:root {
    --is-primary-color: #020036;
    --is-primary-dark: #010013;
    --is-secondary-color: #00E8AC;
    --is-warning-color: #ecbe40;
    --is-error-color: #E50043;
    --is-background: #ffffff;
    --is-light-gray: #f9fafb;
    --is-border-color: #e5e7eb;
    --is-text-color: #020036;
    --is-text-muted: #6b7280;
    --is-shadow: 0 1px 3px rgba(2, 0, 54, 0.1);
    --is-shadow-hover: 0 4px 6px rgba(2, 0, 54, 0.12);
    --is-shadow-lg: 0 10px 15px rgba(2, 0, 54, 0.15);
    --is-border-radius: 8px;
    --is-transition: all 0.2s ease-in-out;
}

.installation-service-option {
    margin: 20px 0;
    padding: 0;
    clear: both;
    font-family: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.installation-service-wrapper {
    background: var(--is-background);
    border-radius: var(--is-border-radius);
}

.installation-checkbox-label {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    margin: 0;
    padding: 16px 20px;
    background: var(--is-light-gray);
    border: 1px solid var(--is-border-color);
    border-radius: var(--is-border-radius);
    transition: var(--is-transition);
    color: var(--is-text-color);
}

.installation-checkbox-label:hover {
    background: #f0f3ff;
    border-color: var(--is-primary-color);
}

.installation-checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin: 0;
    accent-color: var(--is-primary-color);
    cursor: pointer;
    border-radius: 4px;
}

.installation-text {
    color: inherit;
    font-weight: 600;
    transition: var(--is-transition);
}

.installation-wizard {
    position: relative;
    min-height: 500px;
    margin-top: 24px;
    padding-top: 24px;
}

.wizard-steps-container {
    position: relative;
    min-height: 400px;
}

.wizard-progress {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 32px;
    gap: 0;
    padding: 0 20px;
}

.progress-step {
    width: 48px;
    height: 48px;
    min-width: 48px;
    min-height: 48px;
    border-radius: 50%;
    background: var(--is-background);
    border: 2px solid var(--is-border-color);
    color: var(--is-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
    transition: var(--is-transition);
    position: relative;
    z-index: 2;
    flex-shrink: 0;
}

.progress-step.active {
    background: var(--is-primary-color);
    border-color: var(--is-primary-color);
    color: white;
    transform: scale(1.1);
    box-shadow: 0 0 0 4px rgba(2, 0, 54, 0.1);
}

.progress-step.completed {
    background: var(--is-secondary-color);
    border-color: var(--is-secondary-color);
    color: var(--is-primary-color);
}

.progress-step.completed::after {
    content: '✓';
    position: absolute;
    font-size: 24px;
    font-weight: 900;
    color: var(--is-primary-color);
}

.progress-step.completed span {
    display: none;
}

.progress-line {
    width: 60px;
    height: 2px;
    background: var(--is-border-color);
    position: relative;
    z-index: 1;
    margin: 0 -5px;
}

.progress-line.completed {
    background: var(--is-secondary-color);
}

.wizard-step {
    display: none;
    opacity: 0;
    min-height: 320px;
    background: var(--is-background);
    border: none !important;
    outline: none !important;
}

.wizard-step.active {
    display: block !important;
    position: relative;
    opacity: 1;
    pointer-events: auto;
    z-index: 2;
    animation: fadeInStep 0.3s ease;
}

.wizard-step.transitioning {
    display: block !important;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 1;
    pointer-events: none;
    z-index: 1;
    animation: fadeOutStep 0.3s ease forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(0);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInStep {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeOutStep {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

.wizard-step h4 {
    margin: 0 0 24px 0;
    color: var(--is-text-color);
    font-size: 24px;
    font-weight: 700;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--is-primary-color);
}

.question-content {
    margin-bottom: 32px;
}

.question-content > p {
    margin: 0 0 24px 0;
    color: var(--is-text-muted);
    font-size: 16px;
    line-height: 1.6;
}

.radio-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.radio-options label {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 18px 20px;
    background: var(--is-background);
    border: 1px solid var(--is-border-color);
    border-radius: var(--is-border-radius);
    cursor: pointer;
    transition: var(--is-transition);
    margin: 0;
    position: relative;
}

.radio-options label:hover {
    background: #fafbff;
    border-color: var(--is-primary-color);
    transform: translateY(-1px);
    box-shadow: var(--is-shadow);
}

.radio-options input[type="radio"] {
    width: 20px;
    height: 20px;
    min-width: 20px;
    margin: 0;
    accent-color: var(--is-primary-color);
    flex-shrink: 0;
    margin-top: 2px;
}

.radio-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.radio-content span {
    font-weight: 600;
    color: var(--is-text-color);
    font-size: 15px;
    line-height: 1.4;
}

.radio-content small {
    color: var(--is-text-muted);
    font-size: 13px;
    line-height: 1.4;
    font-style: normal;
    font-weight: normal;
}

.radio-options label:has(input:checked) {
    background: #fafbff;
    border-color: var(--is-primary-color);
    box-shadow: 0 0 0 3px rgba(2, 0, 54, 0.05);
}

.radio-options label:has(input:checked)::after {
    content: '✓';
    position: absolute;
    top: 18px;
    right: 20px;
    color: var(--is-secondary-color);
    font-weight: 900;
    font-size: 18px;
}

.custom-quote-notice,
.carry-help-notice,
.mount-compatibility-notice {
    margin: 20px 0;
    padding: 20px;
    background: linear-gradient(135deg, #fffbf5, #fff8ed);
    border: 1px solid var(--is-warning-color);
    border-left: 4px solid var(--is-warning-color);
    border-radius: var(--is-border-radius);
    animation: slideDown 0.3s ease;
    position: relative;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.notice-content h5 {
    margin: 0 0 12px 0;
    color: var(--is-text-color);
    font-size: 18px;
    font-weight: 700;
}

.notice-content h5::before {
    content: '!';
    display: inline-block;
    width: 24px;
    height: 24px;
    background: var(--is-warning-color);
    color: white;
    text-align: center;
    line-height: 24px;
    border-radius: 50%;
    margin-right: 10px;
    font-size: 14px;
}

.notice-content p {
    margin: 0 0 20px 0;
    color: var(--is-text-color);
    line-height: 1.6;
    font-size: 15px;
}

.notice-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.contact-button {
    display: inline-flex;
    align-items: center;
    background: var(--is-primary-color);
    color: white;
    padding: 12px 20px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: var(--is-transition);
    gap: 8px;
}

.contact-button:hover {
    background: var(--is-primary-dark);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--is-shadow-hover);
    text-decoration: none;
}

.contact-button.secondary {
    background: transparent;
    border: 2px solid var(--is-primary-color);
    color: var(--is-primary-color);
}

.contact-button.secondary:hover {
    background: var(--is-primary-color);
    color: white;
}

.wizard-navigation {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--is-border-color);
    gap: 16px;
}

.wizard-navigation .wizard-back-btn {
    margin-right: auto;
}

.wizard-back-btn,
.wizard-next-btn,
.wizard-complete-btn {
    background: var(--is-primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    transition: var(--is-transition);
    min-width: 120px;
}

.wizard-back-btn {
    background: transparent;
    border: 1px solid var(--is-border-color);
    color: var(--is-text-muted);
}

.wizard-back-btn:hover {
    background: var(--is-light-gray);
    border-color: var(--is-primary-color);
    color: var(--is-primary-color);
}

.wizard-next-btn:hover,
.wizard-complete-btn:hover {
    background: var(--is-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--is-shadow);
}

.wizard-next-btn:disabled,
.wizard-complete-btn:disabled {
    background: #d1d5db;
    color: #9ca3af;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.wizard-next-btn:disabled:hover,
.wizard-complete-btn:disabled:hover {
    background: #d1d5db !important;
    color: #9ca3af !important;
    cursor: not-allowed;
}

.wizard-complete-btn {
    background: var(--is-secondary-color);
    color: var(--is-primary-color);
    font-weight: 700;
    min-width: 200px;
}

.wizard-complete-btn:hover {
    background: #00BE8E;
}

.selected-options-summary {
    background: var(--is-light-gray);
    padding: 20px;
    border-radius: var(--is-border-radius);
    margin-bottom: 24px;
    border: 1px solid var(--is-border-color);
}

.selected-options-summary h5 {
    margin: 0 0 16px 0;
    color: var(--is-text-color);
    font-weight: 700;
    font-size: 16px;
}

.selected-options-summary ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.selected-options-summary li {
    padding: 10px 0;
    color: var(--is-text-color);
    border-bottom: 1px solid var(--is-border-color);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
}

.selected-options-summary li:last-child {
    border-bottom: none;
}

.summary-check {
    color: var(--is-secondary-color);
    font-weight: 900;
    font-size: 16px;
    width: 20px;
    text-align: center;
}

.postcode-calculator {
    background: var(--is-light-gray);
    padding: 24px;
    border-radius: var(--is-border-radius);
    margin: 24px 0;
    border: 1px solid var(--is-border-color);
}

.postcode-calculator label {
    display: block;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--is-text-color);
    font-size: 15px;
}

.postcode-input-group {
    display: flex;
    gap: 12px;
    align-items: stretch;
}

.postcode-input-group input[type="text"] {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid var(--is-border-color);
    border-radius: 6px;
    text-transform: uppercase;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    letter-spacing: 1px;
    transition: var(--is-transition);
    background: white;
}

.postcode-input-group input[type="text"]:focus {
    border-color: var(--is-primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(2, 0, 54, 0.05);
}

.postcode-input-group .calculate-btn {
    background: var(--is-primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    transition: var(--is-transition);
    white-space: nowrap;
}

.postcode-input-group .calculate-btn:hover {
    background: var(--is-primary-dark);
    transform: translateY(-1px);
}

.postcode-input-group .calculate-btn:disabled {
    background: #d1d5db;
    color: #9ca3af;
    cursor: not-allowed;
    transform: none;
}

#calculation_result {
    margin-top: 16px;
    font-size: 14px;
}

.calculation-error {
    color: var(--is-error-color);
    background: #fff5f5;
    border: 1px solid #ffcdd2;
    padding: 12px 16px;
    border-radius: 6px;
    margin: 0;
    font-weight: 500;
}

.installation-final-total {
    background: linear-gradient(135deg, var(--is-primary-color), var(--is-primary-dark));
    color: white;
    padding: 28px;
    border-radius: 12px;
    margin: 24px 0;
    text-align: center;
    box-shadow: var(--is-shadow-lg);
    animation: slideUpFade 0.4s ease;
}

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

.installation-final-total h3 {
    margin: 0 0 16px 0;
    font-size: 18px;
    font-weight: 600;
    opacity: 0.95;
}

.final-price-display {
    font-size: 32px;
    font-weight: 900;
    margin: 16px 0;
}

.price-breakdown {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.breakdown-details {
    text-align: left;
    max-width: 400px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.1);
    padding: 16px;
    border-radius: 8px;
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    font-size: 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.breakdown-item:last-child {
    border-bottom: none;
}

.breakdown-item span:first-child {
    flex: 1;
}

.breakdown-item span:last-child {
    font-weight: 600;
    margin-left: 15px;
}

.installation-wizard.completed {
    opacity: 1;
    pointer-events: none;
    position: relative;
}

.installation-service-wrapper.loading {
    opacity: 0.7;
    pointer-events: none;
    position: relative;
}

.installation-service-wrapper.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 32px;
    height: 32px;
    border: 3px solid var(--is-border-color);
    border-top-color: var(--is-primary-color);
    border-radius: 50%;
    animation: spinner 1s linear infinite;
}

@keyframes spinner {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

.step-error-message {
    margin: 16px 0;
}

.step-error-message p {
    margin: 0;
    padding: 12px 16px;
    background: #fff5f5;
    border: 1px solid #ffcdd2;
    border-left: 3px solid var(--is-error-color);
    border-radius: 6px;
    color: var(--is-error-color);
    font-weight: 500;
    font-size: 14px;
}

@media (max-width: 768px) {
    .installation-service-wrapper {
        padding: 16px;
        margin: 16px 0;
    }

    .wizard-progress {
        gap: 0;
        padding: 0 10px;
    }

    .progress-step {
        width: 40px;
        height: 40px;
        min-width: 40px;
        min-height: 40px;
        font-size: 14px;
    }

    .progress-line {
        width: 40px;
        margin: 0 -3px;
    }

    .wizard-step {
        min-height: auto;
        padding: 0;
    }

    .wizard-step h4 {
        font-size: 20px;
        margin-bottom: 16px;
    }

    .radio-options label {
        padding: 14px 16px;
    }

    .wizard-navigation {
        flex-direction: column;
        gap: 12px;
        padding-top: 20px;
    }

    .wizard-navigation .wizard-back-btn {
        margin-right: 0;
        order: 2;
    }

    .wizard-next-btn,
    .wizard-complete-btn {
        order: 1;
    }

    .wizard-back-btn,
    .wizard-next-btn,
    .wizard-complete-btn {
        width: 100%;
        padding: 14px 20px;
        min-width: auto;
    }

    .postcode-input-group {
        flex-direction: column;
        gap: 12px;
    }

    .postcode-input-group input[type="text"] {
        width: 100%;
    }

    .postcode-input-group .calculate-btn {
        width: 100%;
        padding: 14px 20px;
    }

    .final-price-display {
        font-size: 28px;
    }

    .installation-final-total {
        padding: 24px 16px;
    }

    .notice-actions {
        flex-direction: column;
        gap: 10px;
    }

    .contact-button {
        text-align: center;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .installation-service-wrapper {
        padding: 12px;
        margin: 12px 0;
    }

    .progress-step {
        width: 36px;
        height: 36px;
        min-width: 36px;
        min-height: 36px;
        font-size: 12px;
    }

    .progress-line {
        width: 30px;
    }

    .wizard-step h4 {
        font-size: 18px;
    }

    .final-price-display {
        font-size: 24px;
    }

    .installation-final-total {
        padding: 20px 12px;
    }
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

.installation-already-added {
    margin: 20px 0;
}

.installation-already-added strong {
    font-weight: 600;
    color: var(--is-text-color);
}

.installation-already-added p {
    margin: 0;
    color: var(--is-text-color);
    line-height: 1.5;
}

.installation-already-added .btn {
    display: inline-block;
    text-decoration: none;
}

.installation-notice {
    display: flex;
    gap: 15px;
    padding: 20px;
    background: #f0f3ff;
    border: 1px solid #c5d0ff;
    border-radius: var(--is-border-radius);
    align-items: flex-start;
}

.installation-notice .notice-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: var(--is-primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: bold;
}

.installation-notice .notice-content {
    flex: 1;
}

.installation-notice strong {
    display: block;
    margin-bottom: 8px;
    color: var(--is-primary-color);
    font-size: 16px;
    font-weight: 600;
}

.installation-notice p {
    margin: 0 0 15px 0;
    color: var(--is-text-muted);
    font-size: 14px;
    line-height: 1.5;
}

.installation-notice .view-cart-btn {
    display: inline-block;
    padding: 10px 20px;
    background: var(--is-primary-color);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    transition: var(--is-transition);
}

.installation-notice .view-cart-btn:hover {
    background: var(--is-primary-dark);
    color: white;
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--is-shadow);
}

.remove-installation-checkout:hover i {
    color: var(--is-error-color) !important;
}

@media (max-width: 768px) {
    .installation-notice {
        flex-direction: column;
        gap: 12px;
    }

    .installation-notice .notice-icon {
        align-self: center;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@media print {
    .installation-service-option {
        display: none;
    }
}

@media (prefers-contrast: high) {
    :root {
        --is-border-color: #000;
        --is-text-color: #000;
        --is-text-muted: #333;
    }

    .radio-options label,
    .wizard-back-btn,
    .wizard-next-btn,
    .wizard-complete-btn {
        border-width: 2px;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}