:root {
  --bg: #0f1115;
  --card: #1a1d24;
  --text: #e8eaf0;
  --muted: #9aa0ac;
  --accent: #4f8cff;
  --radius: 12px;
}

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

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

.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* Header */
header {
  border-bottom: 1px solid #22252c;
  padding: 16px 0;
  position: sticky; top: 0;
  background: rgba(15,17,21,0.95);
  backdrop-filter: blur(8px);
  z-index: 10;
}
.header-inner { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 22px; font-weight: 700; color: var(--text); text-decoration: none; }
.logo span { color: var(--accent); }
nav a { color: var(--muted); margin-left: 20px; text-decoration: none; font-size: 15px; }
nav a:hover { color: var(--text); }

/* Hero */
.hero { padding: 80px 0 60px; text-align: center; }
.hero h1 { font-size: 42px; margin-bottom: 16px; }
.hero p { color: var(--muted); font-size: 18px; margin-bottom: 28px; }

/* Buttons */
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 12px 24px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: opacity .2s;
}
.btn:hover { opacity: .85; }
.btn-small { padding: 8px 16px; font-size: 14px; }

/* Filters */
.filters { display: flex; gap: 10px; flex-wrap: wrap; margin: 24px 0; }
.filter-btn {
  background: var(--card);
  color: var(--muted);
  border: 1px solid #2a2e37;
  padding: 8px 16px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 14px;
}
.filter-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 60px;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .2s;
}
.card:hover { transform: translateY(-4px); }
.card img { width: 100%; height: 200px; object-fit: cover; display: block; }
.card-body { padding: 16px; display: flex; flex-direction: column; flex: 1; }
.card-body h3 { font-size: 17px; margin-bottom: 8px; }
.card-body p { color: var(--muted); font-size: 14px; flex: 1; }
.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 14px;
}
.price { font-weight: 700; color: var(--accent); }

/* Articles */
.articles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 60px;
}
.article-card {
  background: var(--card);
  padding: 20px;
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  transition: transform .2s;
}
.article-card:hover { transform: translateY(-4px); }
.article-card h3 { margin-bottom: 8px; }
.article-card p { color: var(--muted); font-size: 14px; }

/* Section titles */
h2 { font-size: 28px; margin-bottom: 8px; }

/* Footer */
footer {
  border-top: 1px solid #22252c;
  padding: 30px 0;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}
footer a { color: var(--accent); }

/* Mobile */
@media (max-width: 600px) {
  .hero h1 { font-size: 28px; }
  nav a { margin-left: 12px; font-size: 14px; }
  .header-inner { flex-wrap: wrap; gap: 10px; }
}