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

:root {
    --primary: #0f172a;
    --accent: #095ab1; /* #2563eb */
    --text: #334155;
    --light-bg: #f8fafc;
    --border: #e2e8f0;
    --button-text: #fff;
}

html { scroll-behavior: smooth; }
body { font-family: 'Roboto', sans-serif; line-height: 1.6; color: var(--text); background: var(--light-bg); font-weight:400; }
.container { max-width: 900px; margin: 0 auto; padding: 0 1.5rem; }

/* Navigation */
.site-header { border-bottom: 1px solid var(--border); padding: 1rem 0; position: sticky; top: 0; background: var(--light-bg); backdrop-filter: blur(10px); z-index: 100; }
.nav { display: flex; justify-content: space-between; align-items: center; }
.nav-logo { font-weight: 700; font-size: 1.25rem; text-decoration: none; color: var(--primary); }
.nav-links a { margin-left: 1.5rem; text-decoration: none; color: var(--text); font-size: 0.9rem; transition: 0.2s; }
.nav-links a:hover { color: var(--accent); }

/* Hero */
.hero { padding: 4rem 0 4rem; }
.hero h1 { font-size: 3.5rem; color: var(--primary); line-height: 1.1; font-weight:800; }
.hero p { line-height: 1.3; font-weight:300; }
.name { color: var(--accent); }
.lead { font-size: 1.25rem; max-width: 650px; }

/* Buttons */
.button { display: inline-block; padding: 0.8rem 1.6rem; background: var(--accent); color: var(--button-text); text-decoration: none; border-radius: 6px; font-weight: 600; transition: 0.2s; border: 2px solid var(--accent); }
.button-outline { background: transparent; color: var(--accent); margin-left: 0.75rem; }
.button:hover { transform: translateY(-2px); opacity: 0.9; }

/* Content Sections */
.section { padding: 4rem 0; }
h2 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); margin-bottom: 1.5rem; font-weight: 700; }
hr { border: 0; border-top: 1px solid var(--border); }
.section a { color: var(--accent); text-decoration:none; }

/* Grid & Cards */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.5rem; }
.card { padding: 1.5rem; background: var(--light-bg); border: 1px solid var(--border); border-radius: 8px; }
.card h3 { font-size: 1.1rem; margin-bottom: 0.75rem; color: var(--primary); }
.card ul { list-style: none; }
.card li { margin-bottom: 0.4rem; font-size: 0.95rem; padding-left: 1rem; position: relative; }
.card li::before { content: "•"; position: absolute; left: 0; color: var(--accent); }

/* Footer */
.site-footer { padding: 3rem 0; border-top: 1px solid var(--border); margin-top: 4rem; color: #94a3b8; text-align: center; }

@media (max-width: 600px) {
    h1 { font-size: 2.5rem; }
    .button { display: block; margin: 0.5rem 0; text-align: center; }
}

@media (prefers-color-scheme: dark) {
    :root {
        --primary: #f1f5f9;
        --accent: #60a5fa;
        --text: #cbd5e1;
        --bg: #0f172a;
        --light-bg: #1e293b;
        --border: #334155;
        --button-text: #000;
    }
}