:root {
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --subtle: #475569;
  --accent: #22c55e;
  --border: rgba(0,0,0,0.08);
  --shadow: 0 8px 24px rgba(0,0,0,0.06);
  --shadow-soft: 0 4px 12px rgba(0,0,0,0.05);
  --max-width: 1080px;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.2s ease;
}
:root[data-theme="dark"] {
  --bg: #0b1220;
  --card: #111827;
  --text: #e2e8f0;
  --subtle: #94a3b8;
  --accent: #22c55e;
  --border: rgba(255,255,255,0.08);
  --shadow: 0 8px 24px rgba(0,0,0,0.4);
  --shadow-soft: 0 4px 12px rgba(0,0,0,0.3);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background var(--transition), color var(--transition);
}

main { max-width: var(--max-width); margin: 0 auto; padding: 32px 20px 64px; }

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand .dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent) 22%, transparent);
  animation: pulse 2.4s ease-in-out infinite;
}
.section-title .swatch {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 10%, transparent), 0 0 0 0 color-mix(in srgb, var(--accent) 14%, transparent); }
  50% { box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent) 16%, transparent), 0 0 12px 4px color-mix(in srgb, var(--accent) 24%, transparent); }
  100% { box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 10%, transparent), 0 0 0 0 color-mix(in srgb, var(--accent) 14%, transparent); }
}
.brand h1 {
  margin: 0;
  font-size: 20px;
  letter-spacing: 0.4px;
}

.toggle {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: 999px;
  padding: 8px 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition), box-shadow var(--transition);
}
.toggle:hover { transform: translateY(-1px); box-shadow: var(--shadow); }

.layout { min-height: 100vh; background: var(--bg); }
.header.floating {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(12px);
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; gap: 12px; align-items: center; }
.nav a { color: var(--text); text-decoration: none; font-weight: 600; padding: 6px 10px; border-radius: 8px; }
.nav a:hover { background: color-mix(in srgb, var(--accent) 12%, transparent); }

.content { display: grid; grid-template-columns: 300px 1fr; gap: 18px; padding: 20px; }
.sidebar { position: sticky; top: 82px; display: grid; gap: 14px; height: max-content; }
.sidebar-block { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow-soft); }
.stack { display: grid; gap: 10px; }

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 18px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0,0,0,0.08); border-color: color-mix(in srgb, var(--accent) 18%, var(--border)); }

.section-title {
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  padding: 8px 12px;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.section-title .swatch {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent);
}

p { margin: 0 0 12px; color: var(--subtle); line-height: 1.55; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid transparent;
  background: var(--accent);
  color: #0f172a;
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition), box-shadow var(--transition);
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }

.grid { display: grid; gap: 14px; }
.grid.columns-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid.columns-2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--text);
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 600;
}

.list-item {
  border: 1px solid var(--border);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  background: color-mix(in srgb, var(--card) 90%, transparent);
  box-shadow: var(--shadow-soft);
}
.list-item.small { padding: 10px 12px; }
.list-item .title {
  font-weight: 700;
  color: var(--text);
  margin: 0 0 6px;
}
.list-item .meta { color: var(--subtle); font-size: 14px; }

.form { display: grid; gap: 10px; }
.input {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 15px;
}
.input:focus { outline: 2px solid color-mix(in srgb, var(--accent) 35%, transparent); border-color: color-mix(in srgb, var(--accent) 45%, transparent); }

.resources .resource-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow-soft);
  background: var(--card);
}
.resource-card h3 { margin: 0 0 8px; font-size: 16px; }
.resource-card p { margin: 0 0 10px; }
.resource-card .cta { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; color: var(--accent); text-decoration: none; }
.resource-card .cta:hover { text-decoration: underline; }

.footer { margin-top: 28px; color: var(--subtle); font-size: 14px; text-align: center; }

.main { display: grid; gap: 16px; }
.article .cta-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.article .cta { color: var(--accent); font-weight: 600; text-decoration: none; }
.article .cta:hover { text-decoration: underline; }

@media (max-width: 960px) {
  .content { grid-template-columns: 1fr; }
  .sidebar { position: relative; top: 0; order: 2; }
  .main { order: 1; }
  .header.floating { position: sticky; }
}