:root {
  --bg: #0b0d12;
  --panel: #121621;
  --text: #e8eef8;
  --muted: #a7b3c6;
  --brand: #6aa8ff;
  --ring: #28406b;
  --border: #1b2231;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font: 16px/1.5 system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 16px;
  padding: 12px 16px;
  background: linear-gradient(180deg, #0f1420, #0b0d12);
  border-bottom: 1px solid var(--border);
}
.brand {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
  letter-spacing: .2px;
}
.hamburger {
  margin-left: auto;
  font-size: 22px;
  line-height: 1;
  background: transparent; color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px; padding: 6px 10px;
  cursor: pointer;
}
.nav { margin-left: auto; }
.nav-list, .submenu {
  list-style: none; margin: 0; padding: 0;
}
.nav-list > li { display: inline-block; position: relative; }
.nav-list a, .submenu-toggle {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 10px;
  text-decoration: none;
  color: var(--text);
  border: 1px solid transparent;
}
.nav-list a:hover, .submenu-toggle:hover {
  background: var(--panel);
  border-color: var(--border);
}
.nav-list a.active {
  background: var(--ring);
  border-color: var(--brand);
}

/* Submenu */
.has-children .submenu-toggle { background: transparent; border: 1px solid var(--border); cursor: pointer; }
.has-children .submenu {
  position: absolute; top: calc(100% + 8px); left: 0; min-width: 220px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px; padding: 6px;
  display: none;
}
.has-children.open .submenu { display: block; }
.submenu li { display: block; }
.submenu a { display: block; }

/* Layout */
.container {
  max-width: 1100px; margin: 24px auto; padding: 0 16px;
}
.grid {
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
}
.btn {
  display: inline-block;
  margin-top: 8px;
  padding: 10px 14px;
  background: var(--brand);
  color: #081019;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
}

/* Galeria */
.gallery {
  display: grid; gap: 12px;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}
.gallery figure {
  margin: 0; background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px; overflow: hidden;
}
.gallery img {
  display: block; width: 100%; height: auto;
}
.gallery figcaption {
  padding: 8px 10px; color: var(--muted); font-size: 0.9rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 16px; text-align: center; color: var(--muted);
}

/* Mobile */
@media (max-width: 900px) {
  .nav { position: fixed; inset: 56px 12px auto 12px; }
  .nav-list > li { display: block; margin-top: 8px; }
  .nav { display: none; }
  .nav.open { display: block; background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 8px; }
  .has-children .submenu { position: static; display: none; margin-top: 6px; }
  .has-children.open .submenu { display: block; }
}