:root {
    --primary: #1a365d;
    --secondary: #2c5282;
    --accent: #4299e1;
    --dark: #1a202c;
    --light: #f7fafc;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: #f8fafc;
}

.announcement-card {
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    perspective: 1000px;
    transform-style: preserve-3d;
    position: relative;
    overflow: hidden;
    border-radius: 16px;
}

.announcement-card:hover {
    transform: translateY(-8px) rotateX(3deg);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.announcement-image {
    transition: all 0.6s ease;
    transform-origin: center center;
}

.announcement-card:hover .announcement-image {
    transform: scale(1.1);
}

.announcement-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, #f59e0b, #ef4444);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    z-index: 2;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.announcement-date {
    position: absolute;
    bottom: 15px;
    left: 15px;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 12px;
    z-index: 2;
    display: flex;
    align-items: center;
}

.pagination {
    display: flex;
    gap: 5px;
}

.page-item {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.page-item:hover {
    background-color: var(--primary);
    color: white;
}

.page-item.active {
    background-color: var(--primary);
    color: white;
}

.section-title {
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 2px;
}

.search-box {
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.search-box:focus {
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.5);
}

.filter-chip {
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.filter-chip:hover, .filter-chip.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
}

@keyframes floatIn {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}

.animate-float-in {
    animation: floatIn 0.6s ease-out forwards;
}
.gradient-header {
background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
}