/**
 * Stats Cards for Teacher Dashboard
 * Colorful gradient cards with animations
 */

.se-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.se-stat-card {
    background: white;
    border-radius: 20px;
    padding: 28px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.se-stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
}

.se-stat-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.3);
}

.se-stat-icon {
    font-size: 3rem;
    margin-bottom: 12px;
    display: inline-block;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.se-stat-value {
    font-size: 2.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    line-height: 1;
}

.se-stat-label {
    font-size: 1rem;
    font-weight: 600;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Individual card color variations */
.se-stat-card:nth-child(1) .se-stat-value {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.se-stat-card:nth-child(2) .se-stat-value {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.se-stat-card:nth-child(3) .se-stat-value {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.se-stat-card:nth-child(1)::before {
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
}

.se-stat-card:nth-child(2)::before {
    background: linear-gradient(90deg, #f093fb 0%, #f5576c 100%);
}

.se-stat-card:nth-child(3)::before {
    background: linear-gradient(90deg, #4facfe 0%, #00f2fe 100%);
}

/* Responsive design */
@media (max-width: 768px) {
    .se-stats-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .se-stat-card {
        padding: 20px;
    }
    
    .se-stat-icon {
        font-size: 2.5rem;
    }
    
    .se-stat-value {
        font-size: 2rem;
    }
}