.portfolio-section {
    padding: 80px 20px 60px;
    max-width: 1400px;
    margin: 100px auto;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
}

.section-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 30px;
    backdrop-filter: blur(20px);
    animation: badgeGlow 3s ease-in-out infinite alternate;
}

@keyframes badgeGlow {
    0% { box-shadow: 0 0 20px rgba(244, 196, 48, 0.2); }
    100% { box-shadow: 0 0 40px rgba(244, 196, 48, 0.4); }
}

.section-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -2px;
    margin-bottom: 25px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    animation: titleSlide 1s ease-out;
}

@keyframes titleSlide {
    0% { transform: translateY(50px); opacity: 0; }
    100% { transform: translateY(0); opacity: 1; }
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

.section-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: var(--text-secondary);
    font-weight: 300;
    font-family: 'Poppins', sans-serif;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
    padding: 0 20px;
}

.filter-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 50px;
    position: relative;
}

.filter-btn {
    background: var(--card-bg);
    border: 2px solid transparent;
    color: var(--text-secondary);
    padding: 12px 24px;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
    font-size: 0.85rem;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(20px);
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--accent-gradient);
    transition: left 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: -1;
}

.filter-btn:hover,
.filter-btn.active {
    color: var(--dark-bg);
    border-color: var(--primary-gold);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 35px rgba(244, 196, 48, 0.3);
}

.filter-btn:hover::before,
.filter-btn.active::before {
    left: 0;
}

/* Grid Layout for Centered Alignment */
.portfolio-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    margin-top: 40px;
    justify-content: center;
    align-items: flex-start;
}

.portfolio-item {
    position: relative;
    background: var(--card-bg);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    height: auto;
    width: calc((100% - 60px) / 3);
    min-width: 380px;
    max-width: 450px;
}

.portfolio-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
}

.portfolio-item:hover {
    transform: translateY(-8px);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.4),
        0 0 30px rgba(244, 196, 48, 0.2);
    border-color: var(--primary-gold);
}

.portfolio-item:hover::before {
    opacity: 0.08;
}

/* Fixed Image Dimensions with Video Support */
.portfolio-media {
    width: 100%;
    height: 240px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #1a1a1a 100%);
    flex-shrink: 0;
}

.portfolio-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    filter: grayscale(10%) brightness(0.9);
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
}

.portfolio-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 3;
}

.portfolio-item:hover .portfolio-thumbnail {
    transform: scale(1.05);
    filter: grayscale(0%) brightness(1);
    opacity: 0;
}

.portfolio-item:hover .portfolio-video {
    opacity: 1;
}

/* Play button overlay */
.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(244, 196, 48, 0.15);
    border: 2px solid var(--primary-gold);
    border-radius: 50%;
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 4;
    pointer-events: none;
}

.play-button::before {
    content: '▶';
    color: var(--primary-gold);
    font-size: 18px;
    margin-left: 3px;
}

.portfolio-item:not(:hover) .play-button {
    opacity: 1;
    background: rgba(244, 196, 48, 0.2);
}

.portfolio-item:hover .play-button {
    opacity: 0;
    transform: translate(-50%, -50%) scale(1.2);
}

/* Loading indicator for videos */
.video-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 30px;
    height: 30px;
    border: 2px solid rgba(244, 196, 48, 0.2);
    border-top: 2px solid var(--primary-gold);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    z-index: 5;
    opacity: 0;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.video-loading.show {
    opacity: 1;
}

/* Fixed Content Layout */
.portfolio-content {
    padding: 24px 20px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    position: relative;
    z-index: 2;
}

.portfolio-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
    transition: all 0.3s ease;
    line-height: 1.3;
}

.portfolio-category {
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
    position: relative;
    padding-left: 16px;
    transition: all 0.3s ease;
}

.portfolio-category::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 2px;
    background: var(--primary-gold);
    transition: all 0.3s ease;
}

.portfolio-item:hover .portfolio-title {
    color: var(--primary-gold);
    transform: translateX(5px);
}

.portfolio-item:hover .portfolio-category {
    color: var(--text-primary);
    transform: translateX(5px);
}

.portfolio-item:hover .portfolio-category::before {
    width: 12px;
    background: var(--primary-gold);
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

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

.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 200px;
    width: 100%;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(244, 196, 48, 0.2);
    border-top: 3px solid var(--primary-gold);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Focus and accessibility */
.filter-btn:focus {
    outline: 2px solid var(--primary-gold);
    outline-offset: 2px;
}

/* ===== COMPREHENSIVE RESPONSIVE DESIGN ===== */

/* 4K and Ultra-wide screens (3840px+) */
@media (min-width: 3840px) {
    .portfolio-section {
        max-width: 2000px;
        padding: 120px 40px 80px;
    }
    
    .portfolio-item {
        width: calc((100% - 120px) / 4);
        max-width: 500px;
    }
    
    .portfolio-media {
        height: 280px;
    }
    
    .section-title {
        font-size: 5.5rem;
    }
}

/* Large desktops (2560px - 3839px) */
@media (min-width: 2560px) and (max-width: 3839px) {
    .portfolio-section {
        max-width: 1800px;
        padding: 100px 40px 70px;
    }
    
    .portfolio-item {
        width: calc((100% - 90px) / 4);
        max-width: 480px;
    }
    
    .portfolio-media {
        height: 260px;
    }
}

/* Standard desktops (1920px - 2559px) */
@media (min-width: 1920px) and (max-width: 2559px) {
    .portfolio-section {
        max-width: 1600px;
    }
    
    .portfolio-item {
        width: calc((100% - 90px) / 4);
        max-width: 420px;
    }
}

/* Large tablets in landscape and small desktops (1440px - 1919px) */
@media (min-width: 1440px) and (max-width: 1919px) {
    .portfolio-section {
        padding: 70px 30px 50px;
        margin: 80px auto;
    }
    
    .portfolio-item {
        width: calc((100% - 60px) / 3);
        min-width: 360px;
        max-width: 420px;
    }
    
    .section-header {
        margin-bottom: 50px;
    }
}

/* Large tablets and small laptops (1200px - 1439px) */
@media (min-width: 1200px) and (max-width: 1439px) {
    .portfolio-section {
        padding: 60px 25px 45px;
        margin: 70px auto;
    }
    
    .portfolio-item {
        width: calc((100% - 45px) / 2.5);
        min-width: 350px;
        max-width: 400px;
    }
    
    .portfolio-grid {
        gap: 25px;
    }
}

/* Tablets in landscape and medium screens (992px - 1199px) */
@media (min-width: 992px) and (max-width: 1199px) {
    .portfolio-section {
        padding: 60px 20px 40px;
        margin: 60px auto;
    }
    
    .portfolio-item {
        width: calc((100% - 30px) / 2);
        min-width: 320px;
        max-width: 380px;
    }
    
    .portfolio-media {
        height: 220px;
    }
    
    .section-badge {
        padding: 7px 18px;
        font-size: 0.8rem;
    }
}

/* Tablets in portrait (768px - 991px) */
@media (min-width: 768px) and (max-width: 991px) {
    .portfolio-section {
        padding: 50px 18px 35px;
        margin: 50px auto;
    }
    
    .portfolio-grid {
        gap: 20px;
    }
    
    .portfolio-item {
        width: calc((100% - 20px) / 2);
        min-width: 300px;
        max-width: 360px;
    }
    
    .portfolio-media {
        height: 200px;
    }
    
    .filter-container {
        gap: 10px;
        margin-bottom: 40px;
    }
    
    .filter-btn {
        padding: 10px 20px;
        font-size: 0.8rem;
        letter-spacing: 0.5px;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .section-badge {
        padding: 6px 16px;
        font-size: 0.75rem;
        margin-bottom: 20px;
    }
    
    .portfolio-content {
        padding: 20px 16px 16px;
    }
    
    .portfolio-title {
        font-size: 1.2rem;
    }
    
    .play-button {
        width: 50px;
        height: 50px;
    }
    
    .play-button::before {
        font-size: 16px;
    }
}

/* Large mobile devices (576px - 767px) */
@media (min-width: 576px) and (max-width: 767px) {
    .portfolio-section {
        padding: 40px 16px 30px;
        margin: 40px auto 20px;
    }
    
    .portfolio-grid {
        gap: 18px;
    }
    
    .portfolio-item {
        width: 100%;
        max-width: 480px;
        min-width: auto;
    }
    
    .portfolio-media {
        height: 200px;
    }
    
    .filter-container {
        gap: 8px;
        margin-bottom: 30px;
        padding: 0 5px;
    }
    
    .filter-btn {
        padding: 9px 16px;
        font-size: 0.75rem;
    }
    
    .section-title::after {
        width: 80px;
        height: 2px;
    }
    
    .portfolio-content {
        padding: 18px 14px 14px;
    }
    
    .portfolio-title {
        font-size: 1.15rem;
        margin-bottom: 6px;
    }
    
    .portfolio-category {
        font-size: 0.8rem;
        padding-left: 14px;
    }
    
    .portfolio-category::before {
        width: 6px;
    }
}

/* Standard mobile devices (480px - 575px) */
@media (min-width: 480px) and (max-width: 575px) {
    .portfolio-section {
        padding: 35px 14px 25px;
        margin: 30px auto 15px;
    }
    
    .portfolio-grid {
        gap: 16px;
    }
    
    .portfolio-item {
        width: 100%;
        max-width: 450px;
        border-radius: 12px;
    }
    
    .portfolio-media {
        height: 180px;
    }
    
    .filter-container {
        gap: 6px;
        margin-bottom: 25px;
    }
    
    .filter-btn {
        padding: 8px 14px;
        font-size: 0.7rem;
        border-radius: 40px;
    }
    
    .section-badge {
        padding: 5px 14px;
        font-size: 0.7rem;
        margin-bottom: 15px;
    }
    
    .section-title::after {
        width: 60px;
    }
    
    .portfolio-content {
        padding: 16px 12px 12px;
    }
    
    .portfolio-title {
        font-size: 1.1rem;
    }
    
    .play-button {
        width: 45px;
        height: 45px;
    }
    
    .play-button::before {
        font-size: 14px;
    }
}

/* Small mobile devices (360px - 479px) */
@media (min-width: 360px) and (max-width: 479px) {
    .portfolio-section {
        padding: 30px 12px 20px;
        margin: 25px auto 10px;
    }
    
    .portfolio-grid {
        gap: 14px;
    }
    
    .portfolio-item {
        width: 100%;
        max-width: 400px;
        border-radius: 10px;
    }
    
    .portfolio-media {
        height: 160px;
    }
    
    .filter-container {
        gap: 5px;
        margin-bottom: 20px;
        flex-direction: column;
        align-items: center;
    }
    
    .filter-btn {
        padding: 7px 12px;
        font-size: 0.65rem;
        min-width: 80px;
        text-align: center;
    }
    
    .section-badge {
        padding: 4px 12px;
        font-size: 0.65rem;
        margin-bottom: 12px;
    }
    
    .portfolio-content {
        padding: 14px 10px 10px;
    }
    
    .portfolio-title {
        font-size: 1rem;
        line-height: 1.2;
    }
    
    .portfolio-category {
        font-size: 0.75rem;
        padding-left: 12px;
    }
    
    .portfolio-item:hover .portfolio-title,
    .portfolio-item:hover .portfolio-category {
        transform: translateX(3px);
    }
}

/* Extra small devices (320px - 359px) */
@media (max-width: 359px) {
    .portfolio-section {
        padding: 25px 10px 15px;
        margin: 20px auto 5px;
    }
    
    .portfolio-grid {
        gap: 12px;
    }
    
    .portfolio-item {
        width: 100%;
        max-width: 320px;
        border-radius: 8px;
    }
    
    .portfolio-media {
        height: 140px;
    }
    
    .filter-container {
        gap: 4px;
        margin-bottom: 15px;
        flex-direction: column;
        align-items: center;
    }
    
    .filter-btn {
        padding: 6px 10px;
        font-size: 0.6rem;
        min-width: 70px;
        border-radius: 30px;
    }
    
    .section-badge {
        padding: 3px 10px;
        font-size: 0.6rem;
        margin-bottom: 10px;
        letter-spacing: 1px;
    }
    
    .section-title::after {
        width: 40px;
        height: 1px;
    }
    
    .portfolio-content {
        padding: 12px 8px 8px;
    }
    
    .portfolio-title {
        font-size: 0.9rem;
        line-height: 1.1;
        margin-bottom: 4px;
    }
    
    .portfolio-category {
        font-size: 0.7rem;
        padding-left: 10px;
        letter-spacing: 0.5px;
    }
    
    .portfolio-category::before {
        width: 5px;
        height: 1px;
    }
    
    .play-button {
        width: 35px;
        height: 35px;
    }
    
    .play-button::before {
        font-size: 12px;
        margin-left: 2px;
    }
    
    .video-loading {
        width: 20px;
        height: 20px;
        border-width: 1px;
    }
    
    .spinner {
        width: 30px;
        height: 30px;
        border-width: 2px;
    }
}

/* Landscape orientation adjustments for mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .portfolio-section {
        margin: 20px auto 10px;
        padding: 20px 15px 15px;
    }
    
    .section-header {
        margin-bottom: 25px;
    }
    
    .section-badge {
        margin-bottom: 10px;
    }
    
    .portfolio-media {
        height: 120px;
    }
    
    .filter-container {
        margin-bottom: 15px;
        gap: 5px;
    }
    
    .portfolio-grid {
        gap: 10px;
    }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 2dppx) {
    .portfolio-thumbnail,
    .portfolio-video {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .portfolio-item:hover {
        transform: none;
    }
    
    .portfolio-item:hover .portfolio-thumbnail {
        transform: none;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .portfolio-item {
        border-color: rgba(255, 255, 255, 0.1);
    }
}

/* Print styles */
@media print {
    .portfolio-section {
        padding: 20px;
        margin: 0;
        max-width: none;
    }
    
    .portfolio-item {
        break-inside: avoid;
        width: calc((100% - 20px) / 2);
        margin-bottom: 20px;
    }
    
    .portfolio-media {
        height: 150px;
    }
    
    .filter-container,
    .play-button,
    .video-loading {
        display: none;
    }
}