/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&family=JetBrains+Mono:wght@400;700&display=swap');

:root {
    --bg-color: #0f172a;
    --bg-alt: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --accent: #38bdf8;
    --accent-hover: #0ea5e9;
    --card-bg: #1e293b;
    --border-color: #334155;
    --font-main: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 45px;
    width: 45px;
    /* force square */
    object-fit: contain;
    display: block;
    background-color: rgba(255, 255, 255, 0.95);
    padding: 3px;
    border-radius: 30%;
    /* ← THIS makes it circular */
}


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

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}

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

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

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    transition: var(--transition);
    background-color: var(--text-primary);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 10%;
    padding-top: 80px;
    /* Offset for fixed navbar */
}

.hero-content {
    max-width: 600px;
}

.greeting {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    display: block;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.1;
    background: linear-gradient(to right, #f1f5f9, #94a3b8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero .subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.hero .description {
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    font-size: 1.1rem;
    max-width: 480px;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 0.8rem 1.5rem;
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid transparent;
}

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

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

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

.btn.secondary:hover {
    background-color: rgba(56, 189, 248, 0.1);
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.code-block {
    background: #000;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    font-family: var(--font-mono);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    width: 100%;
    max-width: 400px;
}

.code-block code {
    color: var(--text-primary);
    font-size: 0.9rem;
}

/* Sections */
.section {
    padding: 5rem 10%;
}

.alt-bg {
    background-color: var(--bg-alt);
}

.section-title {
    font-size: 2rem;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 4px;
    background-color: var(--accent);
    border-radius: 2px;
}

/* About */
.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.about-text p {
    margin-bottom: 1.5rem;
}

.about-text strong {
    color: var(--accent);
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.skill-category:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
}

.skill-category h3 {
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.skill-category ul {
    list-style: none;
}

.skill-category li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
}

.skill-category li::before {
    content: '▹';
    color: var(--accent);
    margin-right: 0.5rem;
}

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

.project-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.project-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.project-icon {
    font-size: 2rem;
    color: var(--accent);
}

.project-card h3 {
    font-size: 1.3rem;
    margin-top: 1rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
}

.project-tags span {
    font-size: 0.8rem;
    font-family: var(--font-mono);
    color: var(--accent);
    background: rgba(56, 189, 248, 0.1);
    padding: 0.2rem 0.6rem;
    border-radius: 99px;
}

.project-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Education */
.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    margin-bottom: 2rem;
    padding-left: 2rem;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 5px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--bg-color);
    border: 2px solid var(--accent);
}

.timeline-date {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.timeline-content h3 {
    margin-bottom: 0.2rem;
}

.timeline-content .institution {
    color: var(--text-secondary);
    font-style: italic;
}

/* Contact */
.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-content p {
    margin-bottom: 2rem;
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.contact-btn {
    text-decoration: none;
    color: var(--text-primary);
    padding: 1rem 2rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.contact-btn:hover {
    background: var(--card-bg);
    border-color: var(--accent);
    color: var(--accent);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        justify-content: center;
        text-align: center;
        padding-top: 100px;
    }

    .hero-content {
        margin-bottom: 3rem;
    }

    .cta-buttons {
        justify-content: center;
    }

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

    .nav-links {
        display: none;
        /* Add JS toggle for mobile menu */
    }

    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--bg-alt);
        padding: 2rem;
        border-bottom: 1px solid var(--border-color);
    }

    .hamburger {
        display: block;
    }
}