:root {
    --bg-main: #0a0a0f;
    --bg-card: rgba(20, 20, 25, 0.6);
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --primary: #3b82f6;
    --secondary: #8b5cf6;
    --accent: #10b981;
    --glass-border: rgba(255, 255, 255, 0.08);
    --glow: 0 0 20px rgba(59, 130, 246, 0.3);
}

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

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

/* Background Gradients */
.bg-gradient {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: radial-gradient(circle at 15% 50%, rgba(59, 130, 246, 0.12), transparent 40%),
                radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.12), transparent 40%);
    z-index: -1;
    pointer-events: none;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0; width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background: rgba(10, 10, 15, 0.7);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
}

.logo {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
}

.highlight {
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 5%;
}

.hero-title {
    font-family: 'Outfit', sans-serif;
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    padding: 0.8rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.primary-btn {
    background: var(--primary);
    color: white;
    box-shadow: var(--glow);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.5);
}

.secondary-btn {
    background: var(--bg-card);
    color: var(--text-main);
    border: 1px solid var(--glass-border);
}

.secondary-btn:hover {
    background: rgba(255,255,255,0.1);
}

/* Sections General */
section {
    padding: 6rem 5%;
}

.section-title {
    font-family: 'Outfit', sans-serif;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    overflow: hidden;
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: rgba(255,255,255,0.2);
}

.card-image-wrapper {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.card-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-card:hover .card-image-wrapper img {
    transform: scale(1.05);
}

.image-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-card:hover .image-overlay {
    opacity: 1;
}

.overlay-btn {
    background: white;
    color: black;
    padding: 0.6rem 1.5rem;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 600;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.project-card:hover .overlay-btn {
    transform: translateY(0);
}

.card-content {
    padding: 1.5rem;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-weight: 600;
}

.tag.py { background: rgba(59, 130, 246, 0.2); color: #60a5fa; }
.tag.ml { background: rgba(139, 92, 246, 0.2); color: #a78bfa; }
.tag.torch { background: rgba(239, 68, 68, 0.2); color: #f87171; }
.tag.cv { background: rgba(16, 185, 129, 0.2); color: #34d399; }

.card-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.card-content p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Skills Section */
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
}

.skill-category h3 {
    margin-bottom: 1.5rem;
    color: var(--text-main);
}

.skill-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.skill-chips span {
    background: rgba(255,255,255,0.05);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    border: 1px solid rgba(255,255,255,0.1);
}

/* Footer */
footer {
    text-align: center;
    padding: 5rem 5% 2rem;
    border-top: 1px solid var(--glass-border);
    margin-top: 2rem;
}

.footer-content h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.footer-content p {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.social-btn {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 1.5rem;
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    transition: all 0.3s ease;
}

.social-btn:hover {
    background: white;
    color: black;
}

.copyright {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title { font-size: 3rem; }
    .nav-links { display: none; }
}