:root {
    --primary-blue: #004a99;
    --dark-blue: #002d5e;
    --light-gray: #f4f7f6;
    --text-color: #333;
    --white: #ffffff;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Nav */
header {
    background: var(--white);
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav { display: flex; justify-content: space-between; align-items: center; }

.logo { font-size: 1.5rem; font-weight: 700; color: var(--dark-blue); }
.logo span { color: var(--primary-blue); }

nav ul { display: flex; list-style: none; align-items: center; }
nav ul li { margin-left: 25px; }
nav ul li a { text-decoration: none; color: var(--text-color); font-weight: 500; }

.btn-help {
    background: var(--primary-blue);
    color: var(--white) !important;
    padding: 8px 15px;
    border-radius: 5px;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0,45,94,0.8), rgba(0,45,94,0.8)), url('https://images.unsplash.com/photo-1518770660439-4636190af475?auto=format&fit=crop&w=1350&q=80');
    background-size: cover;
    color: var(--white);
    padding: 100px 0;
    text-align: center;
}

.hero h1 { font-size: 2.5rem; margin-bottom: 20px; }
.btn-primary {
    display: inline-block;
    background: var(--primary-blue);
    color: var(--white);
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 20px;
}

/* Services Grid */
.services { background: var(--light-gray); padding: 80px 0; }
.services h2 { text-align: center; margin-bottom: 40px; }

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.card {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

/* Footer */
footer { background: var(--dark-blue); color: var(--white); padding: 60px 0 20px; }
.footer-content { display: flex; justify-content: space-between; margin-bottom: 40px; }
.footer-links a { display: block; color: #ccc; text-decoration: none; margin-bottom: 10px; }
.copyright { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; text-align: center; font-size: 0.9rem; }

/* Responsive */
@media (max-width: 768px) {
    nav ul { display: none; } /* V reálném webu by zde bylo mobilní menu */
    .hero h1 { font-size: 1.8rem; }
}