/* CSS Variables */
:root {
  --color-primary: #0a4d68;
  --color-secondary: #00d9ff;
  --color-accent: #13c4a3;
  --color-background: #001524;
  --color-surface: rgba(8, 31, 44, 0.85);
  --color-text: #e4f4ff;
  --color-muted: rgba(228, 244, 255, 0.65);
  --gradient-primary: linear-gradient(135deg, rgba(10, 77, 104, 0.95), rgba(0, 217, 255, 0.6));
  --font-primary: "Roboto", "Segoe UI", system-ui, sans-serif;
  --font-secondary: "Exo 2", "Roboto", sans-serif;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-lg: 26px;
  --shadow-sm: 0 12px 25px rgba(0, 217, 255, 0.15);
  --shadow-md: 0 20px 45px rgba(0, 217, 255, 0.18);
  --shadow-inset: inset 0 0 0 1px rgba(0, 217, 255, 0.2);
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-primary);
  background: radial-gradient(circle at top, rgba(0, 217, 255, 0.12), transparent 45%),
              radial-gradient(circle at bottom, rgba(19, 196, 163, 0.08), transparent 55%),
              var(--color-background);
  color: var(--color-text);
  line-height: 1.65;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--color-secondary); }
img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Typography */
h1, h2, h3 {
  font-family: var(--font-secondary);
  margin: 0 0 var(--spacing-sm);
  color: #ffffff;
}
h1 { font-size: clamp(2.25rem, 2.9vw, 2.75rem); }
h2 { font-size: clamp(1.9rem, 2.4vw, 2.2rem); }
h3 { font-size: clamp(1.35rem, 1.9vw, 1.6rem); }
p { margin: 0 0 var(--spacing-md); color: var(--color-muted); }
ul, ol { margin: 0 0 var(--spacing-md) var(--spacing-lg); }

/* Buttons */
.btn-primary,
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-secondary), #12a5ff);
  color: #00111a;
  box-shadow: var(--shadow-md);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 25px 45px rgba(18, 165, 255, 0.3); }

.btn-outline {
  border: 1px solid rgba(0, 217, 255, 0.6);
  color: var(--color-secondary);
  background: transparent;
  backdrop-filter: blur(8px);
}
.btn-outline:hover { background: rgba(0, 217, 255, 0.12); box-shadow: var(--shadow-sm); }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(0, 13, 24, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(0, 217, 255, 0.12);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  padding: var(--spacing-sm) 0;
}

.logo img { filter: drop-shadow(0 0 12px rgba(0, 217, 255, 0.4)); }

.menu-toggle { display: none; }
.menu-toggle-label {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(0, 217, 255, 0.08);
  border: 1px solid rgba(0, 217, 255, 0.2);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.menu-icon,
.menu-icon::before,
.menu-icon::after {
  display: block;
  background: var(--color-secondary);
  height: 2px;
  width: 20px;
  border-radius: 1px;
  position: relative;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.menu-icon::before,
.menu-icon::after {
  content: "";
  position: absolute;
  left: 0;
}
.menu-icon::before { top: -6px; }
.menu-icon::after { top: 6px; }

.primary-nav {
  flex: 1 1 auto;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.primary-nav ul {
  list-style: none;
  display: flex;
  gap: var(--spacing-sm);
  margin: 0;
  padding: 0;
  flex-wrap: nowrap;
  white-space: nowrap;
  width: max-content;
}

.primary-nav li { flex: 0 0 auto; }

@media (min-width: 769px) {
  .primary-nav {
    padding-bottom: 0.4rem;
    margin-bottom: -0.4rem;
  }
}
.primary-nav a {
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-sm);
  color: var(--color-muted);
  font-weight: 500;
  transition: background 0.2s ease, color 0.2s ease;
}
.primary-nav a:hover,
.primary-nav a:focus {
  color: #ffffff;
  background: rgba(0, 217, 255, 0.1);
}

.header-cta {
  display: flex;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

/* Hero */
.hero-section {
  position: relative;
  background-position: center;
  background-size: cover;
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  overflow: hidden;
}
.hero-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(0, 217, 255, 0.4), transparent 55%),
              radial-gradient(circle at bottom right, rgba(10, 77, 104, 0.75), transparent 65%),
              rgba(0, 12, 24, 0.75);
}
.hero-section .container {
  position: relative;
  z-index: 2;
  max-width: 960px;
}
.hero-intro { margin-bottom: var(--spacing-md); color: var(--color-muted); font-size: 1.05rem; }

/* Content Blocks */
.content-block {
  padding: var(--spacing-xl) 0;
}
.content-block .container {
  display: grid;
  gap: var(--spacing-lg);
  align-items: center;
}
.content-block.horizontal .container {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.content-block.vertical .container {
  grid-template-columns: minmax(0, 1fr);
}

.block-text {
  background: var(--color-surface);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-inset);
  border: 1px solid rgba(0, 217, 255, 0.08);
}
.block-text ul { margin-left: 1.2rem; }
.block-text table { width: 100%; border-collapse: collapse; margin-bottom: var(--spacing-md); }
.block-text table th,
.block-text table td {
  padding: 0.75rem;
  border: 1px solid rgba(0, 217, 255, 0.12);
  text-align: left;
}
.block-text table th { background: rgba(0, 217, 255, 0.08); color: #ffffff; }

.block-image picture {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.block-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Content Grid */
.content-grid-section {
  padding: var(--spacing-xl) 0;
}
.content-grid-section .container {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  border: 1px solid rgba(0, 217, 255, 0.12);
  box-shadow: var(--shadow-inset);
}

.content-grid {
  display: grid;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-md);
}
.content-grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.content-grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.grid-item {
  background: rgba(0, 20, 36, 0.85);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  border: 1px solid rgba(0, 217, 255, 0.08);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.grid-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.grid-item picture {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-sm);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.grid-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Conclusion */
.conclusion-section {
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  background: rgba(0, 12, 24, 0.7);
  border-top: 1px solid rgba(0, 217, 255, 0.08);
}
.conclusion-section .container {
  max-width: 820px;
  text-align: center;
}
.conclusion-section p { color: var(--color-muted); }

/* Footer */
.site-footer {
  background: rgba(0, 10, 20, 0.92);
  border-top: 1px solid rgba(0, 217, 255, 0.1);
  margin-top: var(--spacing-xl);
}
.footer-top {
  display: grid;
  gap: var(--spacing-xl);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}
.footer-about p { color: var(--color-muted); }
.footer-payments ul,
.footer-links ul {
  list-style: none;
  padding: 0;
  margin: var(--spacing-sm) 0 0;
}
.footer-payments ul {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--spacing-sm);
}
.footer-payments img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  padding: 0.4rem;
  object-fit: contain;
}

.footer-responsible img {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  padding: 0.4rem;
  object-fit: contain;
}
.footer-links a { color: var(--color-muted); display: inline-block; padding: 0.3rem 0; }
.footer-links a:hover { color: var(--color-secondary); }

.footer-responsible {
  background: rgba(0, 20, 36, 0.8);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border: 1px solid rgba(0, 217, 255, 0.12);
}
.responsible-icons {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.footer-bottom {
  border-top: 1px solid rgba(0, 217, 255, 0.08);
  padding: var(--spacing-md) 0;
  text-align: center;
  color: var(--color-muted);
  display: grid;
  gap: var(--spacing-sm);
}
.affiliate-note { color: rgba(255, 204, 0, 0.7); font-size: 0.95rem; }

/* Responsive */
@media (max-width: 1024px) {
  .primary-nav ul { gap: 0.4rem; }
  .content-block.horizontal .container { grid-template-columns: minmax(0, 1fr); }
  .content-grid.cols-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .header-cta { gap: 0.5rem; }
}

@media (max-width: 768px) {
  .header-container {
    flex-wrap: nowrap;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    align-items: center;
  }
  .logo img {
    width: 50px;
    height: auto;
  }
  .primary-nav {
    display: block;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: auto;
    background: rgba(0, 10, 20, 0.96);
    backdrop-filter: blur(16px);
    transform: translateY(-120%);
    transition: transform 0.3s ease;
    padding: var(--spacing-lg) var(--spacing-md) var(--spacing-xl);
    overflow: visible;
  }
  .primary-nav ul {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
    white-space: normal;
    width: 100%;
  }
  .primary-nav a { padding: 0.9rem 0; font-size: 1.05rem; }

  .menu-toggle-label {
    display: inline-flex;
    order: 3;
    margin-left: var(--spacing-sm);
  }
  .header-cta {
    width: auto;
    order: 2;
    margin-left: auto;
    justify-content: flex-end;
    gap: 0.4rem;
  }
  .primary-nav { order: 4; }
  .header-cta .btn-primary,
  .header-cta .btn-outline {
    padding: 0.55rem 1.1rem;
    font-size: 0.8rem;
  }
  .header-cta .btn-outline { display: none; }
  .header-cta .btn-primary {
    padding: 0.5rem 0.9rem;
    font-size: 0.78rem;
  }

  .menu-toggle:checked ~ .menu-toggle-label .menu-icon { background: transparent; }
  .menu-toggle:checked ~ .menu-toggle-label .menu-icon::before { transform: translateY(6px) rotate(45deg); }
  .menu-toggle:checked ~ .menu-toggle-label .menu-icon::after { transform: translateY(-6px) rotate(-45deg); }
  .menu-toggle:checked ~ .primary-nav { transform: translateY(0); }

  .content-grid.cols-3,
  .content-grid.cols-4 { grid-template-columns: minmax(0, 1fr); }
  .footer-payments ul { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* Utility */
.glass-panel {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid rgba(0, 217, 255, 0.12);
  box-shadow: var(--shadow-inset);
  padding: var(--spacing-lg);
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  background: rgba(0, 217, 255, 0.2);
  color: #ffffff;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table-scroll {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid rgba(0, 217, 255, 0.1);
}