/* Modern Portfolio CSS - Inspired by monzim.com */

/* CSS Variables */
:root {
    --primary-color: #000000;
    --secondary-color: #111111;
    --accent-color: #0066cc;
    --text-primary: #000000;
    --text-secondary: #666666;
    --text-muted: #999999;
    --background-primary: #ffffff;
    --background-secondary: #f8f9fa;
    --background-tertiary: #f4f5f6;
    --border-color: #e5e5e5;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --container-width: 1200px;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --primary-color: #ffffff;
    --secondary-color: #f0f0f0;
    --accent-color: #4da6ff;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #8a8a8a;
    --background-primary: #0a0a0a;
    --background-secondary: #111111;
    --background-tertiary: #1a1a1a;
    --border-color: #2a2a2a;
    --shadow-sm: 0 1px 2px rgba(255, 255, 255, 0.05);
    --shadow-md: 0 4px 6px rgba(255, 255, 255, 0.07);
    --shadow-lg: 0 10px 15px rgba(255, 255, 255, 0.1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-primary);
    overflow-x: hidden;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 600;
    letter-spacing: -0.015em;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    margin-bottom: 1rem;
    font-weight: 600;
    letter-spacing: -0.015em;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 1.8rem);
    font-weight: 600;
    letter-spacing: -0.01em;
}

p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    font-weight: 400;
    letter-spacing: normal;
}

/* Loading Animation */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--background-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 6rem 0 2rem 0;
    background: var(--background-primary);
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text h1 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    line-height: 1.2;
    white-space: nowrap;
}

@media (max-width: 768px) {
    .hero-text h1 {
        white-space: normal;
    }
}

.hero-text h2 {
    font-size: clamp(1.2rem, 2.5vw, 1.5rem);
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    letter-spacing: normal;
}

.hero-text p {
    font-size: 1.1rem;
    margin-bottom: 3rem;
    max-width: 600px;
    font-weight: 400;
    line-height: 1.6;
    letter-spacing: normal;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-bottom: 3rem;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    letter-spacing: normal;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    font-weight: 400;
    letter-spacing: normal;
}

.hero-contact {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.hero-email {
    font-size: 1.1rem;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    display: inline;
    width: fit-content;
}

.hero-email:hover {
    color: var(--primary-color);
}

.hero-social {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.hero-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--text-secondary);
    text-decoration: none;
    background: var(--background-secondary);
    border-radius: 50%;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.hero-social a:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.hero-social a img {
    width: 20px;
    height: 20px;
    transition: var(--transition);
}

.hero-social a svg {
    width: 20px;
    height: 20px;
    transition: var(--transition);
    color: var(--text-primary);
}

.hero-social a:hover img,
.hero-social a:hover svg {
    transform: scale(1.1);
    color: var(--accent-color);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    transform: translateZ(0); /* Force hardware acceleration */
    backface-visibility: hidden; /* Prevent flickering */
}

.profile-img {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--border-color);
    transition: transform 0.3s ease, border-color 0.3s ease;
    position: relative;
    z-index: 1;
    transform: translateZ(0) !important; /* Force fixed position, override any JS transforms */
    backface-visibility: hidden; /* Prevent flickering */
    will-change: transform; /* Optimize for transforms */
}

.profile-img:hover {
    transform: translateZ(0) scale(1.05) !important; /* Only allow hover scaling */
    border-color: var(--accent-color);
}

/* Modern Navigation */
.modern-nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(-100%);
}

.modern-nav.show {
    opacity: 1;
    transform: translateY(0);
}

.modern-nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
}

@keyframes slideDown {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    position: relative;
    font-size: 0.95rem;
    letter-spacing: -0.01em;
    outline: none;
    border: none;
}

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

.nav-links a:focus,
.nav-links a:active {
    outline: none;
    border: none;
    background: var(--background-secondary);
    color: var(--accent-color);
}

/* Theme Toggle Button */
.theme-toggle {
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 0;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    width: 44px;
    height: 44px;
    outline: none;
}

.theme-toggle:hover {
    background: var(--background-tertiary);
    border-color: var(--accent-color);
    transform: scale(1.05);
}

.theme-toggle:focus,
.theme-toggle:active {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(102, 102, 102, 0.1);
}

.theme-toggle:focus:not(:focus-visible) {
    box-shadow: none;
}

.theme-icon {
    position: relative;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-icon svg {
    width: 20px;
    height: 20px;
    transition: all 0.3s ease;
    color: var(--text-primary);
}

/* Default light mode - show sun, hide moon */
.sun-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.moon-icon {
    opacity: 0;
    transform: rotate(180deg) scale(0.5);
    position: absolute;
}

/* Dark mode - hide sun, show moon */
[data-theme="dark"] .sun-icon {
    opacity: 0;
    transform: rotate(-180deg) scale(0.5);
    position: absolute;
}

[data-theme="dark"] .moon-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
    position: relative;
}

/* Dark mode navigation adjustments */
[data-theme="dark"] .modern-nav {
    background: rgba(10, 10, 10, 0.9);
}

[data-theme="dark"] .modern-nav.scrolled {
    background: rgba(10, 10, 10, 0.95);
}

/* Dark mode icon handling - only for skill icons that are external images */
[data-theme="dark"] .skill-item img {
    filter: brightness(0.95);
    transition: var(--transition);
}

[data-theme="dark"] .skill-item:hover img {
    filter: brightness(1.1);
}

/* Invert monochrome social media icons for dark mode */
[data-theme="dark"] .hero-social a img[alt*="GitHub"],
[data-theme="dark"] .hero-social a img[alt*="LinkedIn"],
[data-theme="dark"] .hero-social a img[alt*="Codeforces"],
[data-theme="dark"] .hero-social a img[alt*="Gmail"],
[data-theme="dark"] .hero-social a img[alt*="Facebook"],
[data-theme="dark"] .contact-link img[alt*="GitHub"],
[data-theme="dark"] .contact-link img[alt*="LinkedIn"],
[data-theme="dark"] .contact-link img[alt*="Codeforces"],
[data-theme="dark"] .contact-link img[alt*="Email"],
[data-theme="dark"] .contact-link img[alt*="Facebook"] {
    filter: invert(1) brightness(0.9);
}

/* Only invert truly monochrome icons that need it */
[data-theme="dark"] .skill-item img[alt*="GitHub"] {
    filter: invert(1) brightness(0.9);
}

/* Invert black text/logo icons that are invisible in dark mode */
[data-theme="dark"] .skill-item img[alt*="Express"],
[data-theme="dark"] .skill-item img[alt*="Vercel"],
[data-theme="dark"] .skill-item img[alt*="Next.js"] {
    filter: invert(1) brightness(0.9);
}

/* Profile image adjustment for dark mode */
[data-theme="dark"] .profile-img {
    border-color: var(--border-color);
    filter: brightness(0.95) contrast(1.05);
}

/* Smooth theme transition */
html {
    transition: background-color 0.3s ease, color 0.3s ease;
}

* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, filter 0.3s ease;
}

/* Dark mode form adjustments */
[data-theme="dark"] .modern-contact-form input,
[data-theme="dark"] .modern-contact-form textarea {
    background: var(--background-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .modern-contact-form input:focus,
[data-theme="dark"] .modern-contact-form textarea:focus {
    border-color: var(--accent-color);
    background: var(--background-tertiary);
}

/* Dark mode project cards */
[data-theme="dark"] .project-card {
    background: var(--background-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .project-card:hover {
    background: var(--background-tertiary);
    border-color: var(--accent-color);
}

/* Dark mode button styling */
[data-theme="dark"] .modern-btn {
    background: var(--accent-color);
    color: var(--background-primary);
}

[data-theme="dark"] .modern-btn:hover {
    background: #3399ff;
    color: var(--background-primary);
}

/* Dark mode footer styling */
[data-theme="dark"] .modern-footer {
    background: var(--background-secondary);
    border-top: 1px solid var(--border-color);
}

[data-theme="dark"] .footer-main h3,
[data-theme="dark"] .footer-section h4 {
    color: var(--text-primary);
}

[data-theme="dark"] .footer-main p {
    color: var(--text-secondary);
}

[data-theme="dark"] .footer-section ul li a {
    color: var(--text-secondary);
}

[data-theme="dark"] .footer-section ul li a:hover {
    color: var(--accent-color);
}

[data-theme="dark"] .footer-bottom {
    border-top-color: var(--border-color);
}

[data-theme="dark"] .footer-bottom p {
    color: var(--text-secondary);
}

/* Dark mode success/error messages */
[data-theme="dark"] .success-message {
    background: rgba(40, 167, 69, 0.1);
    color: #28a745;
    border-color: rgba(40, 167, 69, 0.3);
}

[data-theme="dark"] .error-message {
    background: rgba(220, 53, 69, 0.1);
    color: #dc3545;
    border-color: rgba(220, 53, 69, 0.3);
}

/* Skills Section */
.skills-section {
    padding: 6rem 0;
    background: var(--background-primary);
}

.skills-section:nth-child(even) {
    background: var(--background-secondary);
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
    line-height: 1.7;
    letter-spacing: -0.01em;
}

.skills-section h2 {
    text-align: center;
    margin-bottom: 1rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.skill-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 2rem 1rem;
    background: var(--background-primary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.skill-item.animate {
    opacity: 1;
    transform: translateY(0);
}

.skill-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.skill-item img {
    width: 48px;
    height: 48px;
    transition: var(--transition);
}

.skill-item:hover img {
    transform: scale(1.1);
}

.skill-item span {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
    text-align: center;
    letter-spacing: -0.01em;
}

/* Projects Section */
.projects-section {
    padding: 6rem 0;
    background: var(--background-secondary);
}

.projects-section h2 {
    text-align: center;
    margin-bottom: 1rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.modern-card {
    background: var(--background-primary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    transition: var(--transition);
    cursor: pointer;
    opacity: 0;
    transform: translateY(20px);
}

.modern-card.animate {
    opacity: 1;
    transform: translateY(0);
}

.modern-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

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

.project-header h3 {
    color: var(--text-primary);
    margin-bottom: 0;
    font-weight: 700;
    letter-spacing: -0.02em;
}

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

.tech-tag {
    padding: 0.25rem 0.75rem;
    background: var(--background-tertiary);
    color: var(--text-secondary);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: -0.005em;
}

.project-features {
    list-style: none;
    margin: 1.5rem 0;
}

.project-features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
}

.project-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.project-link {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.project-link span {
    color: var(--accent-color);
    font-weight: 600;
    font-size: 0.9rem;
}

/* Education Section */
.education-section {
    padding: 6rem 0;
    background: var(--background-primary);
}

.education-section h2 {
    text-align: center;
    margin-bottom: 1rem;
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.education-card {
    background: var(--background-primary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.education-card.animate {
    opacity: 1;
    transform: translateY(0);
}

.education-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.education-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.education-header h3 {
    color: var(--text-primary);
    margin-bottom: 0;
}

.education-period {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

.education-degree {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.education-status, .education-grade {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.education-highlights {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.highlight-tag {
    padding: 0.25rem 0.75rem;
    background: var(--background-tertiary);
    color: var(--text-secondary);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* Contact Section */
.contact-section {
    padding: 6rem 0;
    background: var(--background-secondary);
}

.contact-section h2 {
    text-align: center;
    margin-bottom: 1rem;
}

.contact-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
    line-height: 1.7;
    letter-spacing: -0.01em;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-top: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.contact-item strong {
    color: var(--text-primary);
    font-weight: 600;
}

.contact-item a {
    color: var(--accent-color);
    text-decoration: none;
    font-size: 1.1rem;
    transition: var(--transition);
}

.contact-item a:hover {
    color: var(--primary-color);
}

.contact-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.contact-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: var(--text-secondary);
    text-decoration: none;
    background: var(--background-secondary);
    border-radius: 50%;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.contact-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.contact-link img {
    width: 24px;
    height: 24px;
    transition: var(--transition);
}

.contact-link svg {
    width: 24px;
    height: 24px;
    transition: var(--transition);
    color: var(--text-primary);
}

.contact-link:hover img,
.contact-link:hover svg {
    transform: scale(1.1);
    color: var(--accent-color);
}

/* Contact Form */
.contact-form-container {
    background: var(--background-primary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    padding: 2rem;
}

.modern-contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
    letter-spacing: -0.01em;
}

.form-group input,
.form-group textarea {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    font-size: 1rem;
    background: var(--background-primary);
    transition: var(--transition);
    font-weight: 400;
    letter-spacing: normal;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

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

.modern-btn {
    padding: 0.75rem 2rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition), background-color 0.3s ease, color 0.3s ease;
    align-self: flex-start;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    letter-spacing: normal;
}

.modern-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-1px);
}

.modern-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.success-message {
    background: #d4edda;
    color: #155724;
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    border: 1px solid #c3e6cb;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.error-message {
    background: #f8d7da;
    color: #721c24;
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    border: 1px solid #f5c6cb;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Footer */
.modern-footer {
    background: var(--primary-color);
    color: white;
    padding: 4rem 0 2rem;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 2rem;
}

.footer-main h3 {
    color: white;
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}

.footer-main p {
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.3s ease;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
}

.footer-section h4 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1rem;
    transition: color 0.3s ease;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition), color 0.3s ease;
}

.footer-section ul li a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    transition: border-color 0.3s ease;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 0;
    transition: color 0.3s ease;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero {
        padding: 1rem 0;
        min-height: auto;
    }
    
    .hero-content {
        padding: 0 1rem;
    }
    
    .hero-stats {
        gap: 2rem;
    }
    
    .hero-social {
        justify-content: center;
    }
    
    .nav-container {
        padding: 0 1rem;
        justify-content: space-between;
        gap: 0.5rem;
    }
    
    .nav-links {
        gap: 0.5rem;
        flex-shrink: 1;
        min-width: 0;
    }
    
    .nav-links a {
        padding: 0.4rem 0.6rem;
        font-size: 0.85rem;
        white-space: nowrap;
    }
    
    .theme-toggle {
        width: 38px;
        height: 38px;
        padding: 0;
    }
    
    .theme-icon {
        width: 18px;
        height: 18px;
    }
    
    .theme-icon svg {
        width: 16px;
        height: 16px;
    }
    
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
        gap: 1rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .education-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .project-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .education-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 0.75rem;
        height: 65px;
    }
    
    .nav-links {
        gap: 0.25rem;
    }
    
    .nav-links a {
        padding: 0.3rem 0.5rem;
        font-size: 0.8rem;
    }
    
    .theme-toggle {
        width: 36px;
        height: 36px;
        padding: 0;
    }
    
    .theme-icon {
        width: 16px;
        height: 16px;
    }
    
    .theme-icon svg {
        width: 14px;
        height: 14px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }
    
    .stat {
        align-items: center;
        text-align: center;
    }
    
    .profile-img {
        width: 250px;
        height: 250px;
    }
    
    .modern-card,
    .education-card,
    .contact-form-container {
        padding: 1.5rem;
    }
    
    .skills-section,
    .projects-section,
    .education-section,
    .contact-section {
        padding: 4rem 0;
    }
}

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

.animate {
    animation: fadeInUp 0.6s ease forwards;
}

/* Smooth transitions for all interactive elements */
a, button, .skill-item, .modern-card, .education-card {
    transition: var(--transition);
}

/* Focus styles for accessibility */
a:focus,
button:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}