* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

h1 {
    text-align: center;
    color: white;
    margin-bottom: 30px;
    font-size: 2.5em;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.filters {
    background: white;
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.filter-section {
    margin-bottom: 20px;
}

.filter-section:last-child {
    margin-bottom: 0;
}

.filter-section h3 {
    color: #333;
    margin-bottom: 15px;
    font-size: 1.2em;
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.filter-btn {
    padding: 10px 20px;
    border: 2px solid #667eea;
    background: white;
    color: #667eea;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 600;
    transition: all 0.3s ease;
}

.filter-btn:hover {
    background: #f0f0f0;
    transform: translateY(-2px);
}

.filter-btn.active {
    background: #667eea;
    color: white;
    box-shadow: 0 4px 10px rgba(102, 126, 234, 0.4);
}

.robots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.robot-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    animation: fadeIn 0.5s ease;
}

.robot-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

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

.robot-icon {
    font-size: 4em;
    margin-bottom: 15px;
}

.robot-card h3 {
    color: #333;
    margin-bottom: 15px;
    font-size: 1.3em;
}

.robot-info {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.badge {
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.85em;
    font-weight: 600;
    color: white;
}

.badge-terrestre {
    background: #8b4513;
}

.badge-marin {
    background: #1e90ff;
}

.badge-aerien {
    background: #87ceeb;
}

.badge-game {
    background: #ff6b6b;
}

.loading, .error, .no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px;
    background: white;
    border-radius: 15px;
    color: #666;
    font-size: 1.2em;
}

.error {
    color: #ff6b6b;
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 1.8em;
    }
    
    .filter-buttons {
        flex-direction: column;
    }
    
    .filter-btn {
        width: 100%;
    }
    
    .robots-grid {
        grid-template-columns: 1fr;
    }
}