:root {
  --bg: #f4f1ec;
  --surface: #ffffff;
  --ink: #1b1d1f;
  --muted: #5d6166;
  --line: #ddd6cc;
  --dark: #15181b;
  --dark-2: #1f2428;
  --dark-ink: #ece8e1;
  --dark-muted: #a3a8ad;
  --accent: #e0692a;      /* spark orange */
  --accent-ink: #ffffff;
  --river: #2f7f86;       /* river teal */
  --radius: 10px;
  --max: 1160px;
  --head: "Oswald", "Arial Narrow", sans-serif;
  --body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--head); line-height: 1.1; margin: 0 0 .5em; letter-spacing: .01em; text-transform: uppercase; }
h1 { font-size: clamp(2.6rem, 7vw, 5rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.eyebrow { font: 600 .8rem/1 var(--body); letter-spacing: .18em; text-transform: uppercase; color: var(--accent); margin-bottom: 1rem; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 40rem; }

/* Buttons */
.btn {
  display: inline-block; padding: .85rem 1.5rem; border: 2px solid var(--accent); border-radius: 6px;
  background: var(--accent); color: var(--accent-ink); font: 600 .95rem/1 var(--head); letter-spacing: .08em;
  text-transform: uppercase; text-decoration: none; cursor: pointer; transition: background .2s, color .2s, transform .1s;
}
.btn:hover { background: #c85a20; border-color: #c85a20; }
.btn:active { transform: translateY(1px); }
.btn-ghost { background: transparent; color: var(--dark-ink); border-color: var(--dark-ink); }
.btn-ghost:hover { background: var(--dark-ink); color: var(--dark); border-color: var(--dark-ink); }
.btn-small { padding: .55rem 1rem; font-size: .85rem; }
.btn-block { width: 100%; }
:focus-visible { outline: 3px solid var(--river); outline-offset: 2px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(21, 24, 27, .96); color: var(--dark-ink); border-bottom: 1px solid #2a3035; }
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: .7rem; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 42px; height: 42px; border: 2px solid var(--accent); border-radius: 50%; font: 700 .85rem var(--head); color: var(--accent); letter-spacing: .05em; }
.brand-name { font: 600 1.05rem var(--head); letter-spacing: .06em; text-transform: uppercase; }
.nav-links { display: flex; align-items: center; gap: 1.6rem; }
.nav-links a:not(.btn) { text-decoration: none; font-weight: 500; font-size: .95rem; color: var(--dark-muted); transition: color .2s; }
.nav-links a:not(.btn):hover, .nav-links a[aria-current="page"] { color: var(--dark-ink); }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; margin: 5px 0; background: var(--dark-ink); transition: transform .2s, opacity .2s; }

/* Hero */
.hero {
  position: relative; color: var(--dark-ink); padding: 120px 0 110px;
  background:
    radial-gradient(ellipse at 85% 20%, rgba(224, 105, 42, .28), transparent 55%),
    radial-gradient(ellipse at 10% 90%, rgba(47, 127, 134, .35), transparent 55%),
    var(--dark);
  overflow: hidden;
}
.hero::after { /* subtle diamond-plate texture */
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .06;
  background-image: repeating-linear-gradient(45deg, #fff 0 2px, transparent 2px 22px), repeating-linear-gradient(-45deg, #fff 0 2px, transparent 2px 22px);
}
.hero-inner { position: relative; z-index: 1; }
.hero .lead { color: var(--dark-muted); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; }

/* Sections */
.section { padding: 90px 0; }
.section-dark { background: var(--dark); color: var(--dark-ink); }
.section-dark .lead, .section-dark p { color: var(--dark-muted); }
.section-dark h2 { color: var(--dark-ink); }
.section-dark .eyebrow, .page-head .eyebrow { color: var(--accent); }
.page-head { background: var(--dark); color: var(--dark-ink); padding: 80px 0 60px; }
.page-head .lead { color: var(--dark-muted); }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 2.5rem; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.card p { color: var(--muted); margin: 0; }
.card-feature { grid-column: span 1; border-top: 4px solid var(--accent); }
.card-feature:first-child { grid-column: span 2; }
.card-feature:nth-child(2) { grid-column: span 1; }

/* Carousel */
.carousel { position: relative; margin-top: 2.5rem; }
.carousel-viewport { overflow: hidden; border-radius: var(--radius); background: var(--dark-2); }
.carousel-track { display: flex; margin: 0; padding: 0; list-style: none; transition: transform .5s ease; }
.carousel-slide { position: relative; flex: 0 0 100%; aspect-ratio: 16 / 9; }
.carousel-slide img { width: 100%; height: 100%; object-fit: cover; }
.carousel-slide.is-placeholder img { display: none; }
.carousel-slide.is-placeholder::before {
  content: "Photo coming soon"; position: absolute; inset: 0; display: grid; place-items: center;
  font: 600 1.1rem var(--head); letter-spacing: .15em; text-transform: uppercase; color: #5f676e;
  background: repeating-linear-gradient(45deg, #1f2428 0 18px, #242a2f 18px 36px);
}
.carousel-caption {
  position: absolute; left: 0; right: 0; bottom: 0; margin: 0; padding: 40px 24px 20px;
  background: linear-gradient(transparent, rgba(0, 0, 0, .75)); color: #fff !important;
  font: 600 1.1rem var(--head); letter-spacing: .08em; text-transform: uppercase;
}
.carousel-btn {
  position: absolute; top: calc(50% - 24px); transform: translateY(-50%); width: 48px; height: 48px; border-radius: 50%;
  border: 0; background: rgba(0, 0, 0, .55); color: #fff; font-size: 2rem; line-height: 1; cursor: pointer; transition: background .2s;
}
.carousel-btn:hover { background: var(--accent); }
.carousel-btn.prev { left: 14px; }
.carousel-btn.next { right: 14px; }
.carousel-dots { display: flex; justify-content: center; gap: 10px; margin-top: 18px; }
.carousel-dots button { width: 12px; height: 12px; padding: 0; border-radius: 50%; border: 2px solid var(--dark-muted); background: transparent; cursor: pointer; }
.carousel-dots button[aria-selected="true"] { background: var(--accent); border-color: var(--accent); }

/* About */
.about { display: grid; grid-template-columns: 1.4fr 1fr; gap: 60px; align-items: center; }
.about p { color: var(--muted); }
.facts { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.facts li { background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--river); border-radius: var(--radius); padding: 18px 22px; }
.facts strong { display: block; font: 600 1.4rem var(--head); text-transform: uppercase; }
.facts span { color: var(--muted); font-size: .9rem; }

/* Contact + forms */
.contact { display: grid; grid-template-columns: 1fr 1.2fr; gap: 60px; }
.contact-list { list-style: none; padding: 0; margin: 2rem 0 0; display: grid; gap: 14px; }
.contact-list li { display: flex; flex-direction: column; color: var(--dark-ink); }
.contact-list span { font-size: .75rem; letter-spacing: .15em; text-transform: uppercase; color: var(--accent); }
.contact-list a { color: var(--dark-ink); text-decoration: none; overflow-wrap: anywhere; }
.contact-list a:hover { color: var(--accent); }

.form { display: grid; gap: 16px; }
.form label { display: grid; gap: 6px; font-size: .9rem; font-weight: 500; }
.form input, .form select, .form textarea {
  width: 100%; padding: .75rem .9rem; border-radius: 6px; font: inherit; font-size: 1rem;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink);
}
.form textarea { resize: vertical; }
.section-dark .form label { color: var(--dark-ink); }
.section-dark .form input, .section-dark .form select, .section-dark .form textarea { background: var(--dark-2); border-color: #343b41; color: var(--dark-ink); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-note { font-size: .85rem; color: var(--muted); margin: 0; }
.section-dark .form-note { color: var(--dark-muted); }

/* Product */
.product { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.product-media { position: sticky; top: 96px; aspect-ratio: 4 / 3; border-radius: var(--radius); overflow: hidden; background: var(--dark-2); }
.product-media img { width: 100%; height: 100%; object-fit: cover; }
.product-media.is-placeholder img { display: none; }
.product-media.is-placeholder::before {
  content: "Product photo coming soon"; position: absolute; inset: 0; display: grid; place-items: center;
  font: 600 1rem var(--head); letter-spacing: .15em; text-transform: uppercase; color: #5f676e;
  background: repeating-linear-gradient(45deg, #1f2428 0 18px, #242a2f 18px 36px);
}
.price { font: 700 2.4rem var(--head); margin: .2rem 0 1rem; }
.price span { font: 500 1rem var(--body); color: var(--muted); }
.spec-list { padding-left: 1.2rem; margin: 0 0 2rem; color: var(--muted); }
.spec-list li { margin-bottom: .35rem; }
.order-form { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.order-total { margin: 0; font-size: 1.05rem; }

/* Footer */
.site-footer { background: #0e1012; color: var(--dark-muted); padding: 28px 0; font-size: .9rem; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; }
.footer-inner p { margin: 0; }
.footer-inner nav { display: flex; gap: 20px; }
.footer-inner a { text-decoration: none; }
.footer-inner a:hover { color: var(--accent); }

/* Responsive */
@media (max-width: 900px) {
  .cards { grid-template-columns: 1fr 1fr; }
  .card-feature:first-child { grid-column: span 2; }
  .about, .contact, .product { grid-template-columns: 1fr; gap: 40px; }
  .product-media { position: relative; top: 0; }
}
@media (max-width: 720px) {
  .container { padding: 0 16px; }
  .nav-toggle { display: block; }
  .brand-name { font-size: .9rem; }
  .nav-links {
    position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0;
    background: var(--dark); border-bottom: 1px solid #2a3035; padding: 8px 16px 20px; display: none;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a:not(.btn) { padding: 14px 0; border-bottom: 1px solid #2a3035; }
  .nav-links .btn { margin-top: 14px; text-align: center; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero { padding: 80px 0 70px; }
  .section { padding: 64px 0; }
  .cards { grid-template-columns: 1fr; }
  .card-feature:first-child { grid-column: auto; }
  .form-row { grid-template-columns: 1fr; }
  .carousel-slide { aspect-ratio: 4 / 3; }
  .carousel-btn { width: 40px; height: 40px; font-size: 1.6rem; }
  .order-form { padding: 20px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .carousel-track { transition: none; }
}