/* CSS Variables & Design Tokens */
:root {
    --font-main: 'Inter', sans-serif;
    --font-heading: 'Space Grotesk', sans-serif;
    
    --color-bg: #ffffff;
    --color-text: #111111;
    --color-text-light: #555555;
    --color-accent: #000000;
    --color-border: #e0e0e0;
    --color-card-bg: #f9f9f9;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    
    --container-width: 1200px;
    --border-radius: 4px;
    --transition: 0.3s ease;
}

/* Global Reset & Typography */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    border: 2px solid var(--color-accent);
    cursor: pointer;
}

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

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

.btn-outline {
    background: transparent;
    color: var(--color-accent);
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
    padding: 1.5rem 0;
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -0.03em;
}

.nav-links a {
    margin-left: 2rem;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

.mobile-toggle {
    display: none;
}

/* Hero Section */
.hero-section {
    padding-top: 180px;
    padding-bottom: var(--spacing-xl);
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 2rem);
    color: var(--color-text-light);
    font-weight: 400;
    margin-bottom: var(--spacing-md);
    max-width: 800px;
}

.hero-intro {
    font-size: 1.25rem;
    max-width: 700px;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
}

/* Services / What I Do */
.services-section {
    background: var(--color-card-bg);
}

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

.service-card {
    background: white;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    transition: transform var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-accent);
    display: inline-block;
    padding-bottom: 0.5rem;
}

/* Work / Experience Bento Grid */
.work-section .section-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.experience-bento-grid {
    display: grid;
    grid-template-columns: 1fr; /* Mobile default */
    gap: var(--spacing-md);
}

.bento-card {
    background: white;
    border: 1px solid var(--color-border);
    padding: var(--spacing-md);
    position: relative;
    overflow: hidden;
}

.bento-card.large {
    background: #111;
    color: white;
}

.bento-card.large .role,
.bento-card.large .company,
.bento-card.large h4,
.bento-card.large p,
.bento-card.large li {
    color: white; /* Ensure text is visible on dark background */
}

/* Specific styling for the HCL card to make it pop */
.bento-card.large h4 {
    font-size: 1.8rem;
    line-height: 1.3;
}

.card-header {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.8;
}

.card-header span {
    margin-right: 1rem;
}

.card-body h4 {
    font-size: 1.4rem;
    margin-bottom: var(--spacing-sm);
}

.details-list {
    margin-top: var(--spacing-sm);
}

.details-list li {
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
    opacity: 0.9;
}

.details-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.bento-card.large .details-list li::before {
    color: white;
}

/* Skills Marquee */
.skills-section {
    padding: var(--spacing-lg) 0;
    background: var(--color-accent);
    color: white;
    overflow: hidden;
}

.marquee-container {
    width: 100%;
    overflow: hidden;
    white-space: nowrap;
}

.marquee-content {
    display: inline-block;
    animation: marquee 30s linear infinite;
}

.marquee-content span {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    margin-right: 4rem;
    text-transform: uppercase;
    opacity: 0.8;
}

@keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/* Footer */
.footer {
    padding: var(--spacing-lg) 0 var(--spacing-md);
    background: var(--color-card-bg);
}

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

.contact-item {
    margin-bottom: 1rem;
    display: flex;
    flex-direction: column;
}

.contact-item .label {
    font-size: 0.85rem;
    text-transform: uppercase;
    color: var(--color-text-light);
    margin-bottom: 0.25rem;
}

.contact-item .value {
    font-size: 1.2rem;
    font-weight: 500;
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.9rem;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* Desktop Grid Updates */
@media (min-width: 900px) {
    .experience-bento-grid {
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: auto auto;
    }
    
    .bento-card.large {
        grid-column: span 2;
        grid-row: span 2;
    }
    
    /* Make the second card fill the remaining space or just stack nicely */
    .bento-card:not(.large) {
        grid-column: span 1;
        grid-row: span 2;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none; /* Simplification for generating quickly */
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
}