:root {
  --primary: #000000;
  --secondary: #ffffff;
}

[data-theme="light"] {
  --page-text: #0b0d12;
  --page-muted: #4b5563;
  --bg: #ffffff;
  --panel: #f6f7fb;
  --line: rgba(17, 24, 39, 0.10);
  --radius: 14px;
}

[data-theme="dark"] {
  --page-text: #eaeef6;
  --page-muted: #a6b0c3;
  --bg: #0b0d12;
  --panel: #0f1218;
  --line: rgba(255, 255, 255, 0.10);
  --radius: 14px;
}

[data-theme="system"] {
  --page-text: #0b0d12;
  --page-muted: #4b5563;
  --bg: #ffffff;
  --panel: #f6f7fb;
  --line: rgba(17, 24, 39, 0.10);
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  [data-theme="system"] {
    --page-text: #eaeef6;
    --page-muted: #a6b0c3;
    --bg: #0b0d12;
    --panel: #0f1218;
    --line: rgba(255, 255, 255, 0.10);
    --radius: 14px;
  }
}

[data-theme="emerald"] {
  --page-text: #062814;
  --page-muted: #3a5f4d;
  --bg: #f6fbf8;
  --panel: #ecf8f1;
  --line: rgba(6, 40, 20, 0.12);
  --radius: 14px;
}

[data-theme="royal"] {
  --page-text: #0e1320;
  --page-muted: #5b6b8a;
  --bg: #ffffff;
  --panel: #f3f6ff;
  --line: rgba(14, 19, 32, 0.10);
  --radius: 14px;
}

[data-theme="sepia"] {
  --page-text: #3b2f2a;
  --page-muted: #7a665c;
  --bg: #fbf6ef;
  --panel: #f3ece3;
  --line: rgba(59, 47, 42, 0.12);
  --radius: 14px;
}

[data-theme="dim"] {
  --page-text: #e6e8ee;
  --page-muted: #a9b0c1;
  --bg: #0e1117;
  --panel: #121621;
  --line: rgba(230, 232, 238, 0.10);
  --radius: 14px;
}

[data-theme="high-contrast"] {
  --page-text: #ffffff;
  --page-muted: #e5e7eb;
  --bg: #000000;
  --panel: #000000;
  --line: #ffffff;
  --radius: 0;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

img, svg, video {
  display: block;
  max-width: 100%;
  height: auto;
}

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial, sans-serif;
  background: var(--bg);
  color: var(--page-text);
  line-height: 1.6;
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 36px 0;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--bg) 90%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}

.header.scrolled {
  box-shadow: 0 6px 20px color-mix(in oklab, #000 10%, transparent);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
}

.nav-left {
  flex: 0 0 auto;
}

.nav-center {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
}

.nav-right {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.logo {
  font-weight: 700;
  text-decoration: none;
  color: var(--page-text);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--page-text);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 10px;
}

.nav-links a[aria-current="page"] {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
}

.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 10px;
}

.mobile-menu-btn span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--page-text);
  margin: 5px auto;
  transition: 0.2s ease;
}

@media (max-width: 860px) {
  .navbar {
    position: relative;
  }
  
  .nav-center {
    order: 3;
    flex-basis: 100%;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    gap: 10px;
    padding: 12px 16px;
    background: color-mix(in oklab, var(--bg) 96%, #000 4%);
    border-bottom: 1px solid var(--line);
    z-index: 1000;
  }
  
  .nav-links.open {
    display: flex;
  }
}

.footer {
  background: var(--panel);
  border-top: 1px solid var(--line);
  color: var(--page-text);
}

.footer .container {
  padding: 28px 20px;
}

.footer-content {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .footer-content {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .footer-content {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.footer-column {
  display: grid;
  gap: 12px;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.footer-links, .footer-contact-info {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.social-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.footer-bottom {
  border-top: 1px solid var(--line);
  margin-top: 16px;
  padding-top: 16px;
}

.footer-bottom-content {
  display: grid;
  gap: 10px;
  align-items: center;
  text-align: center;
}

@media (min-width: 640px) {
  .footer-bottom-content {
    grid-template-columns: 1fr auto;
    text-align: left;
  }
}

.footer-legal {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer a {
  color: var(--page-text);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

.footer, .footer * {
  overflow-wrap: anywhere;
}