/* ==========================================================================
   Ольга Чиплис — Evervault Design System
   Cyber-Security & Dev-Infrastructure Aesthetic
   Palette: Vivid Indigo (#6633ee) on Cool Near-Black (#010314)
   ========================================================================== */

:root {
  --bg-canvas: #010314;
  --bg-surface: #06091f;
  --bg-surface-elevated: #0c102f;
  --bg-card: rgba(10, 15, 42, 0.65);
  --bg-card-hover: rgba(16, 23, 62, 0.75);

  --primary-indigo: #6633ee;
  --primary-indigo-hover: #7b4df2;
  --indigo-glow: rgba(102, 51, 238, 0.28);
  --indigo-subtle: rgba(102, 51, 238, 0.12);

  --accent-cyan: #00f0ff;
  --accent-cyan-glow: rgba(0, 240, 255, 0.2);
  --accent-emerald: #00e599;

  --text-white: #ffffff;
  --text-primary: #f2f4fc;
  --text-secondary: #9aa2c8;
  --text-muted: #5e688e;
  --text-dim: #3d4668;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-indigo: rgba(102, 51, 238, 0.35);
  --border-indigo-hover: rgba(102, 51, 238, 0.7);
  --border-cyan: rgba(0, 240, 255, 0.3);

  --font-display: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-indigo: 0 12px 36px -8px rgba(102, 51, 238, 0.45);
  --shadow-card: 0 20px 40px -15px rgba(0, 2, 16, 0.85);

  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-canvas);
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(102, 51, 238, 0.16) 0%, transparent 60%),
    radial-gradient(circle at 85% 30%, rgba(0, 240, 255, 0.05) 0%, transparent 40%),
    linear-gradient(to bottom, #010314, #03061c);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Фоновая сетка Evervault */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.8) 0%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.8) 0%, transparent 80%);
  pointer-events: none;
  z-index: 0;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index: 1;
}

/* Типографика */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--text-white);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.mono { font-family: var(--font-mono); }
.text-cyan { color: var(--accent-cyan); }
.text-indigo { color: var(--primary-indigo); }
.text-emerald { color: var(--accent-emerald); }

/* Шапка сайта */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(1, 3, 20, 0.82);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.3s var(--ease-spring);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.brand-badge {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(102, 51, 238, 0.35), rgba(0, 240, 255, 0.15));
  border: 1px solid var(--border-indigo);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent-cyan);
  box-shadow: 0 0 16px var(--indigo-subtle);
  transition: all 0.25s var(--ease-spring);
}

.brand-logo:hover .brand-badge {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 24px var(--accent-cyan-glow);
  transform: scale(1.05);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: -0.02em;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  background: rgba(0, 229, 153, 0.08);
  border: 1px solid rgba(0, 229, 153, 0.25);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--accent-emerald);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.btn-header {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  background: var(--primary-indigo);
  color: var(--text-white);
  font-size: 0.86rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 16px var(--indigo-glow);
  transition: all 0.25s var(--ease-spring);
}

.btn-header:hover {
  background: var(--primary-indigo-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-indigo);
}

/* Кнопки */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 34px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s var(--ease-spring);
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--primary-indigo);
  color: var(--text-white);
  box-shadow: var(--shadow-indigo);
  border: 1px solid rgba(255, 255, 255, 0.24);
}

.btn-primary:hover {
  background: var(--primary-indigo-hover);
  transform: translateY(-2px);
  box-shadow: 0 16px 40px -6px rgba(102, 51, 238, 0.6);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-indigo-hover);
  transform: translateY(-2px);
}

/* Hero Section */
.hero-section {
  padding: 70px 0 100px;
  min-height: calc(100vh - 74px);
  display: flex;
  align-items: center;
  position: relative;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px;
  background: var(--indigo-subtle);
  border: 1px solid var(--border-indigo);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: #c2b0ff;
  width: fit-content;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.25rem;
  line-height: 1.1;
  margin-bottom: 22px;
  letter-spacing: -0.04em;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #ffffff 30%, #a285ff 70%, #00f0ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 38px;
  max-width: 620px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 44px;
  flex-wrap: wrap;
}

/* Инженерная панель данных (Data Bar) */
.hero-data-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 20px 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-indigo);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.data-node {
  display: flex;
  flex-direction: column;
}

.data-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
  margin-bottom: 4px;
}

.data-value {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-white);
  line-height: 1.35;
}

/* Визуал Hero (Терминальная карточка Evervault) */
.hero-visual {
  position: relative;
}

.terminal-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-indigo);
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-card), 0 0 40px -10px var(--indigo-glow);
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: rgba(1, 3, 20, 0.85);
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-muted);
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
}

.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }

.terminal-photo-box {
  position: relative;
  aspect-ratio: 3.8 / 4.6;
  max-height: 480px;
  overflow: hidden;
}

.terminal-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: contrast(106%) brightness(96%);
  transition: transform 0.8s var(--ease-spring);
}

.terminal-card:hover .terminal-img {
  transform: scale(1.02);
}

.terminal-overlay-code {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px;
  background: linear-gradient(180deg, transparent 0%, rgba(1, 3, 20, 0.95) 85%);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.code-line {
  display: flex;
  gap: 8px;
  align-items: center;
}

.code-key { color: var(--text-muted); }
.code-val { color: var(--accent-emerald); font-weight: 600; }
.code-val.indigo { color: #a285ff; }

/* Общие секции */
.section {
  padding: 120px 0;
  position: relative;
  border-top: 1px solid var(--border-subtle);
}

.section-top {
  margin-bottom: 60px;
  max-width: 820px;
}

.section-tag-mono {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent-cyan);
  margin-bottom: 16px;
  background: rgba(0, 240, 255, 0.06);
  padding: 4px 12px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-cyan);
}

.section-heading {
  font-size: 2.85rem;
  margin-bottom: 18px;
}

.section-desc {
  font-size: 1.12rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Секция: Твёрдое (Security Vault Cards) */
.vault-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.vault-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 44px 38px;
  display: flex;
  flex-direction: column;
  transition: all 0.35s var(--ease-spring);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(16px);
}

.vault-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary-indigo), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.vault-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-indigo-hover);
  background: var(--bg-card-hover);
  box-shadow: 0 16px 40px -10px var(--indigo-glow);
}

.vault-card:hover::before {
  opacity: 1;
}

.vault-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.vault-stat {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1;
  text-shadow: 0 0 20px var(--indigo-glow);
}

.vault-stat.cyan { color: var(--accent-cyan); text-shadow: 0 0 20px var(--accent-cyan-glow); }
.vault-stat.emerald { color: var(--accent-emerald); text-shadow: 0 0 20px rgba(0, 229, 153, 0.3); }

.vault-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #a285ff;
  background: var(--indigo-subtle);
  padding: 5px 12px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-indigo);
}

.vault-title {
  font-size: 1.35rem;
  margin-bottom: 14px;
}

.vault-p {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Секция: Фильтр на входе (Access Control Policy) */
.filter-box-tech {
  background: linear-gradient(160deg, rgba(12, 16, 47, 0.8), rgba(2, 4, 18, 0.95));
  border: 1px solid var(--border-indigo);
  border-radius: var(--radius-lg);
  padding: 60px 54px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(20px);
}

.filter-header-tech {
  margin-bottom: 44px;
  max-width: 720px;
}

.filter-pill-red {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #ff6b7b;
  background: rgba(255, 107, 123, 0.08);
  border: 1px solid rgba(255, 107, 123, 0.28);
  padding: 4px 12px;
  border-radius: var(--radius-xs);
  margin-bottom: 14px;
}

.filter-grid-tech {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 40px;
}

.filter-card-tech {
  display: flex;
  align-items: flex-start;
  gap: 22px;
  padding: 24px 28px;
  border-radius: var(--radius-md);
  background: rgba(1, 3, 20, 0.6);
  border: 1px solid var(--border-subtle);
  transition: border-color 0.25s ease;
}

.filter-card-tech:hover {
  border-color: rgba(255, 107, 123, 0.4);
}

.filter-icon-deny {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: #ff6b7b;
  background: rgba(255, 107, 123, 0.12);
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.filter-body-tech h4 {
  font-size: 1.15rem;
  margin-bottom: 6px;
  color: var(--text-white);
}

.filter-body-tech p {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.policy-footer {
  padding-top: 28px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.policy-label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  color: var(--accent-cyan);
  letter-spacing: 0.1em;
}

.policy-text {
  font-size: 0.98rem;
  color: var(--text-primary);
  max-width: 800px;
}

/* Финальный экран: Direct Transmission (CTA) */
.transmission-card {
  display: grid;
  grid-template-columns: 0.85fr 1.25fr;
  gap: 60px;
  align-items: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-indigo);
  border-radius: var(--radius-lg);
  padding: 56px;
  box-shadow: var(--shadow-card), 0 0 50px -15px var(--indigo-glow);
  position: relative;
  overflow: hidden;
}

.transmission-card::after {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--indigo-glow) 0%, transparent 70%);
  pointer-events: none;
}

.transmission-visual {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-indigo);
  aspect-ratio: 3.8 / 4.8;
  max-height: 480px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

.transmission-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: contrast(106%) brightness(96%);
}

.transmission-content {
  display: flex;
  flex-direction: column;
}

.transmission-title {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.transmission-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 36px;
}

.transmission-actions {
  display: flex;
  margin-bottom: 24px;
}

.meta-security {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.meta-security span::before {
  content: '✓ ';
  color: var(--accent-emerald);
}

/* Подвал */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 44px 0;
  background-color: var(--bg-canvas);
  position: relative;
  z-index: 1;
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-white);
}

.footer-tagline {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
}

.footer-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.footer-tg {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

.footer-tg:hover {
  color: #fff;
  text-shadow: 0 0 12px var(--accent-cyan-glow);
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* Адаптивность под экраны */
@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .hero-visual {
    max-width: 440px;
    margin: 0 auto;
  }

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

  .transmission-card {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 38px 26px;
  }

  .transmission-visual {
    max-width: 400px;
    margin: 0 auto;
  }

  .filter-box-tech {
    padding: 38px 24px;
  }
}

@media (max-width: 768px) {
  .header-actions .status-pill {
    display: none;
  }

  .hero-title {
    font-size: 2.25rem;
  }

  .hero-description {
    font-size: 1.02rem;
  }

  .hero-data-bar {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .section-heading {
    font-size: 2.15rem;
  }

  .transmission-title {
    font-size: 1.95rem;
  }

  .btn-primary {
    width: 100%;
  }

  .meta-security {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .footer-container {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .footer-right {
    align-items: flex-start;
  }
}