/* ==========================================================
   Demando GmbH – Architectural / editorial direction
   Palette: warm paper, deep forest ink, copper accent
   Type: serif display (system) + clean sans body
   ========================================================== */

:root {
  --paper: #f3efe7;
  --paper-2: #ebe5d8;
  --white: #fbfaf6;
  --ink: #0f2a26;
  --ink-2: #16403a;
  --ink-3: #2a7468;
  --text: #25332f;
  --muted: #5d6b66;
  --line: #d6cfbf;
  --copper: #d9833f;
  --copper-dark: #b86a2a;
  --error: #b3261e;

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;

  --container: 1320px;
  --gutter: clamp(20px, 4vw, 56px);
  --section-y: clamp(80px, 11vw, 150px);
  --header-h: 80px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 8px); }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }
address { font-style: normal; }

.container { width: 100%; max-width: calc(var(--container) + var(--gutter) * 2); margin: 0 auto; padding: 0 var(--gutter); }
.skip-link { position: absolute; left: -999px; top: 8px; background: var(--ink); color: #fff; padding: 10px 16px; z-index: 200; }
.skip-link:focus { left: 8px; }

h1, h2, h3 { font-family: var(--serif); color: var(--ink); font-weight: 600; line-height: 1.15; letter-spacing: -0.01em; }
h2 { font-size: clamp(2rem, 3.6vw, 3.2rem); }
h3 { font-size: 1.35rem; }

:focus-visible { outline: 3px solid var(--copper); outline-offset: 3px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 16px 28px; font: 600 0.95rem var(--sans); letter-spacing: 0.02em;
  border: 1.5px solid transparent; border-radius: 2px; cursor: pointer;
  transition: background .25s, color .25s, border-color .25s, transform .25s;
}
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--copper-dark); transform: translateY(-2px); }
.btn-ghost { border-color: var(--ink); color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.btn-ghost span { transition: transform .25s; }
.btn-ghost:hover span { transform: translateX(4px); }
.btn-accent { background: var(--copper); color: var(--ink); }
.btn-accent:hover { background: var(--paper); transform: translateY(-2px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100; height: var(--header-h);
  background: rgba(243, 239, 231, 0.96); border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s;
}
.site-header.scrolled { border-color: var(--line); box-shadow: 0 6px 24px rgba(15, 42, 38, .06); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark { width: 34px; height: 34px; background: var(--ink); position: relative; flex: none; }
.brand-mark::after {
  content: ""; position: absolute; left: 9px; top: 8px; width: 16px; height: 18px;
  background: var(--copper); border-radius: 0 9px 9px 0;
}
.brand-text { font: 700 1.3rem var(--serif); color: var(--ink); letter-spacing: -0.01em; line-height: 1; }
.brand-text small { font: 600 0.62rem var(--sans); letter-spacing: 0.22em; text-transform: uppercase; margin-left: 8px; color: var(--muted); }

.main-nav ul { display: flex; align-items: center; gap: 36px; }
.main-nav a { font-size: 0.95rem; font-weight: 500; color: var(--ink); position: relative; padding: 6px 0; }
.main-nav a:not(.nav-cta)::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 100%;
  background: var(--copper); transform: scaleX(0); transform-origin: left; transition: transform .3s;
}
.main-nav a:not(.nav-cta):hover::after { transform: scaleX(1); }
.nav-cta { background: var(--ink); color: var(--paper) !important; padding: 11px 22px !important; border-radius: 2px; transition: background .25s; }
.nav-cta:hover { background: var(--copper-dark); }

.nav-toggle { display: none; width: 44px; height: 44px; background: none; border: 0; cursor: pointer; padding: 0; position: relative; }
.nav-toggle span { position: absolute; left: 10px; right: 10px; height: 2px; background: var(--ink); transition: transform .3s, opacity .3s; }
.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 27px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { padding: clamp(48px, 7vw, 100px) 0 clamp(64px, 8vw, 120px); position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 80px 80px; opacity: .35;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 85%);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 85%);
}
.hero-grid { position: relative; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: clamp(40px, 6vw, 96px); align-items: center; }
.eyebrow { font: 600 0.8rem var(--sans); letter-spacing: 0.2em; text-transform: uppercase; color: var(--copper-dark); display: flex; align-items: center; gap: 14px; margin-bottom: 26px; }
.eyebrow::before { content: ""; width: 44px; height: 2px; background: var(--copper); }
.hero h1 { font-size: clamp(2.6rem, 5.6vw, 5rem); line-height: 1.05; letter-spacing: -0.02em; }
.hero h1 em { font-style: italic; color: var(--copper-dark); }
.lead { margin-top: 28px; font-size: clamp(1.05rem, 1.5vw, 1.25rem); max-width: 620px; color: var(--text); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 40px; }
.hero-facts { display: flex; flex-wrap: wrap; gap: 0; margin-top: 56px; border-top: 1px solid var(--line); padding-top: 28px; }
.hero-facts li { padding-right: 36px; margin-right: 36px; border-right: 1px solid var(--line); }
.hero-facts li:last-child { border: 0; margin: 0; padding: 0; }
.hero-facts strong { display: block; font: 600 1.5rem var(--serif); color: var(--ink); }
.hero-facts span { font-size: 0.85rem; color: var(--muted); }

.hero-visual { position: relative; padding: 0 0 40px 30px; }
.rack { background: var(--ink); padding: 22px; border-radius: 3px; box-shadow: 24px 24px 0 var(--paper-2), 0 30px 60px rgba(15, 42, 38, .25); }
.rack-top { display: flex; justify-content: space-between; font: 600 0.7rem var(--sans); letter-spacing: 0.18em; color: #8fb3ab; padding-bottom: 16px; border-bottom: 1px solid #26514a; margin-bottom: 14px; }
.rack-status { display: inline-flex; align-items: center; gap: 8px; letter-spacing: .1em; }
.rack-status i { width: 7px; height: 7px; border-radius: 50%; background: #5fd0a6; animation: pulse 2.4s infinite; }
.unit { display: flex; align-items: center; gap: 10px; background: var(--ink-2); border: 1px solid #2a5a52; padding: 13px 14px; margin-bottom: 10px; border-radius: 2px; transition: transform .3s, border-color .3s; }
.unit:hover { transform: translateX(6px); border-color: var(--copper); }
.unit b { width: 22px; height: 6px; background: #2f6a60; border-radius: 1px; }
.bar { flex: 1; height: 6px; background: #0f2a26; border-radius: 3px; overflow: hidden; margin-left: 8px; }
.bar i { display: block; height: 100%; width: var(--w); background: var(--copper); border-radius: 3px; transform-origin: left; animation: grow 1.6s ease-out both; }
.led { width: 8px; height: 8px; border-radius: 50%; background: #5fd0a6; animation: pulse 2.4s infinite; }
.unit:nth-child(odd) .led { animation-delay: .8s; }
.hero-tag { position: absolute; background: var(--white); border: 1px solid var(--line); padding: 14px 18px; box-shadow: 0 14px 30px rgba(15, 42, 38, .12); animation: float 6s ease-in-out infinite; }
.hero-tag small { display: block; font: 600 0.65rem var(--sans); letter-spacing: .18em; text-transform: uppercase; color: var(--copper-dark); }
.hero-tag strong { display: block; font: 600 0.98rem var(--serif); color: var(--ink); }
.hero-tag span { font-size: 0.82rem; color: var(--muted); }
.tag-one { left: -6px; bottom: 54px; }
.tag-two { right: -14px; top: 74px; animation-delay: 1.5s; }

@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }
@keyframes grow { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

/* ---------- Strip ---------- */
.strip { background: var(--ink); color: var(--paper); overflow: hidden; padding: 20px 0; }
.strip-track { display: flex; width: max-content; animation: slide 38s linear infinite; }
.strip-track span { font: italic 500 1.15rem var(--serif); padding: 0 34px; position: relative; white-space: nowrap; }
.strip-track span::after { content: "◆"; position: absolute; right: -6px; color: var(--copper); font-size: .6rem; top: 50%; transform: translateY(-50%); }
.strip:hover .strip-track { animation-play-state: paused; }
@keyframes slide { to { transform: translateX(-50%); } }

/* ---------- Sections ---------- */
.section { padding: var(--section-y) 0; }
.section-label { font: 600 0.78rem var(--sans); letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); display: flex; align-items: center; gap: 14px; margin-bottom: 22px; }
.section-label span { color: var(--copper-dark); font-family: var(--serif); font-size: 1rem; letter-spacing: 0; }
.section-label.light { color: #9cbdb5; }
.section-label.light span { color: var(--copper); }

/* About */
.about-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(40px, 7vw, 110px); align-items: start; }
.about-side { position: sticky; top: calc(var(--header-h) + 30px); }
.about-side h2 { margin-bottom: 36px; }
.about-image { aspect-ratio: 4 / 3; overflow: hidden; border-radius: 2px; box-shadow: -18px 18px 0 var(--paper-2); }
.about-image svg { width: 100%; height: 100%; transition: transform .8s ease; }
.about-image:hover svg { transform: scale(1.05); }
.about-body p { margin-bottom: 22px; color: var(--text); }
.about-body .big { font: 500 clamp(1.3rem, 2vw, 1.7rem) / 1.45 var(--serif); color: var(--ink); margin-bottom: 30px; }
.info-panels { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 44px; border: 1px solid var(--line); background: var(--white); }
.info-panels article { padding: 28px 24px; border-right: 1px solid var(--line); transition: background .3s; }
.info-panels article:last-child { border: 0; }
.info-panels article:hover { background: var(--paper-2); }
.info-panels h3 { font-size: 1.1rem; margin-bottom: 10px; }
.info-panels p { font-size: 0.93rem; color: var(--muted); margin: 0; }

/* Services */
.services { background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.services-head { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 80px; align-items: end; margin-bottom: 60px; }
.services-head .section-label { grid-column: 1 / -1; margin-bottom: 0; }
.services-head p:last-child { color: var(--muted); font-size: 1.05rem; }
.service-list { border-top: 2px solid var(--ink); }
.service { display: grid; grid-template-columns: 90px 1.1fr 1.4fr; gap: 30px; align-items: start; padding: 38px 20px; border-bottom: 1px solid var(--line); transition: background .35s, padding-left .35s; }
.service:hover { background: var(--paper); padding-left: 34px; }
.service-no { font: italic 500 1.6rem var(--serif); color: var(--copper-dark); }
.service-title h3 { font-size: clamp(1.4rem, 2.2vw, 1.9rem); margin-bottom: 14px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags span { font: 600 0.7rem var(--sans); letter-spacing: .1em; text-transform: uppercase; padding: 5px 12px; border: 1px solid var(--line); color: var(--muted); border-radius: 30px; }
.service-text p { color: var(--text); max-width: 600px; }

/* Benefits */
.benefits { background: var(--ink); color: #cfe0db; position: relative; overflow: hidden; }
.benefits::after { content: ""; position: absolute; right: -180px; top: -180px; width: 520px; height: 520px; border: 70px solid var(--ink-2); border-radius: 50%; opacity: .6; pointer-events: none; }
.benefits h2, .benefits h3 { color: var(--paper); }
.benefits-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: clamp(40px, 7vw, 120px); position: relative; z-index: 1; }
.benefits-intro { position: sticky; top: calc(var(--header-h) + 30px); align-self: start; }
.benefits-intro h2 { margin-bottom: 24px; }
.benefits-intro p { margin-bottom: 36px; color: #a9c4bd; }
.benefit-stack { display: flex; flex-direction: column; gap: 18px; }
.benefit { display: flex; gap: 26px; padding: 30px; background: var(--ink-2); border-left: 3px solid var(--copper); transition: transform .35s, background .35s; }
.benefit:nth-child(even) { margin-left: clamp(0px, 4vw, 56px); }
.benefit:hover { transform: translateX(8px); background: #1b4a43; }
.benefit-icon { flex: none; width: 54px; height: 54px; border: 1px solid #3b7a6f; display: grid; place-items: center; }
.benefit-icon svg { width: 26px; height: 26px; fill: none; stroke: var(--copper); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.benefit h3 { font-size: 1.25rem; margin-bottom: 8px; }
.benefit p { font-size: 0.97rem; color: #a9c4bd; }

/* Approach */
.approach-head { max-width: 720px; margin-bottom: 56px; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); counter-reset: s; position: relative; }
.steps::before { content: ""; position: absolute; top: 27px; left: 0; right: 0; height: 1px; background: var(--ink); opacity: .35; }
.step { padding: 0 32px 0 0; position: relative; }
.step-no { display: grid; place-items: center; width: 54px; height: 54px; border-radius: 50%; background: var(--paper); border: 1.5px solid var(--ink); font: 600 1.3rem var(--serif); color: var(--ink); margin-bottom: 26px; position: relative; transition: background .3s, color .3s, border-color .3s; }
.step:hover .step-no { background: var(--copper); border-color: var(--copper); color: var(--ink); }
.step h3 { margin-bottom: 10px; }
.step p { color: var(--muted); font-size: 0.97rem; }

/* Contact */
.contact { background: var(--paper-2); border-top: 1px solid var(--line); }
.contact-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: clamp(40px, 6vw, 100px); align-items: start; }
.contact-info h2 { margin-bottom: 22px; }
.contact-info > p { color: var(--muted); margin-bottom: 36px; max-width: 520px; }
.contact-card { background: var(--ink); color: var(--paper); padding: 10px 34px; border-radius: 2px; }
.contact-card div { padding: 22px 0; border-bottom: 1px solid #26514a; }
.contact-card div:last-child { border: 0; }
.contact-card small { display: block; font: 600 0.68rem var(--sans); letter-spacing: .2em; text-transform: uppercase; color: var(--copper); margin-bottom: 6px; }
.contact-card strong { font: 500 1.15rem/1.5 var(--serif); }
.contact-card a { border-bottom: 1px solid var(--copper); transition: color .25s; }
.contact-card a:hover { color: var(--copper); }

.contact-form { background: var(--white); padding: clamp(26px, 4vw, 48px); border: 1px solid var(--line); box-shadow: 14px 14px 0 rgba(15, 42, 38, .06); }
.contact-form h3 { font-size: 1.6rem; margin-bottom: 26px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
.field { margin-bottom: 20px; }
.field label { display: block; font: 600 0.85rem var(--sans); color: var(--ink); margin-bottom: 8px; }
.field input, .field select, .field textarea {
  width: 100%; font: 400 1rem var(--sans); color: var(--text); background: var(--paper);
  border: 1.5px solid var(--line); border-radius: 2px; padding: 13px 14px; transition: border-color .25s, background .25s;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--ink-3); background: #fff; }
.field.invalid input, .field.invalid textarea { border-color: var(--error); }
.error { display: block; color: var(--error); font-size: 0.82rem; min-height: 0; margin-top: 6px; }
.error:empty { display: none; }
.consent { display: flex; gap: 12px; align-items: flex-start; font-size: 0.9rem; color: var(--muted); margin-bottom: 6px; cursor: pointer; }
.consent input { margin-top: 5px; accent-color: var(--ink); width: 17px; height: 17px; flex: none; }
.consent-error { margin-bottom: 14px; }
.contact-form .btn { margin-top: 14px; }
.form-note { margin-top: 18px; font-size: 0.92rem; }
.form-note.ok { color: var(--ink-3); font-weight: 600; }

/* Footer */
.site-footer { background: #0a1c19; color: #a9c4bd; padding: 80px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 48px; padding-bottom: 60px; }
.site-footer .brand-text { color: var(--paper); }
.site-footer .brand-text small { color: #7fa59c; }
.site-footer .brand-mark { background: var(--ink-2); }
.footer-brand p { margin-top: 20px; max-width: 300px; font-size: 0.95rem; }
.site-footer h4 { font: 600 0.75rem var(--sans); letter-spacing: .2em; text-transform: uppercase; color: var(--copper); margin-bottom: 18px; }
.site-footer li { margin-bottom: 10px; font-size: 0.95rem; }
.site-footer address { font-size: 0.95rem; line-height: 1.8; }
.site-footer a { transition: color .25s; }
.site-footer a:hover { color: var(--copper); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 26px; padding-bottom: 30px; border-top: 1px solid #1d3f39; font-size: 0.88rem; }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s ease; }
.reveal.visible { opacity: 1; transform: none; }
.js-off .reveal { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { max-width: 560px; }
  .about-grid, .benefits-grid, .contact-grid { grid-template-columns: 1fr; }
  .about-side, .benefits-intro { position: static; }
  .services-head { grid-template-columns: 1fr; }
  .service { grid-template-columns: 60px 1fr; }
  .service-text { grid-column: 2; }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 48px; }
  .steps::before { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
  :root { --header-h: 70px; }
  .nav-toggle { display: block; }
  .main-nav {
    position: fixed; top: var(--header-h); left: 0; right: 0; background: var(--paper);
    border-bottom: 1px solid var(--line); padding: 10px var(--gutter) 26px;
    transform: translateY(-12px); opacity: 0; visibility: hidden; transition: transform .3s, opacity .3s, visibility .3s;
    box-shadow: 0 20px 30px rgba(15, 42, 38, .1);
  }
  .main-nav.open { transform: none; opacity: 1; visibility: visible; }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .main-nav li a { display: block; padding: 16px 0; border-bottom: 1px solid var(--line); font-size: 1.05rem; }
  .main-nav li:last-child a { margin-top: 18px; text-align: center; border: 0; }
  .main-nav a:not(.nav-cta)::after { display: none; }
  .info-panels { grid-template-columns: 1fr; }
  .info-panels article { border-right: 0; border-bottom: 1px solid var(--line); }
  .benefit:nth-child(even) { margin-left: 0; }
}

@media (max-width: 600px) {
  body { font-size: 16px; }
  .hero-facts li { padding-right: 20px; margin-right: 20px; }
  .hero-visual { padding-left: 0; }
  .rack { box-shadow: 10px 10px 0 var(--paper-2); }
  .tag-one { left: 8px; bottom: 6px; }
  .tag-two { display: none; }
  .service { grid-template-columns: 1fr; gap: 12px; padding: 30px 6px; }
  .service-text { grid-column: auto; }
  .service:hover { padding-left: 6px; }
  .steps { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .benefit { flex-direction: column; gap: 16px; padding: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .btn { width: 100%; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}