/* Suderwittingen Dairy GmbH — Stylesheet
   Palette: Weidegrün, Milchweiß, Silagegelb, Gasflamme, Stallschiefer, Tau */

:root {
  --c-green: #2E5A3A;
  --c-green-deep: #22442C;
  --c-milk: #F1F5F2;
  --c-white: #FFFFFF;
  --c-straw: #D8B23A;
  --c-flame: #2C63A8;
  --c-slate: #1E2A28;
  --c-sage: #C9D6CB;
  --c-text: #1E2A28;
  --c-muted: #4A5A55;
  --c-footer-text: #D7E0DA;
  --c-error: #A3261B;

  --f-display: "Bricolage Grotesque", "Arial Narrow", system-ui, sans-serif;
  --f-body: "Source Serif 4", Georgia, "Times New Roman", serif;

  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-5: 1.5rem;
  --s-6: 2rem;
  --s-7: 3rem;
  --s-8: 4.5rem;
  --s-9: 6.5rem;

  --r-sm: 4px;
  --r-md: 10px;
  --r-lg: 28px;
  --r-pill: 999px;

  --shadow-soft: 0 12px 30px -18px rgba(30, 42, 40, 0.45);
  --shadow-ring: 0 30px 60px -30px rgba(34, 68, 44, 0.55);

  --wrap: 1180px;
  --header-h: 68px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

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

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }

body {
  margin: 0;
  font-family: var(--f-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--c-text);
  background: var(--c-milk);
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--c-green); text-underline-offset: 3px; }
a:hover { color: var(--c-flame); }

:focus-visible { outline: 3px solid var(--c-flame); outline-offset: 3px; border-radius: var(--r-sm); }

h1, h2, h3 {
  font-family: var(--f-display);
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin: 0 0 var(--s-4);
  color: var(--c-slate);
}
h1 { font-size: clamp(2.05rem, 7vw, 4.1rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 4.6vw, 2.75rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 700; }
p { margin: 0 0 var(--s-4); }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--s-4); }

.skip {
  position: absolute; left: var(--s-4); top: -60px;
  background: var(--c-slate); color: var(--c-white);
  padding: var(--s-2) var(--s-4); border-radius: var(--r-sm); z-index: 100;
}
.skip:focus { top: var(--s-2); color: var(--c-white); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(241, 245, 242, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-sage);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: var(--header-h); gap: var(--s-4); }

.brand { display: flex; align-items: center; gap: var(--s-3); text-decoration: none; color: var(--c-slate); }
.brand-mark { width: 36px; height: 36px; }
.brand-text { font-family: var(--f-display); font-weight: 800; font-size: 1.1rem; line-height: 1; display: flex; flex-direction: column; }
.brand-sub { font-weight: 500; font-size: 0.82rem; color: var(--c-muted); margin-top: 3px; }

.burger {
  width: 44px; height: 44px; border: 1px solid var(--c-sage); background: var(--c-white);
  border-radius: var(--r-md); display: inline-flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px; cursor: pointer;
}
.burger span { width: 20px; height: 2px; background: var(--c-slate); border-radius: 2px; transition: transform .25s var(--ease), opacity .2s; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav {
  position: absolute; left: 0; right: 0; top: 100%;
  background: var(--c-milk); border-bottom: 1px solid var(--c-sage);
  transform: translateY(-8px); opacity: 0; visibility: hidden;
  transition: transform .25s var(--ease), opacity .2s, visibility 0s .25s;
}
.nav.is-open { transform: translateY(0); opacity: 1; visibility: visible; transition: transform .25s var(--ease), opacity .2s; }
.nav ul { list-style: none; margin: 0; padding: var(--s-3) var(--s-4) var(--s-5); display: flex; flex-direction: column; gap: var(--s-1); }
.nav a { display: block; padding: var(--s-3) var(--s-2); font-family: var(--f-display); font-weight: 500; font-size: 1.05rem; text-decoration: none; color: var(--c-slate); }
.nav a:hover { color: var(--c-green); }
.nav .nav-cta { color: var(--c-green); font-weight: 700; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 var(--s-5);
  font-family: var(--f-display); font-weight: 700; font-size: 1rem;
  border-radius: var(--r-pill); text-decoration: none; cursor: pointer;
  border: 2px solid transparent; transition: transform .2s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--c-green); color: var(--c-white); }
.btn-primary:hover { color: var(--c-white); background: var(--c-green-deep); }
.btn-ghost { border-color: var(--c-slate); color: var(--c-slate); background: transparent; }
.btn-ghost:hover { color: var(--c-slate); }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: var(--s-7) 0 0; }
.hero-grid { display: grid; gap: var(--s-6); align-items: center; position: relative; z-index: 1; }
.hero-place { font-family: var(--f-display); font-size: 0.95rem; color: var(--c-muted); margin-bottom: var(--s-3); }
.hero h1 { max-width: 16ch; }
.hero-lead { font-size: 1.15rem; max-width: 52ch; color: var(--c-muted); }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--s-3); margin-top: var(--s-5); }

/* The Kreislauf ring — the one memorable element */
.ring { position: relative; width: min(100%, 360px); aspect-ratio: 1; margin: 0 auto var(--s-6); }
.ring-svg { width: 100%; height: 100%; overflow: visible; }
.ring-track { fill: var(--c-white); stroke: var(--c-sage); stroke-width: 1.5; }
.ring-core { fill: var(--c-green); }
.ring-text { font-family: var(--f-display); font-weight: 700; font-size: 17.5px; fill: var(--c-slate); letter-spacing: 0.02em; }
.ring-rotor { transform-origin: 200px 200px; animation: spin 60s linear infinite; }
.ring-svg { filter: drop-shadow(0 24px 30px rgba(34, 68, 44, 0.22)); }

.ring-center { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; gap: 8%; pointer-events: none; }
.drop {
  width: 17%; aspect-ratio: 1; background: var(--c-milk);
  border-radius: 0 50% 50% 50%; transform: rotate(45deg);
}
.flame {
  width: 17%; aspect-ratio: 1; background: linear-gradient(160deg, #6FA3E0, var(--c-flame));
  border-radius: 0 50% 50% 50%; transform: rotate(45deg);
  animation: flicker 3.2s ease-in-out infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes flicker {
  0%, 100% { transform: rotate(45deg) scale(1); }
  50% { transform: rotate(45deg) scale(0.92); }
}

/* Field furrows at the hero's base */
.furrows {
  height: 90px; margin-top: var(--s-5);
  background:
    linear-gradient(to bottom, var(--c-milk), rgba(241, 245, 242, 0) 45%),
    repeating-linear-gradient(100deg, var(--c-green) 0 14px, var(--c-green-deep) 14px 26px);
  clip-path: polygon(0 40%, 100% 0, 100% 100%, 0 100%);
}

/* ---------- Sections ---------- */
.section { padding: var(--s-8) 0; }
.section-lead { color: var(--c-muted); max-width: 60ch; margin-bottom: var(--s-6); }

.section-hof { background: var(--c-green-deep); color: var(--c-milk); }
.section-hof h2 { color: var(--c-white); max-width: 14ch; }
.hof-grid { display: grid; gap: var(--s-5); }
.hof-text p { max-width: 62ch; }
.facts { margin: 0; display: grid; gap: var(--s-4); border-top: 1px solid rgba(201, 214, 203, 0.35); padding-top: var(--s-5); }
.facts div { display: grid; gap: 2px; }
.facts dt { font-family: var(--f-display); font-size: 0.9rem; color: var(--c-straw); }
.facts dd { margin: 0; font-size: 1.05rem; color: var(--c-white); }

.split { display: grid; gap: var(--s-6); align-items: center; }
.split-visual { border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow-soft); }
.visual-milk { background: linear-gradient(180deg, #DDE8E0, #C9D6CB); }
.visual-gas { background: linear-gradient(180deg, #DCE6F2, #BFD0E6); }
.split-visual img { width: 100%; }
.split-copy p { max-width: 58ch; }

.section-gas { background: var(--c-white); }

.ticks { list-style: none; padding: 0; margin: var(--s-5) 0 0; display: grid; gap: var(--s-3); }
.ticks li { position: relative; padding-left: 1.9rem; }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: 0.45em;
  width: 0.9rem; height: 0.9rem; border-radius: 0 50% 50% 50%; transform: rotate(45deg);
  background: var(--c-straw);
}
.section-gas .ticks li::before { background: var(--c-flame); }

/* Cycle — a real sequence, so numbered */
.section-cycle { background: var(--c-milk); }
.cycle { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; gap: var(--s-4); }
.cycle li {
  counter-increment: step; position: relative;
  padding: var(--s-5) var(--s-5) var(--s-4) 4.2rem;
  border-left: 3px solid var(--c-green);
  background: var(--c-white); border-radius: 0 var(--r-md) var(--r-md) 0;
}
.cycle li::before {
  content: counter(step);
  position: absolute; left: var(--s-4); top: var(--s-5);
  font-family: var(--f-display); font-weight: 800; font-size: 1.8rem; line-height: 1; color: var(--c-green);
}
.cycle li:nth-child(n+4) { border-left-color: var(--c-flame); }
.cycle li:nth-child(n+4)::before { color: var(--c-flame); }
.cycle h3 { margin-bottom: var(--s-2); }
.cycle p { margin: 0; color: var(--c-muted); }

/* ---------- Contact ---------- */
.section-contact { background: var(--c-white); border-top: 1px solid var(--c-sage); }
.contact-grid { display: grid; gap: var(--s-7); }
.contact-info address { font-style: normal; margin: var(--s-5) 0; }
.contact-list { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--s-2); }
.contact-list a { word-break: break-word; font-weight: 600; }

.form { display: grid; gap: var(--s-4); background: var(--c-milk); padding: var(--s-5); border-radius: var(--r-lg); }
.field { display: grid; gap: var(--s-1); }
.field label { font-family: var(--f-display); font-weight: 500; }
.field input, .field select, .field textarea {
  width: 100%; font: inherit; color: var(--c-text);
  padding: var(--s-3) var(--s-3); background: var(--c-white);
  border: 1.5px solid #9DB0A4; border-radius: var(--r-md);
}
.field textarea { resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 3px solid var(--c-flame); outline-offset: 1px; border-color: var(--c-flame); }
.field .is-invalid, .field input.is-invalid { border-color: var(--c-error); }
.field-check { grid-template-columns: auto 1fr; align-items: start; column-gap: var(--s-3); }
.field-check input { width: 22px; height: 22px; margin-top: 3px; accent-color: var(--c-green); }
.field-check label { font-family: var(--f-body); }
.field-check .error { grid-column: 1 / -1; }
.error { margin: 0; min-height: 1.2em; font-size: 0.9rem; color: var(--c-error); }
.form .btn { justify-self: start; }
.form-success {
  margin: 0; padding: var(--s-4); border-radius: var(--r-md);
  background: var(--c-green); color: var(--c-white); font-weight: 600;
}

/* ---------- Footer ---------- */
.site-footer { background: var(--c-slate); color: var(--c-footer-text); padding-top: var(--s-7); }
.site-footer a { color: var(--c-white); }
.site-footer a:hover { color: var(--c-straw); }
.footer-top { display: grid; gap: var(--s-4); padding-bottom: var(--s-6); }
.brand-footer .brand-text { color: var(--c-white); }
.brand-footer .brand-sub { color: var(--c-footer-text); }
.footer-claim { margin: 0; }
.footer-nav { display: flex; flex-wrap: wrap; gap: var(--s-4); font-family: var(--f-display); }
.legal {
  border-top: 1px solid rgba(215, 224, 218, 0.25);
  padding-top: var(--s-5); padding-bottom: var(--s-6);
  font-size: 0.875rem; line-height: 1.6;
}
.legal p { margin-bottom: var(--s-2); max-width: 90ch; }
.legal a { word-break: break-word; }
.legal-bottom { display: flex; flex-wrap: wrap; gap: var(--s-2) var(--s-5); margin-top: var(--s-3); }

/* ---------- Legal pages & 404 ---------- */
.page-head { padding: var(--s-7) 0 var(--s-5); border-bottom: 1px solid var(--c-sage); }
.page-head h1 { font-size: clamp(2rem, 6vw, 3.2rem); }
.updated { color: var(--c-muted); margin: 0; }
.prose { padding: var(--s-6) 0 var(--s-8); }
.prose .wrap > * { max-width: 70ch; }
.prose h2 { font-size: 1.45rem; margin-top: var(--s-6); }
.prose ul { padding-left: 1.2rem; }
.prose li { margin-bottom: var(--s-2); }

.notfound { padding: var(--s-9) 0; text-align: left; }
.notfound-mark { width: 120px; height: 120px; margin-bottom: var(--s-5); }
.notfound p { max-width: 48ch; color: var(--c-muted); }

/* ---------- Reveal (one orchestrated hero moment) ---------- */
.js .hero-copy > *, .js .ring { opacity: 0; transform: translateY(14px); }
.js.is-loaded .hero-copy > *, .js.is-loaded .ring { opacity: 1; transform: none; transition: opacity .7s var(--ease), transform .7s var(--ease); }
.js.is-loaded .hero-copy > :nth-child(2) { transition-delay: .08s; }
.js.is-loaded .hero-copy > :nth-child(3) { transition-delay: .16s; }
.js.is-loaded .hero-copy > :nth-child(4) { transition-delay: .24s; }
.js.is-loaded .ring { transition-delay: .2s; }

/* ---------- Breakpoints ---------- */
@media (min-width: 480px) {
  .wrap { padding: 0 var(--s-5); }
  .facts { grid-template-columns: repeat(2, 1fr); }
  .form { padding: var(--s-6); }
}

@media (min-width: 768px) {
  body { font-size: 1.125rem; }
  .section { padding: var(--s-9) 0; }
  .split { grid-template-columns: 1fr 1fr; gap: var(--s-7); }
  .split-reverse .split-visual { order: 2; }
  .cycle { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr 1.2fr; }
  .footer-top { grid-template-columns: auto 1fr auto; align-items: center; gap: var(--s-6); }
  .facts { grid-template-columns: repeat(3, 1fr); }
  .furrows { height: 120px; }
}

@media (min-width: 1024px) {
  .burger { display: none; }
  .nav { position: static; transform: none; opacity: 1; visibility: visible; background: transparent; border: 0; transition: none; }
  .nav ul { flex-direction: row; padding: 0; gap: var(--s-2); align-items: center; }
  .nav a { padding: var(--s-2) var(--s-3); font-size: 1rem; }
  .nav .nav-cta { background: var(--c-green); color: var(--c-white); border-radius: var(--r-pill); padding: var(--s-2) var(--s-4); margin-left: var(--s-2); }
  .nav .nav-cta:hover { color: var(--c-white); background: var(--c-green-deep); }

  .hero { padding-top: var(--s-8); }
  .hero-grid { grid-template-columns: 1.15fr 1fr; gap: var(--s-8); }
  .ring { width: 440px; margin: 0; justify-self: end; }
  .hof-grid { grid-template-columns: 1fr 1.4fr; column-gap: var(--s-8); }
  .hof-grid .facts { grid-column: 1 / -1; }
  .cycle { grid-template-columns: repeat(5, 1fr); }
  .cycle li { padding: 4rem var(--s-4) var(--s-5); border-left: 0; border-top: 3px solid var(--c-green); border-radius: 0 0 var(--r-md) var(--r-md); }
  .cycle li:nth-child(n+4) { border-top-color: var(--c-flame); }
  .cycle li::before { left: var(--s-4); top: var(--s-4); }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .hero-copy > *, .js .ring { opacity: 1; transform: none; }
}