/**
 * Additional Custom Styles for SEO Theme - Link Vào VN88
 * This file contains additional styles beyond the main stylesheet
 */

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Default visibility for content */
.feature-card,
.section-content {
    opacity: 1;
    transform: translateY(0);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card {
    animation: fadeIn 0.6s ease-out;
}

/* Hover Effects */
.nav-desktop a {
    position: relative;
}

.nav-desktop a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

/* Button Ripple Effect */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

/* Loading Spinner */
.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

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

/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    background: var(--accent-color);
    color: var(--white);
    transform: translateY(-5px);
}

/* Form Styles */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="number"],
textarea,
select {
    width: 100%;
    padding: 12px 15px;
    margin: 8px 0;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Table Styles */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

table th,
table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

table th {
    background: var(--secondary-color);
    color: var(--white);
    font-weight: 600;
}

table tr:hover {
    background: var(--light-bg);
}

/* Blockquote */
blockquote {
    border-left: 4px solid var(--primary-color);
    padding: 20px 30px;
    margin: 30px 0;
    background: var(--light-bg);
    font-style: italic;
    color: #555;
}

blockquote cite {
    display: block;
    margin-top: 10px;
    font-size: 14px;
    color: #777;
}

/* Code Blocks */
pre {
    background: #2d2d2d;
    color: #f8f8f2;
    padding: 20px;
    border-radius: 5px;
    overflow-x: auto;
    margin: 20px 0;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.5;
}

code {
    background: #f5f5f5;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    color: #e83e8c;
}

pre code {
    background: transparent;
    padding: 0;
    color: inherit;
}

/* Alert Boxes */
.alert {
    padding: 15px 20px;
    border-radius: 5px;
    margin: 20px 0;
}

.alert-info {
    background: #d1ecf1;
    border-left: 4px solid #17a2b8;
    color: #0c5460;
}

.alert-success {
    background: #d4edda;
    border-left: 4px solid #28a745;
    color: #155724;
}

.alert-warning {
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    color: #856404;
}

.alert-danger {
    background: #f8d7da;
    border-left: 4px solid #dc3545;
    color: #721c24;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 30px;
    background: #e0e0e0;
    border-radius: 15px;
    overflow: hidden;
    margin: 20px 0;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transition: width 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

/* Accordion */
.accordion {
    margin: 20px 0;
}

.accordion-item {
    border: 1px solid var(--border-color);
    border-radius: 5px;
    margin-bottom: 10px;
    overflow: hidden;
}

.accordion-header {
    background: var(--light-bg);
    padding: 15px 20px;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accordion-header:hover {
    background: #e9e9e9;
}

.accordion-content {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.accordion-content.active {
    padding: 20px;
    max-height: 1000px;
}

/* Tabs */
.tabs {
    margin: 30px 0;
}

.tab-buttons {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 20px;
}

.tab-button {
    padding: 12px 24px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    color: #666;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: all 0.3s ease;
}

.tab-button:hover {
    color: var(--primary-color);
}

.tab-button.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
    padding: 20px;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 0 0 5px 5px;
}

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

/* Responsive Videos */
.video-container {
    position: relative;
    padding-bottom: 56.25%;
    padding-top: 30px;
    height: 0;
    overflow: hidden;
    margin: 20px 0;
}

.video-container iframe,
.video-container object,
.video-container embed {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Image Gallery */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    cursor: pointer;
}

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

.gallery-item:hover img {
    transform: scale(1.1);
}

/* Testimonial Cards */
.testimonial-card {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    margin: 20px 0;
    border-left: 4px solid var(--primary-color);
}

.testimonial-author {
    display: flex;
    align-items: center;
    margin-top: 20px;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin-right: 15px;
}

.testimonial-author-info h4 {
    margin: 0;
    color: var(--secondary-color);
}

.testimonial-author-info p {
    margin: 0;
    color: #777;
    font-size: 14px;
}

/* Pricing Table */
.pricing-table {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.pricing-card {
    background: var(--white);
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
    border: 2px solid var(--border-color);
}

.pricing-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, #fff 0%, #fff9e6 100%);
}

.pricing-card h3 {
    font-size: 24px;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.pricing-card .price {
    font-size: 48px;
    color: var(--primary-color);
    font-weight: bold;
    margin: 20px 0;
}

.pricing-card .price span {
    font-size: 16px;
    color: #777;
}

.pricing-card ul {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.pricing-card ul li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

/* Timeline */
.timeline {
    position: relative;
    padding: 20px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    width: 2px;
    height: 100%;
    background: var(--primary-color);
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding: 20px 0;
    position: relative;
    width: 50%;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    margin-left: 50%;
}

.timeline-content {
    background: var(--white);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    width: 90%;
    position: relative;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    top: 50%;
    transform: translateY(-50%);
}

.timeline-item:nth-child(odd)::after {
    right: -10px;
}

.timeline-item:nth-child(even)::after {
    left: -10px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 50px;
        padding-right: 0;
    }

    .timeline-item:nth-child(even) {
        margin-left: 0;
    }

    .timeline-item::after {
        left: 10px !important;
    }

    .pricing-table {
        grid-template-columns: 1fr;
    }

    .tab-buttons {
        flex-wrap: wrap;
    }

    .tab-button {
        flex: 1 1 auto;
        text-align: center;
    }
}

/* Print Styles */
@media print {
    .site-header,
    .site-footer,
    .nav-desktop,
    .nav-mobile,
    .menu-toggle,
    .scroll-to-top {
        display: none !important;
    }

    body {
        background: white;
    }

    .content-section {
        padding: 0;
    }
}