/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* CSS Custom Properties */
:root {
    --primary-color: #2563eb;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --border-color: #e5e7eb;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Typography and Layout */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

/* Hamburger Menu Button */
.hamburger {
    position: fixed;
    top: 1.5rem;
    left: 1.5rem;
    z-index: 1000;
    cursor: pointer;
    background: var(--bg-primary);
    border: none;
    padding: 0.75rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: var(--transition);
}

.hamburger:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.hamburger span {
    display: block;
    width: 1.5rem;
    height: 2px;
    background: var(--text-primary);
    margin: 0.25rem 0;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(0.4rem, 0.4rem);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(0.5rem, -0.5rem);
}

/* Navigation Menu */
nav {
    position: fixed;
    top: 0;
    left: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-primary);
    box-shadow: 4px 0 6px -1px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    z-index: 999;
    padding: 5rem 2rem 2rem;
}

nav.active {
    left: 0;
}

nav ul {
    list-style: none;
}

nav ul li {
    margin-bottom: 1.5rem;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 500;
    transition: var(--transition);
    display: block;
    padding: 0.5rem;
    border-radius: 0.375rem;
}

nav ul li a:hover {
    color: var(--primary-color);
    background: var(--bg-secondary);
    transform: translateX(0.5rem);
}

/* Overlay */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 998;
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Main Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Hero Section */
.hero {
    background: var(--bg-primary);
    border-radius: 1rem;
    padding: 3rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    text-align: center;
    max-width: 800px;
    width: 100%;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

/* Sections */
section {
    margin-bottom: 3rem;
}

section h2 {
    font-size: 1.875rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

/* GitHub Section */
.github-section {
    display: grid;
    gap: 1rem;
    margin-top: 2rem;
}

.github-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.3);
}

.github-link:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(37, 99, 235, 0.4);
}

.github-icon {
    width: 24px;
    height: 24px;
}

/* Skills Section */
.skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.skill-tag {
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 2rem;
    font-size: 0.875rem;
    color: var(--text-primary);
    transition: var(--transition);
}

.skill-tag:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: scale(1.05);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero .tagline {
        font-size: 1rem;
    }

    .hero {
        padding: 2rem 1.5rem;
    }

    .container {
        padding: 1rem;
    }

    nav {
        width: 240px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.75rem;
    }

    section h2 {
        font-size: 1.5rem;
    }

    .hamburger {
        top: 1rem;
        left: 1rem;
    }
}

/* Resume Page Styles */
.resume-content {
    background: var(--bg-primary);
    border-radius: 1rem;
    padding: 3rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    max-width: 900px;
    width: 100%;
}

.resume-header {
    text-align: center;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 2rem;
    margin-bottom: 2rem;
}

.resume-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.contact-info {
    margin-bottom: 1.5rem;
}

.contact-info p {
    margin: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.contact-info a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

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

.resume-download {
    margin-top: 1.5rem;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.3);
}

.download-btn:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(37, 99, 235, 0.4);
}

.resume-section {
    margin-bottom: 2.5rem;
}

.resume-section h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

.resume-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.job {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.job:last-child {
    border-bottom: none;
}

.job-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.job-header .company {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.job-header .duration {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 0.75rem;
}

.job-details {
    list-style: disc;
    padding-left: 1.5rem;
    margin-top: 0.75rem;
}

.job-details li {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 0.5rem;
}

.education {
    margin-bottom: 1.5rem;
}

.education h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.education .degree {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.education .duration {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 0.5rem;
}

.education-details {
    list-style: disc;
    padding-left: 1.5rem;
    margin-top: 0.5rem;
}

.education-details li {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0.25rem;
}

@media (max-width: 768px) {
    .resume-content {
        padding: 1.5rem;
    }

    .resume-header h1 {
        font-size: 2rem;
    }

    .contact-info p {
        font-size: 0.85rem;
    }
}