/* ============ Tokens ============ */
:root {
  /* Primitive palette */
  --color-black-900: #06070a;
  --color-black-800: #0b0c10;
  --color-black-700: #14161c;
  --color-silver-100: #f5f5f7;
  --color-silver-300: #c7c9d1;
  --color-silver-500: #8a8d99;
  --color-silver-700: #2c2e36;
  --color-red-500: #e1261c;
  --color-red-400: #ff6a3d;
  --color-red-700: #8c0f09;

  /* Semantic */
  --bg-page: var(--color-black-900);
  --bg-surface: var(--color-black-800);
  --bg-surface-raised: rgba(20, 22, 28, 0.3);
  --text-primary: var(--color-silver-100);
  --text-secondary: var(--color-silver-300);
  --text-muted: var(--color-silver-500);
  --border-subtle: var(--color-silver-700);
  --brand-accent: var(--color-red-500);
  --brand-accent-hover: var(--color-red-400);
  --focus-ring: var(--color-red-400);

  /* Per-platform brand colors */
  --brand-telegram: #229ED9;
  --brand-whatsapp: #25D366;
  --brand-instagram-start: #f58529;
  --brand-instagram-mid: #dd2a7b;
  --brand-instagram-end: #8134af;
  --brand-linkedin: #0A66C2;
  --brand-facebook: #1877F2;
  --brand-youtube: #FFD400;

  /* Fonts */
  --font-display: 'Sora', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;

  /* Type scale */
  --fs-hero: clamp(2.75rem, 7vw + 1rem, 6.5rem);
  --fs-h1: clamp(2rem, 3vw + 1rem, 3rem);
  --fs-stat: clamp(2.5rem, 4vw + 1rem, 4.25rem);
  --fs-body-lg: 1.125rem;
  --fs-body: 1rem;
  --fs-small: 0.875rem;

  --lh-tight: 1.08;
  --lh-normal: 1.55;
  --lh-relaxed: 1.7;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;
  --space-32: 8rem;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  --container-max: 1200px;
  --container-pad: var(--space-4);
}

@media (min-width: 900px) {
  :root { --container-pad: var(--space-8); }
}

/* ============ Reset ============ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg-page);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
ul[role="list"] { list-style: none; margin: 0; padding: 0; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--brand-accent);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  z-index: 1000;
}
.skip-link:focus { left: 0; }

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============ Eyebrow / section title ============ */
.eyebrow {
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brand-accent-hover);
  margin: 0 0 var(--space-4);
}
.eyebrow--center { text-align: center; }

.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-h1);
  line-height: var(--lh-tight);
  color: var(--text-primary);
  margin: 0 0 var(--space-12);
  max-width: 36ch;
}
.section-title--center { text-align: center; margin-inline: auto; }

.subsection-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--text-primary);
  margin: var(--space-16) 0 var(--space-6);
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-weight: 600;
  border-radius: var(--radius-pill);
  padding: var(--space-3) var(--space-6);
  font-size: var(--fs-body);
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.btn--sm { padding: var(--space-2) var(--space-4); font-size: var(--fs-small); }
.btn--lg { padding: var(--space-4) var(--space-8); font-size: var(--fs-body-lg); }
.btn--accent {
  background: linear-gradient(135deg, var(--color-red-500), var(--color-red-400));
  color: #fff;
  box-shadow: 0 8px 24px -8px rgba(225, 38, 28, 0.6);
}
.btn--accent:hover { transform: translateY(-2px); }
.btn--ghost {
  background: rgba(245, 245, 247, 0.06);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(6px);
}
.btn--ghost:hover { border-color: var(--text-secondary); transform: translateY(-2px); }

/* ============ Header ============ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: var(--space-4) 0;
  background: transparent;
  transition: background 0.3s ease, backdrop-filter 0.3s ease, box-shadow 0.3s ease;
}
.site-header--scrolled {
  background: rgba(6, 7, 10, 0.8);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(245,245,247,0.08);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.logo-mark { display: inline-flex; align-items: center; line-height: 0; }
.site-header__cta { display: flex; align-items: center; gap: var(--space-3); flex-wrap: nowrap; }
.logo-mark img {
  height: 32px;
  width: auto;
  filter: url(#logo-black-to-alpha) drop-shadow(0 0 10px rgba(225, 38, 28, 0.2));
}
.logo-mark--footer img { height: 28px; }

/* ============ Fixed full-page video background ============ */
.video-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background: var(--bg-page);
  transform: translateZ(0);
}
.video-bg__video {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center top;
  z-index: 0;
}
.video-bg__vignette {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(6,7,10,0.6) 0%, rgba(6,7,10,0.15) 35%, rgba(6,7,10,0.3) 70%, rgba(6,7,10,0.75) 100%);
}
.video-bg__glow {
  position: absolute;
  z-index: 1;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0.55;
}
.video-bg__glow--a {
  width: 50vw; height: 50vw;
  top: -10%; right: -10%;
  background: radial-gradient(circle, var(--color-red-500), transparent 70%);
}
.video-bg__glow--b {
  width: 40vw; height: 40vw;
  bottom: -15%; left: -10%;
  background: radial-gradient(circle, var(--color-red-700), transparent 70%);
}

/* ============ Hero ============ */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  background: transparent;
}
.hero__content {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  padding-top: var(--space-32);
  padding-bottom: var(--space-24);
}
.hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-hero);
  line-height: var(--lh-tight);
  margin: 0 0 var(--space-6);
  letter-spacing: -0.01em;
}
.hero__title .tm { font-size: 0.4em; vertical-align: super; }
.hero__tagline {
  font-size: var(--fs-body-lg);
  color: var(--text-secondary);
  max-width: 56ch;
  margin: 0 auto var(--space-8);
  line-height: var(--lh-relaxed);
}
.hero__actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============ Section glows (atmosphere) ============ */
section { position: relative; }
.section-glow {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.section-glow::before {
  content: "";
  position: absolute;
  width: 45vw; height: 45vw;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.18;
  background: radial-gradient(circle, var(--color-red-500), transparent 70%);
  top: -15%; left: 60%;
}
.section-glow--stats::before { top: 20%; left: -10%; }
.section-glow--about::before { top: -10%; left: 70%; }

/* ============ Channels ============ */
.channels { padding: var(--space-24) 0; background: rgba(11, 12, 16, 0.28); }
.channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  position: relative;
  z-index: 1;
}
@media (min-width: 600px) { .channel-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) { .channel-grid { grid-template-columns: repeat(3, 1fr); } }

.channel-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--bg-surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.channel-card:hover { transform: translateY(-3px); }
.channel-card__icon { width: 28px; height: 28px; flex-shrink: 0; color: var(--text-secondary); transition: color 0.2s ease; }
.channel-card--ghost { opacity: 0.85; }

.channel-card--telegram:hover { border-color: var(--brand-telegram); }
.channel-card--telegram:hover .channel-card__icon { color: var(--brand-telegram); }
.channel-card--whatsapp:hover { border-color: var(--brand-whatsapp); }
.channel-card--whatsapp:hover .channel-card__icon { color: var(--brand-whatsapp); }
.channel-card--linkedin:hover { border-color: var(--brand-linkedin); }
.channel-card--linkedin:hover .channel-card__icon { color: var(--brand-linkedin); }
.channel-card--facebook:hover { border-color: var(--brand-facebook); }
.channel-card--facebook:hover .channel-card__icon { color: var(--brand-facebook); }
.channel-card--instagram:hover { border-color: var(--brand-instagram-mid); }
.channel-card--instagram:hover .channel-card__icon { color: var(--brand-instagram-mid); }
.channel-card--youtube:hover { border-color: var(--brand-youtube); }
.channel-card--youtube:hover .channel-card__icon { color: var(--brand-youtube); }

/* ============ Stats ============ */
.stats { padding: var(--space-24) 0; background: rgba(6, 7, 10, 0.24); }
.stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  text-align: center;
  position: relative;
  z-index: 1;
}
@media (min-width: 600px) { .stats-grid { grid-template-columns: repeat(3, 1fr); } }
.stat-card__number {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-stat);
  margin: 0;
  background: linear-gradient(135deg, var(--color-silver-100), var(--color-red-400));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat-card__label {
  margin: var(--space-2) 0 0;
  color: var(--text-secondary);
  font-size: var(--fs-body-lg);
}

/* ============ About ============ */
.about { padding: var(--space-24) 0 var(--space-32); background: rgba(11, 12, 16, 0.28); }
.about .container { position: relative; z-index: 1; }
.about__lead {
  max-width: 70ch;
  margin: 0 auto var(--space-8);
  text-align: center;
  font-size: var(--fs-body-lg);
  color: var(--text-secondary);
  line-height: var(--lh-relaxed);
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}
@media (min-width: 600px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) { .feature-grid { grid-template-columns: repeat(4, 1fr); } }
.feature-card {
  padding: var(--space-6);
  background: var(--bg-surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}
.feature-card__icon { width: 32px; height: 32px; color: var(--brand-accent-hover); margin-bottom: var(--space-4); }
.feature-card h4 { margin: 0 0 var(--space-2); font-family: var(--font-display); font-size: 1.1rem; }
.feature-card p { margin: 0; color: var(--text-secondary); font-size: var(--fs-small); line-height: var(--lh-relaxed); }

.tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}
.tag {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: var(--fs-small);
  font-weight: 500;
}

.vision-quote {
  margin: var(--space-16) auto 0;
  max-width: 60ch;
  text-align: center;
  padding: var(--space-8);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}
.vision-quote p {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.4rem;
  line-height: var(--lh-tight);
  color: var(--text-primary);
  margin: 0;
}

/* ============ Footer ============ */
.site-footer { padding: var(--space-16) 0 var(--space-8); background: rgba(6, 7, 10, 0.45); border-top: 1px solid var(--border-subtle); }
.site-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  text-align: center;
}
.footer-social { display: flex; flex-wrap: wrap; gap: var(--space-3); justify-content: center; }
.footer-social__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.footer-social__link svg { width: 18px; height: 18px; }
.footer-social__link:hover { transform: translateY(-2px); }
.footer-social__link--telegram:hover { color: var(--brand-telegram); border-color: var(--brand-telegram); }
.footer-social__link--whatsapp:hover { color: var(--brand-whatsapp); border-color: var(--brand-whatsapp); }
.footer-social__link--linkedin:hover { color: var(--brand-linkedin); border-color: var(--brand-linkedin); }
.footer-social__link--facebook:hover { color: var(--brand-facebook); border-color: var(--brand-facebook); }
.footer-social__link--instagram:hover { color: var(--brand-instagram-mid); border-color: var(--brand-instagram-mid); }
.footer-social__link--youtube:hover { color: var(--brand-youtube); border-color: var(--brand-youtube); }

.footer-legal { display: flex; gap: var(--space-6); }
.footer-legal a { color: var(--text-secondary); font-size: var(--fs-small); }
.footer-legal a:hover { color: var(--text-primary); }

.footer-copy { color: var(--text-muted); font-size: var(--fs-small); margin: 0; }

/* ============ Mobile refinements ============ */
@media (max-width: 600px) {
  .video-bg__glow { filter: blur(36px); opacity: 0.4; }

  .hero__content { padding-top: var(--space-24); padding-bottom: var(--space-16); }
  .hero__actions { flex-direction: column; align-items: center; }
  .hero__actions .btn { width: auto; min-width: 200px; }

  .channels, .stats { padding: var(--space-16) 0; }
  .about { padding: var(--space-16) 0 var(--space-24); }

  .channel-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-3); }
  .channel-card { width: auto; flex: 0 1 auto; padding: var(--space-3) var(--space-5); font-size: var(--fs-small); }
  .channel-card__icon { width: 22px; height: 22px; }

  .footer-social__link { width: 44px; height: 44px; }
  .footer-legal { flex-wrap: wrap; justify-content: center; row-gap: var(--space-2); }
}

@media (max-width: 420px) {
  .site-header__inner { gap: var(--space-2); }
  .site-header .btn--sm { padding: var(--space-2) var(--space-3); font-size: 0.75rem; }
  .site-header__cta { gap: var(--space-2); }
  .logo-mark img { height: 26px; }
}