:root {
    --bg-dark: #030508;
    --bg-card: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --accent: #00f2ff;
    --accent-2: #7000ff;
    --accent-gradient: linear-gradient(135deg, #00f2ff 0%, #7000ff 100%);
    --accent-glow: rgba(0, 242, 255, 0.4);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --font-main: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-dark);
    background-image: radial-gradient(circle at 20% 20%, rgba(0, 242, 255, 0.08) 0%, transparent 40%),
                      radial-gradient(circle at 80% 10%, rgba(112, 0, 255, 0.10) 0%, transparent 45%),
                      radial-gradient(circle at 70% 80%, rgba(0, 242, 255, 0.06) 0%, transparent 35%);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

/* --- Layout --- */

header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 5%;
    z-index: 1000;
    background: rgba(10, 12, 16, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -1px;
}

.logo span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
}

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

/* --- Components --- */

.btn {
    padding: 0.8rem 1.8rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    display: inline-block;
}

.btn-primary {
    background-color: var(--accent);
    color: var(--bg-dark);
    box-shadow: 0 0 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px var(--accent-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
    margin-left: 1rem;
}

.btn-secondary:hover {
    background: var(--accent-glow);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--accent-gradient);
}

/* --- Hero Section --- */

#hero {
    height: 100vh;
    display: flex;
    align-items: center;
    padding: 0 10%;
    position: relative;
}

.hero-content {
    max-width: 700px;
    z-index: 2;
}

.sub-headline {
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    letter-spacing: 2px;
}

.headline {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.hero-visual {
    position: absolute;
    right: 0;
    top: 0;
    width: 50%;
    height: 100%;
    background: radial-gradient(circle at 70% 50%, rgba(112, 0, 255, 0.35) 0%, transparent 70%);
    opacity: 0.5;
    z-index: 1;
}

/* --- About Section --- */

section {
    padding: 100px 10%;
    max-width: 1400px;
    margin: 0 auto;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.skill-tag {
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent);
}

/* --- Experience Timeline --- */

.experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.experience-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    padding: 2.5rem;
    border-radius: 8px;
    transition: var(--transition);
}

.experience-card:hover {
    border-color: var(--accent);
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.05);
}

.exp-date {
    display: inline-block;
    margin-bottom: 1rem;
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 0.85rem;
    padding: 0.35rem 0.8rem;
    border: 1px solid var(--glass-border);
    border-radius: 999px;
    background: rgba(0, 242, 255, 0.05);
}

.experience-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.experience-card .company {
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 1rem;
}

.experience-card ul {
    list-style: none;
}

.experience-card ul li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.8rem;
    color: var(--text-secondary);
}

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

/* --- Project Grid --- */

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    padding: 2.5rem;
    border-radius: 8px;
    transition: var(--transition);
}

.project-card:hover {
    border-color: var(--accent);
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.05);
}

.project-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.project-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.project-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.project-tags {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.project-tags span {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    opacity: 0.8;
}

/* --- Education --- */

.edu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.edu-card {
    border-left: 2px solid var(--accent);
    padding: 2rem;
    background: var(--bg-card);
}

.edu-degree {
    font-weight: 600;
    margin: 0.5rem 0;
}

.edu-date {
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.honors {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.honors span {
    font-size: 0.8rem;
    background: var(--accent-glow);
    color: var(--text-primary);
    padding: 2px 8px;
    border-radius: 2px;
}

/* --- Contact --- */

.contact-block {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 3rem;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 5rem;
}

.contact-link {
    display: block;
    font-size: 1.5rem;
    color: var(--text-primary);
    text-decoration: none;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.contact-link:hover {
    color: var(--accent);
    padding-left: 10px;
}

.contact-form input, 
.contact-form textarea {
    width: 100%;
    padding: 1rem;
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-family: inherit;
    transition: var(--transition);
}

.contact-form input:focus, 
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.05);
}

footer {
    padding: 3rem;
    text-align: center;
    border-top: 1px solid var(--glass-border);
    color: var(--text-secondary);
    font-size: 0.8rem;
}

/* --- Animations --- */

.fade-in {
    animation: fadeIn 1.5s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

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

/* --- Responsive --- */

@media (max-width: 968px) {
    header {
        padding: 1rem 5%;
    }

    #hero {
        padding: 0 6%;
        height: auto;
        min-height: 90vh;
    }

    .headline {
        font-size: clamp(2.4rem, 10vw, 3.6rem);
    }

    .description {
        font-size: 1.05rem;
    }

    section {
        padding: 80px 6%;
    }

    .about-grid, .contact-container {
        grid-template-columns: 1fr;
    }

    .project-grid,
    .experience-grid,
    .edu-grid {
        grid-template-columns: 1fr;
    }

    .contact-container {
        gap: 2rem;
    }

    .contact-link {
        font-size: 1.2rem;
    }

    .btn {
        width: 100%;
        text-align: center;
        margin-bottom: 0.75rem;
    }

    .btn-secondary {
        margin-left: 0;
    }

    .nav-links {
        display: none;
    }
}

@media (max-width: 480px) {
    .contact-block {
        padding: 2rem;
    }

    .project-card,
    .experience-card,
    .edu-card {
        padding: 2rem;
    }
}