/* ==========================================================================
   CSS Variables & Global Styles
   ========================================================================== */
:root {
    /* Simcard Air Professional Blue Theme */
    --primary-blue: #0056b3;       /* Bright corporate blue for buttons/links */
    --dark-blue: #0a192f;          /* Deep navy for hero backgrounds and headers */
    --light-blue: #eef4fc;         /* Very soft blue for section backgrounds */
    --accent-cyan: #00d2ff;        /* Cyan for subtle highlights and badges */
    
    --text-main: #333333;
    --text-muted: #666666;
    --white: #ffffff;
    
    --transition: all 0.3s ease-in-out;
}

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

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    line-height: 1.2;
    margin-bottom: 15px;
    color: var(--dark-blue);
}

p {
    margin-bottom: 15px;
    color: var(--text-muted);
}

a {
    text-decoration: none;
    color: var(--primary-blue);
    transition: var(--transition);
}

ul {
    list-style: none;
}

/* Container for constraining width */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 6px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: var(--white);
}

.btn-primary:hover {
    background-color: #004494;
    color: var(--white);
    box-shadow: 0 4px 10px rgba(0, 86, 179, 0.3);
}

.btn-secondary {
    background-color: var(--white);
    color: var(--dark-blue);
}

.btn-secondary:hover {
    background-color: var(--light-blue);
    color: var(--primary-blue);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.btn-outline:hover {
    background-color: var(--primary-blue);
    color: var(--white);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 a {
    color: var(--dark-blue);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.main-nav ul {
    display: flex;
    gap: 25px;
}

.main-nav a {
    color: var(--text-main);
    font-weight: 500;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--primary-blue);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
    background: linear-gradient(135deg, var(--dark-blue) 0%, #0d284f 100%);
    color: var(--white);
    padding: 100px 0;
    text-align: center;
}

.hero-section h2 {
    color: var(--white);
    font-size: 3rem;
    margin-bottom: 20px;
}

.hero-section p {
    color: #cbd5e1;
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 30px auto;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
}

/* ==========================================================================
   Core Services Section
   ========================================================================== */
.services-section {
    padding: 80px 0;
    background-color: var(--light-blue);
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.5rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: var(--white);
    padding: 40px 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    border-top: 4px solid var(--primary-blue);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 86, 179, 0.1);
}

/* ==========================================================================
   Spotlight Section (ZER0) & Opportunities
   ========================================================================== */
.spotlight-section,
.opportunities-section {
    padding: 80px 0;
}

.split-layout {
    display: flex;
    align-items: center;
    gap: 50px;
}

.split-content {
    flex: 1;
}

.badge {
    display: inline-block;
    background-color: var(--light-blue);
    color: var(--primary-blue);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 15px;
}

.feature-list {
    margin-bottom: 25px;
}

.feature-list li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 10px;
    color: var(--text-main);
    font-weight: 500;
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: bold;
}

.responsive-img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* Opportunities Boxes */
.career-box, .contact-box {
    background-color: var(--light-blue);
    padding: 50px;
    border-radius: 8px;
    text-align: center;
}

.contact-box {
    background-color: var(--dark-blue);
    color: var(--white);
}

.contact-box h2, .contact-box p {
    color: var(--white);
}

.contact-box .btn-outline {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.contact-box .btn-outline:hover {
    background-color: var(--accent-cyan);
    color: var(--dark-blue);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    background-color: #05101e;
    color: #8892b0;
    padding: 60px 0 20px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    color: var(--white);
    margin-bottom: 10px;
}

.footer-links h4 {
    color: var(--white);
    margin-bottom: 15px;
}

.footer-links ul li {
    margin-bottom: 8px;
}

.footer-links a {
    color: #8892b0;
}

.footer-links a:hover {
    color: var(--accent-cyan);
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid #1a2a40;
    padding-top: 20px;
    font-size: 0.9rem;
}

/* ==========================================================================
   Responsive Design (Mobile & Tablets)
   ========================================================================== */
@media (max-width: 768px) {
    .site-header .container {
        flex-direction: column;
        gap: 15px;
    }
    
    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero-section h2 {
        font-size: 2.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .split-layout {
        flex-direction: column;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}