/* IMG Egyls — Main stylesheet. Critical path only; non-blocking. */
:root {
  --color-bg: #0d0f12;
  --color-surface: #161a1f;
  --color-text: #e8eaed;
  --color-text-muted: #9aa0a6;
  --color-accent: #5c9cf5;
  --color-accent-hover: #7ab0f7;
  --color-border: #2d3238;
  --font-sans: "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "Consolas", "Monaco", monospace;
  --space-xs: 0.25rem;
  --space-s: 0.5rem;
  --space-m: 1rem;
  --space-l: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --radius: 6px;
  --transition: 0.2s ease;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

.skip-link {
  position: absolute;
  top: -3rem;
  left: var(--space-m);
  z-index: 100;
  padding: var(--space-s) var(--space-m);
  background: var(--color-accent);
  color: var(--color-bg);
  text-decoration: none;
  border-radius: var(--radius);
  font-weight: 600;
  transition: top var(--transition);
}
.skip-link:focus {
  top: var(--space-m);
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(13, 15, 18, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-m) var(--space-l);
  max-width: 1200px;
  margin: 0 auto;
}
.logo img { display: block; height: 2rem; width: auto; }
.nav-main ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-l);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-main a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color var(--transition);
}
.nav-main a:hover, .nav-main a[href="/"] { color: var(--color-text); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-s);
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  font-size: 0;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
}

@media (max-width: 768px) {
  .nav-main { display: none; }
  .nav-main.is-open { display: block; position: absolute; top: 100%; left: 0; right: 0; background: var(--color-surface); border-bottom: 1px solid var(--color-border); padding: var(--space-m); }
  .nav-main.is-open ul { flex-direction: column; gap: var(--space-s); }
  .nav-toggle { display: flex; }
}

/* Container */
.container { max-width: 960px; margin: 0 auto; padding: 0 var(--space-l); }

/* Hero */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(13,15,18,0.4) 0%, rgba(13,15,18,0.85) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--space-2xl) var(--space-l);
}
.hero h1 {
  margin: 0 0 var(--space-m);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  color: #fff;
  text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}
.hero-lead {
  margin: 0 0 var(--space-xl);
  max-width: 42ch;
  margin-left: auto;
  margin-right: auto;
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  text-shadow: 0 1px 2px rgba(0,0,0,0.4);
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-m);
  justify-content: center;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--space-s) var(--space-l);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
  border: none;
  cursor: pointer;
}
.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
}
.btn-primary:hover { background: var(--color-accent-hover); }
.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover { border-color: var(--color-text-muted); color: var(--color-text); }

/* Sections */
.section {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--color-border);
}
.section h2 {
  margin: 0 0 var(--space-l);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
}
.section p {
  margin: 0 0 var(--space-m);
  color: var(--color-text-muted);
  max-width: 65ch;
}
.section p:last-child { margin-bottom: 0; }

/* Feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-l);
  list-style: none;
  margin: 0;
  padding: 0;
}
.feature-card a {
  display: block;
  padding: var(--space-l);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.feature-card a:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}
.feature-icon {
  display: block;
  margin-bottom: var(--space-s);
  font-size: 1.25rem;
  color: var(--color-accent);
}
.feature-card h3 {
  margin: 0 0 var(--space-s);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
}
.feature-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  max-width: none;
}

/* Footer nav */
.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-l);
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
}
.footer-nav a:hover { color: var(--color-accent); }

/* Site footer */
.site-footer {
  padding: var(--space-xl) var(--space-l);
  border-top: 1px solid var(--color-border);
  text-align: center;
}
.site-footer p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Page (subfolder) layout */
.page-header {
  padding: var(--space-2xl) 0 var(--space-xl);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.page-header .container { max-width: 960px; }
.page-banner {
  width: 100%;
  max-height: 320px;
  object-fit: cover;
  object-position: center;
  border-radius: var(--radius);
  margin-bottom: var(--space-l);
}
.breadcrumb {
  margin: 0 0 var(--space-m);
  padding: 0;
  list-style: none;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}
.breadcrumb li { display: inline; }
.breadcrumb li + li::before { content: " › "; }
.breadcrumb a { color: var(--color-text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-accent); }
.page-header h1 {
  margin: 0 0 var(--space-s);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--color-text);
}
.page-header .lead {
  margin: 0;
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  max-width: 60ch;
}

.page-content { padding: var(--space-2xl) 0; }
.page-content .container { max-width: 720px; }
.page-content h2 {
  margin: var(--space-xl) 0 var(--space-m);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
}
.page-content h2:first-child { margin-top: 0; }
.page-content h3 {
  margin: var(--space-l) 0 var(--space-s);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text);
}
.page-content p, .page-content ul {
  margin: 0 0 var(--space-m);
  color: var(--color-text-muted);
  max-width: 65ch;
}
.page-content ul { padding-left: 1.25rem; }
.page-content li { margin-bottom: var(--space-xs); }
.page-content a {
  color: var(--color-accent);
  text-decoration: none;
}
.page-content a:hover { text-decoration: underline; }
.page-content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 0.15em 0.4em;
  background: var(--color-surface);
  border-radius: 3px;
  color: var(--color-text-muted);
}

/* Lazy images */
img[loading="lazy"] { content-visibility: auto; }