/* ============================================================
   ВИДЕО — объединённая страница (Монтаж / Облако / Аналитика)
   Паттерн ОПС: якорная суб-навигация + scroll-spy.
   Палитра: navy #060b18…#0a3060, accent #4da6ff,
   суб-акценты: облако #22b8cf (cyan), аналитика #a78bfa (violet).
   ============================================================ */

/* ─── Hero ─── */
.vd-hero {
  position: relative;
  padding: calc(var(--header-height, 68px) + var(--space-14)) 0 var(--space-16);
  background: linear-gradient(135deg, #060b18 0%, #0a1628 40%, #0d2040 70%, #0a3060 100%);
  color: var(--color-white);
  overflow: hidden;
}
.vd-hero__video {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.18;
  mix-blend-mode: luminosity;
  pointer-events: none;
  z-index: 0;
}
.vd-hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 55% 70% at 80% 40%, rgba(10,108,255,0.16) 0%, transparent 60%),
    radial-gradient(ellipse 40% 50% at 12% 80%, rgba(77,166,255,0.08) 0%, transparent 55%);
  z-index: 1;
}
.vd-hero > .container { position: relative; z-index: 2; }
.vd-hero__eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: var(--font-size-xs); font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: #7ec8f7; background: rgba(10,108,255,0.14);
  border: 1px solid rgba(77,166,255,0.35); border-radius: 999px;
  padding: var(--space-2) var(--space-4); margin-bottom: var(--space-5);
}
.vd-hero__title {
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.1; font-weight: 800;
  color: var(--color-white); margin-bottom: var(--space-5);
}
.vd-hero__title span { color: #4da6ff; }
.vd-hero__desc {
  font-size: var(--font-size-lg); color: rgba(255,255,255,0.7);
  max-width: 640px; line-height: 1.6; margin-bottom: var(--space-8);
}
.vd-hero__actions { display: flex; gap: var(--space-4); flex-wrap: wrap; margin-bottom: var(--space-10); }
.vd-hero__stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); max-width: 760px; }
.vd-hero__stat-val { font-size: var(--font-size-2xl); font-weight: 800; color: var(--color-white); }
.vd-hero__stat-lbl { font-size: var(--font-size-sm); color: rgba(255,255,255,0.55); margin-top: 2px; }
@media (max-width: 640px) {
  .vd-hero__stats { grid-template-columns: repeat(2, 1fr); gap: var(--space-5); }
}

/* ─── Sticky sub-nav (scroll-spy) ─── */
.vd-subnav {
  background: var(--color-white); border-bottom: 1px solid var(--color-gray-100);
  position: sticky; top: var(--header-height, 68px); z-index: 50;
  transition: top 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
#site-top.header--hidden ~ main .vd-subnav { top: 0; }
.vd-subnav__inner { display: flex; align-items: center; height: 52px; overflow-x: auto; }
.vd-subnav__label {
  font-size: var(--font-size-xs); font-weight: 700; color: var(--color-gray-400);
  text-transform: uppercase; letter-spacing: 0.08em; flex-shrink: 0;
  padding-right: var(--space-4); margin-right: var(--space-3);
  border-right: 2px solid var(--color-gray-100);
}
.vd-subnav__links { display: flex; gap: 0; }
.vd-subnav__link {
  display: inline-flex; align-items: center; padding: 0 var(--space-5); height: 52px;
  font-size: var(--font-size-sm); font-weight: 500; color: var(--color-gray-500);
  text-decoration: none; border-bottom: 2px solid transparent; cursor: pointer;
  white-space: nowrap; transition: color 0.2s, border-color 0.2s;
}
.vd-subnav__link:hover { color: var(--color-gray-900); }
.vd-subnav__link--active { color: #2f7fd6; border-bottom-color: #4da6ff; font-weight: 600; }
@media (max-width: 480px) {
  .vd-subnav__label { display: none; }
  .vd-subnav__link { padding: 0 var(--space-3); font-size: var(--font-size-xs); }
}

/* ─── Anchored blocks ─── */
.vd-block { scroll-margin-top: 128px; }
.vd-block--tint { background: var(--color-gray-50); }

/* ═══ МОНТАЖ: showcase (камера в центре + фичи по бокам) ═══ */
.vd-showcase {
  display: grid;
  grid-template-columns: 1fr minmax(240px, 340px) 1fr;
  gap: var(--space-8);
  align-items: center;
  margin-bottom: var(--space-14);
}
.vd-showcase__col { display: flex; flex-direction: column; gap: var(--space-7); }
.vd-showcase__item { display: flex; gap: var(--space-3); align-items: flex-start; }
.vd-showcase__col--right .vd-showcase__item { flex-direction: row; }
.vd-showcase__icon {
  width: 40px; height: 40px; min-width: 40px;
  border-radius: var(--radius-lg);
  background: rgba(77,166,255,0.1); color: #2f7fd6;
  display: flex; align-items: center; justify-content: center;
}
.vd-showcase__title { font-size: var(--font-size-base); font-weight: 700; color: var(--color-gray-900); margin-bottom: 2px; }
.vd-showcase__desc { font-size: var(--font-size-sm); color: var(--color-gray-500); line-height: 1.5; }
.vd-showcase__center { position: relative; text-align: center; }
.vd-showcase__glow {
  position: absolute; inset: 10% 5%;
  background: radial-gradient(ellipse at center, rgba(77,166,255,0.18) 0%, transparent 70%);
  filter: blur(10px);
}
.vd-showcase__img { position: relative; width: 100%; max-width: 320px; height: auto; }
@media (max-width: 900px) {
  .vd-showcase { grid-template-columns: 1fr; gap: var(--space-8); }
  .vd-showcase__center { order: -1; }
  .vd-showcase__img { max-width: 240px; }
}

/* ═══ Шаги процесса (горизонтальный ряд, как на ОПС) ═══ */
.vd-subtitle {
  text-align: center;
  font-size: var(--font-size-xl); font-weight: 700; color: var(--color-gray-900);
  margin: 0 0 var(--space-8);
}
.vd-steps-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}
.vd-step-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  transition: box-shadow 0.2s, transform 0.2s;
}
.vd-block--tint .vd-step-card { background: var(--color-white); }
.vd-step-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.vd-step-card__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-3); }
.vd-step-card__num {
  width: 30px; height: 30px; border-radius: 50%;
  background: rgba(77,166,255,0.12); color: #2f7fd6;
  font-size: var(--font-size-sm); font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.vd-step-card__time { font-size: var(--font-size-xs); font-weight: 600; color: var(--color-gray-400); }
.vd-step-card__title { font-size: var(--font-size-base); font-weight: 700; color: var(--color-gray-900); margin-bottom: var(--space-1); }
.vd-step-card__desc { font-size: var(--font-size-sm); color: var(--color-gray-500); line-height: 1.5; }
@media (max-width: 900px) { .vd-steps-row { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .vd-steps-row { grid-template-columns: 1fr; } }

/* ═══ Типы объектов — компактные чипы ═══ */
.vd-objects {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  max-width: 880px;
  margin: 0 auto;
}
.vd-object {
  display: flex; align-items: center; gap: var(--space-3);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm); font-weight: 600; color: var(--color-gray-700);
}
.vd-object svg { flex-shrink: 0; color: #2f7fd6; }
@media (max-width: 760px) { .vd-objects { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .vd-objects { grid-template-columns: 1fr; } }

/* ═══ ОБЛАКО ═══ */
.vd-cloud-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--space-12);
  align-items: center;
  margin-bottom: var(--space-12);
}
@media (max-width: 900px) { .vd-cloud-grid { grid-template-columns: 1fr; gap: var(--space-8); } }
.vd-cloud-benefits { display: flex; flex-direction: column; gap: var(--space-5); }
.vd-cloud-benefit { display: flex; gap: var(--space-4); align-items: flex-start; }
.vd-cloud-benefit__icon {
  width: 42px; height: 42px; min-width: 42px;
  border-radius: var(--radius-lg);
  background: rgba(34,184,207,0.12); color: #0e94a8;
  display: flex; align-items: center; justify-content: center;
}
.vd-cloud-benefit__title { font-size: var(--font-size-base); font-weight: 700; color: var(--color-gray-900); margin-bottom: 2px; }
.vd-cloud-benefit__desc { font-size: var(--font-size-sm); color: var(--color-gray-500); line-height: 1.55; }

/* Диаграмма: камеры → облако */
.vd-diagram {
  background: var(--color-white);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-2xl);
  padding: var(--space-7);
  box-shadow: var(--shadow-sm);
}
.vd-diagram__row { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-4); }
.vd-diagram__icon {
  width: 38px; height: 38px; min-width: 38px;
  border-radius: var(--radius-lg);
  background: var(--color-gray-50); border: 1px solid var(--color-gray-100);
  color: var(--color-gray-500);
  display: flex; align-items: center; justify-content: center;
}
.vd-diagram__line {
  flex: 1; height: 2px;
  background: repeating-linear-gradient(90deg, #22b8cf 0 6px, transparent 6px 12px);
  opacity: 0.5;
}
.vd-diagram__label { font-size: var(--font-size-sm); font-weight: 600; color: var(--color-gray-600); white-space: nowrap; }
.vd-diagram__cloud {
  display: flex; align-items: center; gap: var(--space-4);
  margin-top: var(--space-6);
  background: linear-gradient(135deg, rgba(34,184,207,0.1) 0%, rgba(10,108,255,0.08) 100%);
  border: 1px solid rgba(34,184,207,0.3);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
}
.vd-diagram__cloud-icon { color: #0e94a8; display: flex; }
.vd-diagram__cloud-text { font-size: var(--font-size-base); font-weight: 700; color: var(--color-gray-900); }
.vd-diagram__cloud-sub { font-size: var(--font-size-xs); color: var(--color-gray-500); margin-top: 2px; }

/* Кому подходит облако — компактные карточки */
.vd-cases {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}
.vd-case {
  background: var(--color-white);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  transition: box-shadow 0.2s, transform 0.2s;
}
.vd-case:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.vd-case__icon {
  width: 38px; height: 38px;
  border-radius: var(--radius-lg);
  background: rgba(34,184,207,0.1); color: #0e94a8;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-3);
}
.vd-case__title { font-size: var(--font-size-sm); font-weight: 700; color: var(--color-gray-900); margin-bottom: var(--space-1); }
.vd-case__desc { font-size: var(--font-size-xs); color: var(--color-gray-500); line-height: 1.5; }
@media (max-width: 900px) { .vd-cases { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .vd-cases { grid-template-columns: 1fr; } }

/* ═══ АНАЛИТИКА (тёмный блок) ═══ */
.vd-ai {
  background: linear-gradient(135deg, #0a0a1a 0%, #131332 45%, #1a1440 80%, #0d1030 100%);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}
.vd-ai::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 50% 60% at 75% 25%, rgba(167,139,250,0.12) 0%, transparent 55%);
}
.vd-ai > .container { position: relative; z-index: 1; }
.vd-ai .section-header__title { color: var(--color-white); }
.vd-ai .section-header__desc { color: rgba(255,255,255,0.6); }
.vd-ai .section-header__eyebrow { color: #a78bfa; }

.vd-ai-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  max-width: 820px; margin: 0 auto var(--space-12);
}
.vd-ai-stat {
  text-align: center;
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.09);
  border-radius: var(--radius-xl); padding: var(--space-4);
}
.vd-ai-stat__val { font-size: var(--font-size-xl); font-weight: 800; color: #a78bfa; }
.vd-ai-stat__lbl { font-size: var(--font-size-xs); color: rgba(255,255,255,0.5); margin-top: 2px; }
@media (max-width: 640px) { .vd-ai-stats { grid-template-columns: repeat(2, 1fr); } }

.vd-algos {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}
.vd-algo {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}
.vd-algo:hover { background: rgba(255,255,255,0.07); border-color: rgba(167,139,250,0.35); transform: translateY(-2px); }
.vd-algo__icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-lg);
  background: rgba(167,139,250,0.14); color: #c4b0ff;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-3);
}
.vd-algo__title { font-size: var(--font-size-base); font-weight: 700; color: var(--color-white); margin-bottom: var(--space-1); }
.vd-algo__desc { font-size: var(--font-size-sm); color: rgba(255,255,255,0.55); line-height: 1.55; }
@media (max-width: 900px) { .vd-algos { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .vd-algos { grid-template-columns: 1fr; } }

/* Как работает — 3 слим-шага */
.vd-ai-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
.vd-ai-step {
  display: flex; flex-direction: column; gap: var(--space-2);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
}
.vd-ai-step__head { display: flex; align-items: center; gap: var(--space-3); }
.vd-ai-step__num {
  width: 28px; height: 28px; min-width: 28px; border-radius: 50%;
  background: rgba(167,139,250,0.16); color: #c4b0ff;
  font-size: var(--font-size-sm); font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.vd-ai-step__title { font-size: var(--font-size-sm); font-weight: 700; color: var(--color-white); }
.vd-ai-step__badge {
  display: inline-flex; align-items: center; gap: 6px;
  align-self: flex-start;
  font-size: var(--font-size-xs); font-weight: 600; color: #c4b0ff;
  background: rgba(167,139,250,0.1); border: 1px solid rgba(167,139,250,0.25);
  border-radius: 999px; padding: 3px 10px;
}
@media (max-width: 760px) { .vd-ai-steps { grid-template-columns: 1fr; } }

/* ═══ КАЛЬКУЛЯТОР: табы ═══ */
.vd-calc-section { background: var(--color-gray-50); scroll-margin-top: 128px; padding-top: var(--space-16); }
.vd-calc-tabs {
  display: flex; justify-content: center; gap: var(--space-2);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}
.vd-calc-tab {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  min-height: 44px;
  border-radius: 999px;
  border: 1px solid var(--color-gray-200);
  background: var(--color-white);
  font-size: var(--font-size-sm); font-weight: 600; color: var(--color-gray-600);
  cursor: pointer;
  transition: all 0.2s;
}
.vd-calc-tab:hover { border-color: #4da6ff; color: #2f7fd6; }
.vd-calc-tab--active { background: #0a3060; border-color: #0a3060; color: #fff; }
.vd-calc-tab--active:hover { color: #fff; }
.vd-calc-panel { display: none; }
.vd-calc-panel--active { display: block; }
/* Внутри секции калькулятора сам .vcalc не добавляет лишний фон */
.vd-calc-section .vcalc { background: transparent; padding-top: 0; }

/* prefers-reduced-motion: без transform-анимаций */
@media (prefers-reduced-motion: reduce) {
  .vd-step-card:hover, .vd-case:hover, .vd-algo:hover { transform: none; }
}

/* ═══ FAQ CTA-карточка — в палитре секции AI-аналитики (.vd-ai) ═══
   Тот же тёмный градиент + фиолетовое radial-свечение, что и у секции
   аналитики: карточка перестаёт спорить синим с тёмным низом страницы.
   video.css подключён только на videocam.html — на других страницах
   FAQ-карточка остаётся брендово-синей. */
.faq-cta-card {
  background:
    radial-gradient(ellipse 50% 60% at 75% 25%, rgba(167,139,250,0.12) 0%, transparent 55%),
    linear-gradient(135deg, #0a0a1a 0%, #131332 45%, #1a1440 80%, #0d1030 100%);
  border: 1px solid rgba(167,139,250,0.18);
}
.faq-cta-card__icon { background: rgba(167,139,250,0.16); color: #a78bfa; }