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

body {
    font-family: Arial, sans-serif;
    background: #000;
    color: #fff;
    line-height: 1.6;
    padding-top: 80px;
}

/* Back Button */
.back-btn {
    position: fixed;
    top: 20px;
    left: 20px;
    padding: 10px 20px;
    background: #000;
    color: #fff;
    border: 2px solid;
    border-image: linear-gradient(45deg, red, orange, yellow, green, cyan, blue, violet, red) 1;
    border-radius: 5px;
    cursor: pointer;
    z-index: 1000;
    font-weight: bold;
    transition: transform 0.2s ease;
}

.back-btn:hover {
    transform: scale(1.05);
}

/* User Widget */
.user-widget {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.login-btn {
    padding: 10px 20px;
    background: #000;
    color: #fff;
    border: 2px solid;
    border-image: linear-gradient(45deg, red, orange, yellow, green, cyan, blue, violet, red) 1;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: transform 0.2s ease;
}

.login-btn:hover {
    transform: scale(1.05);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 15px;
    background: #111;
    border: 2px solid;
    border-image: linear-gradient(45deg, red, orange, yellow, green, cyan, blue, violet, red) 1;
    border-radius: 5px;
    cursor: pointer;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid #333;
}

/* Container */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Blog Header */
.blog-header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px;
    background: #111;
    border: 3px solid;
    border-image: linear-gradient(45deg, red, orange, yellow, green, cyan, blue, violet, red) 1;
    border-radius: 10px;
}

.blog-title {
    font-size: 2.5rem;
    margin-bottom: 15px;
    background: linear-gradient(45deg, red, orange, yellow, green, cyan, blue, violet);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.blog-subtitle {
    font-size: 1.1rem;
    color: #ccc;
    max-width: 600px;
    margin: 0 auto;
}

/* Blog Content */
.blog-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.blog-section {
    background: #111;
    padding: 30px;
    border: 3px solid;
    border-image: linear-gradient(45deg, red, orange, yellow, green, cyan, blue, violet, red) 1;
    border-radius: 10px;
}

.section-title {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #fff;
    border-bottom: 2px solid #333;
    padding-bottom: 10px;
}

.section-description {
    font-size: 1.1rem;
    color: #ccc;
    margin-bottom: 25px;
}

/* Gallery */
.gallery {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.gallery-item-wrapper {
    border: 2px solid;
    border-image: linear-gradient(45deg, red, orange, yellow, green, cyan, blue, violet, red) 1;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.2s ease;
}

.gallery-item-wrapper:hover {
    transform: scale(1.02);
}

.gallery-item {
    width: 100%;
    height: auto;
    display: block;
    cursor: pointer;
}

/* Features Table */
.features-table {
    overflow-x: auto;
}

.features-table table {
    width: 100%;
    border-collapse: collapse;
    border: 2px solid;
    border-image: linear-gradient(45deg, red, orange, yellow, green, cyan, blue, violet, red) 1;
    border-radius: 8px;
}

.features-table th,
.features-table td {
    padding: 15px;
    text-align: center;
    border-bottom: 1px solid #333;
}

.features-table th {
    background: #222;
    font-weight: bold;
    color: #fff;
}

.features-table td {
    background: #111;
}

.features-table tr:hover td {
    background: #222;
}

.check {
    color: #00ff00;
    font-size: 1.2rem;
    font-weight: bold;
}

/* Token Section */
.token-section {
    text-align: center;
}

.create-section {
    margin: 25px 0;
}

.create-btn {
    padding: 15px 30px;
    background: #000;
    color: #fff;
    border: 3px solid;
    border-image: linear-gradient(45deg, red, orange, yellow, green, cyan, blue, violet, red) 1;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s ease;
}

.create-btn:hover {
    transform: scale(1.05);
    background: #111;
}

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

/* Token Display */
.token-display {
    margin-top: 25px;
    padding: 20px;
    background: #222;
    border: 2px solid #333;
    border-radius: 8px;
    text-align: left;
}

.token-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 10px;
}

.token-status {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #00ff00;
}

.status-dot {
    width: 10px;
    height: 10px;
    background: #00ff00;
    border-radius: 50%;
    animation: blink 2s infinite;
}

.countdown {
    font-family: 'Courier New', monospace;
    font-weight: bold;
    color: #ff6666;
    font-size: 1.1rem;
}

.token-field {
    margin-bottom: 15px;
}

.token-field label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #ccc;
}

.input-group {
    display: flex;
    gap: 10px;
}

.token-input {
    flex: 1;
    padding: 12px;
    background: #000;
    color: #fff;
    border: 1px solid #333;
    border-radius: 5px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.token-input:focus {
    outline: none;
    border-color: #666;
}

.copy-btn {
    padding: 12px 16px;
    background: #333;
    color: #fff;
    border: 1px solid #555;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.2s ease;
}

.copy-btn:hover {
    background: #444;
}

.warning {
    padding: 10px;
    background: #332200;
    border: 1px solid #664400;
    border-radius: 5px;
    color: #ffcc00;
    font-size: 0.9rem;
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}

.lightbox-img {
    max-width: 90%;
    max-height: 90%;
    border: 3px solid;
    border-image: linear-gradient(45deg, red, orange, yellow, green, cyan, blue, violet, red) 1;
    border-radius: 10px;
}

.close-btn {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 2rem;
    color: #fff;
    cursor: pointer;
    font-weight: bold;
    background: #000;
    border: 2px solid #fff;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.close-btn:hover {
    background: #333;
    transform: scale(1.1);
}

/* Animations (minimal để tiết kiệm điện) */
@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0.3; }
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .blog-header,
    .blog-section {
        padding: 20px;
    }
    
    .blog-title {
        font-size: 2rem;
    }
    
    .token-info {
        flex-direction: column;
        text-align: center;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .back-btn,
    .user-widget {
        position: relative;
        top: auto;
        left: auto;
        right: auto;
        margin: 10px;
    }
    
    body {
        padding-top: 20px;
    }
}

@media (max-width: 480px) {
    .features-table th,
    .features-table td {
        padding: 10px 8px;
        font-size: 0.9rem;
    }
    
    .blog-title {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 1.4rem;
    }
}
/* Download Section */
.download-section {
    text-align: center;
}

.download-btn-wrapper {
    margin-top: 20px;
}

.download-btn {
    padding: 15px 30px;
    background: #000;
    color: #fff;
    border: 3px solid;
    border-image: linear-gradient(45deg, red, orange, yellow, green, cyan, blue, violet, red) 1;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s ease;
}

.download-btn:hover {
    transform: scale(1.05);
    background: #111;
}