/* ====================================================
   NIEREN ELEKTRIFIZIEREN® — Patentiert seit 1913
   Aesthetic: Schweizer Patentzeichnung / Blueprint-Aktenordner
   ==================================================== */

:root {
  --blue-950: #071d33;
  --blue-900: #0c2c4d;
  --blue-700: #17436f;
  --blue-500: #2f6fb0;
  --cyan-glow: #6fe0ff;
  --paper: #f3ecd9;
  --paper-line: #cabb95;
  --red-stamp: #b23a2f;
  --brass: #c9a227;
  --ink: #0c2135;

  --font-display: "Piazzolla", "Iowan Old Style", serif;
  --font-mono: "Courier Prime", "Courier New", monospace;
  --font-body: "Karla", "Segoe UI", sans-serif;

  --radius: 4px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

a { color: inherit; }

h1, h2, h3 {
  font-family: var(--font-display);
  margin: 0;
  line-height: 1.05;
}

sup { font-size: 0.5em; }

svg { display: block; }

/* ---------- blueprint texture ---------- */
.blueprint-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.05;
  background-image:
    linear-gradient(var(--blue-900) 1px, transparent 1px),
    linear-gradient(90deg, var(--blue-900) 1px, transparent 1px);
  background-size: 42px 42px;
}

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(243, 236, 217, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 3px double var(--blue-950);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--ink);
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.02em;
  font-size: 1rem;
}

.logo-mark {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--blue-950);
  color: var(--cyan-glow);
  font-size: 1rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.main-nav a {
  text-decoration: none;
  color: var(--blue-900);
  position: relative;
  padding: 4px 0;
}

.main-nav a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--brass);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.main-nav a:not(.nav-cta):hover::after { transform: scaleX(1); }

.nav-cta {
  background: var(--blue-950);
  color: var(--paper) !important;
  padding: 8px 16px;
  border-radius: 999px;
}

.nav-toggle-input, .nav-toggle-btn { display: none; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  text-decoration: none;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  border: 2px solid var(--blue-950);
}

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

.btn-primary {
  background: var(--brass);
  color: var(--blue-950);
  box-shadow: 0 8px 0 0 var(--red-stamp);
  border-color: var(--red-stamp);
}
.btn-primary:hover { box-shadow: 0 10px 0 0 var(--red-stamp); }
.btn-primary:active { transform: translateY(2px); box-shadow: 0 4px 0 0 var(--red-stamp); }

.btn-ghost {
  background: transparent;
  color: var(--blue-950);
}
.btn-ghost:hover { background: var(--blue-950); color: var(--paper); }

.btn-large { padding: 18px 32px; font-size: 1rem; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding: 100px 0 70px;
  overflow: hidden;
  z-index: 1;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.stamp {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--red-stamp);
  border: 3px solid var(--red-stamp);
  border-radius: 999px;
  padding: 8px 18px;
  transform: rotate(-4deg);
  margin-bottom: 30px;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.8rem);
  font-weight: 900;
  color: var(--blue-950);
  margin-bottom: 24px;
}

.spark-text {
  color: var(--blue-500);
  font-style: italic;
  font-weight: 600;
  position: relative;
}

.hero-sub {
  font-size: 1.1rem;
  line-height: 1.65;
  color: var(--blue-900);
  max-width: 560px;
  margin-bottom: 36px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-bolt {
  position: absolute;
  top: 40px;
  right: 60px;
  width: 140px;
  height: 240px;
  color: var(--brass);
  opacity: 0.5;
  z-index: 1;
}

/* ---------- ticker ---------- */
.ticker {
  position: relative;
  z-index: 1;
  background: var(--blue-950);
  color: var(--paper);
  overflow: hidden;
  border-top: 3px double var(--brass);
  border-bottom: 3px double var(--brass);
}

.ticker-track {
  display: flex;
  width: max-content;
  animation: scroll-left 34s linear infinite;
}

.ticker-track span {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  white-space: nowrap;
  padding: 12px 0;
}

@keyframes scroll-left {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- urkunde / quote ---------- */
.urkunde { position: relative; z-index: 1; padding: 88px 0; }

.doc-frame {
  position: relative;
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--paper-line);
  box-shadow: 0 2px 0 var(--paper-line), 0 4px 0 var(--paper-line), 0 20px 40px -20px rgba(12, 33, 53, 0.35);
  padding: 56px 44px;
  max-width: 740px;
  margin: 0 auto;
  text-align: center;
}

.doc-eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--red-stamp);
  margin-bottom: 22px;
}

.doc-quote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  line-height: 1.45;
  margin: 0 0 16px;
  color: var(--blue-950);
}

.doc-sub {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--blue-700);
  opacity: 0.75;
  margin: 0;
}

/* ---------- section titles ---------- */
.section-title {
  font-size: clamp(1.9rem, 4vw, 2.5rem);
  color: var(--blue-950);
  text-align: center;
}

.section-lead {
  text-align: center;
  max-width: 520px;
  margin: 14px auto 56px;
  color: var(--blue-900);
  opacity: 0.8;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

/* ---------- schema ---------- */
.schema { position: relative; z-index: 1; padding: 40px 0 100px; }

.schema-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.schema-fig {
  margin: 0;
  background: var(--blue-950);
  border: 1px solid var(--brass);
  padding: 20px;
}

.schema-fig svg {
  width: 100%;
  height: auto;
  color: var(--cyan-glow);
}

.schema-fig figcaption {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--paper);
  opacity: 0.75;
  text-align: center;
  margin-top: 12px;
}

/* ---------- verfahren cards ---------- */
.verfahren { position: relative; z-index: 1; padding: 40px 0 100px; }

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

.card {
  position: relative;
  background: #fff;
  border: 1px solid var(--paper-line);
  border-left: 4px solid var(--blue-500);
  padding: 28px 24px 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-6px);
  border-left-color: var(--red-stamp);
  box-shadow: 0 20px 40px -22px rgba(12, 33, 53, 0.35);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: var(--blue-950);
}

.card p {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--blue-900);
  margin: 0;
}

/* ---------- warum / reveal ---------- */
.warum {
  position: relative;
  z-index: 1;
  background: var(--blue-950);
  color: var(--paper);
  padding: 110px 0;
  text-align: center;
  overflow: hidden;
}

.warum::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 600px 400px at 50% 0%, rgba(111, 224, 255, 0.2), transparent);
}

.warum-inner { position: relative; z-index: 1; }

.warum-line {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--paper);
  opacity: 0.7;
  margin: 20px 0 6px;
}

.warum-symptom {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  margin: 4px 0;
  color: var(--paper);
}

.warum-symptom-final { color: var(--brass); }

.warum-brand {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.4rem, 8vw, 5rem);
  color: var(--cyan-glow);
  margin: 24px 0 4px;
  text-shadow: 0 0 40px rgba(111, 224, 255, 0.55);
}

/* ---------- zahlen ---------- */
.zahlen { position: relative; z-index: 1; padding: 100px 0; background: #fff; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat {
  background: var(--paper);
  padding: 32px 20px;
  text-align: center;
  border: 1px solid var(--paper-line);
}

.stat-num {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2rem;
  color: var(--blue-700);
  margin-bottom: 10px;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1.4;
  color: var(--blue-900);
}

/* ---------- testimonials ---------- */
.stimmen { position: relative; z-index: 1; padding: 100px 0; }

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

.quote-grid blockquote {
  margin: 0;
  background: #fff;
  border: 1px solid var(--paper-line);
  border-top: 3px solid var(--brass);
  padding: 26px 24px;
}

.quote-grid p {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.05rem;
  line-height: 1.5;
  margin: 0 0 14px;
  color: var(--blue-950);
}

.quote-grid cite {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--blue-900);
  opacity: 0.7;
  font-style: normal;
}

/* ---------- team ---------- */
.team { position: relative; z-index: 1; padding: 40px 0 60px; background: #fff; }

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.team-card {
  background: var(--paper);
  padding: 30px 24px;
  text-align: center;
  border: 1px solid var(--paper-line);
}

.team-avatar {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--blue-950);
  display: grid;
  place-items: center;
  font-size: 1.7rem;
}

.team-card h3 { font-size: 1.1rem; margin-bottom: 4px; }

.team-role {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--blue-500);
  margin: 0 0 14px;
}

.team-card p:last-child {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--blue-900);
}

.team-footnote {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--blue-900);
  opacity: 0.75;
}

/* ---------- kontakt ---------- */
.kontakt {
  position: relative;
  z-index: 1;
  padding: 110px 0;
  text-align: center;
  background: var(--blue-950);
  color: var(--paper);
}

.kontakt h2 {
  font-size: clamp(2rem, 5vw, 2.8rem);
  margin-bottom: 16px;
}

.kontakt p {
  color: var(--paper);
  opacity: 0.75;
  margin-bottom: 36px;
  font-size: 1.05rem;
}

/* ---------- footer ---------- */
.site-footer {
  position: relative;
  z-index: 1;
  background: var(--blue-950);
  color: var(--paper);
  padding: 48px 0 32px;
  border-top: 3px double var(--brass);
}

.footer-inner { text-align: center; }

.footer-brand {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--paper);
  margin-bottom: 18px;
}

.footer-brand .logo-mark {
  background: var(--cyan-glow);
  color: var(--blue-950);
}

.footer-disclaimer {
  max-width: 560px;
  margin: 0 auto 18px;
  font-size: 0.8rem;
  line-height: 1.6;
  opacity: 0.75;
}

.footer-disclaimer a {
  color: var(--cyan-glow);
  text-decoration: underline;
}

.footer-jingle {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--brass);
  margin: 0 0 14px;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  opacity: 0.5;
  margin: 0;
}

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .quote-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .schema-grid { grid-template-columns: 1fr; }
  .hero-bolt { opacity: 0.25; }
}

@media (max-width: 680px) {
  .main-nav {
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: var(--paper);
    border-bottom: 3px double var(--blue-950);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 20px;
    transform: translateY(-130%);
    transition: transform 0.25s ease;
  }
  .main-nav a { padding: 12px 0; width: 100%; }
  .nav-cta { margin-top: 8px; text-align: center; }

  .nav-toggle-input:checked ~ .main-nav { transform: translateY(0); }

  .nav-toggle-btn {
    display: flex;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
  }
  .nav-toggle-btn span {
    width: 22px; height: 2px;
    background: var(--blue-950);
  }

  .card-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr; }
}