:root {
    /* Colors */
    --color-bg-start: hsl(230, 35%, 7%);
    --color-bg-end: hsl(260, 40%, 12%);
    --color-primary: hsl(190, 95%, 55%);
    --color-primary-light: hsl(190, 95%, 65%);
    --color-secondary: hsl(280, 85%, 65%);
    --color-text: hsl(0, 0%, 95%);
    --color-text-muted: hsl(0, 0%, 70%);
    --color-glass: rgba(255, 255, 255, 0.05);
    --color-glass-border: rgba(255, 255, 255, 0.1);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 3rem;
    --font-size-4xl: 4rem;

    /* Effects */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 40px rgba(var(--glow-rgb), 0.3);

    --glow-rgb: 100, 200, 255;
}

/* Reset & Base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background: linear-gradient(135deg, var(--color-bg-start) 0%, var(--color-bg-end) 100%);
    background-attachment: fixed;
    overflow-x: hidden;
}

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

/* Stars Background */
.stars {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.stars::before,
.stars::after {
    content: '';
    position: absolute;
    width: 2px;
    height: 2px;
    background: white;
    border-radius: 50%;
    box-shadow:
        100px 200px white, 200px 100px white, 300px 300px white,
        400px 150px white, 500px 250px white, 600px 100px white,
        700px 300px white, 150px 350px white, 250px 450px white,
        350px 150px white, 450px 350px white, 550px 200px white,
        50px 400px white, 650px 350px white, 750px 150px white,
        180px 280px rgba(255, 255, 255, 0.5), 380px 380px rgba(255, 255, 255, 0.5),
        580px 180px rgba(255, 255, 255, 0.5), 280px 480px rgba(255, 255, 255, 0.5);
    animation: twinkle 3s infinite ease-in-out;
}

.stars::after {
    animation-delay: 1.5s;
}

@keyframes twinkle {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl) 0;
}

.hero-content {
    text-align: center;
    z-index: 1;
}

.hero-title {
    margin-bottom: var(--spacing-md);
}

.greeting {
    display: block;
    font-size: var(--font-size-lg);
    font-weight: 300;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.name {
    display: block;
    font-size: clamp(var(--font-size-3xl), 8vw, var(--font-size-4xl));
    font-weight: 900;
    line-height: 1.1;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.4s forwards;
}

.role {
    position: relative;
    display: inline-block;
}

.role::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: 2px;
}

.hero-description {
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    line-height: 1.8;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.6s forwards;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.8s forwards;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: white;
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(var(--glow-rgb), 0.4);
}

.btn-secondary {
    background: var(--color-glass);
    color: var(--color-text);
    border: 1px solid var(--color-glass-border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    animation: bounce 2s infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(-10px);
    }
}

/* Portfolio Section */
.portfolio {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

.section-title {
    font-size: clamp(var(--font-size-2xl), 5vw, var(--font-size-3xl));
    font-weight: 900;
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.section-description {
    text-align: center;
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-3xl);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

/* Glass Card */
.glass-card {
    background: var(--color-glass);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(20px);
    transition: all var(--transition-normal);
    overflow: hidden;
}

.portfolio-card {
    display: flex;
    flex-direction: column;
    opacity: 0;
    transform: translateY(30px);
}

.portfolio-card.animate {
    animation: fadeInUp 0.6s ease forwards;
}

.card-image {
    width: 100%;
    height: 240px;
    overflow: hidden;
    position: relative;
}

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

.portfolio-card:hover .portfolio-image {
    transform: scale(1.1);
}

.image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-slow);
}

.project-number {
    font-size: 4rem;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.3);
}

.portfolio-card:hover .image-placeholder {
    transform: scale(1.1);
}

.card-content {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    flex: 1;
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
}

.card-description {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    line-height: 1.7;
    flex: 1;
}

.card-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.card-link:hover {
    color: var(--color-primary-light);
    gap: var(--spacing-sm);
}

.card-link svg {
    transition: transform var(--transition-fast);
}

.card-link:hover svg {
    transform: translate(2px, -2px);
}

.portfolio-card:hover {
    transform: translateY(-8px);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-glow);
}

/* Contact Section */
.contact {
    padding: var(--spacing-3xl) 0;
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-2xl);
    text-align: center;
}

.contact-content.animate {
    animation: fadeInUp 0.8s ease forwards;
}

.contact-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.contact-icon {
    color: var(--color-primary);
}

.contact-link {
    font-size: var(--font-size-lg);
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.contact-link:hover {
    color: var(--color-primary);
}

.copy-btn {
    padding: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-sm);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--color-primary);
}

.copy-btn.copied {
    color: #4ade80;
    border-color: #4ade80;
}

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

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-md);
    color: var(--color-text);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-4px);
}

/* Footer */
.footer {
    padding: var(--spacing-2xl) 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-text {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

[data-animate] {
    opacity: 0;
}

[data-animate].animate {
    animation: fadeInUp 0.8s ease forwards;
}

/* Responsive */
@media (max-width: 768px) {
    :root {
        --spacing-3xl: 4rem;
        --spacing-2xl: 3rem;
    }

    .hero {
        min-height: 90vh;
        padding: var(--spacing-2xl) 0;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .contact-content {
        padding: var(--spacing-lg);
    }

    .contact-item {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .hero-description {
        font-size: var(--font-size-base);
    }

    .section-description {
        font-size: var(--font-size-base);
    }
}