/* Premium, modern styling */
.cbs-container {
    max-width: 800px;
    margin: 0 auto;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    padding: 2rem;
    color: #333;
}

.cbs-calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.cbs-calendar-header h3 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
    color: #1a1a1a;
}

.cbs-nav-btn {
    background: #f0f0f0;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #555;
}

.cbs-nav-btn:hover {
    background: #e0e0e0;
    color: #000;
}

.cbs-slots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.cbs-slot-btn {
    background: #ffffff;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    padding: 0.75rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    color: #4a5568;
}

.cbs-slot-btn:hover {
    border-color: #4299e1;
    color: #2b6cb0;
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(66, 153, 225, 0.1);
}

.cbs-slot-btn.selected {
    background: #4299e1;
    color: #ffffff;
    border-color: #4299e1;
    box-shadow: 0 4px 12px rgba(66, 153, 225, 0.3);
}

/* Form Styles */
#cbs-booking-form-wrapper {
    background: #f8fafc;
    border-radius: 8px;
    padding: 2rem;
    margin-top: 2rem;
    border: 1px solid #e2e8f0;
}

#cbs-booking-form-wrapper h3 {
    margin-top: 0;
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
    color: #2d3748;
}

.cbs-form-group {
    margin-bottom: 1.25rem;
}

.cbs-form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #4a5568;
}

.cbs-form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #cbd5e0;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s ease;
    box-sizing: border-box;
}

.cbs-form-group input:focus {
    outline: none;
    border-color: #4299e1;
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2);
}

.cbs-btn {
    background: #4299e1;
    color: #ffffff;
    border: none;
    border-radius: 6px;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: background 0.2s ease;
}

.cbs-btn:hover {
    background: #3182ce;
}

.cbs-btn:disabled {
    background: #a0aec0;
    cursor: not-allowed;
}

#cbs-form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 6px;
    display: none;
}

#cbs-form-message.success {
    display: block;
    background: #c6f6d5;
    color: #22543d;
    border: 1px solid #9ae6b4;
}

#cbs-form-message.error {
    display: block;
    background: #fed7d7;
    color: #742a2a;
    border: 1px solid #feb2b2;
}

.cbs-no-slots {
    grid-column: 1 / -1;
    text-align: center;
    color: #718096;
    padding: 2rem;
    background: #f7fafc;
    border-radius: 8px;
}