:root {
    /* Colors */
    --color-bg-primary: #0a0f1d; /* Deep Navy/Graphite */
    --color-bg-secondary: #111827; /* Slightly lighter for cards/sections */
    --color-bg-tertiary: #1f2937;
    --color-text-primary: #ffffff;
    --color-text-secondary: #9ca3af;
    --color-accent: #0ea5e9; /* Teal/Blue-ish Accent */
    --color-accent-hover: #0284c7;
    --color-border: #374151;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Typography */
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
}

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

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: var(--line-height-base);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; letter-spacing: -0.02em; }
h3 { font-size: 1.5rem; }
p { margin-bottom: var(--spacing-sm); color: var(--color-text-secondary); }

a { text-decoration: none; color: inherit; transition: color 0.2s; }
ul { list-style: none; }

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

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--color-accent);
    color: white;
}
.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
}
.btn-secondary:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.btn-block {
    display: block;
    width: 100%;
}

.grid-2-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.grid-3-col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(10, 15, 29, 0.9); /* Translucent background */
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    padding: var(--spacing-sm) 0;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-img {
    height: 40px; /* Restrict height of large logo */
    width: auto;
}

.main-nav ul {
    display: flex;
    gap: var(--spacing-md);
}

.main-nav a {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}
.main-nav a:hover {
    color: var(--color-text-primary);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    padding-top: 80px; /* Header offset */
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('./assets/hero-bg.png');
    background-size: cover;
    background-position: center;
    z-index: -1;
    opacity: 0.6; /* Darken background for text readability */
}
.hero-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(10,15,29,0.5), var(--color-bg-primary));
}

.hero-content {
    position: relative;
    max-width: 800px;
    z-index: 1;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, #fff 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
}

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
}

/* Daivanta Way */
.daivanta-way-section {
    background-color: var(--color-bg-primary);
}

.loop-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.daivanta-loop {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    grid-template-rows: auto auto;
    gap: var(--spacing-sm);
    text-align: center;
    position: relative;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: var(--color-bg-secondary);
}

.loop-item {
    padding: var(--spacing-sm);
    font-weight: 600;
    color: var(--color-accent);
}

.loop-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
}

/* Products */
.products-section {
    background-color: var(--color-bg-secondary);
}

.product-card {
    background-color: var(--color-bg-tertiary);
    padding: var(--spacing-md);
    border-radius: 8px;
    border: 1px solid transparent;
    transition: border-color 0.2s;
}
.product-card:hover {
    border-color: var(--color-accent);
}

.icon-wrapper {
    font-size: 2rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.product-problem, .product-behavior, .product-outcome {
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}
.product-outcome {
    color: var(--color-text-primary);
    font-weight: 500;
}

/* Solutions */
.feature-block {
    padding: var(--spacing-md);
    border-left: 2px solid var(--color-accent);
    background: linear-gradient(90deg, rgba(14, 165, 233, 0.05) 0%, transparent 100%);
}

.feature-icon {
    font-size: 2rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
}

/* Journey */
.journey-steps {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.step {
    flex: 1;
    position: relative;
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--color-border);
}
.step:hover {
    border-top-color: var(--color-accent);
}

.step-number {
    font-size: 3rem;
    font-weight: 700;
    color: rgba(255,255,255,0.05);
    position: absolute;
    top: 0;
    left: 0;
    line-height: 1;
}

.cta-wrapper {
    text-align: center;
}

/* About */
.about-stat {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-size: 2rem;
    font-weight: 300;
}

.stat-box {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-accent);
}

.stat-divider {
    font-size: 2rem;
    color: var(--color-text-secondary);
    margin: var(--spacing-xs) 0;
}

/* Contact */
.contact-container {
    max-width: 600px;
}

.contact-form {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-md);
    border-radius: 8px;
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border-radius: 4px;
    border: 1px solid var(--color-border);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-family: inherit;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    font-size: 1.5rem;
}
.social-links a:hover {
    color: var(--color-accent);
}

/* Footer */
.site-footer {
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

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

.footer-links ul {
    display: flex;
    gap: var(--spacing-md);
}

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    .grid-2-col, .grid-3-col {
        grid-template-columns: 1fr;
    }
    
    .main-nav, .header-inner .btn-primary {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .journey-steps {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .footer-links ul {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    /* Mobile Menu Active State */
    .site-header.mobile-active .main-nav {
        display: block;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--color-bg-secondary);
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
    }
    
    .site-header.mobile-active .main-nav ul {
        flex-direction: column;
        align-items: center;
    }
}