/* AffSoft — modern design system */
:root {
  --brand: #4f46e5;
  --brand-2: #7c3aed;
  --grad: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  --ink: #0f172a;
  --ink-muted: #64748b;
  --bg: #f6f7fb;
  --card: #ffffff;
  --border: #e7e8ef;
}

body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--brand); }

/* ---------- Navbar ---------- */
.navbar-site {
  background: rgba(255, 255, 255, 0.85);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.brand-logo {
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: 1.35rem;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.navbar-site .nav-link { color: var(--ink-muted); font-weight: 500; }
.navbar-site .nav-link:hover { color: var(--ink); }
.navbar-site .nav-link.active { color: var(--brand); }

/* ---------- Hero ---------- */
.hero {
  background: var(--grad);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 85% 20%, rgba(255, 255, 255, 0.18) 0, transparent 40%),
    radial-gradient(circle at 10% 90%, rgba(255, 255, 255, 0.12) 0, transparent 40%);
}
.hero .container { position: relative; z-index: 1; }

/* ---------- Section headings ---------- */
.section-eyebrow {
  color: var(--brand);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.75rem;
}

/* ---------- Cards ---------- */
.card-guide,
.card-category {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.card-guide:hover,
.card-category:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.1);
  border-color: transparent;
}
.card-guide { overflow: hidden; }
.card-img-fixed { height: 190px; object-fit: cover; }
.badge-category {
  background: var(--grad);
  color: #fff;
  font-weight: 600;
}
.link-brand { color: var(--brand); }
.link-brand:hover { color: var(--brand-2); }

/* ---------- Article ---------- */
.article { font-size: 1.05rem; line-height: 1.75; }
.article h2 { margin-top: 2.25rem; font-weight: 700; }
.article h3 { margin-top: 1.75rem; font-weight: 650; }
.article p,
.article li { color: #334155; }
.article img { max-width: 100%; border-radius: 0.75rem; }
.article blockquote {
  border-left: 3px solid var(--brand);
  padding-left: 1rem;
  color: var(--ink-muted);
  font-style: italic;
}

/* ---------- TOC / sidebar ---------- */
.toc-card { border: 1px solid var(--border); border-radius: 1rem; overflow: hidden; }
.toc-card .card-header { background: #fff; font-weight: 700; }
.toc ul { list-style: none; padding-left: 0; margin-bottom: 0; }
.toc ul ul { padding-left: 1rem; margin-top: 0.25rem; }
.toc li { margin-bottom: 0.25rem; }
.toc a { color: var(--ink-muted); text-decoration: none; font-size: 0.9rem; }
.toc a:hover { color: var(--brand); }

/* ---------- Footer ---------- */
.site-footer { background: #0f172a; color: #cbd5e1; }
.site-footer a:hover { color: #fff; }
.site-footer .brand-logo { color: #fff; -webkit-text-fill-color: #fff; }

/* ---------- Breadcrumb ---------- */
.breadcrumb { font-size: 0.9rem; }

/* ---------- 404 ---------- */
.error-code {
  font-size: 6rem;
  font-weight: 800;
  line-height: 1;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.btn-brand {
  background: var(--grad);
  color: #fff;
  border: none;
  font-weight: 600;
}
.btn-brand:hover { color: #fff; filter: brightness(1.05); }