:root {
    /* Color Palette - Premium Dark Theme */
    --bg-color: #0c0c0c;
    --surface-color: #1a1a1a;
    --text-primary: #f5f5f5;
    --text-secondary: #a3a3a3;
    --accent: #d4af37; /* Subtle elegant gold */
    --accent-hover: #e8c54a;
    --border-color: rgba(255, 255, 255, 0.1);

    /* Typography */
    --font-primary: 'Outfit', sans-serif;
    --font-serif: 'Playfair Display', serif;
    
    /* Spacing & Layout */
    --max-width: 1400px;
    --padding-x: 5%;
    
    /* Transitions */
    --transition-fast: 0.3s cubic-bezier(0.25, 1, 0.5, 1);
    --transition-slow: 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

/* Typography Utilities */
h1, h2, h3 {
    font-weight: 600;
    line-height: 1.1;
}

.italic-serif {
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 600;
    color: var(--accent);
}

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

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 2rem var(--padding-x);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    mix-blend-mode: difference;
    transition: padding var(--transition-fast), background var(--transition-fast);
}

.navbar.scrolled {
    padding: 1rem var(--padding-x);
    background: rgba(12, 12, 12, 0.9);
    backdrop-filter: blur(10px);
    mix-blend-mode: normal;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.nav-links {
    display: flex;
    gap: 3rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-color) !important;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    transition: transform var(--transition-fast), background var(--transition-fast);
}

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

.hamburger {
    display: none;
    cursor: pointer;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 0 var(--padding-x);
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 900px;
    z-index: 10;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 3px;
}

.hero h1 {
    font-size: clamp(3rem, 8vw, 6.5rem);
    letter-spacing: -2px;
    margin-bottom: 2rem;
}

.hero .description {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 4rem;
}

.scroll-down {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.scroll-down svg {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(10px); }
    60% { transform: translateY(5px); }
}

/* Abstract visual elements in hero */
.hero-visual {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.abstract-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 10s ease-in-out infinite alternate;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: var(--accent);
    top: 20%;
    right: 10%;
}

.shape-2 {
    width: 500px;
    height: 500px;
    background: #333;
    bottom: -10%;
    right: -10%;
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-50px, 50px) scale(1.1); }
}

/* Animations */
.animate-up {
    opacity: 0;
    transform: translateY(40px);
    animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Portfolio Section */
.portfolio-section {
    padding: 8rem var(--padding-x);
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-header {
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: clamp(2rem, 5vw, 4rem);
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.badge {
    font-size: 1rem;
    font-weight: 400;
    padding: 0.4rem 1.2rem;
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-secondary);
}

/* Filters */
.portfolio-controls {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 1.1rem;
    cursor: pointer;
    position: relative;
    padding-bottom: 0.5rem;
    transition: color var(--transition-fast);
}

.filter-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--accent);
    transition: width var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
    color: var(--text-primary);
}

.filter-btn.active::after {
    width: 100%;
}

/* Portfolio Grid */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 3rem;
}

.portfolio-card {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    group;
}

.card-image-wrapper {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/5;
    background: var(--surface-color);
    border-radius: 12px;
}

.card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.portfolio-card:hover .card-image {
    transform: scale(1.05);
}

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.portfolio-card:hover .card-overlay {
    opacity: 1;
}

.card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2rem;
    transform: translateY(20px);
    opacity: 0;
    transition: all var(--transition-fast);
}

.portfolio-card:hover .card-content {
    transform: translateY(0);
    opacity: 1;
}

.card-category {
    font-size: 0.9rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
    display: block;
}

.card-title {
    font-size: 1.8rem;
    font-weight: 600;
}

/* Loading state */
.loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 0;
    color: var(--text-secondary);
}

/* About Section */
.about-section {
    padding: 8rem var(--padding-x);
    background: var(--surface-color);
}

.about-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.about-text h2 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: 2rem;
    line-height: 1.2;
}

.about-text p {
    color: var(--text-secondary);
    font-size: 1.2rem;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.stat-num {
    display: block;
    font-size: 4rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Footer Section */
.footer {
    padding: 8rem var(--padding-x) 4rem;
    text-align: center;
}

.footer-content h2 {
    font-size: clamp(2.5rem, 6vw, 5rem);
    margin-bottom: 2rem;
    letter-spacing: -1px;
}

.email-link {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    position: relative;
    display: inline-block;
    margin-bottom: 6rem;
}

.email-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.5s ease;
}

.email-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 4rem;
}

.social-links a {
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.9rem;
    position: relative;
}

.social-links a:hover {
    color: var(--accent);
}

.copyright {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 900px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none; /* In a full build, add mobile menu active state */
    }
    .hamburger {
        display: block;
    }
    .bar {
        display: block;
        width: 25px;
        height: 2px;
        margin: 5px auto;
        background-color: var(--text-primary);
        transition: all 0.3s ease-in-out;
    }
    .hero-visual {
        opacity: 0.2;
    }
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
}