/* Variables & Reset */
:root {
    --color-bg-primary: #051d28;
    /* Deep Teal (Background) */
    --color-bg-secondary: #0b3b4f;
    /* Brand Teal (Sections) */
    --color-text-primary: #f8fafc;
    /* Off-white */
    --color-text-secondary: #cbd5e1;
    /* Light Slate */
    --color-accent: #22d3ee;
    /* Bright Cyan */
    --color-accent-hover: #0ea5e9;
    /* Sky Blue */

    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    --container-width: 1200px;
    --border-radius-sm: 0.5rem;
    --border-radius-lg: 1rem;
}

/* ... (rest of reset) ... */

/* Hero Logo */
.hero-logo {
    display: block;
    max-width: 250px;
    height: auto;
    margin: 0 auto var(--spacing-md);
    filter: drop-shadow(0 0 20px rgba(34, 211, 238, 0.3));
    /* Subtle glow */
}

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

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

/* Header & Nav */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo a {
    display: block;
}

.logo img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-links a:not(.btn-primary-outline) {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

.nav-links a:not(.btn-primary-outline):hover {
    color: var(--color-accent);
}

/* Buttons */
.btn-primary {
    display: inline-block;
    background-color: var(--color-accent);
    color: white;
    padding: 0.75rem 2rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 1rem;
    transition: transform 0.2s, background-color 0.2s;
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
}

.btn-primary-outline {
    display: inline-block;
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    padding: 0.5rem 1.25rem;
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    font-size: 0.9rem;
}

.btn-primary-outline:hover {
    background-color: var(--color-accent);
    color: white;
}

.btn-secondary {
    display: inline-block;
    background-color: transparent;
    color: var(--color-bg-primary);
    background-color: white;
    padding: 0.75rem 2rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 1rem;
    transition: transform 0.2s;
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Hero Section */
.hero-section {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    min-height: 90vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

/* Abstract background shape */
.hero-background {
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, rgba(15, 23, 42, 0) 70%);
    border-radius: 50%;
    z-index: -1;
    pointer-events: none;
}

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

.hero-title {
    font-family: var(--font-heading);
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
}

/* Services Section */
.services-section {
    padding: var(--spacing-lg) 0;
    background-color: var(--color-bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

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

.section-header p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    transition: transform 0.3s, border-color 0.3s;
}

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

.icon-box {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.service-card p {
    color: var(--color-text-secondary);
    font-size: 1rem;
}

/* About Section */
.about-section {
    padding: var(--spacing-lg) 0;
}

.about-content {
    max-width: 800px;
    text-align: center;
}

.about-content h2 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.about-content p {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
}

/* Contact Section */
.contact-section {
    padding: var(--spacing-lg) 0;
}

.contact-card {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    color: white;
}

.contact-card h2 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
}

.contact-card p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

/* Footer */
.footer {
    padding: var(--spacing-md) 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

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

    .nav-links {
        display: none;
        /* In a real app, implementing a mobile menu would be next */
    }

    .section-header h2 {
        font-size: 2rem;
    }
}