/* ============================================================
   AVALUX — автомобильный центр полного цикла
   Design system
   ============================================================ */

:root {
  /* Surfaces — graphite / black metal */
  --bg:        #0d0d0f;
  --bg-2:      #111114;
  --panel:     #16161a;
  --panel-2:   #1c1c21;
  --line:      #2a2a31;
  --line-soft: #1f1f25;

  /* Light contrast section */
  --bone:      #f3f1ec;
  --bone-2:    #e9e6df;
  --ink:       #16161a;

  /* Text */
  --fg:        #f4f3f0;
  --fg-soft:   #b9b9c0;
  --fg-mute:   #7d7d86;

  /* Accent — красный (отсылка к Красной Сосне) */
  --accent:        oklch(0.60 0.205 26);
  --accent-bright: oklch(0.66 0.205 26);
  --accent-deep:   oklch(0.48 0.17 26);
  --accent-tint:   oklch(0.60 0.205 26 / 0.12);

  /* Type */
  --font-display: "Oswald", "Arial Narrow", sans-serif;
  --font-body:    "Manrope", system-ui, sans-serif;
  --font-mono:    "Space Mono", ui-monospace, monospace;

  /* Layout */
  --maxw: 1280px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 4px;

  --shadow: 0 30px 80px -40px rgba(0,0,0,0.9);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* ---------- typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.02;
  margin: 0;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent-bright);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.kicker::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--accent);
}
.kicker.center::before { display: none; }

.section {
  padding: clamp(72px, 10vw, 140px) 0;
  position: relative;
}
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: clamp(36px, 5vw, 64px);
  flex-wrap: wrap;
}
@media (max-width: 1040px) {
  .section-head { flex-direction: column; align-items: flex-start; gap: 16px; }
  .section-head p { max-width: 52ch; }
}
.section-head h2 {
  font-size: clamp(34px, 5.2vw, 68px);
  text-transform: uppercase;
}
.section-head p {
  max-width: 38ch;
  color: var(--fg-soft);
  margin: 0;
  font-size: 16px;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 28px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: transform .25s cubic-bezier(.2,.8,.2,1), background .25s, color .25s, border-color .25s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-bright); transform: translateY(-2px); }
.btn--ghost { border-color: var(--line); color: var(--fg); background: transparent; }
.btn--ghost:hover { border-color: var(--fg-soft); background: rgba(255,255,255,0.04); }
.btn--light { background: var(--ink); color: var(--bone); }
.btn--light:hover { transform: translateY(-2px); }
.btn .arr { transition: transform .25s; }
.btn:hover .arr { transform: translate(3px,-3px); }

/* ---------- placeholder imagery ---------- */
.ph {
  position: relative;
  background-color: var(--panel);
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(255,255,255,0.035) 0 1px,
    transparent 1px 11px
  );
  border: 1px solid var(--line);
  overflow: hidden;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}
.ph::after {
  content: attr(data-label);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-mute);
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: rgba(0,0,0,0.35);
}
.ph.light {
  background-color: var(--bone-2);
  background-image: repeating-linear-gradient(-45deg, rgba(0,0,0,0.04) 0 1px, transparent 1px 11px);
  border-color: rgba(0,0,0,0.1);
}
.ph.light::after { color: rgba(0,0,0,0.4); border-color: rgba(0,0,0,0.15); background: rgba(255,255,255,0.4); }

/* ---------- reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.2,.8,.2,1);
}
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}