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

/* CSS Custom Properties for Theme */
:root {
    --primary-bg: #FFFFFF;
    --secondary-bg: #121212;
    --card-bg: #FFFFFF;
    --primary-text: #121212;
    --secondary-text: #666666;
    --accent-color: #FFD700;
    --border-color: #D1D5DB;
    --transition: all 0.3s ease-in-out;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --radius: 12px;
}

.dark {
    --primary-bg: #121212;
    --secondary-bg: #FFFFFF;
    --card-bg: #1F1F1F;
    --primary-text: #FFFFFF;
    --secondary-text: #A0A0A0;
    --border-color: #444444;
    --accent-color: #FFD700; /* Slightly lighter for better contrast in dark mode */
}

/* Base Typography */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.8;
    color: var(--primary-text);
    background-color: var(--primary-bg);
    transition: var(--transition);
    overflow-x: hidden;
    font-size: 16px;
}

/* Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    transition: opacity 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    pointer-events: none;
}

.preloader-spinner {
    width: 48px;
    height: 48px;
    border: 5px solid var(--accent-color);
    border-top: 5px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Section Styling */
.section {
    padding: 100px 0;
    display: block;
}

/* Section Title */
.section-title {
    font-size: 2.8rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 64px;
    color: var(--primary-text);
    letter-spacing: -0.02em;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--accent-color);
    margin: 16px auto 0;
    border-radius: 2px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: var(--primary-bg);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 24px;
    max-width: 1280px;
    margin: 0 auto;
}

.nav-logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition);
}

.nav-logo:hover, .nav-logo:focus {
    opacity: 0.9;
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
    align-items: center;
}

.nav-link {
    color: var(--primary-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    padding: 10px 16px;
    transition: var(--transition);
    border-radius: 6px;
}

.nav-link:hover,
.nav-link.active,
.nav-link:focus {
    color: var(--accent-color);
    background-color: rgba(255, 215, 0, 0.1);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.6rem;
    color: var(--primary-text);
    cursor: pointer;
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px;
    color: var(--primary-text);
    cursor: pointer;
    transition: var(--transition);
}

.theme-toggle:hover, .theme-toggle:focus {
    color: var(--accent-color);
    border-color: var(--accent-color);
    background-color: rgba(255, 215, 0, 0.1);
}

/* Header */
.header {
    padding: 140px 0;
    background: linear-gradient(to bottom, var(--primary-bg), rgba(255, 215, 0, 0.05));
}

.header-content {
    display: flex;
    gap: 48px;
    align-items: center;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.profile-section {
    flex-shrink: 0;
}

.profile-image-container {
    position: relative;
    transform: translateY(20px);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(20px); }
    50% { transform: translateY(0); }
}

.profile-image {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    border: 5px solid var(--accent-color);
    object-fit: cover;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.profile-image:hover, .profile-image:focus {
    transform: scale(1.05);
}

.availability-badge {
    position: absolute;
    bottom: 24px;
    right: 24px;
    background-color: var(--accent-color);
    color: #000000;
    padding: 10px 20px;
    border-radius: 24px;
    font-size: 0.95rem;
    font-weight: 600;
    box-shadow: var(--shadow);
}

.header-info {
    flex: 1;
}

.typing-animation {
    font-size: 3.2rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--primary-text);
}

.typing-subtitle {
    font-size: 1.8rem;
    font-weight: 500;
    color: var(--secondary-text);
    margin-bottom: 24px;
}

.typing-subtitle.blink::after {
    content: '|';
    color: var(--accent-color);
    animation: blink 1s infinite;
}

.subtitle {
    font-size: 1.8rem;
    color: var(--secondary-text);
    margin-bottom: 24px;
    font-weight: 500;
}

.bio {
    font-size: 1.15rem;
    color: var(--secondary-text);
    margin-bottom: 40px;
    max-width: 650px;
    line-height: 1.9;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.social-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--secondary-text);
    text-decoration: none;
    font-size: 1rem;
    transition: var(--transition);
}

.social-link:hover, .social-link:focus {
    color: var(--accent-color);
    border-color: var(--accent-color);
    background-color: rgba(255, 215, 0, 0.1);
    transform: translateY(-2px);
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #000000;
}

.btn-primary:hover, .btn-primary:focus {
    background-color: #E6C200;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
}

.btn-secondary:hover, .btn-secondary:focus {
    background-color: var(--accent-color);
    color: #000000;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-sm {
    padding: 10px 20px;
    font-size: 0.95rem;
}

.btn-cta {
    background-color: #000000;
    color: var(--accent-color);
    font-size: 1.2rem;
    padding: 16px 32px;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--accent-color);
    color: #000000;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover, .back-to-top:focus {
    transform: translateY(-5px);
    background-color: #E6C200;
}

/* About Section */
.about-section {
    background-color: var(--primary-bg);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    padding: 40px;
    background-color: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.about-content h3 {
    font-size: 2.2rem;
    color: var(--primary-text);
    margin-bottom: 16px;
}

.about-content h4 {
    font-size: 1.6rem;
    color: var(--primary-text);
    margin-bottom: 24px;
}

.location {
    color: var(--secondary-text);
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 1.1rem;
}

.expertise,
.education {
    text-align: left;
    margin-top: 48px;
}

.expertise h4,
.education h4 {
    text-align: center;
    margin-bottom: 24px;
    font-size: 1.8rem;
}

.expertise ul,
.education ul {
    list-style: none;
}

.expertise li,
.education li {
    margin-bottom: 20px;
    padding-left: 24px;
    color: var(--secondary-text);
    font-size: 1.1rem;
    position: relative;
}

.expertise li::before,
.education li::before {
    content: '•';
    color: var(--accent-color);
    position: absolute;
    left: 0;
    font-size: 1.4rem;
}

.expertise strong,
.education strong {
    color: var(--primary-text);
    font-weight: 600;
}

/* Metrics Section */
.metrics-section {
    background: linear-gradient(to bottom, var(--primary-bg), rgba(255, 215, 0, 0.05));
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 32px;
}

.metric-card {
    text-align: center;
    padding: 40px 24px;
    background-color: var(--card-bg);
    border-radius: var(--radius);
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.metric-card:hover, .metric-card:focus {
    transform: translateY(-5px);
}

.metric-number {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 16px;
}

.metric-label {
    color: var(--secondary-text);
    font-weight: 500;
    font-size: 1.1rem;
}

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

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background-color: var(--border-color);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 56px;
    width: 45%;
}

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 55%;
}

.timeline-item::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: var(--accent-color);
    border-radius: 50%;
    top: 16px;
    border: 3px solid var(--primary-bg);
}

.timeline-item:nth-child(odd)::before {
    right: -40px;
}

.timeline-item:nth-child(even)::before {
    left: -40px;
}

.timeline-content {
    background-color: var(--card-bg);
    padding: 32px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.timeline-content:hover, .timeline-content:focus {
    transform: translateY(-5px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
    border-color: var(--accent-color);
}

.timeline-content:focus {
    outline: 2px solid var(--accent-color);
}

.timeline-date {
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 16px;
    font-size: 1rem;
}

.timeline-content h3 {
    color: var(--primary-text);
    margin-bottom: 12px;
    font-size: 1.8rem;
}

.timeline-content h4 {
    color: var(--secondary-text);
    margin-bottom: 20px;
    font-weight: 500;
    font-size: 1.2rem;
}

.timeline-content ul {
    list-style: none;
}

.timeline-content li {
    margin-bottom: 12px;
    padding-left: 24px;
    color: var(--secondary-text);
    font-size: 1.1rem;
    position: relative;
}

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

/* Teaching Section */
.teaching-section {
    background-color: var(--primary-bg);
}

.teaching-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.teaching-card {
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.teaching-card:hover, .teaching-card:focus {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.teaching-icon {
    font-size: 3.5rem;
    color: var(--accent-color);
    margin-bottom: 24px;
}

.teaching-card h3 {
    color: var(--primary-text);
    margin-bottom: 20px;
    font-size: 1.6rem;
}

.teaching-card p {
    color: var(--secondary-text);
    font-size: 1.1rem;
}

.teaching-meta {
    color: var(--secondary-text);
    font-size: 0.95rem;
    font-weight: 500;
}

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

/* TensorFlow Icon for Projects */
.project-tensorflow-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    color: #FF6F00; /* TensorFlow orange */
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(255, 111, 0, 0.08);
    padding: 8px 12px;
    margin-right: 10px;
    margin-bottom: 8px;
    vertical-align: middle;
}

/* Optional: Add a hover effect for the icon */
.project-tensorflow-icon:hover, .project-tensorflow-icon:focus {
    background: #FFEC80;
    color: #FF6F00;
    box-shadow: 0 4px 16px rgba(255, 111, 0, 0.15);
}

.projects-header {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto 48px;
    text-align: center;
}

.projects-banner {
    width: 100%;
    height: 350px;
    object-fit: cover;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.project-filters {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 12px 24px;
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--primary-text);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active,
.filter-btn:focus {
    background-color: var(--accent-color);
    color: #000000;
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

.filter-btn:focus {
    outline: 2px solid var(--accent-color);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 32px;
    margin-bottom: 80px;
}

.project-card {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    display: block;
    position: relative;
    transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.3s ease;
    opacity: 1;
    transform: translateY(0);
}

.project-card.hidden {
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
}

.project-card:hover, .project-card:focus {
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--shadow);
}

.project-image {
    width: 100%;
    height: 260px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.project-card:hover .project-image, .project-card:focus .project-image {
    transform: scale(1.1);
}

.project-card::after {
    content: attr(data-tags);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 260px;
    background: rgba(18, 18, 18, 0.7);
    color: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 500;
    opacity: 0;
    transition: opacity 0.3s ease;
    padding: 20px;
    text-align: center;
}

.project-card:hover::after, .project-card:focus::after {
    opacity: 1;
}

.project-card:focus {
    outline: 2px solid var(--accent-color);
}

.project-content {
    padding: 32px;
}

.project-content h3 {
    color: var(--primary-text);
    margin-bottom: 16px;
    font-size: 1.6rem;
}

.project-content p {
    color: var(--secondary-text);
    margin-bottom: 24px;
    font-size: 1.1rem;
}

.project-meta {
    margin-bottom: 24px;
}

.project-year,
.project-categories {
    color: var(--secondary-text);
    font-size: 0.95rem;
}

.project-links {
    display: flex;
    gap: 20px;
}

.project-links .btn {
    transition: transform 0.3s ease;
}

.project-links .btn:hover, .project-links .btn:focus {
    transform: scale(1.1);
}

.github-cta {
    text-align: center;
    padding: 48px;
    background-color: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.github-cta h3 {
    color: var(--primary-text);
    margin-bottom: 24px;
    font-size: 1.8rem;
}

.github-stats {
    display: flex;
    gap: 32px;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--secondary-text);
    font-size: 1rem;
}

/* Skills Section */
.skills-section {
    background-color: var(--primary-bg);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
    gap: 40px;
    max-width: 1280px;
    margin: 0 auto;
}

.skill-category {
    padding: 48px;
    background-color: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.skill-category h3 {
    color: var(--primary-text);
    margin-bottom: 32px;
    text-align: center;
    font-size: 2rem;
    font-weight: 600;
}

.skill-item {
    display: flex;
    align-items: center;
    margin-bottom: 24px;
    gap: 24px;
    flex-wrap: nowrap;
}

.skill-name {
    flex: 0 0 150px;
    color: var(--primary-text);
    font-size: 1.2rem;
    font-weight: 500;
    text-align: left;
}

.skill-bar {
    flex: 1;
    height: 10px;
    background-color: var(--border-color);
    border-radius: 5px;
    overflow: hidden;
    position: relative;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(to right, var(--accent-color), #E6C200);
    width: 0;
    transition: width 1.5s ease-in-out;
    border-radius: 5px;
}

.skill-item:nth-child(1) .skill-progress { transition-delay: 0.1s; }
.skill-item:nth-child(2) .skill-progress { transition-delay: 0.2s; }
.skill-item:nth-child(3) .skill-progress { transition-delay: 0.3s; }
.skill-item:nth-child(4) .skill-progress { transition-delay: 0.4s; }
.skill-item:nth-child(5) .skill-progress { transition-delay: 0.5s; }

.skill-percent {
    flex: 0 0 70px;
    color: var(--secondary-text);
    font-size: 1.1rem;
    text-align: right;
}

/* Certifications Section */
.certifications-section {
    background-color: var(--primary-bg);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
}

.certification-card {
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.certification-card:hover, .certification-card:focus {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.certification-icon {
    font-size: 3.5rem;
    color: var(--accent-color);
    margin-bottom: 24px;
}

.certification-card h3 {
    color: var(--primary-text);
    margin-bottom: 16px;
    font-size: 1.6rem;
}

.certification-card p {
    color: var(--secondary-text);
    font-size: 1.1rem;
}

.certification-year {
    color: var(--secondary-text);
    font-size: 0.95rem;
}

/* Tools Section */
.tools-section {
    background-color: var(--primary-bg);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 32px;
    justify-items: center;
}

.tool-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 160px;
    height: 160px;
    padding: 24px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background-color: var(--card-bg);
    transition: transform 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
}

.tool-item:hover, .tool-item:focus {
    transform: translateY(-5px);
    background-color: rgba(255, 215, 0, 0.1);
    box-shadow: var(--shadow);
}

.tool-item:focus {
    outline: 2px solid var(--accent-color);
}

.tool-item i {
    font-size: 4rem;
    color: var(--accent-color);
    margin-bottom: 16px;
}

.tool-item span {
    color: var(--primary-text);
    font-size: 1.1rem;
    font-weight: 500;
}

/* Contact Section */
.contact-section {
    background: linear-gradient(to bottom, var(--primary-bg), rgba(255, 215, 0, 0.05));
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.contact-info h3 {
    color: var(--primary-text);
    margin-bottom: 40px;
    font-size: 1.8rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 24px;
    color: var(--secondary-text);
    font-size: 1.1rem;
}

.contact-item i {
    color: var(--accent-color);
    width: 28px;
}

.contact-social {
    display: flex;
    gap: 20px;
    margin-top: 40px;
}

.contact-social .social-link {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

/* Form Styles */
.contact-form {
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    color: var(--primary-text);
    font-weight: 500;
    font-size: 1.1rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--card-bg);
    color: var(--primary-text);
    font-family: inherit;
    font-size: 1.1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.1);
}

.radio-group {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--secondary-text);
    cursor: pointer;
    font-size: 1rem;
}

.radio-label input[type="radio"] {
    width: auto;
}

#budgetDisplay {
    color: var(--accent-color);
    font-weight: 600;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(to right, var(--accent-color), #E6C200);
    color: #000000;
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.8rem;
    margin-bottom: 24px;
    color: #000000;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    color: #000000;
}

/* Footer */
.footer {
    background-color: var(--secondary-bg);
    color: var(--secondary-text);
    padding: 80px 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-color);
}

.footer-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--primary-text);
    text-decoration: none;
    font-size: 1rem;
}

.footer-links a:hover, .footer-links a:focus {
    color: var(--accent-color);
}

.footer-copyright {
    width: 100%;
    text-align: center;
    margin-top: 24px;
    color: var(--secondary-text);
    font-size: 0.95rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
}

.modal-content {
    position: relative;
    margin: 5% auto;
    width: 90%;
    max-width: 900px;
    background-color: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 2.2rem;
    color: var(--primary-text);
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover, .modal-close:focus {
    color: var(--accent-color);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(50px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

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

@keyframes slideIn {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}

/* Ensure content is visible by default */
.js-hidden,
.slide-up {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.js-hidden.active,
.slide-up.active {
    opacity: 1;
    transform: translateY(0);
    animation: slideUp 0.8s ease-out forwards;
}

/* Responsive Design */
@media (min-width: 1024px) {
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1023px) and (min-width: 768px) {
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
    }
}

@media (max-width: 767px) {
    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100%;
        background-color: var(--primary-bg);
        flex-direction: column;
        padding: 90px 24px;
        transform: translateX(100%);
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.2);
    }
    
    .nav-links.active {
        display: flex;
        transform: translateX(0);
        animation: slideIn 0.3s ease-out forwards;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .header {
        padding: 100px 0;
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .typing-animation {
        font-size: 2.6rem;
    }
    
    .typing-subtitle {
        font-size: 1.5rem;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .timeline::before {
        left: 24px;
    }
    
    .timeline-item {
        width: 100%;
        left: 0 !important;
        padding-left: 56px;
    }
    
    .timeline-item::before {
        left: 12px !important;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .github-stats {
        flex-direction: column;
        gap: 16px;
    }
    
    .radio-group {
        flex-direction: column;
        gap: 16px;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .skill-item {
        gap: 16px;
    }
    
    .skill-name {
        flex: 0 0 120px;
        font-size: 1.1rem;
    }
    
    .skill-percent {
        flex: 0 0 60px;
        font-size: 1rem;
    }
    
    .tool-item {
        width: 140px;
        height: 140px;
        padding: 20px;
    }
    
    .tool-item i {
        font-size: 3.5rem;
    }
    
    .tool-item span {
        font-size: 1rem;
    }
    
    .projects-banner {
        height: 250px;
    }
    
    .btn, .filter-btn {
        padding: 10px 20px;
        font-size: 1rem;
    }
    
    .project-filters {
        flex-direction: column;
        align-items: center;
    }
    
    .filter-btn {
        width: 100%;
        max-width: 240px;
    }
    
    .tool-item:hover, .timeline-content:hover, .project-card:hover .project-image {
        transform: none;
    }
    
    .project-card:hover::after {
        opacity: 0;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .typing-animation {
        font-size: 2rem;
    }
    
    .typing-subtitle {
        font-size: 1.3rem;
    }
    
    .profile-image {
        width: 200px;
        height: 200px;
    }
    
    .cta-content h2 {
        font-size: 2rem;
    }
    
    .cta-content p {
        font-size: 1rem;
    }
    
    .contact-form {
        padding: 24px;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .skill-item {
        gap: 12px;
    }
    
    .skill-name {
        flex: 0 0 100px;
        font-size: 0.95rem;
    }
    
    .skill-percent {
        flex: 0 0 50px;
        font-size: 0.9rem;
    }
    
    .tool-item {
        width: 120px;
        height: 120px;
        padding: 16px;
    }
    
    .tool-item i {
        font-size: 3rem;
    }
    
    .tool-item span {
        font-size: 0.9rem;
    }
    
    .projects-banner {
        height: 200px;
    }
}