:root {
  --primary: #0052cc;
  --primary-hover: #004099;
  --secondary: #64748b;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --card-bg: #ffffff;
  --text: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --radius: 12px;
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Inter', system-ui, -apple-system, sans-serif; color: var(--text); background: var(--bg); line-height: 1.6; }
a { color: var(--primary); text-decoration: none; transition: all 0.2s; }
a:hover { color: var(--primary-hover); }

.container { max-width: 1140px; margin: 0 auto; padding: 0 1.5rem; }
.py-5 { padding: 4rem 0; }
.text-center { text-align: center; }

/* Navbar */
.site-header { border-bottom: 1px solid var(--border); background: var(--bg); position: sticky; top: 0; z-index: 100; backdrop-filter: blur(8px); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { font-size: 1.4rem; font-weight: 800; color: var(--primary); display: flex; align-items: center; gap: 8px; }
.nav-links { display: flex; gap: 1.5rem; list-style: none; }
.nav-links a { color: var(--text); font-weight: 500; }
.nav-links a:hover { color: var(--primary); }

/* Hero */
.hero { padding: 5rem 0; background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%); text-align: center; }
.hero-title { font-size: 2.75rem; font-weight: 800; line-height: 1.2; margin-bottom: 1.25rem; color: #091e42; }
.hero-lead { font-size: 1.25rem; color: var(--text-muted); max-width: 680px; margin: 0 auto 2rem; }
.hero-actions { display: flex; justify-content: center; gap: 1rem; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 0.75rem 1.5rem; font-weight: 600; border-radius: 8px; border: none; cursor: pointer; transition: all 0.2s; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); color: #fff; transform: translateY(-1px); }
.btn-outline { background: transparent; border: 2px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

/* Grid & Cards */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2rem; margin-top: 2rem; }
.card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem; box-shadow: var(--shadow); transition: transform 0.2s, box-shadow 0.2s; }
.card:hover { transform: translateY(-4px); box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1); }
.card-icon { width: 48px; height: 48px; background: #e6f0ff; color: var(--primary); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; margin-bottom: 1.25rem; }
.card-title { font-size: 1.25rem; font-weight: 700; margin-bottom: 0.75rem; color: #091e42; }

/* Content pages */
.content-body { font-size: 1.1rem; line-height: 1.8; }
.content-body h2 { font-size: 1.8rem; margin: 2rem 0 1rem; color: #091e42; }
.content-body h3 { font-size: 1.4rem; margin: 1.5rem 0 0.75rem; color: #091e42; }
.content-body ul { padding-left: 1.5rem; margin-bottom: 1.5rem; }
.content-body p { margin-bottom: 1.25rem; }

/* Forms */
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; font-weight: 600; margin-bottom: 0.5rem; font-size: 0.95rem; }
.form-control { width: 100%; padding: 0.75rem 1rem; border: 1px solid var(--border); border-radius: 8px; font-family: inherit; font-size: 1rem; }
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0, 82, 204, 0.15); }
.alert-success { background: #dcfce7; color: #166534; padding: 1rem 1.5rem; border-radius: 8px; margin-bottom: 1.5rem; font-weight: 500; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-alt); padding: 3rem 0 2rem; margin-top: 4rem; }
.footer-bottom { text-align: center; color: var(--text-muted); font-size: 0.9rem; margin-top: 2rem; }