:root {
    /* Light/Clean Professional Theme */
    --bg-color: #f8fafc;
    /* Very light grey/white */
    --surface-color: #ffffff;
    /* Pure white for cards */
    --text-color: #1e293b;
    /* Dark slate for primary text */
    --text-muted: #64748b;
    /* Muted slate for secondary text */
    --primary-color: #0f172a;
    /* Midnight blue for accents/buttons */
    --accent-color: #2563eb;
    /* Royal blue for links */
    --border-color: #e2e8f0;
    /* Light border */

    --font-heading: 'Inter', system-ui, -apple-system, sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    margin: 0;
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-align: center;
    /* Center everything by default as requested */
}

/* Header */
.glass-header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 1rem 0;
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    /* Subtle shadow for depth */
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.02em;
}

.logo-img {
    height: 64px;
    width: auto;
    /* Reset filter for light-on-dark logo if original is dark. */
    /* Assuming original logo was designed for light by default, or we use none */
    filter: none;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2.5rem;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.cta-button {
    background: var(--primary-color);
    color: #ffffff !important;
    padding: 0.6rem 1.25rem;
    border-radius: 6px;
    font-weight: 600 !important;
    transition: all 0.2s;
}

.cta-button:hover {
    background: #334155;
    transform: translateY(-1px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* Main Content */
main {
    max-width: 1000px;
    /* Constrain width for centered look */
    margin: 0 auto;
    padding: 8rem 1.5rem 4rem;
}

.hero {
    min-height: 60vh;
    /* Reduced height for lighter feel */
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 4rem 0;
}

.hero h1 {
    font-size: 3.5rem;
    /* Large but not huge */
    margin-bottom: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: var(--primary-color);
}

.highlight {
    color: var(--text-color);
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2.5rem;
    font-weight: 400;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.primary-btn,
.secondary-btn {
    padding: 0.8rem 2rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.2s;
    display: inline-block;
}

.primary-btn {
    background: var(--primary-color);
    color: #ffffff;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.primary-btn:hover {
    background: #334155;
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.secondary-btn {
    background: #ffffff;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.secondary-btn:hover {
    border-color: var(--text-muted);
    background: #f1f5f9;
}

/* Sections */
section {
    margin-bottom: 6rem;
}

h2 {
    font-size: 2.25rem;
    margin-bottom: 1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--primary-color);
}

.section-subtitle {
    margin-bottom: 3rem;
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.glass-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 3rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
    /* Soft shadow */
    margin-bottom: 2rem;
}

/* About Section List */
.about-section ul {
    justify-content: center;
}

.about-section ul li {
    background: var(--bg-color);
    border: 1px solid var(--border-color) !important;
    padding: 0.6rem 1.2rem;
    color: var(--text-color) !important;
    border-radius: 20px;
    /* Pill shape */
    font-size: 0.95rem;
    font-weight: 500;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    text-align: center;
}

.service-card {
    background: var(--surface-color);
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: transform 0.2s, box-shadow 0.2s;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05);
    border-color: var(--border-color);
}

.service-card .icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    background: var(--bg-color);
    width: 80px;
    height: 80px;
    line-height: 80px;
    border-radius: 50%;
    margin-left: auto;
    margin-right: auto;
}

.service-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color) !important;
}

.service-card p {
    color: var(--text-muted);
}

.tech-management-section {
    border: none;
    box-shadow: none;
    background: transparent;
    padding: 0;
}

.contact-section {
    max-width: 600px;
    margin: 0 auto 6rem;
}

.contact-info a {
    color: var(--accent-color) !important;
    font-weight: 500;
    text-decoration: none;
}

.contact-info a:hover {
    text-decoration: underline;
}

footer {
    padding: 3rem 1.5rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
    background: var(--bg-color);
}

footer a {
    color: var(--primary-color);
    font-weight: 500;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {

    /* Header */
    .glass-header {
        padding: 1rem;
        position: relative;
        /* Unstick header on mobile if simpler, or keep fixed */
    }

    nav {
        flex-direction: column;
        gap: 1rem;
        padding: 0;
    }

    .nav-links {
        gap: 1.5rem;
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
        font-size: 0.9rem;
    }

    /* Hero */
    .hero {
        padding: 2rem 0;
        min-height: auto;
    }

    .hero h1 {
        font-size: 2.5rem;
        /* Smaller for mobile */
    }

    .hero p {
        font-size: 1.1rem;
        padding: 0 1rem;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }

    .primary-btn,
    .secondary-btn {
        width: 100%;
        /* Full width buttons on mobile */
        box-sizing: border-box;
    }

    /* Sections */
    .glass-card {
        padding: 2rem 1.5rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
        /* Stack cards */
    }

    .about-section ul {
        flex-direction: column;
        gap: 0.5rem;
    }

    .about-section ul li {
        width: 100%;
        box-sizing: border-box;
    }

    main {
        padding-top: 2rem;
    }
}