/* OneVibe AI — корпоративный лендинг, графитовая палитра */

:root {
  --graphite-950: #141414;
  --graphite-900: #1c1c1e;
  --graphite-800: #2a2a2c;
  --graphite-700: #3a3a3d;
  --graphite-600: #52525a;
  --graphite-500: #6b6b73;
  --graphite-300: #a8a8b0;
  --graphite-100: #e8e8ec;
  --white: #f5f5f7;
  --accent: #c9a227;
  --accent-dim: #9a7b1a;
  --accent-glow: rgba(201, 162, 39, 0.15);
  --link: #e8d48b;
  --link-hover: #f8ecc0;
  --border: rgba(255, 255, 255, 0.08);
  --font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --max-width: 1120px;
  --radius: 4px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--graphite-100);
  background: var(--graphite-950);
  -webkit-font-smoothing: antialiased;
}

a:not(.btn):not(.logo):not(.cabinet-nav__link):link,
a:not(.btn):not(.logo):not(.cabinet-nav__link):visited {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(232, 212, 139, 0.55);
}

a:not(.btn):not(.logo):not(.cabinet-nav__link):hover,
a:not(.btn):not(.logo):not(.cabinet-nav__link):focus-visible {
  color: var(--link-hover);
  text-decoration-color: currentColor;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.text-accent {
  color: var(--accent);
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(20, 20, 20, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.header__inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 64px;
}

.header__nav {
  display: flex;
  gap: 20px;
  margin-left: auto;
  margin-right: 16px;
}

.header__nav a {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--graphite-300);
}

.header__nav a:hover {
  color: var(--accent);
}

.logo {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--white);
  text-transform: uppercase;
}

.logo__accent {
  color: var(--accent);
  font-weight: 700;
}

.header__actions {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-left: auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-decoration: none;
  text-transform: uppercase;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.btn--primary {
  background: var(--accent);
  color: var(--graphite-950);
  border-color: var(--accent);
}

.btn--primary:hover {
  background: var(--accent-dim);
  border-color: var(--accent-dim);
}

.btn--outline {
  background: transparent;
  color: var(--white);
  border-color: var(--graphite-600);
}

.btn--outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn--ghost {
  background: transparent;
  color: var(--graphite-300);
  border-color: transparent;
}

.btn--ghost:hover {
  color: var(--white);
}

.btn--lg {
  padding: 14px 28px;
  font-size: 0.8125rem;
}

/* Hero */
.hero {
  padding: 80px 0 72px;
  background:
    linear-gradient(180deg, var(--graphite-900) 0%, var(--graphite-950) 100%);
  border-bottom: 1px solid var(--border);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 48px;
  align-items: start;
}

.eyebrow {
  margin: 0 0 16px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero__title {
  margin: 0 0 24px;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--white);
}

.hero__lead {
  margin: 0 0 32px;
  max-width: 52ch;
  font-size: 1.0625rem;
  color: var(--graphite-300);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero__panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.metric-card {
  padding: 20px 24px;
  background: var(--graphite-800);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.metric-card--accent {
  border-color: rgba(201, 162, 39, 0.35);
  background: linear-gradient(135deg, var(--graphite-800), rgba(201, 162, 39, 0.08));
}

.metric-card__value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--white);
}

.metric-card--accent .metric-card__value {
  color: var(--accent);
}

.metric-card__label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--graphite-500);
}

/* Sections */
.services {
  padding: 72px 0;
}

.section-head {
  margin-bottom: 48px;
  max-width: 640px;
}

.section-head__title {
  margin: 0 0 12px;
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: -0.02em;
}

.section-head__title--center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-head__desc {
  margin: 0;
  color: var(--graphite-300);
}

/* Service cards */
.service-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 32px;
  padding: 40px;
  margin-bottom: 24px;
  background: var(--graphite-900);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.service-card--featured {
  border-left: 3px solid var(--accent);
  background: linear-gradient(90deg, var(--accent-glow), transparent 40%), var(--graphite-900);
}

.service-card__badge {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--graphite-700);
  letter-spacing: -0.04em;
}

.service-card--featured .service-card__badge {
  color: var(--accent);
}

.service-card__title {
  margin: 0 0 4px;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--white);
}

.service-card__subtitle {
  margin: 0 0 20px;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--graphite-500);
}

.service-card__intro {
  margin: 0 0 28px;
  color: var(--graphite-300);
  max-width: 72ch;
}

.capabilities__title,
.audience__title {
  margin: 0 0 12px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

.capabilities__list {
  margin: 0 0 28px;
  padding-left: 0;
  list-style: none;
}

.capabilities__list li {
  position: relative;
  padding: 12px 0 12px 20px;
  border-bottom: 1px solid var(--border);
  color: var(--graphite-300);
}

.capabilities__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.35em;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 1px;
}

.capabilities__list li strong {
  color: var(--white);
  font-weight: 600;
}

.audience p {
  margin: 0;
  color: var(--graphite-300);
  max-width: 68ch;
}

.service-card__cta {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.service-card__price {
  margin: 0 0 16px;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent);
}

.tariffs {
  padding: 0 0 72px;
}

.tariff-grid--landing {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.tariffs .tariff-card {
  padding: 24px;
  background: var(--graphite-900);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tariffs .tariff-card__name {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--white);
}

.tariffs .tariff-card__price {
  color: var(--accent);
  font-size: 1.25rem;
  font-weight: 600;
}

.tariffs .tariff-card__features {
  margin: 0;
  padding-left: 18px;
  font-size: 0.85rem;
  color: var(--graphite-300);
  flex: 1;
}

.tariffs .tariff-card__features .is-option,
.tariff-card__features .is-option {
  color: var(--accent);
}

.tariffs__note {
  margin: 24px 0 0;
  text-align: center;
  color: var(--graphite-500);
  font-size: 0.9375rem;
}

/* Principles */
.principles {
  padding: 64px 0;
  background: var(--graphite-900);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.principles__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 40px;
}

.principle {
  padding: 28px;
  background: var(--graphite-800);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.principle__num {
  display: block;
  margin-bottom: 12px;
  font-size: 1.25rem;
  color: var(--accent);
}

.principle h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
}

.principle p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--graphite-500);
}

/* CTA */
.cta-block {
  padding: 72px 0;
}

.cta-block__inner {
  text-align: center;
  padding: 48px;
  background: var(--graphite-800);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.cta-block__inner h2 {
  margin: 0 0 12px;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--white);
}

.cta-block__inner p {
  margin: 0 0 28px;
  color: var(--graphite-500);
}

.cta-block__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

/* Footer */
.footer {
  padding: 24px 0;
  border-top: 1px solid var(--border);
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.8125rem;
  color: var(--graphite-500);
}

.footer__brand {
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--graphite-300);
}

.footer__copy a:link,
.footer__copy a:visited {
  color: var(--link);
  text-underline-offset: 3px;
}

.footer__copy a:hover {
  color: var(--link-hover);
}

/* Responsive */
@media (max-width: 900px) {
  .hero__grid {
    grid-template-columns: 1fr;
  }

  .hero__panel {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .metric-card {
    flex: 1 1 140px;
  }

  .principles__grid {
    grid-template-columns: 1fr;
  }

  .service-card {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 28px;
  }
}

@media (max-width: 600px) {
  .header__nav {
    display: none;
  }

  .header__actions .btn--ghost {
    display: none;
  }

  .hero {
    padding: 48px 0;
  }

  .hero__cta,
  .cta-block__buttons {
    flex-direction: column;
  }

  .btn--lg {
    width: 100%;
  }
}