/* ============================================================
   KIRILL — Kirill Minerals UG · Design System
   Industrial editorial · dark charcoal · petroleum amber
   ============================================================ */

@font-face { font-family: 'Archivo'; src: url('../fonts/archivo-400.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Archivo'; src: url('../fonts/archivo-600.woff2') format('woff2'); font-weight: 600; font-display: swap; }
@font-face { font-family: 'Archivo'; src: url('../fonts/archivo-expanded-700.woff2') format('woff2'); font-weight: 700; font-display: swap; }
@font-face { font-family: 'Plex Mono'; src: url('../fonts/plexmono-400.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Plex Mono'; src: url('../fonts/plexmono-500.woff2') format('woff2'); font-weight: 500; font-display: swap; }

:root {
  --bg: #0c0e11;
  --bg-2: #10141a;
  --bg-3: #161b22;
  --ink: #e9e4da;
  --ink-dim: #97a0a8;
  --amber: #c97a2b;
  --amber-hi: #e09a4a;
  --steel: #5d6b76;
  --line: #232a31;
  --sans: 'Archivo', 'Helvetica Neue', Arial, sans-serif;
  --mono: 'Plex Mono', 'SFMono-Regular', Consolas, monospace;
  --pad: clamp(1.25rem, 4vw, 4rem);
  --max: 1280px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.mono { font-family: var(--mono); font-size: .8125rem; letter-spacing: .04em; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

a { color: var(--ink); text-decoration: none; }
p a, .legal-body a { color: var(--amber-hi); text-decoration: underline; text-underline-offset: 3px; }

::selection { background: var(--amber); color: var(--bg); }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--amber); color: var(--bg); padding: .6rem 1rem; font-family: var(--mono);
}
.skip-link:focus { left: 0; }

:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }

/* ---------- Loading mark ---------- */
.load-mark {
  position: fixed; inset: 0; z-index: 150; display: grid; place-items: center;
  background: var(--bg); transition: opacity .5s, visibility .5s;
}
.load-mark.done { opacity: 0; visibility: hidden; }
.lm-flow { stroke-dasharray: 90; stroke-dashoffset: 90; animation: lmflow 1.2s ease forwards; }
@keyframes lmflow { to { stroke-dashoffset: 0; } }

/* ---------- Header ---------- */
.site-head {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between; gap: 1.5rem;
  padding: .9rem var(--pad);
  border-bottom: 1px solid transparent;
  transition: background .3s, border-color .3s;
}
.site-head.scrolled { background: rgba(12,14,17,.92); border-bottom-color: var(--line); backdrop-filter: blur(8px); }

.brand { display: flex; align-items: center; gap: .7rem; color: var(--ink); }
.brand-word { font-weight: 700; letter-spacing: .22em; font-size: 1.05rem; display: flex; flex-direction: column; line-height: 1; }
.brand-word small { font-family: var(--mono); font-size: .5rem; letter-spacing: .48em; color: var(--steel); margin-top: .3rem; font-weight: 400; }

.site-nav { display: flex; gap: 1.8rem; }
.site-nav a {
  font-size: .8125rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-dim);
  padding: .35rem 0; position: relative; transition: color .25s;
}
.site-nav a::after {
  content: ''; position: absolute; left: 0; bottom: 0; height: 1px; width: 0;
  background: var(--amber); transition: width .3s;
}
.site-nav a:hover, .site-nav a[aria-current] { color: var(--ink); }
.site-nav a[aria-current]::after, .site-nav a:hover::after { width: 100%; }

.head-tools { display: flex; align-items: center; gap: 1rem; }
.lang-toggle {
  display: flex; align-items: center; gap: .45rem; background: none; border: 1px solid var(--line);
  color: var(--steel); font-family: var(--mono); font-size: .72rem; letter-spacing: .1em;
  padding: .42rem .7rem; cursor: pointer; transition: border-color .25s;
}
.lang-toggle:hover { border-color: var(--steel); }
.lang-toggle span.on { color: var(--amber-hi); }
.lang-toggle i { width: 1px; height: .8em; background: var(--line); }

.nav-burger { display: none; background: none; border: 0; cursor: pointer; width: 34px; height: 30px; position: relative; }
.nav-burger span { position: absolute; left: 5px; right: 5px; height: 2px; background: var(--ink); transition: transform .3s, top .3s; }
.nav-burger span:nth-child(1) { top: 10px; }
.nav-burger span:nth-child(2) { top: 18px; }
.nav-burger[aria-expanded="true"] span:nth-child(1) { top: 14px; transform: rotate(45deg); }
.nav-burger[aria-expanded="true"] span:nth-child(2) { top: 14px; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100svh; display: flex; align-items: center; overflow: hidden; }
.hero-canvas, .hero-canvas canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-fallback {
  position: absolute; inset: 0;
  background:
    radial-gradient(1200px 600px at 75% 80%, rgba(201,122,43,.10), transparent 60%),
    radial-gradient(900px 500px at 20% 20%, rgba(93,107,118,.12), transparent 60%),
    repeating-linear-gradient(90deg, transparent 0 119px, rgba(35,42,49,.5) 119px 120px),
    var(--bg);
}
.hero-fallback.webgl-on { opacity: .55; transition: opacity 1.2s; }
.hero-inner { position: relative; z-index: 2; padding: 7rem var(--pad) 5rem; max-width: var(--max); width: 100%; margin: 0 auto; }
.kicker { color: var(--amber-hi); text-transform: uppercase; letter-spacing: .3em; font-size: .72rem; }
.hero-title {
  font-weight: 700; font-size: clamp(2.6rem, 7.5vw, 5.6rem); line-height: 1.02;
  letter-spacing: -.015em; margin: 1.4rem 0 1.6rem; text-transform: uppercase;
}
.hero-title em { font-style: normal; color: var(--amber); }
.hero-sub { max-width: 34rem; color: var(--ink-dim); font-size: 1.1rem; }
.hero-cta { display: flex; gap: 1rem; margin-top: 2.4rem; flex-wrap: wrap; }

.hero-ticker {
  position: absolute; bottom: 0; left: 0; right: 0; z-index: 2;
  display: flex; gap: 4rem; padding: .85rem var(--pad);
  border-top: 1px solid var(--line); color: var(--steel); font-size: .72rem;
  white-space: nowrap; overflow: hidden;
}
.hero-scroll {
  position: absolute; right: var(--pad); bottom: 4.5rem; z-index: 2;
  writing-mode: vertical-rl; color: var(--steel); font-size: .68rem; letter-spacing: .35em; text-transform: uppercase;
}
.hero-scroll::after {
  content: ''; display: block; width: 1px; height: 3rem; background: var(--amber);
  margin: .8rem auto 0; animation: scrollpulse 2.2s ease-in-out infinite;
}
@keyframes scrollpulse { 50% { transform: scaleY(.35); transform-origin: top; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; font-family: var(--mono); font-size: .8rem; letter-spacing: .12em;
  text-transform: uppercase; padding: .95rem 1.8rem; border: 1px solid var(--amber);
  position: relative; transition: color .25s, background .25s, border-color .25s;
}
.btn-solid { background: var(--amber); color: var(--bg); }
.btn-solid:hover { background: var(--amber-hi); border-color: var(--amber-hi); }
.btn-line { color: var(--amber-hi); }
.btn-line:hover { background: rgba(201,122,43,.12); }
.btn-s { padding: .7rem 1.3rem; }

/* ---------- Sections ---------- */
.sec { padding: clamp(4rem, 9vw, 7.5rem) var(--pad); max-width: var(--max); margin: 0 auto; }
.sec-dark {
  max-width: none; background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.sec-dark > * { max-width: calc(var(--max) - 2 * 0px); margin-left: auto; margin-right: auto; }

.sec-head { display: flex; align-items: baseline; gap: 1.6rem; margin-bottom: 3rem; max-width: var(--max); }
.sec-head .idx { color: var(--amber); font-size: .8rem; }
.sec-head h2 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); font-weight: 700; text-transform: uppercase; letter-spacing: .01em; }

.idx { font-family: var(--mono); color: var(--amber); letter-spacing: .12em; }

.sec-statement { padding-top: clamp(5rem, 10vw, 8rem); }
.statement {
  font-size: clamp(1.5rem, 3.2vw, 2.4rem); line-height: 1.32; font-weight: 600;
  max-width: 56rem; letter-spacing: -.01em;
}

.sec-note { color: var(--steel); font-family: var(--mono); font-size: .8rem; margin-top: 2.5rem; max-width: 44rem; }
.sec-note-block { padding-top: 0; }
.sec-note-block .mono { color: var(--steel); border-left: 2px solid var(--amber); padding-left: 1.2rem; max-width: 46rem; display: block; }

/* Row list — asymmetric editorial rows, not cards */
.row-list { border-top: 1px solid var(--line); }
.row-item {
  display: grid; grid-template-columns: 4rem minmax(10rem, 18rem) 1fr 3rem;
  gap: 2rem; align-items: start; padding: 2.4rem 0; border-bottom: 1px solid var(--line);
  position: relative; transition: padding-left .3s;
}
a.row-item:hover { padding-left: 1rem; }
a.row-item:hover .ri-arr { transform: translateX(.5rem); color: var(--amber-hi); }
.ri-no { color: var(--amber); font-size: .8rem; padding-top: .4rem; }
.row-item h3 { font-size: 1.35rem; font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
.row-item p { color: var(--ink-dim); font-size: .98rem; max-width: 38rem; }
.ri-arr { color: var(--steel); font-size: 1.4rem; justify-self: end; transition: transform .3s, color .3s; }

/* Product strip (home) */
.prod-strip { display: flex; flex-wrap: wrap; border: 1px solid var(--line); border-right: 0; }
.prod-chip {
  flex: 1 1 180px; display: flex; flex-direction: column; gap: 2.6rem;
  padding: 1.6rem 1.4rem 1.2rem; border-right: 1px solid var(--line);
  background: transparent; transition: background .3s;
  position: relative;
}
.prod-chip::before {
  content: ''; position: absolute; top: 0; left: 0; width: 0; height: 2px; background: var(--amber); transition: width .35s;
}
.prod-chip:hover { background: var(--bg-3); }
.prod-chip:hover::before { width: 100%; }
.pc-name { font-weight: 600; font-size: 1.05rem; letter-spacing: .04em; text-transform: uppercase; }
.pc-norm { color: var(--steel); font-size: .7rem; }

/* Stats */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.stat { background: var(--bg); padding: 2rem 1.6rem 1.8rem; display: flex; flex-direction: column; gap: .9rem; }
.stat strong { font-size: 2.2rem; font-weight: 500; color: var(--ink); letter-spacing: -.02em; }
.stat strong i { font-style: normal; color: var(--amber); }
.stat span { color: var(--ink-dim); font-size: .88rem; line-height: 1.5; }

/* CTA */
.sec-cta { border-top: 1px solid var(--line); }
.sec-cta h2 { font-size: clamp(1.8rem, 4vw, 3rem); font-weight: 700; text-transform: uppercase; max-width: 52rem; }
.sec-cta p { color: var(--ink-dim); margin-top: 1.2rem; max-width: 44rem; }
.sec-cta .btn { margin-top: 2.4rem; }

/* ---------- Inner pages ---------- */
.page-hero { padding: clamp(9rem, 16vw, 12rem) var(--pad) clamp(2.5rem, 5vw, 4rem); max-width: var(--max); margin: 0 auto; }
.page-hero .idx { display: block; margin-bottom: 1.4rem; font-size: .78rem; text-transform: uppercase; }
.page-hero h1 {
  font-size: clamp(2.1rem, 5.5vw, 4rem); font-weight: 700; line-height: 1.05;
  text-transform: uppercase; letter-spacing: -.01em; max-width: 56rem;
}
.ph-sub { color: var(--ink-dim); margin-top: 1.6rem; max-width: 40rem; }

.split { display: grid; grid-template-columns: minmax(12rem, 4fr) 8fr; gap: clamp(2rem, 5vw, 5rem); }
.split-a h2 { font-size: 1.15rem; font-weight: 600; text-transform: uppercase; letter-spacing: .12em; color: var(--amber-hi); position: sticky; top: 6rem; }
.split-b p + p { margin-top: 1.3rem; }
.split-b p { color: var(--ink-dim); max-width: 42rem; }

.dash-list { list-style: none; }
.dash-list li {
  padding: 1rem 0 1rem 1.8rem; border-bottom: 1px solid var(--line); color: var(--ink-dim); position: relative;
}
.dash-list li::before { content: '—'; position: absolute; left: 0; color: var(--amber); }

/* Flow list (numbered process) */
.flow-list { list-style: none; counter-reset: flow; border-top: 1px solid var(--line); max-width: var(--max); margin: 0 auto; }
.flow-list li {
  display: grid; grid-template-columns: 5rem minmax(12rem, 20rem) 1fr; gap: 2rem;
  padding: 2.2rem 0; border-bottom: 1px solid var(--line); align-items: start;
}
.flow-list .mono { color: var(--amber); font-size: .8rem; padding-top: .35rem; }
.flow-list h3 { font-size: 1.2rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.flow-list p { color: var(--ink-dim); font-size: .96rem; max-width: 36rem; }

/* Standards grid (logistik) */
.std-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); max-width: var(--max); margin: 0 auto; }
.std { background: var(--bg-2); padding: 2rem 1.8rem; }
.std .mono { color: var(--amber-hi); font-size: 1.05rem; font-weight: 500; display: block; margin-bottom: .9rem; }
.std p { color: var(--ink-dim); font-size: .94rem; }

/* Route band */
.route-band { padding-top: 0; padding-bottom: 0; max-width: none; border-bottom: 1px solid var(--line); }
.route-svg { display: block; width: 100%; height: clamp(100px, 14vw, 160px); }
.route-flow { animation: routeflow 6s linear infinite; }
@keyframes routeflow { to { stroke-dashoffset: -1200; } }
.route-labels text { letter-spacing: .2em; }

/* ---------- Products page ---------- */
.prod-block {
  display: grid; grid-template-columns: minmax(16rem, 5fr) 7fr; gap: clamp(2rem, 5vw, 5rem);
  border-top: 1px solid var(--line);
}
.prod-block.pb-flip { grid-template-columns: 7fr minmax(16rem, 5fr); }
.prod-block.pb-flip .pb-head { order: 2; }
.pb-head { display: flex; gap: 1.4rem; align-items: flex-start; position: relative; }
.pb-icon { color: var(--ink-dim); flex: 0 0 auto; padding-top: .3rem; }
.pb-norm { color: var(--amber); font-size: .72rem; display: block; margin-bottom: .5rem; }
.pb-head h2 { font-size: clamp(1.7rem, 3.5vw, 2.5rem); font-weight: 700; text-transform: uppercase; line-height: 1; }
.pb-no { margin-left: auto; color: var(--line); font-size: 2.6rem; font-weight: 500; line-height: 1; }
.pb-body p { color: var(--ink-dim); max-width: 40rem; }

.spec-table { width: 100%; max-width: 34rem; border-collapse: collapse; margin: 1.8rem 0; }
.spec-table th, .spec-table td { text-align: left; padding: .65rem 0; border-bottom: 1px solid var(--line); font-size: .9rem; }
.spec-table th { font-weight: 400; color: var(--steel); padding-right: 2rem; }
.spec-table td { color: var(--ink); font-size: .82rem; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: minmax(15rem, 4fr) 8fr; gap: clamp(2.5rem, 6vw, 6rem); }
.contact-aside h2 { color: var(--amber-hi); font-size: .8rem; text-transform: uppercase; letter-spacing: .2em; margin-bottom: 1.4rem; }
.contact-aside .mono { color: var(--ink-dim); font-size: .85rem; line-height: 2; }
.contact-aside a { color: var(--amber-hi); }
.aside-note { color: var(--steel); font-size: .88rem; margin-top: 1.6rem; max-width: 22rem; }

.contact-form { display: flex; flex-direction: column; gap: 1.4rem; }
.ff { display: flex; flex-direction: column; gap: .45rem; }
.ff-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; }
.ff label { font-family: var(--mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-dim); }
.ff input, .ff select, .ff textarea {
  background: var(--bg-2); border: 1px solid var(--line); color: var(--ink);
  font-family: var(--sans); font-size: 1rem; padding: .85rem 1rem;
  transition: border-color .25s; border-radius: 0; appearance: none;
}
.ff select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%2397a0a8'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 1rem center;
}
.ff input:focus, .ff select:focus, .ff textarea:focus { border-color: var(--amber); outline: none; }
.ff-hint { display: none; color: #d4663a; font-size: .8rem; }
.ff-err input, .ff-err select, .ff-err textarea { border-color: #d4663a; }
.ff-err .ff-hint { display: block; }

.ff-check { flex-direction: row; flex-wrap: wrap; gap: .8rem; align-items: flex-start; }
.ff-check input { width: 1.15rem; height: 1.15rem; accent-color: var(--amber); appearance: auto; flex: 0 0 auto; margin-top: .25rem; }
.ff-check label { flex: 1; text-transform: none; letter-spacing: 0; font-family: var(--sans); font-size: .88rem; line-height: 1.55; }
.ff-check .ff-hint { flex-basis: 100%; }

.hp-field { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }

.form-msg { padding: 1.2rem 1.5rem; margin-bottom: 2rem; border-left: 3px solid; font-size: .95rem; }
.form-msg strong { display: block; margin-bottom: .3rem; }
.fm-ok { border-color: #6f9c5d; background: rgba(111,156,93,.08); }
.fm-err { border-color: #d4663a; background: rgba(212,102,58,.08); }
.form-req { color: var(--steel); font-size: .72rem; }
.contact-form .btn { align-self: flex-start; cursor: pointer; }

/* ---------- Legal ---------- */
.legal-body { max-width: 52rem; margin: 0; }
.legal-body h2 { font-size: 1.05rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; margin: 2.6rem 0 .8rem; color: var(--amber-hi); }
.legal-body p { color: var(--ink-dim); font-size: .96rem; }
.legal-review-note { margin-top: 3.5rem; color: var(--steel); border-left: 2px solid var(--amber); padding-left: 1.2rem; font-size: .78rem; }

/* ---------- Footer ---------- */
.site-foot { border-top: 1px solid var(--line); background: var(--bg-2); padding: 3.5rem var(--pad) 2rem; }
.foot-grid {
  max-width: var(--max); margin: 0 auto; display: grid;
  grid-template-columns: 2fr 1fr 1fr; gap: 3rem; padding-bottom: 2.5rem;
}
.foot-brand svg { color: var(--ink); margin-bottom: 1.1rem; }
.foot-brand .mono { color: var(--steel); font-size: .76rem; line-height: 1.9; }
.foot-nav, .foot-legal { display: flex; flex-direction: column; gap: .7rem; }
.foot-nav a, .foot-legal a { color: var(--ink-dim); font-size: .85rem; transition: color .25s; }
.foot-nav a:hover, .foot-legal a:hover { color: var(--amber-hi); }
.foot-line {
  max-width: var(--max); margin: 0 auto; display: flex; justify-content: space-between; gap: 1rem;
  border-top: 1px solid var(--line); padding-top: 1.5rem; flex-wrap: wrap;
}
.foot-line .mono { color: var(--steel); font-size: .7rem; }

/* ---------- Reveal animations ---------- */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .8s cubic-bezier(.16,1,.3,1), transform .8s cubic-bezier(.16,1,.3,1); }
[data-reveal].in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { [data-reveal] { opacity: 1; transform: none; } }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .site-nav {
    position: fixed; inset: 0; z-index: 90; background: rgba(12,14,17,.98);
    flex-direction: column; justify-content: center; align-items: flex-start;
    padding: 6rem var(--pad); gap: 1.6rem;
    transform: translateX(100%); transition: transform .4s cubic-bezier(.16,1,.3,1);
  }
  .site-nav.open { transform: none; }
  .site-nav a { font-size: 1.5rem; text-transform: none; letter-spacing: 0; color: var(--ink); }
  .nav-burger { display: block; z-index: 95; }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .row-item { grid-template-columns: 3rem 1fr 2rem; }
  .row-item p { grid-column: 2; }
  .prod-block, .prod-block.pb-flip { grid-template-columns: 1fr; gap: 2rem; }
  .prod-block.pb-flip .pb-head { order: 0; }
  .split { grid-template-columns: 1fr; gap: 1.5rem; }
  .split-a h2 { position: static; }
  .contact-grid { grid-template-columns: 1fr; }
  .flow-list li { grid-template-columns: 3.5rem 1fr; }
  .flow-list p { grid-column: 2; }
}
@media (max-width: 640px) {
  .stat-row, .std-grid, .ff-row { grid-template-columns: 1fr; }
  .hero-ticker { gap: 2.2rem; }
  .hero-scroll { display: none; }
  .row-item { grid-template-columns: 2.2rem 1fr; }
  .ri-arr { display: none; }
  .foot-grid { grid-template-columns: 1fr; gap: 2rem; }
}