/* ================================
   CSS Custom Properties & Reset
   ================================ */
:root {
    /* Colors */
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #12121a;
    --color-bg-tertiary: #1a1a24;
    
    --color-text-primary: #ffffff;
    --color-text-secondary: #a0a0b0;
    --color-text-muted: #6b6b7b;
    
    --color-accent-primary: #7c3aed;
    --color-accent-secondary: #3b82f6;
    --color-accent-gradient: linear-gradient(135deg, #7c3aed 0%, #3b82f6 100%);
    
    --color-glass-bg: rgba(255, 255, 255, 0.03);
    --color-glass-border: rgba(255, 255, 255, 0.08);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    --font-size-6xl: 4.5rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 40px rgba(124, 58, 237, 0.3);
}

/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ================================
   Utility Classes
   ================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.glass-card {
    background: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all var(--transition-base);
}

.glass-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.12);
    transform: translateY(-2px);
}

.section {
    padding: var(--spacing-4xl) 0;
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    cursor: pointer;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 50px rgba(124, 58, 237, 0.4);
}

.btn-outline {
    border: 1px solid var(--color-glass-border);
    color: var(--color-text-primary);
    background: transparent;
}

.btn-outline:hover {
    background: var(--color-glass-bg);
    border-color: var(--color-accent-primary);
}

.btn-full {
    width: 100%;
}

/* Tags */
.tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-full);
    background: rgba(124, 58, 237, 0.15);
    color: var(--color-accent-primary);
    border: 1px solid rgba(124, 58, 237, 0.3);
}

/* ================================
   Navigation
   ================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-glass-border);
    transition: all var(--transition-base);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.nav-logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent-gradient);
    transition: width var(--transition-base);
}

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

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

.nav-link.resume-link {
    color: var(--color-text-primary);
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
}

.nav-link.resume-link:hover {
    opacity: 0.85;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-base);
}

/* ================================
   Hero Section
   ================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(124, 58, 237, 0.05) 0%, transparent 70%);
    animation: bgPulse 8s ease-in-out infinite alternate;
}

@keyframes bgPulse {
    0% { opacity: 0.7; transform: scale(1); }
    100% { opacity: 1; transform: scale(1.1); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: var(--spacing-xl);
}

.hero-greeting {
    font-size: var(--font-size-lg);
    color: var(--color-accent-primary);
    margin-bottom: var(--spacing-sm);
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.hero-name {
    font-size: var(--font-size-6xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-title {
    font-size: var(--font-size-2xl);
    font-weight: 400;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    min-height: 2em;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

.typing-text {
    color: var(--color-text-primary);
}

.cursor {
    color: var(--color-accent-primary);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-tagline {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    animation: fadeInUp 0.8s ease 0.6s forwards;
    opacity: 0;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-2xl);
    animation: fadeInUp 0.8s ease 0.8s forwards;
    opacity: 0;
}

.hero-socials {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    animation: fadeInUp 0.8s ease 1s forwards;
    opacity: 0;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.social-link:hover {
    color: var(--color-accent-primary);
    border-color: var(--color-accent-primary);
    transform: translateY(-3px);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    animation: fadeInUp 0.8s ease 1.2s forwards, bounce 2s ease-in-out infinite 2s;
    opacity: 0;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--color-text-muted);
    border-bottom: 2px solid var(--color-text-muted);
    transform: rotate(45deg);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ================================
   About Section
   ================================ */
.about-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-image {
    position: relative;
}

.image-frame {
    position: relative;
    padding: var(--spacing-md);
    background: var(--color-accent-gradient);
    border-radius: var(--radius-2xl);
}

.image-frame::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-2xl);
    background: var(--color-accent-gradient);
    filter: blur(20px);
    opacity: 0.5;
    z-index: -1;
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-5xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-bg-secondary), var(--color-bg-tertiary));
}

.image-placeholder span {
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-text h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-lg);
    color: var(--color-accent-primary);
}

.about-text p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

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

.about-highlights {
    display: flex;
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-xl);
}

.highlight-item {
    text-align: center;
}

.highlight-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* ================================
   Experience Section
   ================================ */
.experience {
    background: var(--color-bg-secondary);
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-accent-gradient);
}

.timeline-item {
    position: relative;
    padding-left: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -6px;
    top: var(--spacing-lg);
    width: 14px;
    height: 14px;
    border-radius: var(--radius-full);
    background: var(--color-accent-gradient);
    box-shadow: var(--shadow-glow);
}

.timeline-content {
    padding: var(--spacing-xl);
}

.timeline-header {
    margin-bottom: var(--spacing-sm);
}

.timeline-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.company {
    color: var(--color-accent-primary);
    font-weight: 500;
}

.timeline-date {
    display: inline-block;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
}

.timeline-list {
    margin-bottom: var(--spacing-lg);
}

.timeline-list li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.timeline-list li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--color-accent-primary);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

/* ================================
   Skills Section
   ================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.skill-category {
    padding: var(--spacing-xl);
    text-align: center;
}

.skill-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: rgba(124, 58, 237, 0.15);
    color: var(--color-accent-primary);
}

.skill-category h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-lg);
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
}

.skill-item {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-md);
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
}

/* ================================
   Projects Section
   ================================ */
.projects {
    background: var(--color-bg-secondary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.project-card {
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.project-image {
    position: relative;
    padding: var(--spacing-3xl);
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.2), rgba(59, 130, 246, 0.2));
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-placeholder {
    color: var(--color-accent-primary);
    opacity: 0.8;
}

.project-content {
    padding: var(--spacing-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-content h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
}

.project-content > p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.project-features {
    margin-bottom: var(--spacing-lg);
}

.project-features li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.project-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent-primary);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.project-links {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: auto;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

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

/* ================================
   Education Section
   ================================ */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.education-card {
    padding: var(--spacing-xl);
    display: flex;
    gap: var(--spacing-lg);
}

.education-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: rgba(124, 58, 237, 0.15);
    color: var(--color-accent-primary);
}

.education-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.education-content .specialization {
    color: var(--color-accent-primary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.education-content .institution {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.education-meta {
    display: flex;
    gap: var(--spacing-lg);
    font-size: var(--font-size-sm);
}

.education-meta .year {
    color: var(--color-text-muted);
}

.education-meta .cgpa {
    color: var(--color-accent-primary);
    font-weight: 600;
}

/* ================================
   Credentials Section
   ================================ */
.credentials {
    background: var(--color-bg-secondary);
}

.credentials-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.credential-card {
    padding: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.credential-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
}

.credential-icon.publication {
    background: rgba(59, 130, 246, 0.15);
    color: var(--color-accent-secondary);
}

.credential-icon.cert {
    background: rgba(124, 58, 237, 0.15);
    color: var(--color-accent-primary);
}

.credential-content h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
}

.credential-content .journal,
.credential-content .provider {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
}

.credential-content .date {
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
}

.certifications-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* ================================
   Contact Section
   ================================ */
.contact-intro {
    text-align: center;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: -var(--spacing-xl) auto var(--spacing-2xl);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    padding: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.contact-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: rgba(124, 58, 237, 0.15);
    color: var(--color-accent-primary);
}

.contact-item h4 {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

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

.contact-form {
    padding: var(--spacing-xl);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    transition: border-color var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

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

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

/* ================================
   Footer
   ================================ */
.footer {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-glass-border);
    background: var(--color-bg-secondary);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-content p {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.footer-socials {
    display: flex;
    gap: var(--spacing-md);
}

.footer-socials .social-link {
    width: 40px;
    height: 40px;
}

/* ================================
   Animations for Scroll
   ================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ================================
   Responsive Design
   ================================ */
@media (max-width: 992px) {
    .credentials-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .about-image {
        max-width: 250px;
        margin: 0 auto;
    }
    
    .about-highlights {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-6xl: 3rem;
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-bg-primary);
        padding: var(--spacing-xl);
        flex-direction: column;
        gap: var(--spacing-lg);
        border-bottom: 1px solid var(--color-glass-border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .timeline::before {
        left: 6px;
    }
    
    .timeline-marker {
        left: 0;
    }
    
    .timeline-item {
        padding-left: var(--spacing-2xl);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .education-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .section {
        padding: var(--spacing-3xl) 0;
    }
    
    .about-highlights {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .education-card {
        flex-direction: column;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
}