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

/* CSS Variables for Dark Theme */
:root {
    --bg-primary: #000000;
    --bg-secondary: #000000;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --border: #1a1f3a;
    --shadow: rgba(255, 255, 255, 0.1);
}

/* Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--bg-primary);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-brand h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.brand-link {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

.brand-link:hover {
    color: var(--accent);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
    padding: 0;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Social Icons */
.social-icons {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.social-link {
    color: var(--text-secondary);
    transition: color 0.3s ease, transform 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    border-radius: 0.5rem;
}

.social-link:hover {
    color: var(--accent);
    transform: translateY(-2px);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* Section Styles */
.section {
    padding: 6rem 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--bg-primary);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

/* Home Section */
.home {
    text-align: center;
    background: var(--bg-primary);
}

.home-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.home-subtitle {
    font-size: 1.5rem;
    color: var(--accent);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.home-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

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

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

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

.skills h3 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-size: 1.3rem;
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.9rem;
    border: 1px solid var(--border);
}

/* Experience Section */
.timeline {
    max-width: 800px;
    margin: 0 auto;
}

.timeline-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.timeline-item:last-child {
    border-bottom: none;
}

.timeline-date {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.9rem;
    text-align: right;
    padding-top: 0.5rem;
}

.timeline-content h3 {
    color: var(--text-primary);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.timeline-content h4 {
    color: var(--accent);
    font-size: 1rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Education Section */
.education-list {
    max-width: 800px;
    margin: 0 auto;
}

.education-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.education-item:last-child {
    border-bottom: none;
}

.education-date {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.9rem;
    text-align: right;
    padding-top: 0.5rem;
}

.education-content h3 {
    color: var(--text-primary);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.education-content h4 {
    color: var(--accent);
    font-size: 1rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

.education-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.project-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 1rem;
    overflow: hidden;
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
}

.project-image {
    height: 200px;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border);
}

.project-placeholder {
    font-size: 4rem;
    opacity: 0.7;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    color: var(--text-primary);
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.project-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-tag {
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.8rem;
    border: 1px solid var(--border);
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border: 1px solid var(--accent);
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    text-align: center;
    flex: 1;
}

.project-link:hover {
    background: var(--accent);
    color: white;
}

.github-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: #00d4aa;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem;
    transition: all 0.3s ease;
    border: none;
    background: none;
}

.github-link:hover {
    background: none !important;
}

.github-link svg {
    width: 16px;
    height: 16px;
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item {
    color: var(--text-secondary);
}

.contact-item strong {
    color: var(--text-primary);
    display: inline-block;
    width: 80px;
}

.contact-item a {
    color: var(--accent);
    text-decoration: none;
}

.contact-item a:hover {
    text-decoration: underline;
}

/* Form Styles */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 0.75rem;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
.footer {
    background: var(--bg-primary);
    padding: 2rem 0;
    text-align: center;
}

.footer p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        position: relative;
    }

    .nav-menu {
        display: none;
    }

    .social-icons {
        display: flex;
    }

    .home-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .timeline-item,
    .education-item {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .timeline-date,
    .education-date {
        text-align: left;
    }

    .container {
        padding: 0 1rem;
    }

    .section {
        padding: 4rem 0;
    }
}

@media (max-width: 480px) {
    .nav-menu {
        width: 200px;
    }

    .home-title {
        font-size: 2rem;
    }

    .home-subtitle {
        font-size: 1.2rem;
    }
}