/* Activity Feed Section CSS Template */
/* Sử dụng CSS variables từ Section Manager */

.section-activity-feed {
    /* Layout */
    padding-top: var(--activity-feed-padding-top, 4rem);
    padding-bottom: var(--activity-feed-padding-bottom, 4rem);
    margin-top: var(--activity-feed-margin-top, 0);
    margin-bottom: var(--activity-feed-margin-bottom, 0);
    
    /* Background */
    background-color: var(--bg-primary, #ffffff);
    background-image: var(--activity-feed-background-image, none);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

/* Activity Feed Container */
.activity-feed-container {
    max-width: var(--activity-feed-content-width, 1200px);
    margin: 0 auto;
    padding: 0 var(--spacing-md, 1.5rem);
}

/* Grid Layout */
.activity-feed-grid {
    display: flex;
    flex-wrap: nowrap;
    margin: 0 calc(-1 * var(--spacing-md, 1.5rem));
    align-items: center;
    min-height: 500px;
}

.activity-feed-column {
    padding: 0 var(--spacing-md, 1.5rem);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.activity-feed-column.text-column {
    flex: 0 0 50%;
    max-width: 50%;
    min-width: 50%;
}

.activity-feed-column.image-column {
    flex: 0 0 50%;
    max-width: 50%;
    min-width: 50%;
}

/* Text Block Styling */
.activity-feed-text-block {
    padding: 0 var(--activity-feed-text-padding, 2.5rem);
    margin-bottom: var(--spacing-lg, 2rem);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.activity-feed-section-id {
    color: var(--activity-feed-section-id-color, #6366f1);
    font-size: var(--text-sm, 0.875rem);
    font-weight: 600;
    margin-bottom: var(--spacing-sm, 1rem);
    text-transform: uppercase;
    letter-spacing: 1px;
    display: block;
}

.activity-feed-title {
    font-size: var(--activity-feed-title-font-size, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md, 1.5rem);
    color: var(--text-primary, #1f2937);
    line-height: 1.2;
}

.activity-feed-description {
    font-size: var(--activity-feed-description-font-size, 1.125rem);
    line-height: 1.6;
    color: var(--activity-feed-description-color, #6b7280);
    margin-bottom: var(--spacing-lg, 2rem);
}

/* Features List */
.activity-feed-features {
    list-style: none;
    padding: 0;
    margin-bottom: var(--spacing-lg, 2rem);
}

.activity-feed-features li {
    position: relative;
    padding-left: var(--spacing-lg, 2rem);
    margin-bottom: var(--spacing-sm, 1rem);
    color: var(--activity-feed-feature-color, #6b7280);
    line-height: 1.6;
    font-size: var(--activity-feed-feature-font-size, 1rem);
}

.activity-feed-features li:before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--activity-feed-feature-icon-color, #6366f1);
    font-weight: bold;
    font-size: var(--text-lg, 1.125rem);
}

/* Button Styling */
.activity-feed-button {
    display: inline-block;
    padding: var(--spacing-sm, 1rem) var(--spacing-lg, 2rem);
    font-size: var(--text-base, 1rem);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md, 0.5rem);
    transition: all 0.3s ease;
    border: 2px solid var(--activity-feed-button-border-color, #1f2937);
    background: var(--activity-feed-button-bg-color, transparent);
    color: var(--text-primary, #1f2937);
    margin-top: auto;
}

.activity-feed-button:hover {
    background: var(--activity-feed-button-text-color, #1f2937);
    color: var(--activity-feed-background-color, #ffffff);
    transform: translateY(-2px);
    box-shadow: 0 8px 15px -3px rgba(0, 0, 0, 0.2);
    text-decoration: none;
}

/* Image Block */
.activity-feed-image-block {
    padding: 0 var(--activity-feed-image-padding, 2.5rem);
    margin-bottom: var(--spacing-lg, 2rem);
    text-align: center;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.activity-feed-image {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: var(--radius-lg, 1rem);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.activity-feed-image:hover {
    transform: scale(1.02);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .section-activity-feed {
        padding-top: calc(var(--activity-feed-padding-top, 4rem) * 0.85);
        padding-bottom: calc(var(--activity-feed-padding-bottom, 4rem) * 0.85);
    }
    
    .activity-feed-grid {
        flex-wrap: wrap;
        min-height: auto;
    }
    
    .activity-feed-column.text-column,
    .activity-feed-column.image-column {
        flex: 0 0 100%;
        max-width: 100%;
        min-width: 100%;
        margin-bottom: var(--spacing-lg, 2rem);
    }
    
    .activity-feed-title {
        font-size: calc(var(--activity-feed-title-font-size, 2.5rem) * 0.9);
    }
    
    .activity-feed-image {
        max-width: 400px;
    }
}

@media (max-width: 768px) {
    .section-activity-feed {
        padding-top: calc(var(--activity-feed-padding-top, 4rem) * 0.75);
        padding-bottom: calc(var(--activity-feed-padding-bottom, 4rem) * 0.75);
    }
    
    .activity-feed-grid {
        flex-direction: column;
    }
    
    .activity-feed-text-block,
    .activity-feed-image-block {
        padding: 0 var(--spacing-sm, 1rem);
        margin-bottom: var(--spacing-md, 1.5rem);
    }
    
    .activity-feed-title {
        font-size: calc(var(--activity-feed-title-font-size, 2.5rem) * 0.7);
    }
    
    .activity-feed-description {
        font-size: calc(var(--activity-feed-description-font-size, 1.125rem) * 0.9);
    }
    
    .activity-feed-features li {
        font-size: calc(var(--activity-feed-feature-font-size, 1rem) * 0.9);
        margin-bottom: var(--spacing-sm, 1rem);
    }
    
    .activity-feed-image {
        max-width: 350px;
    }
}

@media (max-width: 480px) {
    .section-activity-feed {
        padding-top: calc(var(--activity-feed-padding-top, 4rem) * 0.5);
        padding-bottom: calc(var(--activity-feed-padding-bottom, 4rem) * 0.5);
    }
    
    .activity-feed-title {
        font-size: calc(var(--activity-feed-title-font-size, 2.5rem) * 0.6);
        margin-bottom: var(--spacing-md, 1.5rem);
    }
    
    .activity-feed-section-id {
        font-size: var(--text-xs, 0.75rem);
        margin-bottom: var(--spacing-sm, 1rem);
    }
    
    .activity-feed-button {
        padding: var(--spacing-sm, 1rem) var(--spacing-md, 1.5rem);
        font-size: var(--text-sm, 0.875rem);
    }
    
    .activity-feed-image {
        max-width: 300px;
    }
}

/* Animation Support */
.activity-feed-text-block.animate-fadeIn,
.activity-feed-image-block.animate-fadeIn {
    animation: fadeIn var(--activity-feed-animation-duration, 1200ms) ease-out;
}

.activity-feed-text-block.animate-slideUp,
.activity-feed-image-block.animate-slideUp {
    animation: slideUp var(--activity-feed-animation-duration, 1200ms) ease-out;
}

/* Staggered Animation */
.activity-feed-features li:nth-child(1) { animation-delay: calc(var(--activity-feed-animation-delay, 300ms) + 100ms); }
.activity-feed-features li:nth-child(2) { animation-delay: calc(var(--activity-feed-animation-delay, 300ms) + 200ms); }
.activity-feed-features li:nth-child(3) { animation-delay: calc(var(--activity-feed-animation-delay, 300ms) + 300ms); }
.activity-feed-features li:nth-child(4) { animation-delay: calc(var(--activity-feed-animation-delay, 300ms) + 400ms); }

/* Animation Keyframes */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .activity-feed-button {
        border-width: 3px;
    }
    
    .activity-feed-features li:before {
        color: var(--activity-feed-title-color, #1f2937);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .activity-feed-button {
        transition: none;
    }
    
    .activity-feed-button:hover {
        transform: none;
    }
    
    .activity-feed-image {
        transition: none;
    }
    
    .activity-feed-image:hover {
        transform: none;
    }
    
    .activity-feed-text-block.animate-fadeIn,
    .activity-feed-text-block.animate-slideUp,
    .activity-feed-image-block.animate-fadeIn,
    .activity-feed-image-block.animate-slideUp {
        animation: none;
    }
}

/* Print Styles */
@media print {
    .section-activity-feed {
        background: white !important;
        padding: var(--spacing-md, 1.5rem) 0;
    }
    
    .activity-feed-button {
        border: 1px solid var(--activity-feed-button-border-color, #1f2937);
    }
    
    .activity-feed-image {
        box-shadow: none;
    }
}