* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
}

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

/* Header */
.header {
    text-align: center;
    margin-bottom: 40px;
    color: white;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 10px;
}

.logo i {
    font-size: 3rem;
    color: #ffd700;
}

.logo h1 {
    font-size: 3rem;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    font-weight: 300;
    margin-bottom: 20px;
}

/* Navigation Tabs */
.nav-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.nav-tab {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    padding: 12px 20px;
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav-tab:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.nav-tab.active {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
}

.nav-tab i {
    font-size: 1.1rem;
}

.nav-tab span {
    font-size: 0.9rem;
}

/* Main Content */
.main-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

/* Download Card */
.download-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
}

.file-info {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 2px solid #f0f0f0;
}

.file-icon {
    background: linear-gradient(135deg, #667eea, #764ba2);
    width: 80px;
    height: 80px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.file-icon i {
    font-size: 2.5rem;
    color: white;
}

.file-details h2 {
    font-size: 2rem;
    margin-bottom: 10px;
    color: #333;
}

.file-size {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 15px;
}

.file-description {
    color: #777;
    line-height: 1.6;
}

/* Download Section */
.download-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.features h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: #333;
}

.features ul {
    list-style: none;
}

.features li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    font-size: 1.1rem;
    color: #555;
}

.features i {
    color: #667eea;
    font-size: 1.2rem;
    width: 20px;
    text-align: center;
}

/* Download Button */
.download-button-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.download-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 20px 40px;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
    min-width: 250px;
    justify-content: center;
    text-decoration: none;
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.6);
}

.download-btn:active {
    transform: translateY(-1px);
}

.download-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Discord Section */
.discord-section {
    text-align: center;
    margin-top: 20px;
}

.discord-btn {
    background: linear-gradient(135deg, #7289da, #5865f2);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 8px 25px rgba(114, 137, 218, 0.4);
    text-decoration: none;
    margin: 0 auto;
    justify-content: center;
    min-width: 200px;
}

.discord-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(114, 137, 218, 0.6);
}

.discord-desc {
    margin-top: 10px;
    font-size: 0.9rem;
    color: #666;
    max-width: 250px;
    margin-left: auto;
    margin-right: auto;
}

/* Progress Bar */
.download-progress {
    width: 100%;
    max-width: 300px;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: #f0f0f0;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 10px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    text-align: center;
    color: #666;
    font-size: 0.9rem;
}

/* Info Section */
.info-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.info-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.info-card i {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 15px;
}

.info-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: #333;
}

.info-card p {
    color: #666;
}

/* Video Section */
.video-section {
    margin-top: 20px;
}

.video-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    text-align: center;
}

.video-card h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #333;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.video-card h3 i {
    color: #ff0000;
}

.video-container {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto 20px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.video-container iframe {
    border-radius: 15px;
    width: 100%;
    height: 400px;
}

.video-desc {
    color: #666;
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Promoted Tools Section */
.promoted-tools {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    margin-top: 20px;
}

.promoted-tools h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.promoted-tools h2 i {
    color: #ffd700;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
}

.tool-card {
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
    border-radius: 15px;
    padding: 25px;
    border: 2px solid #e9ecef;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
    border-color: #667eea;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.tool-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.tool-icon i {
    font-size: 1.8rem;
    color: white;
}

.tool-content h3 {
    color: #333;
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.tool-content p {
    color: #666;
    margin-bottom: 15px;
    line-height: 1.5;
}

.tool-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.feature-tag {
    background: #e9ecef;
    color: #495057;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 500;
}

.feature-tag.price {
    background: #d4edda;
    color: #155724;
}

.feature-tag i {
    font-size: 0.7rem;
}

.tool-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 12px 24px;
    border-radius: 25px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.tool-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.tool-btn.adobe {
    background: linear-gradient(135deg, #ff6b6b, #ee5a52);
}

.tool-btn.adobe:hover {
    box-shadow: 0 8px 25px rgba(255, 107, 107, 0.4);
}

/* Footer */
.footer {
    margin-top: 40px;
    color: white;
    opacity: 0.9;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 20px;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #ffd700;
}

.footer-section a {
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #ffd700;
}

.footer-section p {
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.2);
}

.footer-bottom p {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 10% auto;
    padding: 0;
    border-radius: 15px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    animation: modalSlideIn 0.3s ease;
}

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

.modal-header {
    padding: 20px 30px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    color: #333;
}

.close {
    color: #aaa;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover {
    color: #333;
}

.modal-body {
    padding: 30px;
}

.modal-body p {
    margin: 0;
    color: #666;
    line-height: 1.6;
}

.modal-footer {
    padding: 20px 30px;
    border-top: 1px solid #eee;
    text-align: right;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .logo h1 {
        font-size: 2rem;
    }
    
    .logo i {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .nav-tabs {
        gap: 8px;
    }
    
    .nav-tab {
        padding: 10px 15px;
    }
    
    .nav-tab span {
        font-size: 0.8rem;
    }
    
    .download-card {
        padding: 25px;
    }
    
    .file-info {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .download-section {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .info-section {
        grid-template-columns: 1fr;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .download-btn {
        min-width: 200px;
        padding: 15px 30px;
        font-size: 1rem;
    }
    
    .discord-btn {
        min-width: 180px;
        padding: 12px 25px;
        font-size: 0.9rem;
    }
    
    .video-container iframe {
        height: 250px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-section a {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .logo i {
        font-size: 1.5rem;
    }
    
    .subtitle {
        font-size: 0.9rem;
    }
    
    .nav-tabs {
        flex-direction: column;
        gap: 5px;
    }
    
    .nav-tab {
        justify-content: center;
    }
    
    .file-details h2 {
        font-size: 1.5rem;
    }
    
    .download-card {
        padding: 20px;
    }
    
    .video-card {
        padding: 20px;
    }
    
    .promoted-tools {
        padding: 25px;
    }
    
    .video-container iframe {
        height: 200px;
    }
    
    .features li {
        font-size: 1rem;
    }
    
    .info-card {
        padding: 20px;
    }
    
    .info-card h3 {
        font-size: 1.1rem;
    }
    
    .info-card i {
        font-size: 2rem;
    }
    
    .tool-card {
        padding: 20px;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
}

/* Thêm hiệu ứng cho mobile touch */
@media (hover: none) and (pointer: coarse) {
    .download-btn:active,
    .discord-btn:active,
    .tool-btn:active {
        transform: scale(0.95);
    }
    
    .info-card:active,
    .tool-card:active {
        transform: scale(0.98);
    }
}