:root {
    --primary: #005B96;
    --secondary: #00A8B5;
    --accent-coral: #FF7F50;
    --bg-white: #ffffff;
    --bg-sand: #F9F7F2;
    --text-main: #171717;
    --text-muted: #4a4a4a;
    --border-color: #e5e5e5;
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --transition: all 0.3s ease;
}

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

body {
    background-color: var(--bg-white);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}

h1 { font-size: 3rem; margin-bottom: 1.5rem; }
h2 { font-size: 2.25rem; margin-bottom: 1.25rem; }

p { margin-bottom: 1rem; color: var(--text-muted); }

/* Layout & Containers */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 0;
}

section {
    padding: 5rem 0;
}

/* Header & Navigation */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

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

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

/* Hero Section */
.hero {
    background: linear-gradient(rgba(255, 255, 255, 0.8), rgba(249, 247, 242, 0.8)), 
                url('https://images.unsplash.com/photo-1589553416260-158fb997537b?auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    padding: 8rem 0;
    text-align: center;
}

.hero h1 {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.875rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--primary);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: #004471;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 91, 150, 0.3);
}

.btn-secondary {
    background-color: var(--secondary);
    color: #ffffff;
}

.btn-secondary:hover {
    background-color: #008c98;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 168, 181, 0.3);
}

.btn-cta {
    background-color: var(--accent-coral);
    color: #ffffff;
}

.btn-cta:hover {
    background-color: #e66b42;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 127, 80, 0.3);
}

/* Cards & Content Blocks */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--bg-white);
    padding: 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: var(--transition);
}

.card:hover {
    border-color: var(--secondary);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.card h3 {
    margin-bottom: 1rem;
    color: var(--primary);
}

/* Accents & Special Sections */
.bg-sand-section {
    background-color: var(--bg-sand);
}

.expert-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(0, 168, 181, 0.1);
    color: var(--secondary);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

/* Footer */
footer {
    background: var(--primary);
    color: #ffffff;
    padding: 4rem 0 2rem;
}

footer a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

footer a:hover {
    color: var(--secondary);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

/* Responsive Utilities */
@media (max-width: 768px) {
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }
    .nav-links { display: none; }
    .hero { padding: 4rem 0; }
}