/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #e0e0e0;
    background-color: #1a1a1a;
    overflow-x: hidden;
}

/* ===== UTILITY CLASSES ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.6);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.btn-secondary {
    background: transparent;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.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: #667eea;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: #e0e0e0;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #667eea;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #667eea;
    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: #e0e0e0;
    margin: 3px 0;
    transition: 0.3s;
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(102,126,234,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.text-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-name {
    display: block;
    color: #e0e0e0;
    margin-top: 0.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #667eea;
    margin-bottom: 1rem;
    font-weight: 500;
}

.hero-description {
    font-size: 1.1rem;
    color: #b0b0b0;
    margin-bottom: 2rem;
    line-height: 1.6;
}

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

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 1s ease-out 0.3s both;
}

.floating-card {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: white;
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3);
    animation: float 6s ease-in-out infinite;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 30px;
    height: 30px;
    border: 2px solid #667eea;
    border-top: none;
    border-left: none;
    transform: rotate(45deg);
}

/* ===== SECTIONS ===== */
section {
    padding: 5rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #e0e0e0;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

/* ===== ABOUT SECTION ===== */
.about {
    background: #2a2a2a;
}

/* ===== EDUCATION SECTION ===== */
.education {
    background: #1a1a1a;
}

.education-timeline {
    margin-bottom: 3rem;
}

.education-item {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
    padding: 2rem;
    background: #2a2a2a;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.education-item:hover {
    transform: translateY(-5px);
}

.education-item::before {
    content: '';
    position: absolute;
    left: 160px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

.education-date {
    font-weight: 700;
    color: #667eea;
    font-size: 1.15rem;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    letter-spacing: 0.05em;
    line-height: 1.5;
    padding: 0.5rem 1rem 0.5rem 0;
    word-break: keep-all;
    white-space: nowrap;
    max-width: 100%;
    box-sizing: border-box;
}

.education-institution h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #e0e0e0;
    margin-bottom: 0.5rem;
}

.education-institution h4 {
    font-size: 1rem;
    color: #667eea;
    font-weight: 500;
    margin-bottom: 1rem;
}

.education-details p {
    margin-bottom: 0.75rem;
    color: #b0b0b0;
    line-height: 1.6;
}

.coursework-section {
    margin-bottom: 0.75rem;
}

.coursework-section strong {
    color: #e0e0e0;
    display: block;
    margin-bottom: 0.5rem;
}

.coursework-list {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0 0 0;
    color: #b0b0b0;
}

.coursework-list li {
    padding: 0.25rem 0 0.25rem 1.5rem;
    position: relative;
    line-height: 1.6;
}

.coursework-list li::before {
    content: '▸';
    color: #667eea;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.education-achievements {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.achievement-tag {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.certifications {
    margin-top: 3rem;
}

.certifications-title {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: #333;
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.cert-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.cert-item:hover {
    transform: translateY(-3px);
}

.cert-item i {
    font-size: 2rem;
    color: #667eea;
}

.cert-content h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.25rem;
}

.cert-content p {
    font-size: 0.9rem;
    color: #666;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    color: #b0b0b0;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

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

.stat {
    text-align: center;
    padding: 1.5rem;
    background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
    border-radius: 12px;
    transition: transform 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat:hover {
    transform: translateY(-5px);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: #b0b0b0;
    font-weight: 500;
}

.about-image {
    display: flex;
    justify-content: center;
}

.image-placeholder {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: white;
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3);
}

/* ===== PROJECTS SECTION ===== */
.projects {
    background: #2a2a2a;
}

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

.project-card {
    background: #1a1a1a;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.project-image {
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    position: relative;
    overflow: hidden;
}

.project-media-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

/* Show media container when it has images (for preview) */
.project-media-container.has-images {
    opacity: 1;
}

.project-card:hover .project-media-container {
    opacity: 1;
}

/* Hide placeholder when media container has images */
.project-media-container.has-images ~ .project-placeholder {
    opacity: 0;
}

.project-card:hover .project-placeholder {
    opacity: 0;
}

.project-placeholder {
    transition: opacity 0.3s ease;
    z-index: 1;
}

.project-images {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-images img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 0.5s ease;
    display: block;
}

.project-images img.active {
    opacity: 1;
    z-index: 2;
}

/* First image should be visible by default for preview */
.project-images img:first-child.active {
    opacity: 1;
}

.project-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 3;
}

.project-video.active {
    opacity: 1;
}

/* Ensure images are visible when video is not active */
.project-images {
    z-index: 2;
}

.project-video video,
.project-video .gif-media {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-video video {
    background: #000;
}

.project-content {
    padding: 1.5rem;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: #e0e0e0;
}

.project-type {
    display: inline-block;
    background: #e3f2fd;
    color: #1976d2;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.project-type.status-in-progress {
    background: #ffeb3b;
    color: #333;
    margin-right: 0.5rem;
}

.project-description {
    color: #b0b0b0;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.project-description p {
    margin-bottom: 1.5rem;
    margin-top: 0;
}

.project-description p:last-of-type {
    margin-bottom: 0;
}

.project-contact-note {
    display: block;
    margin-top: 1.5rem;
    color: #e0e0e0;
    font-weight: 500;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tech-tag {
    background: #333;
    color: #b0b0b0;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

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

.project-link {
    color: #667eea;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.project-link:hover {
    color: #764ba2;
}

.view-media-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

/* ===== PROJECT MODAL ===== */
.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: #1a1a1a;
    margin: 5% auto;
    padding: 0;
    border-radius: 16px;
    width: 90%;
    max-width: 800px;
    max-height: 80vh;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    background: #2a2a2a;
}

.modal-header h2 {
    color: #e0e0e0;
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
}

.close {
    color: #b0b0b0;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
    line-height: 1;
}

.close:hover {
    color: #e0e0e0;
}

.modal-body {
    padding: 2rem;
}

.media-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.tab-btn {
    background: none;
    border: none;
    color: #b0b0b0;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border-bottom: 2px solid transparent;
    font-family: inherit;
}

.tab-btn:hover {
    color: #e0e0e0;
}

.tab-btn.active {
    color: #667eea;
    border-bottom-color: #667eea;
}

.tab-content {
    display: none;
    min-height: 300px;
}

.tab-content.active {
    display: block;
}

.media-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    background: #2a2a2a;
    border-radius: 12px;
    border: 2px dashed rgba(255, 255, 255, 0.2);
    color: #b0b0b0;
    text-align: center;
    padding: 2rem;
}

.media-placeholder i {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 1rem;
}

.media-placeholder p {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: #e0e0e0;
}

.media-placeholder small {
    font-size: 0.9rem;
    color: #b0b0b0;
}

/* Modal responsive design */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        margin: 10% auto;
        max-height: 70vh;
    }
    
    .modal-header {
        padding: 1rem 1.5rem;
    }
    
    .modal-header h2 {
        font-size: 1.25rem;
    }
    
    .modal-body {
        padding: 1.5rem;
    }
    
    .media-tabs {
        flex-direction: column;
        gap: 0;
    }
    
    .tab-btn {
        text-align: left;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 0;
    }
    
    .tab-btn.active {
        border-bottom-color: #667eea;
    }
}

/* ===== EXPANDED PROJECT VIEW MODAL ===== */
.expanded-project-modal {
    display: none;
    position: fixed;
    z-index: 10001;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(26, 26, 26, 0.7);
    backdrop-filter: blur(15px) saturate(180%);
    -webkit-backdrop-filter: blur(15px) saturate(180%);
    overflow-y: auto;
    animation: fadeIn 0.3s ease-out;
    padding: 2rem 1rem;
    box-sizing: border-box;
}

.expanded-project-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

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

.expanded-project-content {
    max-width: 1400px;
    width: 100%;
    margin: auto;
    padding: 2rem;
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    animation: slideUp 0.4s ease-out;
    max-height: 90vh;
    overflow-y: auto;
}

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

.expanded-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    color: #b0b0b0;
    font-size: 2.5rem;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
    z-index: 10;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
}

.expanded-close:hover {
    color: #e0e0e0;
    background: rgba(255, 255, 255, 0.2);
}

.expanded-project-body {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
    align-items: start;
}

.expanded-project-media {
    position: sticky;
    top: 2rem;
}

.expanded-images-container,
.expanded-video-container {
    width: 100%;
    border-radius: 16px;
    overflow: hidden;
    background: #2a2a2a;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.expanded-images-container img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    max-height: 600px;
}

.expanded-video-container {
    position: relative;
}

.expanded-video-container video {
    width: 100%;
    height: auto;
    display: block;
    max-height: 600px;
}

.expanded-video-container.active {
    display: block;
}

/* Custom Video Controls */
.custom-video-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.4) 50%, transparent 100%);
    padding: 1rem;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 10;
}

.expanded-video-container:hover .custom-video-controls,
.expanded-video-container.controls-visible .custom-video-controls,
.expanded-video-container:focus-within .custom-video-controls {
    opacity: 1;
    pointer-events: all;
}

.video-controls-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 100%;
}

.video-control-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: #fff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    font-size: 1rem;
    flex-shrink: 0;
}

.video-control-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.video-control-btn:active {
    transform: scale(0.95);
}

.video-progress-container {
    flex: 1;
    position: relative;
    height: 40px;
    display: flex;
    align-items: center;
}

.video-progress-bar {
    position: absolute;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    overflow: hidden;
}

.video-progress-filled {
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    width: 0%;
    transition: width 0.1s linear;
}

.video-seekbar {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    z-index: 2;
    margin: 0;
    padding: 0;
}

.video-seekbar::-webkit-slider-thumb {
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.video-seekbar:hover::-webkit-slider-thumb,
.video-seekbar:active::-webkit-slider-thumb {
    opacity: 1;
}

.video-seekbar::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    border: none;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.video-seekbar:hover::-moz-range-thumb,
.video-seekbar:active::-moz-range-thumb {
    opacity: 1;
}

.video-seekbar::-ms-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.video-seekbar:hover::-ms-thumb,
.video-seekbar:active::-ms-thumb {
    opacity: 1;
}

/* Volume Control */
.volume-control-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.volume-slider-container {
    width: 80px;
    height: 40px;
    display: flex;
    align-items: center;
    position: relative;
}

.volume-slider {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    margin: 0;
    padding: 0;
}

.volume-slider::-webkit-slider-thumb {
    appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    transition: all 0.2s ease;
}

.volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}

.volume-slider::-moz-range-thumb {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

.volume-slider::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}

.volume-slider::-ms-thumb {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

.volume-slider::-ms-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}

/* Fullscreen styles */
.expanded-video-container.fullscreen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 10000;
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0;
}

.expanded-video-container.fullscreen video {
    max-height: 100vh;
    width: auto;
    height: auto;
    max-width: 100vw;
}

.expanded-video-container.fullscreen .custom-video-controls {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
}

.expanded-images-container.active {
    display: block;
}

.expanded-project-info {
    padding: 1rem 0;
}

.expanded-project-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #e0e0e0;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

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

.expanded-project-type {
    display: inline-block;
    background: #e3f2fd;
    color: #1976d2;
    padding: 0.5rem 1rem;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 500;
}

.expanded-project-type.status-in-progress {
    background: #ffeb3b;
    color: #333;
}

.expanded-project-description {
    font-size: 1.2rem;
    color: #b0b0b0;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.expanded-project-description p {
    margin-bottom: 1.5rem;
}

.expanded-project-description p:last-of-type {
    margin-bottom: 0;
}

.expanded-project-description .project-contact-note {
    display: block;
    margin-top: 1.5rem;
    color: #e0e0e0;
    font-weight: 500;
}

.expanded-project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.expanded-project-tech .tech-tag {
    background: #333;
    color: #b0b0b0;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

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

.expanded-project-links .project-link {
    color: #667eea;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: color 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.expanded-project-links .project-link:hover {
    color: #764ba2;
}

/* Expanded modal responsive design */
@media (max-width: 1024px) {
    .expanded-project-body {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .expanded-project-media {
        position: relative;
        top: 0;
    }
}

@media (max-width: 768px) {
    .expanded-project-modal {
        padding: 1rem;
    }
    
    .expanded-project-content {
        padding: 1.5rem;
        border-radius: 16px;
        max-height: 95vh;
    }
    
    .expanded-close {
        top: 1rem;
        right: 1rem;
        font-size: 2rem;
        width: 40px;
        height: 40px;
    }
    
    .expanded-project-title {
        font-size: 2rem;
    }
    
    .expanded-project-description {
        font-size: 1.1rem;
    }
}

/* Make project cards clickable */
.project-card[data-expandable="true"] {
    cursor: pointer;
}

.project-card[data-expandable="true"]:active {
    transform: scale(0.98);
}

/* ===== SKILLS SECTION ===== */
.skills {
    background: #1a1a1a;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.skill-category {
    background: #2a2a2a;
    padding: 2rem;
    border-radius: 16px;
    transition: transform 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.skill-category:hover {
    transform: translateY(-5px);
}

.category-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #e0e0e0;
    text-align: center;
}

.skill-items {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: #1a1a1a;
    border-radius: 8px;
    transition: transform 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.skill-item:hover {
    transform: translateX(5px);
}

.skill-item i {
    font-size: 1.5rem;
    color: #667eea;
}

.skill-item span {
    font-weight: 500;
    color: #e0e0e0;
}

/* ===== CONTACT SECTION ===== */
.contact {
    background: #2a2a2a;
}

.contact-content {
    display: flex;
    justify-content: center;
    max-width: 800px;
    margin: 0 auto;
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #e0e0e0;
}

.contact-info p {
    color: #b0b0b0;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.job-interests {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: #1a1a1a;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.job-interests h4 {
    color: #e0e0e0;
    font-weight: 600;
    margin-bottom: 1rem;
}

.job-interests ul {
    list-style: none;
    padding: 0;
}

.job-interests li {
    color: #b0b0b0;
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.job-interests li::before {
    content: '▸';
    color: #667eea;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.resume-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.resume-link:hover {
    color: #764ba2;
}

.contact-form-container {
    margin-bottom: 2rem;
    padding: 2rem;
    background: #1a1a1a;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-form-container h4 {
    color: #e0e0e0;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

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

.form-group label {
    color: #b0b0b0;
    font-size: 0.9rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    padding: 0.875rem 1rem;
    background: #0f0f0f;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #e0e0e0;
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    transition: all 0.3s ease;
    width: 100%;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #666;
}

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

.form-submit-btn {
    margin-top: 0.5rem;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
}

.form-submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.form-submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.form-submit-btn .btn-loading {
    display: none;
}

.form-submit-btn:disabled .btn-text {
    display: none;
}

.form-submit-btn:disabled .btn-loading {
    display: inline-block;
}

/* Contact form responsive */
@media (max-width: 768px) {
    .contact-form-container {
        padding: 1.5rem;
    }
    
    .contact-form-container h4 {
        font-size: 1.1rem;
    }
}

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

.social-link {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.social-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

/* ===== FOOTER ===== */
.footer {
    background: #0a0a0a;
    color: #e0e0e0;
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

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

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

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

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: #1a1a1a;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.3);
        padding: 2rem 0;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .contact-content {
        flex-direction: column;
        max-width: 100%;
        padding: 0 1rem;
    }

    .skill-items {
        grid-template-columns: 1fr;
    }

    .education-item {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .education-item::before {
        display: none;
    }

    .education-date {
        text-align: left;
    }

    .certifications-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .container {
        padding: 0 15px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 250px;
        text-align: center;
    }
}

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

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

/* ===== SMOOTH SCROLLING ===== */
html {
    scroll-behavior: smooth;
}

/* ===== SELECTION STYLES ===== */
::selection {
    background: #667eea;
    color: white;
}

::-moz-selection {
    background: #667eea;
    color: white;
}