/* ============================================================
   BRAND "PETROL & CORAL"
   Brand: umweltbericht24
   Farben:  Papierweiß #F7F6F1 · Petrol #0E3A3D · Koralle #E85A33
            Sand #EDE8DC (Akzentflächen)
   Typo:    Bricolage Grotesque (Display) + Instrument Sans (Text)
   Stil:    Bold & freundlich, große runde Formen, Pill-Buttons,
            dunkle Petrol-Sektionen mit Koralle-Akzenten
   ============================================================ */

:root {
  --bg: #F7F6F1;
  --bg-alt: #EDE8DC;
  --ink: #122B2D;
  --ink-soft: #48605F;
  --petrol: #0E3A3D;
  --petrol-2: #16494D;
  --coral: #E85A33;
  --coral-soft: #F8DDD2;
  --mint: #D6E5DC;
  --danger: #C93A2A;
  --warn: #D9971C;
  --ok: #3E8C55;
  --radius: 24px;
  --radius-sm: 14px;
  --font-display: "Bricolage Grotesque", sans-serif;
  --font-body: "Instrument Sans", "Helvetica Neue", sans-serif;
  --container: 1200px;
}

/* ---------- Reset & Basis ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--petrol); text-decoration-color: var(--coral); text-decoration-thickness: 2px; }
a:hover { color: var(--coral); }
button { font-family: inherit; cursor: pointer; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section-padding { padding: 110px 0; }

/* ---------- Typografie ---------- */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 800; line-height: 1.08; letter-spacing: -0.02em; }
.section-kicker {
  display: inline-block; background: var(--coral-soft); color: var(--coral);
  font-weight: 700; font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase;
  padding: 7px 16px; border-radius: 999px; margin-bottom: 20px;
}
.section-title { font-size: clamp(2.2rem, 5vw, 3.6rem); margin-bottom: 18px; }
.section-subtitle { font-size: 1.15rem; color: var(--ink-soft); max-width: 640px; margin-bottom: 56px; }

/* Dunkle Sektionen */
.dark-section { background: var(--petrol); color: #EFF4EE; }
.dark-section .section-subtitle { color: #A9C2BC; }
.dark-section .section-kicker { background: rgba(232, 90, 51, 0.18); }
.dark-section a { color: #EFF4EE; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 1rem;
  padding: 16px 32px; border-radius: 999px; text-decoration: none; border: 2px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.btn-primary { background: var(--coral); color: #fff; }
.btn-primary:hover { background: var(--petrol); color: #fff; transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--petrol); border-color: var(--petrol); }
.btn-outline:hover { background: var(--petrol); color: #fff; }
.dark-section .btn-outline { color: #EFF4EE; border-color: #EFF4EE; }
.dark-section .btn-outline:hover { background: var(--coral); border-color: var(--coral); }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 16px 0 auto 0; z-index: 100; pointer-events: none;
}
.site-header .container {
  pointer-events: auto;
  display: flex; align-items: center; justify-content: space-between; height: 64px;
  background: rgba(247, 246, 241, 0.92); backdrop-filter: blur(10px);
  border-radius: 999px; padding: 0 12px 0 26px; max-width: 1100px;
  box-shadow: 0 2px 20px rgba(18, 43, 45, 0.08);
  transition: box-shadow 0.2s ease;
}
.site-header.scrolled .container { box-shadow: 0 6px 30px rgba(18, 43, 45, 0.16); }
.logo {
  font-family: var(--font-display); font-weight: 800; font-size: 1.2rem;
  text-decoration: none; letter-spacing: -0.02em; color: var(--petrol); display: inline-flex; align-items: baseline;
}
.logo .logo-24 { color: var(--coral); }
.nav-links { list-style: none; display: flex; gap: 2px; align-items: center; }
.nav-links a { text-decoration: none; font-weight: 600; font-size: 0.95rem; padding: 9px 16px; border-radius: 999px; color: var(--ink); }
.nav-links a:hover { background: var(--mint); color: var(--petrol); }
.nav-cta { background: var(--petrol); color: #fff !important; }
.nav-cta:hover { background: var(--coral) !important; }
.hamburger { display: none; background: none; border: 2px solid var(--petrol); border-radius: 999px; padding: 10px 12px; flex-direction: column; gap: 5px; }
.hamburger span { width: 20px; height: 2px; background: var(--petrol); display: block; border-radius: 2px; }

/* ---------- Hero ---------- */
.hero { padding: 150px 0 0; }
.hero-card {
  background: var(--petrol); color: #EFF4EE; border-radius: calc(var(--radius) * 1.6);
  padding: clamp(40px, 6vw, 88px); position: relative; overflow: hidden;
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(232, 90, 51, 0.16); color: #FFB59B;
  padding: 8px 18px; border-radius: 999px;
  font-weight: 700; font-size: 0.85rem; letter-spacing: 0.06em; text-transform: uppercase;
  margin-bottom: 28px;
}
.pulse-dot { width: 9px; height: 9px; background: var(--coral); border-radius: 50%; animation: pulse 1.6s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }
.hero h1 { font-size: clamp(2.5rem, 5.5vw, 4.2rem); margin-bottom: 24px; color: #fff; }
.hero h1 .accent { color: var(--coral); }
.hero-subline { font-size: 1.15rem; color: #A9C2BC; max-width: 500px; margin-bottom: 36px; }
.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-media { border-radius: var(--radius); overflow: hidden; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 5; }

.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 20px; }
.hero-stat { background: var(--bg-alt); border-radius: var(--radius); padding: 30px 28px; }
.hero-stat-number { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.9rem, 3.5vw, 2.7rem); color: var(--petrol); }
.hero-stat-label { font-size: 0.92rem; color: var(--ink-soft); font-weight: 600; margin-top: 4px; }

/* ---------- CSRD-Karten ---------- */
.csrd-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.csrd-card { background: #fff; border-radius: var(--radius); padding: 40px 32px; transition: transform 0.18s ease, box-shadow 0.18s ease; }
.csrd-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(18, 43, 45, 0.10); }
.csrd-card .card-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 50%; background: var(--coral); color: #fff;
  font-family: var(--font-display); font-weight: 800; font-size: 1.05rem; margin-bottom: 24px;
}
.csrd-card h3 { font-size: 1.3rem; margin-bottom: 14px; }
.csrd-card p { color: var(--ink-soft); font-size: 0.98rem; }

/* ---------- Rechner ---------- */
.calculator-section { background: var(--bg-alt); border-radius: calc(var(--radius) * 1.6); margin: 0 24px; }
.calculator-box { max-width: 760px; margin: 0 auto; background: #fff; border-radius: var(--radius); padding: 52px; box-shadow: 0 20px 60px rgba(18, 43, 45, 0.08); }
.calc-progress { display: flex; gap: 10px; margin-bottom: 32px; }
.calc-progress .dot { width: 46px; height: 10px; background: var(--bg-alt); border-radius: 999px; transition: background 0.2s; }
.calc-progress .dot.active { background: var(--coral); }
.calc-progress .dot.completed { background: var(--petrol); }
.calc-step { display: none; }
.calc-step.active { display: block; }
.step-label { font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.14em; color: var(--coral); margin-bottom: 10px; }
.calc-step h3 { font-size: 1.5rem; margin-bottom: 28px; }
.radio-group { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; border-radius: var(--radius-sm); }
.radio-group.radio-error { outline: 3px solid var(--danger); outline-offset: 6px; }
.radio-group label { position: relative; display: block; }
.radio-group input { position: absolute; opacity: 0; }
.radio-group span {
  display: block; border: 2px solid var(--bg-alt); border-radius: var(--radius-sm);
  padding: 14px 18px; font-weight: 600; text-align: center;
  transition: border-color 0.15s, background 0.15s;
}
.radio-group input:checked + span { border-color: var(--coral); background: var(--coral-soft); }
.radio-group span:hover { border-color: var(--petrol); }
.calc-nav { display: flex; justify-content: space-between; align-items: center; margin-top: 36px; gap: 16px; }
.calc-result { display: none; text-align: center; }
.calc-result.show { display: block; }
.result-badge {
  display: inline-block; font-family: var(--font-display); font-weight: 800; font-size: 1.05rem;
  border-radius: 999px; padding: 12px 28px; margin-bottom: 24px;
}
.result-badge.red { background: var(--danger); color: #fff; }
.result-badge.yellow { background: var(--warn); color: #fff; }
.result-badge.green { background: var(--ok); color: #fff; }
.result-text { max-width: 560px; margin: 0 auto 28px; color: var(--ink-soft); }
.disclaimer { font-size: 0.8rem; color: var(--ink-soft); margin-top: 24px; }

/* ---------- Timeline ---------- */
.timeline-section { position: relative; }
.timeline-carousel { position: relative; display: flex; align-items: stretch; gap: 16px; }
.tl-track {
  display: flex; gap: 20px; overflow-x: auto; scroll-snap-type: x mandatory;
  padding: 8px 4px 20px; scrollbar-width: none; flex: 1;
}
.tl-track::-webkit-scrollbar { display: none; }
.tl-item {
  flex: 0 0 300px; scroll-snap-align: center;
  background: var(--petrol-2); border-radius: var(--radius); padding: 30px;
}
.tl-item.tl-current { background: var(--coral); }
.tl-item.tl-current .tl-content p { color: #FFE0D4; }
.tl-dot { font-family: var(--font-display); font-weight: 800; font-size: 2rem; color: #fff; margin-bottom: 12px; }
.tl-content h4 { font-size: 1.1rem; margin-bottom: 10px; color: #fff; }
.tl-content p { font-size: 0.92rem; color: #A9C2BC; }
.tl-nav {
  align-self: center; border: 2px solid rgba(239, 244, 238, 0.4); background: transparent; color: #EFF4EE;
  width: 52px; height: 52px; border-radius: 50%; font-size: 1.1rem; flex: 0 0 auto;
  transition: background 0.15s, border-color 0.15s;
}
.tl-nav:hover { background: var(--coral); border-color: var(--coral); }

/* ---------- Themen ---------- */
.topics-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.topic-card { background: #fff; border-radius: var(--radius); padding: 34px 30px; transition: transform 0.18s ease, box-shadow 0.18s ease; }
.topic-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(18, 43, 45, 0.10); }
.topic-card .topic-tag {
  display: inline-block; background: var(--mint); color: var(--petrol);
  font-weight: 700; font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 6px 12px; border-radius: 999px; margin-bottom: 20px;
}
.topic-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
.topic-card p { color: var(--ink-soft); font-size: 0.95rem; }

/* Zähler */
.counters { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 56px; }
.counter-item { background: var(--petrol); color: #fff; border-radius: var(--radius); padding: 42px 24px; text-align: center; }
.counter-item:nth-child(2) { background: var(--coral); }
.counter-number { font-family: var(--font-display); font-weight: 800; font-size: clamp(2.2rem, 5vw, 3.4rem); }
.counter-label { font-weight: 600; font-size: 0.9rem; margin-top: 6px; opacity: 0.85; }

/* ---------- News / Beiträge ---------- */
.news-filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 40px; }
.filter-chip {
  border: 2px solid var(--bg-alt); background: #fff; border-radius: 999px; padding: 9px 22px;
  font-weight: 700; font-size: 0.9rem; transition: all 0.15s;
}
.filter-chip:hover { border-color: var(--petrol); }
.filter-chip.active { background: var(--petrol); border-color: var(--petrol); color: #fff; }

.news-featured {
  display: grid; grid-template-columns: 1.1fr 0.9fr; background: var(--petrol); color: #EFF4EE;
  border-radius: var(--radius); overflow: hidden; margin-bottom: 28px;
}
.news-featured-media { display: block; min-height: 320px; }
.news-featured-img { width: 100%; height: 100%; object-fit: cover; }
.news-featured-body { padding: 48px 44px; display: flex; flex-direction: column; gap: 16px; align-items: flex-start; }
.news-featured-body h3 { font-size: clamp(1.5rem, 3vw, 2.1rem); color: #fff; }
.news-featured-body h3 a { text-decoration: none; color: #fff; }
.news-featured-body p { color: #A9C2BC; }
.news-featured .news-card-meta { color: #A9C2BC; }

.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card { background: #fff; border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: transform 0.18s ease, box-shadow 0.18s ease; }
.news-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(18, 43, 45, 0.10); }
.news-card-media { display: block; }
.news-card-img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.news-card-body { padding: 28px 26px 32px; display: flex; flex-direction: column; gap: 12px; align-items: flex-start; flex: 1; }
.news-card-body h3 { font-size: 1.15rem; }
.news-card-body h3 a { text-decoration: none; }
.news-card-body p { color: var(--ink-soft); font-size: 0.94rem; flex: 1; }
.news-card-meta { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; font-size: 0.82rem; color: var(--ink-soft); font-weight: 600; }
.news-tag { background: var(--coral-soft); color: var(--coral); font-weight: 700; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; padding: 4px 12px; border-radius: 999px; }
.news-tag-featured { background: var(--coral); color: #fff; }
.news-more { font-weight: 700; font-size: 0.9rem; text-decoration: none; color: var(--coral); }
.news-more:hover { color: var(--petrol); }
.news-load-wrap { text-align: center; margin-top: 44px; }
.news-img-placeholder {
  background: repeating-linear-gradient(45deg, var(--bg-alt), var(--bg-alt) 10px, #fff 10px, #fff 20px);
  display: flex; align-items: center; justify-content: center; min-height: 220px; height: 100%;
}
.news-img-placeholder span { font-family: monospace; font-size: 0.8rem; color: var(--ink-soft); padding: 8px; text-align: center; }
.news-error, .news-empty { color: var(--ink-soft); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item { background: #fff; border-radius: var(--radius-sm); overflow: hidden; }
.faq-question {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 20px;
  background: none; border: none; text-align: left; padding: 24px 28px;
  font-family: var(--font-body); font-weight: 700; font-size: 1.05rem; color: var(--ink);
}
.faq-question:hover { color: var(--coral); }
.faq-icon { transition: transform 0.25s ease; flex: 0 0 auto; color: var(--coral); font-weight: 900; }
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-answer { display: none; padding: 0 28px 28px; color: var(--ink-soft); }
.faq-item.active .faq-answer { display: block; }
.faq-item.active { box-shadow: 0 10px 30px rgba(18, 43, 45, 0.08); }

/* ---------- Kontakt ---------- */
.contact-section { border-radius: calc(var(--radius) * 1.6); margin: 0 24px 24px; }
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: start; }
.contact-text h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 20px; color: #fff; }
.contact-text p { color: #A9C2BC; margin-bottom: 16px; max-width: 460px; }
.contact-info { margin-top: 32px; display: flex; flex-direction: column; gap: 12px; font-weight: 600; }
.contact-placeholder {
  margin-top: 40px; border-radius: var(--radius); min-height: 200px;
  background: repeating-linear-gradient(45deg, var(--petrol-2), var(--petrol-2) 12px, var(--petrol) 12px, var(--petrol) 24px);
  display: flex; align-items: center; justify-content: center;
}
.contact-placeholder span { font-family: monospace; font-size: 0.8rem; color: #A9C2BC; }
.contact-form { background: #fff; color: var(--ink); border-radius: var(--radius); padding: 44px; display: flex; flex-direction: column; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group label { font-weight: 700; font-size: 0.92rem; }
.form-group input, .form-group textarea {
  border: 2px solid var(--bg-alt); border-radius: var(--radius-sm);
  background: #fff; padding: 13px 18px; font-family: inherit; font-size: 1rem;
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--coral); }
.error-msg { display: none; color: var(--danger); font-size: 0.82rem; font-weight: 600; }
.form-group.has-error .error-msg { display: block; }
.form-group.has-error input, .form-group.has-error textarea { border-color: var(--danger); }
.btn-submit {
  border: none; background: var(--coral); color: #fff; border-radius: 999px;
  font-weight: 700; font-size: 1rem; padding: 17px; transition: background 0.15s;
}
.btn-submit:hover { background: var(--petrol); }
.btn-submit:disabled { opacity: 0.7; cursor: default; }

/* Honeypot-Feld: unsichtbar für Menschen, sichtbar für Bots */
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* Status-Meldung unter dem Absenden-Button */
.form-status { font-weight: 600; font-size: 0.92rem; min-height: 1.2em; }
.form-status.ok { color: var(--ok); }
.form-status.err { color: var(--danger); }

/* ---------- Footer ---------- */
.site-footer { padding: 80px 0 40px; color: var(--ink-soft); }
.site-footer a { color: var(--ink-soft); text-decoration: none; }
.site-footer a:hover { color: var(--coral); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px; margin-bottom: 56px; }
.footer-col .logo { margin-bottom: 16px; }
.footer-col h4 { color: var(--petrol); font-size: 0.95rem; margin-bottom: 18px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col p { font-size: 0.95rem; max-width: 300px; }
.footer-bottom { border-top: 2px solid var(--bg-alt); padding-top: 26px; font-size: 0.85rem; }

/* ---------- Scroll-Animationen ---------- */
.fade-in-up, .fade-in-left, .fade-in-right, .scale-in { opacity: 0; transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in-up { transform: translateY(30px); }
.fade-in-left { transform: translateX(-30px); }
.fade-in-right { transform: translateX(30px); }
.scale-in { transform: scale(0.95); }
.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .fade-in-up, .fade-in-left, .fade-in-right, .scale-in { opacity: 1; transform: none; transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-card { grid-template-columns: 1fr; }
  .hero-media { max-width: 440px; }
  .csrd-cards { grid-template-columns: 1fr; }
  .topics-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .news-featured { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .section-padding { padding: 72px 0; }
  .hero { padding-top: 110px; }
  .hero-stats { grid-template-columns: 1fr; }
  .topics-grid, .news-grid { grid-template-columns: 1fr; }
  .counters { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .calculator-box { padding: 28px 20px; }
  .calculator-section, .contact-section { margin: 0; border-radius: 0; }
  .site-header { inset: 0 0 auto 0; }
  .site-header .container { border-radius: 0; }
  .nav-links {
    position: fixed; top: 64px; left: 0; right: 0; background: var(--bg);
    box-shadow: 0 10px 30px rgba(18, 43, 45, 0.12);
    flex-direction: column; align-items: stretch;
    padding: 16px 24px; gap: 4px; display: none;
  }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
}