/* Tibber Selection UI Styles */
* {
    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;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #333;
}

.container {
    max-width: 800px;
    width: 90%;
    text-align: center;
}

header {
    margin-bottom: 50px;
    color: white;
}

header h1 {
    font-size: 3rem;
    font-weight: 300;
    margin-bottom: 10px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

header p {
    font-size: 1.2rem;
    opacity: 0.9;
    font-weight: 300;
}

.selection-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.option-card {
    background: white;
    border-radius: 15px;
    padding: 40px 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.option-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.option-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.option-card:hover::before {
    transform: scaleX(1);
}

.icon {
    margin-bottom: 20px;
    color: #667eea;
}

.icon svg {
    transition: transform 0.3s ease;
}

.option-card:hover .icon svg {
    transform: scale(1.1);
}

.option-card h2 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: #333;
    font-weight: 600;
}

.option-card p {
    font-size: 1rem;
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
}

.arrow {
    font-size: 1.5rem;
    color: #667eea;
    opacity: 0;
    transition: all 0.3s ease;
    transform: translateX(-10px);
}

.option-card:hover .arrow {
    opacity: 1;
    transform: translateX(0);
}

footer {
    color: white;
    opacity: 0.7;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 2.5rem;
    }
    
    .selection-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .option-card {
        padding: 30px 20px;
    }
    
    .option-card h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 2rem;
    }
    
    .option-card {
        padding: 25px 15px;
    }
}

/* Loading animation */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

.loading .option-card {
    transform: scale(0.95);
}

/* Accessibility */
.option-card:focus {
    outline: 3px solid rgba(255, 255, 255, 0.8);
    outline-offset: 4px;
}

@media (prefers-reduced-motion: reduce) {
    .option-card,
    .icon svg,
    .arrow {
        transition: none;
    }
    
    .option-card:hover {
        transform: none;
    }
}