:root {
    --navy: #0f172a;
    --navy-light: #172033;
    --slate: #475569;
    --light: #f5f7fa;
    --blue: #3b82f6;
    --blue-dark: #2563eb;
    --white: #ffffff;
    --border: #e2e8f0;
}


/* Base */

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
                 Roboto, Helvetica, Arial, sans-serif;
    color: var(--navy);
    line-height: 1.7;
}

.section-padding {
    padding: 110px 0;
}

.section-label {
    font-size: 0.78rem;
    letter-spacing: 0.18rem;
    font-weight: 700;
    color: var(--blue-dark);
    margin-bottom: 1rem;
}


/* Navigation */

.navbar {
    background: rgba(15, 23, 42, 0.96);
    padding: 18px 0;
    backdrop-filter: blur(8px);
}

.navbar-brand {
    font-size: 1.25rem;
    letter-spacing: 0.02rem;
}

.nav-link {
    margin-left: 20px;
    font-weight: 500;
}


/* Hero */

.hero {
    background:
        radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.18), transparent 35%),
        var(--navy);
    color: var(--white);
}

.hero h1 {
    max-width: 1000px;
    line-height: 1.05;
}

.eyebrow {
    color: #93c5fd;
    font-weight: 700;
    letter-spacing: 0.16rem;
    font-size: 0.78rem;
}

.accent-text {
    color: #60a5fa;
}

.hero-copy {
    font-size: 1.3rem;
    max-width: 800px;
    color: #cbd5e1;
    line-height: 1.7;
}


/* Buttons */

.btn {
    border-radius: 6px;
    padding: 12px 24px;
    font-weight: 600;
}

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

.btn-primary:hover {
    background-color: var(--blue-dark);
    border-color: var(--blue-dark);
}


/* Light Sections */

.light-section {
    background: var(--light);
}


/* Service Cards */

.service-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 32px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(15, 23, 42, 0.08);
}

.service-number {
    color: var(--blue);
    font-weight: 700;
    margin-bottom: 28px;
}

.service-card h3 {
    font-weight: 700;
    margin-bottom: 15px;
}

.service-card p {
    color: var(--slate);
    margin-bottom: 0;
}


/* Projects */

.project-card {
    border-top: 1px solid var(--border);
    padding: 38px 0;
}

.project-card:last-child {
    border-bottom: 1px solid var(--border);
}

.project-card h3 {
    font-weight: 700;
}

.project-card p {
    color: var(--slate);
    margin-bottom: 0;
}

.project-type {
    font-size: 0.75rem;
    letter-spacing: 0.1rem;
    font-weight: 700;
    color: var(--blue-dark) !important;
    margin-bottom: 8px !important;
}

.project-link {
    color: var(--blue-dark);
    font-weight: 700;
}


/* Skills */

.dark-section {
    background: var(--navy);
}

.skill-group {
    padding: 20px 0;
    border-bottom: 1px solid #334155;
}

.skill-group:first-child {
    padding-top: 0;
}

.skill-group h3 {
    color: var(--white);
    font-size: 1.15rem;
    font-weight: 700;
}

.skill-group p {
    color: #cbd5e1;
    margin-bottom: 0;
}


/* Philosophy */

.philosophy-section {
    padding: 130px 0;
    background: var(--white);
}

.philosophy-section .lead {
    color: var(--slate);
}


/* Contact */

.contact-section {
    background: var(--navy-light);
    padding: 100px 0;
}

.contact-copy {
    max-width: 700px;
    color: #cbd5e1;
    font-size: 1.1rem;
    margin-top: 20px;
}


/* Footer */

footer {
    background: #090f1d;
    color: #94a3b8;
    padding: 30px 0;
    font-size: 0.9rem;
}


/* Mobile */

@media (max-width: 991px) {

    .hero h1 {
        font-size: 3.4rem;
    }

    .section-padding {
        padding: 80px 0;
    }

    .nav-link {
        margin-left: 0;
        padding: 10px 0;
    }

}

@media (max-width: 576px) {

    .hero h1 {
        font-size: 2.65rem;
    }

    .hero-copy {
        font-size: 1.1rem;
    }

    .section-padding {
        padding: 65px 0;
    }

}