/* Research Activities Page Styles */

:root {
    --primary-green: #09552F;
    --primary-light: #0d6b3a;
    --accent-green: #6FCF4D;
    --accent-orange: #F7941D;
    --text-dark: #1a1a1a;
    --text-light: #666;
    --bg-light: #f8faf9;
    --white: #ffffff;
    --shadow-sm: 0 2px 8px rgba(9, 85, 47, 0.08);
    --shadow-md: 0 4px 16px rgba(9, 85, 47, 0.12);
    --shadow-lg: 0 8px 32px rgba(9, 85, 47, 0.16);
}

/* Hero Section */
.activities-header-section {
    position: relative;
    background: linear-gradient(135deg, #09552F 0%, #0d6b3a 50%, #2E7D32 100%);
    padding: 160px 0 100px;
    text-align: center;
    overflow: hidden;
}

.activities-header-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(111, 207, 77, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(247, 148, 29, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.activities-header-section .container {
    position: relative;
    z-index: 1;
}

.activities-header-section h1 {
    font-size: 3.5rem;
    color: var(--white);
    font-weight: 700;
    margin: 0 0 1rem 0;
    letter-spacing: -0.5px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
    animation: fadeInUp 0.8s ease-out;
}

.activities-header-section p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.95);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

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

/* Grid Section */
.activities-grid-section {
    padding: 100px 0 120px;
    background: var(--bg-light);
    position: relative;
}

.activities-grid-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(9, 85, 47, 0.1), transparent);
}

.activities-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 1280px;
    margin: 0 auto;
}

/* Activity Cards */
.activity-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    position: relative;
    border: 1px solid rgba(9, 85, 47, 0.08);
}

.activity-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(9, 85, 47, 0.03) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
    z-index: 1;
}

.activity-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(111, 207, 77, 0.3);
}

.activity-card:hover::before {
    opacity: 1;
}

.activity-image {
    width: 100%;
    height: 240px;
    overflow: hidden;
    position: relative;
}

.activity-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-orange) 0%, var(--accent-green) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.activity-card:hover .activity-image::after {
    transform: scaleX(1);
}

.activity-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
}

.activity-card:hover .activity-image img {
    transform: scale(1.08);
}

.activity-content {
    padding: 32px 28px 36px;
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 2;
}

.activity-content h3 {
    font-size: 1.4rem;
    color: var(--primary-green);
    margin-bottom: 16px;
    font-weight: 700;
    text-align: left;
    line-height: 1.3;
    transition: color 0.3s ease;
}

.activity-card:hover .activity-content h3 {
    color: var(--primary-light);
}

.activity-content p {
    font-size: 0.95rem;
    line-height: 1.75;
    color: var(--text-light);
    margin: 0 0 20px 0;
    text-align: left;
}

.activity-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-green);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.3s ease;
    margin-top: auto;
}

.activity-link:hover {
    color: var(--accent-orange);
    gap: 12px;
}

.activity-link i {
    transition: transform 0.3s ease;
}

.activity-link:hover i {
    transform: translateX(4px);
}


/* Grid layout: 3 cards in first row, 2 cards in second row (centered) */
.activities-grid {
    grid-template-columns: repeat(6, 1fr);
}

.activity-card:nth-child(1),
.activity-card:nth-child(2),
.activity-card:nth-child(3) {
    grid-column: span 2;
}

.activity-card:nth-child(4) {
    grid-column: 2 / span 2;
}

.activity-card:nth-child(5) {
    grid-column: 4 / span 2;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .activities-header-section h1 {
        font-size: 3rem;
    }

    .activities-grid {
        gap: 32px;
    }

    .activity-content {
        padding: 28px 24px 32px;
    }
}

@media (max-width: 992px) {
    .activities-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 30px;
    }
    
    .activity-card:nth-child(1),
    .activity-card:nth-child(2),
    .activity-card:nth-child(3),
    .activity-card:nth-child(4),
    .activity-card:nth-child(5) {
        grid-column: span 1 !important;
    }

    .activities-header-section {
        padding: 140px 0 80px;
    }

    .activities-header-section h1 {
        font-size: 2.8rem;
    }

    .activities-header-section p {
        font-size: 1.1rem;
    }

    .activities-grid-section {
        padding: 80px 0 100px;
    }
}

@media (max-width: 768px) {
    .activities-grid {
        grid-template-columns: 1fr !important;
        gap: 24px;
    }
    
    .activity-card:nth-child(1),
    .activity-card:nth-child(2),
    .activity-card:nth-child(3),
    .activity-card:nth-child(4),
    .activity-card:nth-child(5) {
        grid-column: span 1 !important;
    }

    .activities-header-section {
        padding: 120px 0 60px;
    }

    .activities-header-section h1 {
        font-size: 2.2rem;
        letter-spacing: -0.3px;
    }

    .activities-header-section p {
        font-size: 1rem;
    }

    .activities-grid-section {
        padding: 60px 0 80px;
    }

    .activity-image {
        height: 220px;
    }

    .activity-content {
        padding: 24px 20px 28px;
    }

    .activity-content h3 {
        font-size: 1.25rem;
    }

    .activity-content p {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .activities-header-section {
        padding: 100px 0 50px;
    }

    .activities-header-section h1 {
        font-size: 1.8rem;
    }

    .activities-header-section p {
        font-size: 0.95rem;
        line-height: 1.6;
    }

    .activity-image {
        height: 200px;
    }

    .activity-content {
        padding: 20px 18px 24px;
    }

    .activity-content h3 {
        font-size: 1.15rem;
    }

    .activity-content p {
        font-size: 0.88rem;
        line-height: 1.7;
    }

    .activities-grid {
        gap: 20px;
    }
}