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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

/* Removed loading state - start directly with animations */

/* Ensure hover effects work smoothly */
.project-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

html {
    scroll-behavior: smooth;
}

/* Ensure images load properly */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2c3e50;
    text-decoration: none;
}

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

.nav-link {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #3498db;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #3498db;
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 3.5rem;
    color: white;
    margin-bottom: 1rem;
    font-weight: 700;
}

.highlight {
    color: #f39c12;
}

.hero-text h2 {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1rem;
    font-weight: 400;
}

.hero-text p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    display: inline-block;
}

.btn-primary {
    background: #f39c12;
    color: white;
}

.btn-primary:hover {
    background: #e67e22;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #667eea;
}

.hero-image {
    text-align: center;
    padding-left: 2rem;
}

.profile-img {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center 35%;
    border: 5px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, opacity 0.3s ease;
    opacity: 1;
}

.profile-img {
    animation: fadeInProfile 1s ease-out 0.3s both;
}

@keyframes fadeInProfile {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.profile-img:hover {
    transform: scale(1.05);
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: #3498db;
}

/* About Section */
.about {
    background: #f8f9fa;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: #666;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.stat {
    text-align: center;
}

.stat h3 {
    font-size: 2.5rem;
    color: #3498db;
    margin-bottom: 0.5rem;
}

.stat p {
    color: #666;
    font-weight: 500;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.8rem;
}

.skill-category {
    background: linear-gradient(145deg, #ffffff, #f8f9fa);
    padding: 1.8rem 1.5rem;
    border-radius: 16px;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.08),
        0 2px 8px rgba(0, 0, 0, 0.04),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
    position: relative;
    z-index: 1;
    border: 1px solid rgba(52, 152, 219, 0.08);
    overflow: hidden;
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3498db, #2980b9, #5dade2);
    background-size: 200% 100%;
    opacity: 0;
    transition: all 0.4s ease;
    border-radius: 16px 16px 0 0;
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.skill-category::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(52, 152, 219, 0.02) 0%, 
        rgba(52, 152, 219, 0.08) 50%, 
        rgba(52, 152, 219, 0.02) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    border-radius: 16px;
    pointer-events: none;
}

.skill-category:hover::before {
    opacity: 1;
}

.skill-category:hover::after {
    opacity: 1;
}

.skill-category:hover {
    transform: translateY(-8px) scale(1.015) !important;
    box-shadow: 
        0 20px 60px rgba(52, 152, 219, 0.15),
        0 8px 24px rgba(52, 152, 219, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.95) !important;
    z-index: 2;
    border-color: rgba(52, 152, 219, 0.2);
}

.skill-category h3 {
    font-size: 1.2rem;
    margin-bottom: 1.2rem;
    color: #2c3e50;
    text-align: center;
    font-weight: 700;
    position: relative;
    letter-spacing: -0.02em;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.skill-category h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 2px;
    background: linear-gradient(90deg, #3498db, #2980b9);
    border-radius: 2px;
    box-shadow: 0 2px 4px rgba(52, 152, 219, 0.3);
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 0.3rem;
    justify-content: center;
}

.skill-item {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    padding: 0.4rem 0.9rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 
        0 4px 12px rgba(52, 152, 219, 0.25),
        0 2px 4px rgba(52, 152, 219, 0.15);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.02em;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.skill-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.2), 
        transparent);
    transition: left 0.5s ease;
}

.skill-item:hover::before {
    left: 100%;
}

.skill-item:hover {
    background: linear-gradient(135deg, #2980b9, #1f618d);
    transform: translateY(-2px) scale(1.05);
    box-shadow: 
        0 8px 20px rgba(52, 152, 219, 0.35),
        0 4px 8px rgba(52, 152, 219, 0.2);
}

/* Projects Section */
.projects {
    background: #f8f9fa;
}

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

.project-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(52, 152, 219, 0.1);
}

.project-card:hover {
    transform: translateY(-8px) !important;
    box-shadow: 0 15px 35px rgba(52, 152, 219, 0.15) !important;
}

.project-image {
    height: 200px;
    overflow: hidden;
    position: relative;
}

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

/* Special styling for app logos */
.project-image img[src*="logo"] {
    object-fit: contain;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
}

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

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #2c3e50;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.impact-icon {
    font-size: 1rem;
    color: #3498db;
}

.project-content p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

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

.project-tech span {
    background: #ecf0f1;
    color: #2c3e50;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
}

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

.project-link {
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.project-link:hover {
    color: #2980b9;
}

/* Download button styling */
.project-link[download] {
    background: linear-gradient(135deg, #27ae60, #2ecc71);
    color: white !important;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(39, 174, 96, 0.3);
    transition: all 0.3s ease;
}

.project-link[download]:hover {
    background: linear-gradient(135deg, #229954, #27ae60);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(39, 174, 96, 0.4);
    color: white !important;
}

.project-link[download] i {
    margin-right: 0.5rem;
}

/* Project status badge */
.project-status {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 10;
}

.status-badge {
    background: linear-gradient(135deg, #f39c12, #e67e22);
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 2px 8px rgba(243, 156, 18, 0.4);
    }
    50% {
        box-shadow: 0 2px 15px rgba(243, 156, 18, 0.6);
    }
    100% {
        box-shadow: 0 2px 8px rgba(243, 156, 18, 0.4);
    }
}

/* Social impact indicators */
.project-impact {
    background: linear-gradient(135deg, #27ae60, #2ecc71);
    color: white;
    padding: 0.3rem 0.6rem;
    border-radius: 15px;
    font-size: 0.7rem;
    font-weight: 600;
    margin-top: 0.5rem;
    display: inline-block;
}

.project-impact.family {
    background: linear-gradient(135deg, #8e44ad, #9b59b6);
}

.project-impact.education {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
}

.project-impact.mobile-app {
    background: linear-gradient(135deg, #3498db, #2980b9);
    margin-left: 0.5rem;
}

/* Education Section */
.education {
    padding: 80px 0; /* Reduced from 100px */
}

.education-timeline {
    max-width: 1200px; /* Increased from 900px to use more screen width */
    margin: 0 auto;
    position: relative;
    padding: 0 40px; /* Added padding for better spacing */
}

.education-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, #9b59b6, #8e44ad);
    border-radius: 2px;
}

.education .timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: 40px; /* Increased from 30px for better spacing */
    position: relative;
    margin: 40px 0; /* Reduced from 60px */
    width: 52%; /* Increased from 50% to use more space */
}

.education .timeline-item:nth-child(odd) {
    align-self: flex-end;
    justify-content: flex-start;
    padding-left: 40px; /* Increased from 30px for better spacing */
    padding-right: 0;
}

.education .timeline-dot {
    height: 20px; /* Reduced from 24px */
    width: 20px;
    background: linear-gradient(135deg, #9b59b6, #8e44ad);
    border-radius: 50%;
    position: absolute;
    top: 15px; /* Adjusted from 20px */
    right: -10px; /* Adjusted from -12px */
    z-index: 10;
    border: 3px solid white; /* Reduced from 4px */
    box-shadow: 0 3px 10px rgba(155, 89, 182, 0.3);
}

.education .timeline-item:nth-child(odd) .timeline-dot {
    left: -10px; /* Adjusted from -12px */
}

.education .timeline-content {
    background: white;
    padding: 2.5rem; /* Increased from 2rem for better content spacing */
    border-radius: 15px; /* Reduced from 20px */
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08); /* Reduced shadow */
    position: relative;
    width: 100%;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.education .timeline-content:hover {
    transform: translateY(-3px); /* Reduced from -5px */
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12); /* Reduced shadow */
}

.education .timeline-content h3 {
    font-size: 1.4rem; /* Reduced from 1.6rem */
    color: #2c3e50;
    margin-bottom: 0.4rem; /* Reduced from 0.5rem */
    font-weight: 700;
    line-height: 1.3;
}

.education .timeline-content h4 {
    color: #9b59b6;
    margin-bottom: 0.6rem; /* Reduced from 0.8rem */
    font-size: 1rem; /* Reduced from 1.1rem */
    font-weight: 600;
}

.education .timeline-date {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
    padding: 0.4rem 0.8rem; /* Reduced padding */
    border-radius: 15px; /* Reduced from 20px */
    font-size: 0.8rem; /* Reduced from 0.9rem */
    display: inline-block;
    margin-bottom: 1rem; /* Reduced from 1.5rem */
    font-weight: 600;
}

.education .timeline-content p {
    color: #555;
    line-height: 1.6; /* Reduced from 1.8 */
    margin-bottom: 1rem; /* Reduced from 1.5rem */
    font-size: 0.95rem; /* Reduced from 1rem */
}

/* Experience Section */
.experience {
    background: #f8f9fa;
    padding: 80px 0; /* Reduced from 100px */
}

.experience-timeline {
    max-width: 1200px; /* Increased from 900px to use more screen width */
    margin: 0 auto;
    position: relative;
    padding: 0 40px; /* Added padding for better spacing */
}

.experience-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, #3498db, #2980b9);
    border-radius: 2px;
}

.experience-timeline .timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: 40px; /* Increased from 30px for better spacing */
    position: relative;
    margin: 40px 0; /* Reduced from 60px */
    width: 52%; /* Increased from 50% to use more space */
}

.experience-timeline .timeline-item:nth-child(odd) {
    align-self: flex-end;
    justify-content: flex-start;
    padding-left: 40px; /* Increased from 30px for better spacing */
    padding-right: 0;
}

.experience-timeline .timeline-dot {
    height: 20px; /* Reduced from 24px */
    width: 20px;
    background: linear-gradient(135deg, #3498db, #2980b9);
    border-radius: 50%;
    position: absolute;
    top: 15px; /* Adjusted from 20px */
    right: -10px; /* Adjusted from -12px */
    z-index: 10;
    border: 3px solid white; /* Reduced from 4px */
    box-shadow: 0 3px 10px rgba(52, 152, 219, 0.3);
}

.experience-timeline .timeline-item:nth-child(odd) .timeline-dot {
    left: -10px; /* Adjusted from -12px */
}

.experience-timeline .timeline-content {
    background: white;
    padding: 2.5rem; /* Increased from 2rem for better content spacing */
    border-radius: 15px; /* Reduced from 20px */
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08); /* Reduced shadow */
    position: relative;
    width: 100%;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.experience-timeline .timeline-content:hover {
    transform: translateY(-3px); /* Reduced from -5px */
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12); /* Reduced shadow */
}

.experience-timeline .timeline-content h3 {
    font-size: 1.4rem; /* Reduced from 1.6rem */
    color: #2c3e50;
    margin-bottom: 0.4rem; /* Reduced from 0.5rem */
    font-weight: 700;
    line-height: 1.3;
}

.experience-timeline .timeline-content h4 {
    color: #3498db;
    margin-bottom: 0.6rem; /* Reduced from 0.8rem */
    font-size: 1rem; /* Reduced from 1.1rem */
    font-weight: 600;
}

.experience-timeline .timeline-date {
    background: linear-gradient(135deg, #f39c12, #e67e22);
    color: white;
    padding: 0.4rem 0.8rem; /* Reduced padding */
    border-radius: 15px; /* Reduced from 20px */
    font-size: 0.8rem; /* Reduced from 0.9rem */
    display: inline-block;
    margin-bottom: 1rem; /* Reduced from 1.5rem */
    font-weight: 600;
}

.experience-timeline .timeline-content p {
    color: #555;
    line-height: 1.6; /* Reduced from 1.8 */
    margin-bottom: 1rem; /* Reduced from 1.5rem */
    font-size: 0.95rem; /* Reduced from 1rem */
}

.experience-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem; /* Reduced from 0.8rem */
    margin-top: 1rem; /* Reduced from 1.5rem */
}

.exp-skill {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    padding: 0.4rem 0.8rem; /* Reduced padding */
    border-radius: 15px; /* Reduced from 20px */
    font-size: 0.8rem; /* Reduced from 0.85rem */
    font-weight: 500;
    transition: transform 0.2s ease;
}

.exp-skill:hover {
    transform: translateY(-1px); /* Reduced from -2px */
}

/* Contact Section */
.contact {
    background: #2c3e50;
    color: white;
}

.contact .section-title {
    color: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.contact-info p {
    margin-bottom: 2rem;
    opacity: 0.8;
    line-height: 1.6;
}

.contact-details {
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.contact-item i {
    color: #3498db;
    width: 20px;
}

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

.social-link {
    width: 40px;
    height: 40px;
    background: #3498db;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: #f39c12;
    transform: translateY(-3px);
}

/* Contact Form */
.contact-form {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 15px;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: none;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-family: inherit;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.2);
}

/* Form message styles */
.form-message {
    padding: 12px 16px;
    margin-bottom: 20px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
    animation: slideIn 0.3s ease-out;
}

.form-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Form feedback styles */
.form-feedback {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    animation: slideInFade 0.3s ease-out;
}

.form-feedback-success {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

.form-feedback-error {
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

.form-feedback-info {
    background-color: #d1ecf1;
    border: 1px solid #bee5eb;
    color: #0c5460;
}

.feedback-content {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.feedback-content i {
    font-size: 1.1rem;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInFade {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Contact form loading state */
.contact-form button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    background-color: #6c757d;
}

.contact-form button:disabled:hover {
    background-color: #6c757d;
    transform: none;
}

/* Form validation styles */
.form-group input:invalid:not(:placeholder-shown),
.form-group textarea:invalid:not(:placeholder-shown) {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

.form-group input:valid:not(:placeholder-shown),
.form-group textarea:valid:not(:placeholder-shown) {
    border-color: #28a745;
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}

/* Footer */
.footer {
    background: #1a252f;
    color: white;
    text-align: center;
    padding: 2rem 0;
}

/* Enhanced Experience and Education Highlights */
.experience-highlights, .education-highlights {
    list-style: none;
    margin: 1.5rem 0; /* Reduced from 2rem */
    padding-left: 0;
    background: #f8f9fa;
    padding: 1.2rem; /* Reduced from 1.5rem */
    border-radius: 12px; /* Reduced from 15px */
    border-left: 3px solid #3498db; /* Reduced from 4px */
}

.education-highlights {
    border-left-color: #9b59b6;
}

.experience-highlights li, .education-highlights li {
    position: relative;
    padding-left: 1.8rem; /* Reduced from 2rem */
    margin-bottom: 0.8rem; /* Reduced from 1rem */
    color: #444;
    font-size: 0.95rem; /* Reduced from 1rem */
    line-height: 1.6; /* Reduced from 1.7 */
    transition: all 0.2s ease;
}

.experience-highlights li:last-child, .education-highlights li:last-child {
    margin-bottom: 0;
}

.experience-highlights li::before, .education-highlights li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    color: #27ae60;
    font-weight: bold;
    font-size: 1rem; /* Reduced from 1.2rem */
    background: white;
    border: 2px solid #27ae60;
    border-radius: 50%;
    width: 20px; /* Reduced from 24px */
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px; /* Reduced from 12px */
}

.experience-highlights li:hover, .education-highlights li:hover {
    color: #2c3e50;
    transform: translateX(3px); /* Reduced from 5px */
}

.education-highlights li strong {
    color: #9b59b6;
    font-weight: 700;
}

.experience-highlights li strong {
    color: #3498db;
    font-weight: 700;
}

/* Enhanced animation support */
* {
    /* Enable hardware acceleration for smoother animations */
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    -webkit-perspective: 1000;
    perspective: 1000;
}

/* Improve will-change for animated elements - apply only on hover */
.profile-img {
    will-change: transform, opacity;
}

.project-card:hover,
.skill-category:hover {
    will-change: transform, box-shadow;
}

/* Force GPU acceleration for mobile */
@media (max-width: 768px) {
    .profile-img,
    .project-card,
    .skill-category {
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
    }
}

/* Fix for iOS Safari animation issues */
@supports (-webkit-touch-callout: none) {
    .section-animate {
        -webkit-transform: translateZ(0);
        transform: translateZ(0);
    }
    
    .profile-img {
        -webkit-transform: translateZ(0) scale(1);
        transform: translateZ(0) scale(1);
    }
}

/* Ensure animations work on all browsers */
@-webkit-keyframes fadeInProfile {
    from {
        opacity: 0;
        -webkit-transform: scale(0.8);
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        -webkit-transform: scale(1);
        transform: scale(1);
    }
}

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

@-webkit-keyframes pulse {
    0% {
        -webkit-box-shadow: 0 2px 8px rgba(243, 156, 18, 0.4);
        box-shadow: 0 2px 8px rgba(243, 156, 18, 0.4);
    }
    50% {
        -webkit-box-shadow: 0 2px 15px rgba(243, 156, 18, 0.6);
        box-shadow: 0 2px 15px rgba(243, 156, 18, 0.6);
    }
    100% {
        -webkit-box-shadow: 0 2px 8px rgba(243, 156, 18, 0.4);
        box-shadow: 0 2px 8px rgba(243, 156, 18, 0.4);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        font-size: 14px;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .hamburger {
        display: flex;
        z-index: 1001;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: rgba(255, 255, 255, 0.98);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.1);
        padding: 2rem 0;
        z-index: 1000;
        -webkit-backdrop-filter: blur(10px);
        backdrop-filter: blur(10px);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu .nav-link {
        margin: 1rem 0;
        font-size: 1.1rem;
    }
    
    .hero {
        padding: 100px 0 50px 0;
        min-height: 80vh;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }
    
    .hero-text h1 {
        font-size: 2.2rem;
        line-height: 1.2;
        margin-bottom: 1rem;
    }
    
    .hero-text h2 {
        font-size: 1.3rem;
        margin-bottom: 1rem;
    }
    
    .hero-text p {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .hero-image {
        padding-left: 0;
    }
    
    .profile-img {
        width: 220px;
        height: 220px;
        margin: 0 auto;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
        margin-top: 2rem;
    }
    
    .stat h3 {
        font-size: 1.8rem;
    }
    
    .stat p {
        font-size: 0.9rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
        gap: 1.3rem;
    }
    
    .skill-category h3 {
        font-size: 1.1rem;
    }
    
    .skill-item {
        font-size: 0.75rem;
        padding: 0.35rem 0.7rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .section-title {
        font-size: 2.2rem;
        margin-bottom: 3rem;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 30px;
        padding-right: 0;
        justify-content: flex-start;
    }
    
    .timeline-item .timeline-dot {
        left: -10px;
    }
    
    .education-timeline::before {
        left: 0;
    }
}

/* Responsive Design for Experience and Education */
@media (max-width: 768px) {
    /* Reduce section padding on mobile */
    .experience, .education {
        padding: 60px 0;
    }
    
    .experience-timeline, .education-timeline {
        max-width: 100%;
        padding: 0 15px;
    }
    
    .experience-timeline::before, .education-timeline::before {
        left: 15px;
    }
    
    .experience-timeline .timeline-item, .education .timeline-item {
        width: 100%;
        padding-left: 50px;
        padding-right: 0;
        justify-content: flex-start;
        margin: 25px 0; /* Reduced from 40px */
    }
    
    .experience-timeline .timeline-dot, .education .timeline-dot {
        left: 3px;
        top: 12px;
        width: 18px; /* Smaller dots */
        height: 18px;
        border: 3px solid white;
    }
    
    .experience-timeline .timeline-content, .education .timeline-content {
        padding: 1.5rem; /* Reduced from 2rem */
        margin-left: 0;
        border-radius: 15px; /* Slightly smaller radius */
    }
    
    .experience-timeline .timeline-content h3, .education .timeline-content h3 {
        font-size: 1.3rem; /* Slightly smaller */
        margin-bottom: 0.4rem;
        line-height: 1.3;
    }
    
    .experience-timeline .timeline-content h4, .education .timeline-content h4 {
        font-size: 1rem;
        margin-bottom: 0.6rem;
    }
    
    .experience-timeline .timeline-date, .education .timeline-date {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
        margin-bottom: 1rem;
    }
    
    .experience-timeline .timeline-content p, .education .timeline-content p {
        font-size: 0.9rem;
        line-height: 1.6;
        margin-bottom: 1rem;
    }
    
    .experience-highlights, .education-highlights {
        padding: 1rem;
        margin: 1rem 0; /* Reduced margin */
    }
    
    .experience-highlights li, .education-highlights li {
        font-size: 0.9rem;
        padding-left: 1.6rem;
        margin-bottom: 0.6rem;
        line-height: 1.5;
    }
    
    .experience-highlights li::before, .education-highlights li::before {
        width: 18px;
        height: 18px;
        font-size: 9px;
    }
    
    .experience-skills {
        gap: 0.5rem;
        margin-top: 1rem;
    }
    
    .exp-skill {
        padding: 0.3rem 0.7rem;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }
    
    .hero {
        padding: 80px 0 40px 0;
        min-height: 70vh;
    }
    
    .hero-text h1 {
        font-size: 1.8rem;
        line-height: 1.3;
    }
    
    .hero-text h2 {
        font-size: 1.1rem;
    }
    
    .hero-text p {
        font-size: 0.95rem;
        line-height: 1.6;
    }
    
    .section-title {
        font-size: 1.8rem;
        margin-bottom: 2rem;
    }
    
    .profile-img {
        width: 180px;
        height: 180px;
        margin: 0 auto;
        border: 3px solid rgba(255, 255, 255, 0.2);
        animation: fadeInProfile 0.8s ease-out 0.3s forwards;
    }
    
    .nav-logo a {
        font-size: 1.2rem;
    }
    
    .hamburger {
        width: 30px;
        height: 24px;
    }
    
    .bar {
        width: 22px;
        height: 2px;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.8rem;
    }
    
    .stat {
        padding: 1rem 0.5rem;
    }
    
    .stat h3 {
        font-size: 1.5rem;
    }
    
    .stat p {
        font-size: 0.8rem;
    }
    
    /* Optimized timeline for very small screens */
    .experience, .education {
        padding: 50px 0; /* Further reduced padding */
    }
    
    .experience-timeline, .education-timeline {
        padding: 0 10px;
    }
    
    .experience-timeline::before, .education-timeline::before {
        left: 12px;
    }
    
    .experience-timeline .timeline-item, .education .timeline-item {
        padding-left: 40px;
        margin: 20px 0; /* Further reduced spacing */
    }
    
    .experience-timeline .timeline-dot, .education .timeline-dot {
        left: 0px;
        top: 10px;
        width: 16px;
        height: 16px;
        border: 2px solid white;
    }
    
    .experience-timeline .timeline-content, .education .timeline-content {
        padding: 1.2rem; /* Further reduced padding */
        margin: 0;
        border-radius: 12px;
    }
    
    .experience-timeline .timeline-content h3, .education .timeline-content h3 {
        font-size: 1.1rem; /* Smaller heading */
        line-height: 1.3;
        margin-bottom: 0.3rem;
    }
    
    .experience-timeline .timeline-content h4, .education .timeline-content h4 {
        font-size: 0.95rem;
        margin-bottom: 0.5rem;
    }
    
    .experience-timeline .timeline-date, .education .timeline-date {
        padding: 0.3rem 0.6rem;
        font-size: 0.75rem;
        margin-bottom: 0.8rem;
    }
    
    .experience-timeline .timeline-content p, .education .timeline-content p {
        font-size: 0.85rem;
        line-height: 1.5;
        margin-bottom: 0.8rem;
    }
    
    .experience-highlights, .education-highlights {
        padding: 0.8rem;
        margin: 0.8rem 0;
        border-left-width: 3px;
    }
    
    .experience-highlights li, .education-highlights li {
        font-size: 0.85rem;
        padding-left: 1.4rem;
        margin-bottom: 0.5rem;
        line-height: 1.4;
    }
    
    .experience-highlights li::before, .education-highlights li::before {
        width: 16px;
        height: 16px;
        font-size: 8px;
        border-width: 1px;
    }
    
    .experience-skills {
        gap: 0.4rem;
        margin-top: 0.8rem;
    }
    
    .exp-skill {
        padding: 0.25rem 0.6rem;
        font-size: 0.75rem;
        border-radius: 15px;
    }
    
    .contact-content {
        gap: 1.5rem;
    }
    
    .contact-info, .contact-form {
        padding: 0;
    }
    
    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
        width: 100%;
        max-width: 280px;
    }
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.fade-in-left {
    animation: fadeInLeft 0.6s ease-out;
}

.fade-in-right {
    animation: fadeInRight 0.6s ease-out;
}

.slide-in-up {
    animation: slideInUp 0.8s ease-out;
}

.scale-in {
    animation: scaleIn 0.6s ease-out;
}

.bounce-in {
    animation: bounceIn 0.8s ease-out;
}

/* Scroll animations - enhanced */
.section-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.section-animate.visible,
.section-animate.animate {
    opacity: 1;
    transform: translateY(0);
}

/* Enhanced animations for individual elements */
.skill-category,
.project-card {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.skill-category.animate,
.project-card.animate {
    opacity: 1;
    transform: translateY(0);
}

/* Ensure hover effects work after animation */
.skill-category.animate,
.project-card.animate {
    transition: transform 0.3s ease, box-shadow 0.3s ease, opacity 0.6s ease-out;
}

/* Staggered animations for children */
.animate-children > * {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

.animate-children.visible > * {
    opacity: 1;
    transform: translateY(0);
}

.animate-children.visible > *:nth-child(1) { transition-delay: 0.1s; }
.animate-children.visible > *:nth-child(2) { transition-delay: 0.2s; }
.animate-children.visible > *:nth-child(3) { transition-delay: 0.3s; }
.animate-children.visible > *:nth-child(4) { transition-delay: 0.4s; }
.animate-children.visible > *:nth-child(5) { transition-delay: 0.5s; }
.animate-children.visible > *:nth-child(6) { transition-delay: 0.6s; }

/* Card hover animations - enhanced and consolidated */
.project-card.animate {
    transition: transform 0.3s ease, box-shadow 0.3s ease, opacity 0.6s ease-out;
}

.skill-category.animate {
    transition: transform 0.3s ease, box-shadow 0.3s ease, opacity 0.6s ease-out;
}

.project-card.animate:hover {
    transform: translateY(-8px) !important;
    box-shadow: 0 15px 35px rgba(52, 152, 219, 0.15) !important;
}

.skill-category.animate:hover {
    transform: translateY(-6px) !important;
    box-shadow: 0 12px 30px rgba(52, 152, 219, 0.15) !important;
}

/* Mobile-optimized animations */
@media (max-width: 768px) {
    .section-animate {
        transition: all 0.5s ease-out;
    }
    
    /* Keep hover effects on mobile but make them lighter */
    .project-card:hover {
        transform: translateY(-5px) !important;
        box-shadow: 0 10px 25px rgba(52, 152, 219, 0.12) !important;
    }
    
    .skill-category:hover {
        transform: translateY(-4px) !important;
        box-shadow: 0 8px 20px rgba(52, 152, 219, 0.12) !important;
    }
    
    /* Reduce motion for mobile users but preserve hover effects */
    @media (prefers-reduced-motion: reduce) {
        * {
            animation-duration: 0.01ms !important;
            animation-iteration-count: 1 !important;
        }
        
        /* Keep hover transitions but make them faster */
        .skill-category:hover,
        .project-card:hover {
            transition-duration: 0.1s !important;
        }
    }
}

/* Ensure animations work on touch devices */
@media (hover: none) and (pointer: coarse) {
    .project-card:active {
        transform: translateY(-3px);
    }
    
    .skill-category:active {
        transform: translateY(-2px);
    }
}