/* Ворон · Нера М. — общая дизайн-система для всех страниц сайта */

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }

:root {
  --bg: #0b0c0e;
  --text: #e7e2d8;
  --heading: #f2ede4;
  --heading-soft: #efe9df;
  --accent: #b23a3a;
  --accent-glow: rgba(178, 58, 58, 0.35);
  --muted: #8a8479;
  --muted-2: #6f695f;
  --muted-3: #5f5a51;
  --body-1: #c9c3b7;
  --body-2: #c1bbaf;
  --body-3: #cfc9bd;
  --body-4: #d4cec2;
  --body-5: #c4beb2;
  --line: rgba(231, 226, 216, 0.1);
  --line-2: rgba(231, 226, 216, 0.14);
  --serif-display: 'Cormorant Garamond', Georgia, serif;
  --serif-body: 'EB Garamond', Georgia, serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--serif-body);
  -webkit-font-smoothing: antialiased;
  position: relative;
}

::selection { background: rgba(178, 58, 58, 0.35); color: #fff; }
a { color: inherit; }

@keyframes riseIn {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}

/* film grain, fixed over the whole page */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.5;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}

/* soft red glow + vignette, fixed over the whole page */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(120% 90% at 50% -10%, rgba(178, 58, 58, 0.08), transparent 55%),
    radial-gradient(140% 120% at 50% 110%, rgba(0, 0, 0, 0.6), transparent 60%);
}

.page { position: relative; min-height: 100vh; }

/* ---------- header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: linear-gradient(180deg, rgba(11, 12, 14, 0.96), rgba(11, 12, 14, 0.7));
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-nav {
  position: relative;
  max-width: 1280px;
  margin: 0 auto;
  padding: 20px 40px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
}
.nav-toggle-input { display: none; }
.nav-toggle-btn { display: none; }
.brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
  text-decoration: none;
}
.brand-mark {
  font-family: var(--serif-display);
  font-weight: 600;
  font-size: 34px;
  letter-spacing: 0.14em;
  color: var(--heading-soft);
  line-height: 1;
}
.brand-author {
  font-family: var(--serif-body);
  font-size: 15px;
  color: var(--muted);
}
.nav-links {
  display: flex;
  align-items: baseline;
  gap: 28px;
  flex-wrap: wrap;
}
.nav-links a {
  font-family: var(--serif-body);
  font-size: 16px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  padding-bottom: 4px;
  color: var(--muted);
  border-bottom: 1px solid transparent;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--heading-soft); }
.nav-links a[aria-current="page"] {
  color: var(--heading-soft);
  border-bottom: 1px solid var(--accent);
}

/* ---------- footer ---------- */
.site-footer {
  position: relative;
  z-index: 10;
  border-top: 1px solid var(--line);
}
.site-footer .wrap {
  max-width: 1280px;
  margin: 0 auto;
  padding: 30px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-brand {
  font-family: var(--serif-display);
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
}
.footer-note {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted-3);
}

/* ---------- shared type helpers ---------- */
.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
}
.divider-rule {
  width: 72px;
  height: 1px;
  background: var(--accent);
  margin: 32px 0;
}
main { position: relative; z-index: 10; }

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--serif-body);
  font-size: 16px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 14px 28px;
}
.btn-primary {
  color: #fff;
  background: var(--accent);
  box-shadow: 0 8px 22px var(--accent-glow);
}
.btn-primary:hover { background: #9c3232; }
.btn-outline {
  color: #d8d2c6;
  border: 1px solid var(--line-2);
}
.btn-outline:hover { border-color: rgba(178, 58, 58, 0.5); color: var(--heading-soft); }

/* ---------- page header block (used on inner pages) ---------- */
.page-head { max-width: 1000px; margin: 0 auto; padding: 88px 32px 20px; }
.page-head .eyebrow { margin-bottom: 14px; }
.page-head h1 {
  font-family: var(--serif-display);
  font-weight: 700;
  font-size: 64px;
  line-height: 1;
  color: var(--heading);
}

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .hero-grid, .about-grid { grid-template-columns: 1fr !important; }
  .hero-grid > div:last-child { max-width: 420px; }
}

@media (max-width: 760px) {
  .site-nav { padding: 14px 20px; gap: 14px; }
  .brand-mark { font-size: 26px; }
  .page-head { padding: 56px 20px 8px; }
  .page-head h1 { font-size: 40px; }
  main { padding-left: 20px !important; padding-right: 20px !important; }

  .nav-toggle-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-end;
    gap: 5px;
    width: 28px;
    height: 22px;
    cursor: pointer;
    flex: none;
  }
  .nav-toggle-btn span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--body-1);
    transition: transform 0.25s ease, opacity 0.2s ease, width 0.25s ease;
  }
  .nav-toggle-input:checked ~ .nav-toggle-btn span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle-input:checked ~ .nav-toggle-btn span:nth-child(2) { opacity: 0; width: 0; }
  .nav-toggle-input:checked ~ .nav-toggle-btn span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 40px rgba(0, 0, 0, 0.45);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .nav-toggle-input:checked ~ .nav-links { max-height: 420px; }
  .nav-links a {
    padding: 16px 20px;
    border-bottom: 1px solid var(--line);
    font-size: 15px;
  }
  .nav-links a[aria-current="page"] { border-bottom: 1px solid var(--line); box-shadow: inset 2px 0 0 var(--accent); }
}