:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --whatsapp-color: #22c55e;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: var(--font-family); }
body { background-color: var(--bg-color); color: var(--text-color); min-height: 100vh; display: flex; flex-direction: column; }
header { background-color: var(--card-bg); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 1000; }
.navbar { max-width: 1200px; margin: 0 auto; padding: 1rem; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; }
.brand-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text-color); font-weight: bold; font-size: 1.2rem; }
.brand-badge { background-color: var(--primary); color: #fff; font-size: 0.75rem; padding: 2px 8px; border-radius: 4px; text-transform: uppercase; }
.nav-menu { display: flex; list-style: none; align-items: center; gap: 1.5rem; }
.nav-link { color: var(--text-color); text-decoration: none; font-weight: 500; transition: color 0.3s ease; }
.nav-link:hover { color: var(--primary); }
.dropdown { position: relative; }
.dropdown-btn { background: none; border: none; color: var(--text-color); font-size: 1rem; font-weight: 500; cursor: pointer; display: flex; align-items: center; gap: 5px; padding: 8px 0; }
.dropdown-menu { display: none; position: absolute; right: 0; top: 100%; background-color: var(--card-bg); border: 1px solid var(--border-color); border-radius: 8px; box-shadow: 0 10px 15px -3px rgba(0,0,0,0.5); min-width: 180px; overflow: hidden; z-index: 1100; }
.dropdown-menu a { display: block; padding: 12px 16px; color: var(--text-color); text-decoration: none; font-size: 0.9rem; transition: background 0.2s; }
.dropdown-menu a:hover { background-color: var(--border-color); }
.dropdown:hover .dropdown-menu, .dropdown:focus-within .dropdown-menu { display: block; }
main.container { max-width: 1200px; width: 100%; margin: 2rem auto; padding: 0 1rem; flex: 1; }
footer { background-color: var(--card-bg); border-top: 1px solid var(--border-color); padding: 1.5rem 1rem; text-align: center; color: var(--text-muted); font-size: 0.9rem; margin-top: auto; }
.form-control { width: 100%; padding: 0.8rem; margin-bottom: 0.8rem; border-radius: 4px; border: 1px solid var(--border-color); background: var(--bg-color); color: #fff; }
.btn { width: 100%; padding: 0.8rem; background-color: var(--primary); border: none; color: #fff; font-weight: bold; border-radius: 4px; cursor: pointer; text-align: center; text-decoration: none; display: block; }

@media (max-width: 768px) {
    .navbar { flex-direction: column; gap: 1rem; }
    .nav-menu { width: 100%; justify-content: center; }
    .dropdown-menu { right: auto; left: 50%; transform: translateX(-50%); }
}