {
  width: 40%;
  color: var(--brand-blue-ink);
  font-weight: 700;
  padding-right: 14px;
}

.tech-table td {
  color: var(--ink);
}

.tech-table tr:last-child th,
.tech-table tr:last-child td {
  border-bottom: none;
}

/* ---------- Evidence / Studien-Karten ---------- */

.evidence-card {
  background: linear-gradient(180deg, rgba(226, 110, 14, 0.06), #fff);
  border: 1px solid rgba(226, 110, 14, 0.32);
  border-radius: 14px;
  padding: 24px 28px;
}

.evidence-card strong { color: var(--brand-orange); font-weight: 700; }

.study-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.study-gallery img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--line);
  padding: 4px;
}

/* ---------- Anwendungsbereiche Cards ---------- */

.use-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 24px;
}

.use-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.use-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0, 38, 61, 0.10);
  border-color: var(--line-strong);
}

.use-card h3 {
  margin-bottom: 8px;
  font-size: 1.15rem;
}

.use-card p {
  font-size: 0.92rem;
  color: var(--ink-muted);
  line-height: 1.45;
}

.use-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(226, 110, 14, 0.12);
  color: var(--brand-orange);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  font-size: 1.3rem;
  font-weight: 700;
}

/* ---------- Kontakt-Sektion ---------- */

.contact-section {
  background: linear-gradient(180deg, var(--brand-blue) 0%, var(--brand-blue-deep) 100%);
  color: #fff;
  padding: 56px 32px;
}

.contact-section h2 { color: #fff; }
.contact-section .kicker { color: var(--brand-orange-soft); }

.contact-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: start;
}

.contact-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 14px;
  padding: 24px 28px;
}

.contact-card dt {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
  margin-top: 14px;
}

.contact-card dt:first-of-type { margin-top: 0; }

.contact-card dd {
  margin: 4px 0 0;
  font-size: 1.05rem;
  color: #fff;
}

.contact-card dd a { color: #fff; border-bottom: 1px dashed rgba(255,255,255,0.4); }
.contact-card dd a:hover { border-bottom-color: var(--brand-orange); text-decoration: none; }

.contact-section .lead {
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.05rem;
  line-height: 1.55;
  margin-bottom: 14px;
}

/* ---------- Impressum ---------- */

.impressum-block h3 {
  margin-top: 26px;
  font-size: 1.05rem;
  color: var(--brand-blue-ink);
}

.impressum-block h3:first-child { margin-top: 0; }

.impressum-block p {
  margin-top: 6px;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--ink);
}

.impressum-block a { color: var(--brand-blue); }
.impressum-block a:hover { color: var(--brand-orange); }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 900px) {
  .header-inner { padding: 12px 18px; gap: 14px; }
  .footer-inner { padding: 12px 18px; flex-wrap: wrap; }
  .main-nav { display: none; }

  .section { padding: 40px 18px; }
  .impact-section { padding: 28px 18px; }
  .contact-section { padding: 40px 18px; }

  .hero-grid,
  .two-col,
  .use-grid,
  .contact-grid,
  .study-gallery,
  .impact-strip {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .impact-strip > div {
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.22);
    padding: 18px 0 0;
  }
  .impact-strip > div:first-child {
    border-top: none;
    padding-top: 0;
  }

  .hero h1 { font-size: 2.2rem; max-width: none; }
  .section h2 { font-size: 1.7rem; }

  .brand-sub { display: none; }
  .brand-name { font-size: 1.5rem; }
  .brand-mark { width: 44px; height: 44px; }
}