:root {
    /* Color Palette - Dark Mode Tech/Health Vibe */
    --bg-primary: #0f172a;
    /* Slate 900 */
    --bg-secondary: #1e293b;
    /* Slate 800 */
    --bg-card: #334155;
    /* Slate 700 */

    --text-primary: #f8fafc;
    /* Slate 50 */
    --text-secondary: #94a3b8;
    /* Slate 400 */

    --accent-primary: #38bdf8;
    /* Sky 400 (Tech) */
    --accent-secondary: #34d399;
    /* Emerald 400 (Health) */
    --accent-tertiary: #f472b6;
    /* Pink 400 (Travel/Vibe) */

    --border-color: #475569;
    /* Slate 600 */

    /* Typography */
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    --font-heading: 'Outfit', system-ui, -apple-system, sans-serif;

    /* Spacing */
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    line-height: 1.2;
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
}

/* Navigation */
.navbar {
    background-color: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo span {
    color: var(--accent-primary);
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
}

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

/* Specific active colors for sections */
body:has(a[href="gear.html"].active) .nav-links a.active {
    color: var(--accent-secondary);
}

body:has(a[href="travel.html"].active) .nav-links a.active {
    color: var(--accent-tertiary);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: radial-gradient(circle at top right, rgba(56, 189, 248, 0.1), transparent 40%),
        radial-gradient(circle at bottom left, rgba(52, 211, 153, 0.1), transparent 40%);
    padding-top: 70px;
    /* Offset for fixed nav */
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(to right, var(--accent-primary), var(--accent-secondary));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary {
    background-color: var(--accent-primary);
    color: var(--bg-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(56, 189, 248, 0.3);
    color: var(--bg-primary);
}

/* Content Pillars */
.pillars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.pillar-card {
    background-color: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: transform var(--transition-fast);
}

.pillar-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
}

.pillar-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

/* Gear Section (Preview) */
.gear-preview {
    background-color: var(--bg-secondary);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.product-card {
    background-color: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: transform var(--transition-fast);
}

.product-card:hover {
    transform: translateY(-5px);
}

.product-image {
    width: 100%;
    height: 200px;
    background-color: var(--bg-primary);
    /* Placeholder for image */
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.product-info {
    padding: var(--spacing-md);
}

.product-title {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.product-price {
    color: var(--accent-secondary);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    display: block;
}

/* Footer */
footer {
    background-color: var(--bg-secondary);
    padding: var(--spacing-lg) 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-xl);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        display: none;
        /* Simple hide for now, will add toggle later */
    }
}