/* GLOBAL VARIABLES */
:root {
    --primary-navy: #051C2C;
    --secondary-blue: #004D71;
    --highlight-blue: #8ecae6;
    --white: #FFFFFF;
    --off-white: #F9FAFB;
    --text-gray: #4A4A4A;
    --border-gray: #E5E7EB;
    --glass: rgba(255, 255, 255, 0.95);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--white);
    color: var(--primary-navy);
    line-height: 1.6;
    overflow-x: hidden;
}

/* TYPOGRAPHY */
h1, h2, h3, h4 { font-family: 'Playfair Display', serif; font-weight: 700; }
h1 { font-size: 3.5rem; line-height: 1.15; letter-spacing: -1px; }
h2 { font-size: 2.5rem; margin-bottom: 2rem; }
h3 { font-size: 1.5rem; margin-bottom: 1rem; }
p { font-size: 1.05rem; color: var(--text-gray); margin-bottom: 1.5rem; max-width: 700px; }
.hero p { color: rgba(255, 255, 255, 0.9); font-size: 1.25rem; }

/* HEADER & NAV */
header {
    padding: 1.2rem 10%;
    position: fixed;
    width: 100%;
    background: var(--glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-family: 'Playfair Display', serif;
    font-size: 1.1rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--primary-navy);
    text-decoration: none;
}

nav a {
    margin-left: 2rem;
    text-decoration: none;
    color: var(--text-gray);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s;
}

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

.header-btn {
    background-color: var(--secondary-blue);
    color: white !important;
    padding: 0.6rem 1.2rem;
    border-radius: 4px;
    margin-left: 2rem;
}

.header-btn:hover { background-color: var(--primary-navy); }

/* SECTIONS */
section {
    padding: 8rem 10% 6rem 10%;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}
section.visible { opacity: 1; transform: translateY(0); }

.section-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: var(--secondary-blue);
    margin-bottom: 1rem;
    display: block;
}

/* HERO */
.hero {
    background: linear-gradient(170deg, var(--primary-navy) 0%, #0a2e46 100%);
    color: var(--white);
    min-height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.hero h1 { color: var(--white); max-width: 950px; margin-bottom: 2rem; }
.highlight { color: var(--highlight-blue); font-style: italic; }

.btn-primary {
    display: inline-block;
    background: var(--white);
    color: var(--primary-navy);
    padding: 1rem 2.5rem;
    text-decoration: none;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: transform 0.2s;
    border: 1px solid var(--white);
}
.btn-primary:hover { transform: translateY(-2px); background: transparent; color: var(--white); }

/* GRIDS & CARDS */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2.5rem; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }

.card {
    padding: 2.5rem;
    background: var(--white);
    border: 1px solid var(--border-gray);
    transition: all 0.3s ease;
}
.card:hover {
    border-color: var(--secondary-blue);
    box-shadow: 0 15px 35px rgba(0,0,0,0.08);
    transform: translateY(-5px);
}

/* LISTS */
.check-list { list-style: none; }
.check-list li { 
    margin-bottom: 0.8rem; 
    padding-left: 1.5rem; 
    position: relative; 
    color: var(--text-gray);
}
.check-list li::before { 
    content: '→'; 
    position: absolute; 
    left: 0; 
    color: var(--secondary-blue); 
    font-weight: bold;
}

/* FOOTER */
footer {
    padding: 5rem 10%;
    background: #05141f;
    color: rgba(255,255,255,0.6);
    border-top: 1px solid rgba(255,255,255,0.1);
}
.footer-flex { display: flex; justify-content: space-between; align-items: flex-end; }
.footer-link { color: white; text-decoration: none; border-bottom: 1px solid rgba(255,255,255,0.3); }

/* MOBILE */
@media (max-width: 768px) {
    h1 { font-size: 2.2rem; }
    .hero { padding-top: 8rem; }
    .grid-2 { grid-template-columns: 1fr; gap: 2rem; }
    header { padding: 1rem 5%; }
    nav { display: none; } /* Add JS toggle for full mobile menu later if needed */
    .footer-flex { flex-direction: column; text-align: center; gap: 2rem; align-items: center; }
}