.news-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
    cursor: pointer;
}

.news-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.category-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.category-tech { background: #dbeafe; color: #1e40af; }
.category-promo { background: #fef3c7; color: #d97706; }
.category-service { background: #d1fae5; color: #065f46; }
.category-tips { background: #fce7f3; color: #be185d; }

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

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

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }

@media (max-width: 768px) {
    .news-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .hero-title {
        font-size: 2.1rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 1.7rem;
    }
}

.filter-btn {
    font-size: 14px;
    transition: all 0.3s ease;
    border: 1px solid #e5e7eb;
}

.filter-btn.active {
    background-color: #2563eb !important;
    color: white !important;
    border-color: #2563eb !important;
}

.filter-btn:not(.active):hover {
    background-color: #f9fafb;
    border-color: #d1d5db;
}

.news-card.hidden {
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.3s ease;
}

.news-card.visible {
    opacity: 1;
    transform: scale(1);
    transition: all 0.3s ease;
}

.gradient-blue { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.gradient-green { background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }
.gradient-purple { background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%); }
.gradient-orange { background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%); }

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    animation: slideIn 0.3s ease;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: #f3f4f6;
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    color: #6b7280;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: #e5e7eb;
    color: #374151;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { 
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to { 
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}