/* Allezroma Landing — стили экрана home (инкремент 02).
 * Каркас страницы, hero, манифест, доктрина, футер. Сцены сервисов —
 * css/scenes.css. Компоненты по Дизайн.md §5; имена классов переносятся
 * фронтом в прод-styles.css. */

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(900px 480px at 85% -8%, color-mix(in oklab, var(--meta) 14%, transparent), transparent 60%),
    radial-gradient(700px 420px at -10% 22%, color-mix(in oklab, var(--svc-wt-2) 10%, transparent), transparent 55%),
    var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }

/* Нулевой svg для общих градиентов: display:none ломает url(#…)-ссылки */
.shared-defs { position: absolute; width: 0; height: 0; overflow: hidden; }

:focus-visible { outline: none; }

/* ============ Header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: 14px clamp(var(--container-gutter-phone), 4vw, 40px);
  border-bottom: 1px solid var(--border-soft);
  background: color-mix(in oklab, var(--bg) 72%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand-mark {
  width: 34px; height: 34px; flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--svc-wt-1), var(--accent) 55%, var(--svc-poll-2));
  display: grid; place-items: center;
  box-shadow: 0 4px 18px color-mix(in oklab, var(--accent) 40%, transparent);
}
.brand-name { font-family: var(--font-display); font-weight: 700; font-size: 18px; letter-spacing: var(--tracking-display); }
.brand-tagline { color: var(--muted); font-size: var(--text-sm); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.site-nav { display: flex; align-items: center; gap: var(--space-1); margin-left: auto; }
.nav-link {
  color: var(--fg-2);
  font-size: 14px; font-weight: 500;
  padding: 9px 14px; border-radius: var(--radius-md);
  transition: color var(--motion-fast) var(--ease-standard), background var(--motion-fast) var(--ease-standard);
}
.nav-link:hover { color: var(--fg); background: var(--surface); }
.nav-link:focus-visible { box-shadow: var(--focus-ring); }

/* ============ Language switcher ============ */
.lang { position: relative; flex-shrink: 0; }
.lang-trigger {
  display: inline-flex; align-items: center; gap: 8px;
  min-height: 44px; padding: 8px 12px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md);
  color: var(--fg); font: inherit; font-size: 14px; cursor: pointer;
  transition: border-color var(--motion-fast) var(--ease-standard), background var(--motion-fast) var(--ease-standard);
}
.lang-trigger:hover { border-color: var(--fg-2); background: var(--surface-warm); }
.lang-trigger:focus-visible { box-shadow: var(--focus-ring); }
.lang-current-flag { font-size: 17px; line-height: 1; }
.lang-current-name { font-weight: 600; }
.lang-caret { color: var(--muted); transition: transform var(--motion-fast) var(--ease-standard); }
.lang-trigger[aria-expanded="true"] .lang-caret { transform: rotate(180deg); }

.lang-menu {
  position: absolute; top: calc(100% + 8px); right: 0;
  min-width: 190px; padding: 6px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md);
  box-shadow: var(--elev-raised); z-index: 60;
}
.lang-menu[hidden] { display: none; }
.lang-option {
  display: flex; align-items: center; gap: 10px;
  min-height: 40px; padding: 8px 12px;
  border-radius: var(--radius-sm); cursor: pointer; color: var(--fg);
  transition: background var(--motion-fast) var(--ease-standard);
}
.lang-option:hover, .lang-option:focus { background: var(--surface-warm); }
.lang-option.is-active { background: var(--surface-warm); }
.lang-option .lang-flag { font-size: 18px; line-height: 1; }
.lang-option.is-active::after {
  content: ""; margin-left: auto;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--meta);
}

/* ============ Layout ============ */
.wrap {
  width: 100%; max-width: var(--container-max);
  margin: 0 auto; flex: 1;
  padding: 0 clamp(var(--container-gutter-phone), 4vw, var(--container-gutter-desktop));
}

/* ============ Hero ============ */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: var(--space-8);
  align-items: center;
  padding: clamp(48px, 8vh, 96px) 0 clamp(36px, 5vh, 64px);
}
.hero-kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: var(--text-xs);
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--meta);
  padding: 6px 12px; border-radius: var(--radius-pill);
  border: 1px solid color-mix(in oklab, var(--meta) 35%, transparent);
  background: color-mix(in oklab, var(--meta) 12%, transparent);
  margin-bottom: var(--space-5);
}
.hero-title {
  margin: 0 0 var(--space-4);
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(44px, 7vw, 76px);
  line-height: var(--leading-tight); letter-spacing: var(--tracking-display);
}
.hero-title .accent-word {
  background: linear-gradient(100deg, var(--svc-wt-1), var(--meta) 45%, var(--svc-poll-2));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  margin: 0 0 var(--space-6);
  color: var(--fg-2); font-size: var(--text-lg);
  line-height: 1.6; max-width: 56ch;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-body); font-weight: 600; font-size: var(--text-base);
  min-height: 46px; padding: 12px 22px;
  border-radius: var(--radius-md); border: 1px solid transparent; cursor: pointer;
  transition: background var(--motion-fast) var(--ease-standard),
              border-color var(--motion-fast) var(--ease-standard),
              transform var(--motion-fast) var(--ease-standard),
              box-shadow var(--motion-fast) var(--ease-standard);
}
.btn-primary { background: var(--accent); color: var(--accent-on); }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 10px 28px color-mix(in oklab, var(--accent) 35%, transparent); }
.btn-primary:active { background: var(--accent-active); transform: none; }
.btn-primary:focus-visible { box-shadow: var(--focus-ring); }
.btn-ghost { background: var(--surface); border-color: var(--border); color: var(--fg); }
.btn-ghost:hover { border-color: var(--fg-2); background: var(--surface-warm); }
.btn-ghost:focus-visible { box-shadow: var(--focus-ring); }

/* Созвездие сервисов — единственный иллюстративный приём hero */
.hero-constellation { position: relative; min-height: 340px; }
.constellation-svg { width: 100%; height: auto; display: block; overflow: visible; }
.constellation-svg .orbit { fill: none; stroke: var(--border); stroke-width: 1; stroke-dasharray: 3 6; }
.constellation-svg .orbit-core { fill: none; stroke: color-mix(in oklab, var(--accent) 55%, transparent); stroke-width: 1.2; }
.constellation-svg .link-line { stroke: var(--border); stroke-width: 1; opacity: .7; }
.constellation-svg .node { cursor: default; }
.constellation-svg .node-circle { filter: drop-shadow(0 0 10px currentColor); }
.constellation-svg .node-label {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.06em;
  fill: var(--muted); text-transform: uppercase;
}
.constellation-svg .core-glow {
  fill: url(#coreGlow);
  transform-box: fill-box;
  transform-origin: center;
  animation: corePulse 6s ease-in-out infinite;
}
@keyframes corePulse {
  0%, 100% { opacity: .55; transform: scale(1); }
  50% { opacity: .8; transform: scale(1.06); }
}
.constellation-svg .orbit-spin { transform-origin: 260px 210px; animation: orbitSpin 60s linear infinite; }
@keyframes orbitSpin { to { transform: rotate(360deg); } }

/* ============ Манифест (три факта вместо метрик) ============ */
.manifest { margin: 0 0 var(--section-y-desktop); }
.manifest-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
}
.manifest-item {
  display: flex; align-items: center; gap: var(--space-4);
  padding: var(--space-5) var(--space-5) var(--space-5) 0;
  min-width: 0;
}
.manifest-item + .manifest-item {
  border-left: 1px solid var(--border-soft);
  padding-left: var(--space-5);
}
.manifest-ic { color: var(--muted); flex-shrink: 0; display: inline-flex; }
.manifest-item p {
  margin: 0;
  color: var(--fg-2); font-size: var(--text-base); line-height: 1.5;
}

/* ============ Секции ============ */
.section { padding: var(--section-y-desktop) 0; }
#services .section-head { padding-top: var(--section-y-desktop); }
.section-head { margin-bottom: var(--space-8); }
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono); font-size: var(--text-xs);
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--meta);
  margin-bottom: var(--space-3);
}
.section-title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(28px, 4vw, var(--text-3xl));
  line-height: 1.15; letter-spacing: var(--tracking-display);
}
.section-lead { margin: 0; color: var(--fg-2); font-size: var(--text-lg); max-width: 62ch; }

/* ============ Доктрина ============ */
.doctrine-grid {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2) var(--space-8);
}
.principle {
  position: relative;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: var(--space-4);
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--border-soft);
}
.principle-num {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(38px, 4vw, 52px); line-height: 1;
  letter-spacing: var(--tracking-display);
  color: transparent;
  -webkit-text-stroke: 1px color-mix(in oklab, var(--fg) 30%, transparent);
  font-variant-numeric: tabular-nums;
}
.principle-body { min-width: 0; }
.principle-ic { display: inline-flex; margin-bottom: var(--space-3); color: var(--pc, var(--meta)); }
.principle--1 { --pc: var(--svc-wt-1); }
.principle--2 { --pc: var(--svc-poll-1); }
.principle--3 { --pc: var(--svc-thera-1); }
.principle--4 { --pc: var(--meta); }
.principle--5 { --pc: var(--svc-thera-2); }
.principle--6 { --pc: var(--svc-bots-1); }
.principle h3 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-display); font-weight: 700;
  font-size: var(--text-xl); letter-spacing: var(--tracking-display);
}
.principle p { margin: 0; color: var(--fg-2); font-size: var(--text-base); line-height: 1.6; overflow-wrap: break-word; }

/* ============ Footer ============ */
.site-footer {
  margin-top: var(--section-y-desktop);
  border-top: 1px solid var(--border-soft);
  padding: var(--space-6) clamp(var(--container-gutter-phone), 4vw, 40px);
}
.footer-inner {
  max-width: var(--container-max); margin: 0 auto;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: var(--space-4);
}
.footer-links { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-5); }
.footer-link {
  font-size: var(--text-sm); color: var(--muted);
  transition: color var(--motion-fast) var(--ease-standard);
}
.footer-link:hover { color: var(--fg); }
.footer-link:focus-visible { box-shadow: var(--focus-ring); border-radius: var(--radius-sm); }
.footer-copy { font-size: var(--text-sm); color: var(--muted); }

/* ============ Появление секций ============ */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .5s var(--ease-standard), transform .5s var(--ease-standard); }
.reveal.is-visible { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; transition: none; }

/* ============ Адаптив ============ */
@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; }
  .hero-constellation { max-width: 420px; margin: 0 auto; }
  .manifest-row { grid-template-columns: 1fr; }
  .manifest-item + .manifest-item { border-left: none; border-top: 1px solid var(--border-soft); padding-left: 0; }
  .manifest-item { padding: var(--space-4) 0; }
}

@media (max-width: 768px) {
  .section { padding: var(--section-y-tablet) 0; }
  .site-header { gap: var(--space-2); }
  .nav-link { padding: 8px 10px; font-size: 13px; }
  .lang-current-name { display: none; }
  .doctrine-grid { grid-template-columns: 1fr; }
  .brand-tagline { display: none; }
}

@media (max-width: 560px) {
  .section { padding: var(--section-y-phone) 0; }
  #services .section-head { padding-top: var(--section-y-tablet); }
  .hero-actions .btn { flex: 1 1 auto; }
  .principle { grid-template-columns: 48px minmax(0, 1fr); gap: var(--space-3); }
  .principle-num { font-size: 34px; }
  .manifest-item { gap: var(--space-3); }
}

/* ============ Reduced motion ============ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .core-glow, .orbit-spin { animation: none; }
  .btn, .nav-link, .lang-trigger, .footer-link { transition: none; }
  .btn-primary:hover { transform: none; }
}