:root {
    --rsb-primary: #ff5722; /* Orange color from screenshot */
    --rsb-primary-dark: #e64a19;
    --rsb-text: #333333;
    --rsb-bg: #ffffff;
    --rsb-border: #000000;
    --rsb-shadow: none;
}

.wp-rsb-booking-container {
    max-width: 900px;
    margin: 40px auto;
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--rsb-text);
}

.rsb-form-card {
    background: var(--rsb-bg);
    padding: 20px;
    border-radius: 0;
}

.rsb-form-header {
    text-align: center;
    margin-bottom: 40px;
}

.rsb-form-header h2 {
    margin: 0;
    font-size: 32px;
    font-weight: 800;
    letter-spacing: 1px;
    color: #222;
}

.rsb-form-header p {
    color: #aaa;
    font-size: 16px;
    margin-top: 10px;
}

.rsb-form-group {
    margin-bottom: 20px;
}

.rsb-form-group.full-width {
    width: 100%;
}

.rsb-form-group input, 
.rsb-form-group select,
.rsb-form-group textarea {
    width: 100%;
    padding: 15px 20px;
    border: 1px solid var(--rsb-border);
    border-radius: 0;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #fff;
    box-sizing: border-box;
}

.rsb-form-group input::placeholder,
.rsb-form-group textarea::placeholder {
    color: #333;
}

.rsb-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.rsb-submit-container {
    display: flex;
    justify-content: center;
    margin-top: 10px;
}

.rsb-submit-btn {
    width: auto;
    min-width: 200px;
    padding: 18px 40px;
    background: var(--rsb-primary);
    color: white;
    border: none;
    border-radius: 0;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.rsb-submit-btn:hover {
    background: var(--rsb-primary-dark);
    transform: translateY(-2px);
}

.rsb-submit-btn:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
}

.rsb-loader {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top: 3px solid #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.rsb-message {
    margin-top: 20px;
    padding: 15px;
    text-align: center;
    display: none;
}

.rsb-message.success {
    background: #d4edda;
    color: #155724;
    display: block;
}

.rsb-message.error {
    background: #f8d7da;
    color: #721c24;
    display: block;
}

@media (max-width: 480px) {
    .rsb-form-row {
        grid-template-columns: 1fr;
    }
}