:root {
    --primary: #0b1d3a;
    --primary-light: #162a45;
    --accent: #b81d24;
    --accent-hover: #961318;
    --text-dark: #1a202c;
    --text-muted: #4a5568;
    --bg-light: #f4f6f9;
    --border: #e2e8f0;
}

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

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-dark);
    background-color: #ffffff;
    line-height: 1.6;
}

/* Header & Navigation */
header {
    background-color: var(--primary);
    border-bottom: 2px solid var(--accent);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
}

.logo-area {
    display: flex;
    align-items: center;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background-color: var(--accent);
    margin-right: 12px;
    position: relative;
    transform: rotate(45deg);
}

.logo-text {
    color: #ffffff;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.logo-text span {
    color: #cbd5e1;
    font-weight: 300;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

nav a {
    color: #e2e8f0;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: color 0.3s ease;
    padding: 6px 0;
}

nav a:hover, nav a.active {
    color: #ffffff;
    border-bottom: 2px solid var(--accent);
}

/* Mobile Nav Toggle Button */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: #ffffff;
    font-size: 24px;
    cursor: pointer;
}

/* Hero & General Layout Structures */
.hero-sub {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #ffffff;
    padding: 60px 24px;
    text-align: center;
    border-bottom: 4px solid var(--accent);
}

.hero-sub h1 {
    font-size: 32px;
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.hero-sub p {
    color: #cbd5e1;
    max-width: 600px;
    margin: 0 auto;
    font-size: 16px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 24px;
}

.section-title {
    font-size: 28px;
    color: var(--primary);
    margin-bottom: 30px;
    position: relative;
    padding-left: 15px;
    border-left: 4px solid var(--accent);
}

.btn {
    display: inline-block;
    background-color: var(--accent);
    color: #ffffff;
    padding: 12px 28px;
    text-decoration: none;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 13px;
    letter-spacing: 1px;
    transition: background-color 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: var(--accent-hover);
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid #ffffff;
    color: #ffffff;
    margin-left: 15px;
}

.btn-secondary:hover {
    background-color: #ffffff;
    color: var(--primary);
}

/* Footer styling */
footer {
    background-color: var(--primary);
    color: #cbd5e1;
    padding: 50px 24px 20px;
    font-size: 14px;
    border-top: 4px solid var(--accent);
}

.footer-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    color: #ffffff;
    margin-bottom: 20px;
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-col p {
    margin-bottom: 12px;
    line-height: 1.5;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.2s;
}

.footer-col ul li a:hover {
    color: #ffffff;
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 20px;
    border-top: 1px solid #1e293b;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

/* Service Grids and Cards */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.card {
    background-color: var(--bg-light);
    border: 1px solid var(--border);
    padding: 35px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.card h3 {
    color: var(--primary);
    font-size: 20px;
    margin-bottom: 15px;
}

.card p {
    color: var(--text-muted);
    font-size: 15px;
    margin-bottom: 20px;
}

/* Responsive adjustments */
@media (max-width: 900px) {
    .menu-toggle {
        display: block;
    }
    nav {
        display: none;
        width: 100%;
        position: absolute;
        top: 100%;
        left: 0;
        background-color: var(--primary);
        box-shadow: 0 10px 15px rgba(0,0,0,0.1);
        border-bottom: 2px solid var(--accent);
    }
    nav.active {
        display: block;
    }
    nav ul {
        flex-direction: column;
        padding: 20px;
        gap: 15px;
    }
    .nav-container {
        flex-wrap: wrap;
    }
}