/* Reset */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary-blue: #0F1B3C;
    --royal-blue: #1E3A8A;
    --accent-gold: #D4AF37;
    --light-gold: #F59E0B;
    --champagne: #F7E7CE;
    --dark-gray: #374151;
    --medium-gray: #6B7280;
    --light-gray: #F8FAFC;
    --white: #ffffff;
    --shadow: 0 4px 20px rgba(15,27,60,0.12);
    --glow-shadow: 0 8px 32px rgba(212,175,55,0.15);
    --max-width: 1200px;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--dark-gray);
    background: var(--white);
    overflow-x: hidden;
}

a { color: var(--royal-blue); }
a:hover { color: var(--accent-gold); }

code, pre {
    font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}
nav.scrolled { padding: 0.5rem 0; }

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary-blue);
    text-decoration: none;
    letter-spacing: 0.01em;
}
.nav-logo img { height: 32px; width: 32px; margin-right: 0.6rem; object-fit: contain; }

.nav-links { display: flex; list-style: none; gap: 1.75rem; align-items: center; }
.nav-links a {
    color: var(--dark-gray);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--accent-gold); }
.nav-links a.nav-cta {
    background: var(--primary-blue);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 999px;
    font-weight: 600;
}
.nav-links a.nav-cta:hover { background: var(--accent-gold); color: var(--white); }

.mobile-menu { display: none; flex-direction: column; cursor: pointer; }
.mobile-menu span {
    width: 25px; height: 3px;
    background: var(--dark-gray);
    margin: 3px 0;
    transition: 0.3s;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.85rem 1.75rem;
    border-radius: 999px;
    font-weight: 600;
    text-decoration: none;
    font-size: 0.95rem;
    transition: all 0.25s ease;
    border: 1px solid transparent;
}
.btn-primary {
    background: var(--primary-blue);
    color: var(--white);
}
.btn-primary:hover {
    background: var(--accent-gold);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(212,175,55,0.25);
}
.btn-secondary {
    background: transparent;
    color: var(--primary-blue);
    border-color: rgba(15,27,60,0.2);
}
.btn-secondary:hover {
    background: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
}

/* Hero */
.hero {
    padding: 9rem 2rem 5rem;
    background:
        radial-gradient(circle at 20% 20%, rgba(212,175,55,0.10), transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(30,58,138,0.10), transparent 50%),
        linear-gradient(135deg, var(--primary-blue) 0%, #122146 100%);
    color: var(--white);
    text-align: center;
}
.hero-inner { max-width: 880px; margin: 0 auto; }
.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.25rem;
    letter-spacing: -0.01em;
}
.hero .lede {
    font-size: 1.25rem;
    line-height: 1.55;
    opacity: 0.95;
    margin-bottom: 2.25rem;
}
.hero .hero-tag {
    display: inline-block;
    background: rgba(212,175,55,0.15);
    color: var(--accent-gold);
    border: 1px solid rgba(212,175,55,0.4);
    padding: 0.4rem 1rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1.5rem;
}
.hero-cta { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.hero-cta .btn-secondary {
    border-color: rgba(255,255,255,0.4);
    color: var(--white);
}
.hero-cta .btn-secondary:hover {
    background: var(--white);
    color: var(--primary-blue);
}

/* Section primitives */
.section { padding: 5rem 2rem; }
.section--dark { background: var(--primary-blue); color: var(--white); }
.section--tint { background: var(--light-gray); }

.container { max-width: var(--max-width); margin: 0 auto; }

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    color: var(--primary-blue);
    text-align: center;
    margin-bottom: 0.5rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}
.section--dark .section-title { color: var(--white); }
.section-subtitle {
    text-align: center;
    color: var(--medium-gray);
    font-size: 1.1rem;
    max-width: 720px;
    margin: 0 auto 3rem;
}
.section--dark .section-subtitle { color: rgba(255,255,255,0.85); }

.eyebrow {
    display: block;
    text-align: center;
    color: var(--accent-gold);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 0.75rem;
}

/* Thesis block */
.thesis {
    max-width: 820px;
    margin: 0 auto;
    text-align: center;
}
.thesis p {
    font-size: 1.15rem;
    line-height: 1.75;
    color: var(--dark-gray);
    margin-bottom: 1rem;
}
.section--dark .thesis p { color: rgba(255,255,255,0.9); }
.thesis .pull {
    font-size: 1.5rem;
    line-height: 1.45;
    color: var(--primary-blue);
    font-weight: 600;
    padding: 1.5rem 0;
    border-top: 1px solid rgba(212,175,55,0.3);
    border-bottom: 1px solid rgba(212,175,55,0.3);
    margin: 2rem 0;
}
.section--dark .thesis .pull { color: var(--accent-gold); border-color: rgba(212,175,55,0.5); }

/* Pillars grid */
.pillars {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}
.pillar {
    background: var(--white);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid rgba(212,175,55,0.15);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}
.pillar:hover {
    transform: translateY(-4px);
    box-shadow: var(--glow-shadow);
    border-color: rgba(212,175,55,0.4);
}
.pillar-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--champagne) 0%, rgba(212,175,55,0.1) 100%);
    color: var(--accent-gold);
    margin-bottom: 1rem;
}
.pillar-icon svg { width: 28px; height: 28px; }
.pillar h3 {
    color: var(--primary-blue);
    font-size: 1.2rem;
    margin-bottom: 0.6rem;
    font-weight: 700;
}
.pillar p {
    color: var(--medium-gray);
    font-size: 1rem;
    line-height: 1.55;
}

/* Case study cards */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.75rem;
    margin-top: 2.5rem;
}
.case-card {
    background: var(--white);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid rgba(15,27,60,0.08);
    border-top: 3px solid var(--accent-gold);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}
.case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--glow-shadow);
}
.case-card .case-tag {
    color: var(--accent-gold);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.case-card h3 {
    color: var(--primary-blue);
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0;
}
.case-card .case-stack {
    color: var(--medium-gray);
    font-size: 0.85rem;
    font-family: 'JetBrains Mono', monospace;
}
.case-card p {
    color: var(--dark-gray);
    font-size: 0.98rem;
    line-height: 1.6;
    margin: 0;
}
.case-card .case-link {
    margin-top: auto;
    padding-top: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
}

/* Code block */
.code-block {
    background: var(--primary-blue);
    color: #E5E7EB;
    border-radius: 12px;
    padding: 1.75rem;
    overflow-x: auto;
    box-shadow: var(--shadow);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}
.code-block .c-key { color: var(--accent-gold); }
.code-block .c-str { color: #A7F3D0; }
.code-block .c-com { color: #9CA3AF; font-style: italic; }

/* Two-col split */
.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    margin-top: 2.5rem;
}
.split h3 { color: var(--primary-blue); font-size: 1.6rem; margin-bottom: 1rem; }
.split p { color: var(--dark-gray); margin-bottom: 0.85rem; }
.section--dark .split h3 { color: var(--white); }
.section--dark .split p { color: rgba(255,255,255,0.85); }

/* Enterprise capability list */
.cap-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-top: 2.5rem;
}
.cap-item {
    background: var(--white);
    border-left: 3px solid var(--accent-gold);
    padding: 1.25rem 1.5rem;
    border-radius: 0 12px 12px 0;
    box-shadow: var(--shadow);
}
.cap-item h4 {
    color: var(--primary-blue);
    font-size: 1.05rem;
    margin-bottom: 0.4rem;
    font-weight: 700;
}
.cap-item p {
    color: var(--medium-gray);
    font-size: 0.95rem;
    margin: 0;
}

/* Contact / CTA panel */
.cta-panel {
    background: linear-gradient(135deg, var(--primary-blue) 0%, #142150 100%);
    color: var(--white);
    border-radius: 20px;
    padding: 3rem 2rem;
    text-align: center;
    max-width: 760px;
    margin: 3rem auto 0;
    box-shadow: var(--glow-shadow);
}
.cta-panel h2 { font-size: 1.75rem; margin-bottom: 0.75rem; color: var(--white); }
.cta-panel p { color: rgba(255,255,255,0.9); margin-bottom: 1.5rem; }
.cta-panel .btn-primary { background: var(--accent-gold); }
.cta-panel .btn-primary:hover { background: var(--white); color: var(--primary-blue); }

/* Cross-link cards */
.cross-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 2.5rem;
}
.cross-link {
    background: var(--white);
    border: 1px solid rgba(212,175,55,0.2);
    border-radius: 14px;
    padding: 1.5rem;
    text-decoration: none;
    color: inherit;
    display: block;
    transition: all 0.25s ease;
}
.cross-link:hover {
    transform: translateY(-3px);
    border-color: var(--accent-gold);
    box-shadow: var(--glow-shadow);
}
.cross-link .cross-eyebrow {
    color: var(--accent-gold);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.4rem;
}
.cross-link h4 { color: var(--primary-blue); font-size: 1.15rem; margin-bottom: 0.4rem; }
.cross-link p { color: var(--medium-gray); font-size: 0.95rem; margin: 0; }

/* Footer */
.site-footer {
    background: var(--primary-blue);
    color: rgba(255,255,255,0.85);
    padding: 2.5rem 2rem;
    text-align: center;
    font-size: 0.9rem;
}
.site-footer a { color: var(--accent-gold); text-decoration: none; }
.site-footer a:hover { color: var(--white); }
.footer-row { max-width: var(--max-width); margin: 0 auto; }
.footer-meta { margin-top: 0.75rem; opacity: 0.6; font-size: 0.8rem; }

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 1.5rem 2rem;
        gap: 1rem;
        box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
    }
    .nav-links.active { transform: translateY(0); }
    .mobile-menu { display: flex; }
    .split { grid-template-columns: 1fr; gap: 2rem; }
    .cross-links { grid-template-columns: 1fr; }
    .hero { padding: 7rem 1.25rem 4rem; }
    .section { padding: 4rem 1.25rem; }
}

/* Fade-in for scroll reveal — progressive enhancement: only hide if JS-capable */
.js .fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.js .fade-in.visible { opacity: 1; transform: translateY(0); }