/* =========================
   Veranda Calculator Styles
   ========================= */

/* CSS Variables */
:root {
    --color-primary: #40C057;
    --color-primary-dark: #37A047;
    --color-dark-bg: #2C3540;
    --color-white: #FFFFFF;
    --color-gray-text: #6B7280;
    --color-gray-light: #E5E7EB;
    --color-gray-border: #D1D5DB;
    --color-success: #10B981;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --border-radius: 8px;
    --transition-speed: 300ms;
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: #1F2937;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Layout */
.calculator-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.calculator-header {
    background: var(--color-white);
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-title {
    font-size: 20px;
    font-weight: 600;
}

.viewer-overlay-controls {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 10;
    pointer-events: none;
    isolation: isolate; /* stacking context so overlay stays above iframe on desktop */
}

.viewer-overlay-controls .day-night-toggle {
    position: absolute;
    right: 16px;
    bottom: 16px;
    pointer-events: auto;
    opacity: 0.6;
    transition: opacity var(--transition-speed);
}

.viewer-overlay-controls .day-night-toggle:hover {
    opacity: 1;
}

.preview-titlebar {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 40px;
    display: none;
    align-items: center;
    justify-content: space-between;
    padding: 0 12px;
    background: rgba(44, 53, 64, 0.95);
    color: var(--color-white);
    font-size: 14px;
    font-weight: 600;
    z-index: 11;
    pointer-events: auto;
}

.preview-title {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.preview-close {
    background: none;
    border: none;
    color: #9CA3AF;
    font-size: 18px;
    cursor: pointer;
    line-height: 1;
    padding: 4px 6px;
}

.preview-close:hover {
    color: var(--color-white);
}

.day-night-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 6px 10px;
    background: #F3F4F6;
    border: 1px solid var(--color-gray-border);
    border-radius: 999px;
}

.camera-controls {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    pointer-events: none;
}

.camera-btn {
    width: 32px;
    height: 32px;
    border: 1px solid var(--color-gray-border);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.9);
    color: #111827;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition-speed), border-color var(--transition-speed);
    pointer-events: auto;
    position: absolute;
    opacity: 0.6;
    background: rgba(255, 255, 255, 0.9);
    display: none;
}

.camera-btn:hover {
    background: var(--color-white);
    border-color: var(--color-primary);
    opacity: 1;
}

.camera-btn[data-camera-action="top"] {
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
}

.camera-btn[data-camera-action="left"] {
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
}

.camera-btn[data-camera-action="right"] {
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
}

.camera-btn[data-camera-action="down"] {
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
}

.camera-controls[data-view-state="default"] .camera-btn[data-camera-action="left"],
.camera-controls[data-view-state="default"] .camera-btn[data-camera-action="right"],
.camera-controls[data-view-state="default"] .camera-btn[data-camera-action="top"] {
    display: block;
}

.camera-controls[data-view-state="left"] .camera-btn[data-camera-action="right"],
.camera-controls[data-view-state="left"] .camera-btn[data-camera-action="top"] {
    display: block;
}

.camera-controls[data-view-state="right"] .camera-btn[data-camera-action="left"],
.camera-controls[data-view-state="right"] .camera-btn[data-camera-action="top"] {
    display: block;
}

.camera-controls[data-view-state="top"] .camera-btn[data-camera-action="left"],
.camera-controls[data-view-state="top"] .camera-btn[data-camera-action="right"],
.camera-controls[data-view-state="top"] .camera-btn[data-camera-action="down"] {
    display: block;
}

.toggle-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-gray-text);
    letter-spacing: 0.3px;
}

.toggle-label.active {
    color: #111827;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 46px;
    height: 24px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-gray-border);
    border-radius: 999px;
    transition: background var(--transition-speed);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    top: 3px;
    background: var(--color-white);
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: transform var(--transition-speed);
}

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(22px);
}

.day-night-toggle.is-day .toggle-slider {
    background: var(--color-primary);
}

.day-night-toggle.is-night .toggle-slider {
    background: var(--color-gray-border);
}

.header-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--color-gray-text);
    cursor: pointer;
    padding: 4px 8px;
}

.calculator-main {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* 3D Viewer */
.viewer-container {
    flex: 1;
    background: #F3F4F6;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.viewer-placeholder {
    text-align: center;
    color: var(--color-gray-text);
}

/* Verge3D iframe styling - z-index below overlay so desktop overlay controls receive clicks */
.viewer-container iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
    position: relative;
    z-index: 0;
}

/* Viewer controls removed - handled by Unity/Verge3D viewer */

/* Form Panel */
.form-panel {
    flex: 1;
    background: var(--color-white);
    display: flex;
    flex-direction: row;
    overflow: hidden;
}

/* Step Navigation */
.step-nav {
    width: 280px;
    flex-shrink: 0;
    padding: var(--spacing-lg);
    border-left: 1px solid var(--color-gray-light);
    overflow-y: auto;
    background: #FAFAFA;
}

.step-nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background var(--transition-speed);
}

.step-nav-item:hover {
    background: #F9FAFB;
}

.step-nav-item.active {
    background: var(--color-primary);
    color: var(--color-white);
}

.step-nav-item.completed {
    background: var(--color-gray-light);
}

.step-nav-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-gray-light);
    color: #374151;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
}

.step-nav-item.active .step-nav-number {
    background: var(--color-white);
    color: var(--color-primary);
}

.step-nav-item.completed .step-nav-number {
    background: #9CA3AF;
    color: var(--color-white);
}

.step-nav-label {
    font-size: 14px;
    font-weight: 500;
}

/* Steps Container */
.steps-container {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-xl);
}

.step {
    display: none;
    animation: fadeIn var(--transition-speed);
}

.step.active {
    display: block;
}

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

.step-header {
    margin-bottom: var(--spacing-lg);
}

.step-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.step-description {
    color: var(--color-gray-text);
    font-size: 15px;
}

.step-content {
    margin-bottom: var(--spacing-xl);
}

/* Form Elements */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: #374151;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-gray-border);
    border-radius: var(--border-radius);
    font-size: 15px;
    transition: border-color var(--transition-speed);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-hint {
    font-size: 13px;
    color: var(--color-gray-text);
    margin-top: var(--spacing-xs);
}

/* Radio Card Options */
.radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.radio-card {
    border: 2px solid var(--color-gray-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.radio-card:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.radio-card.selected {
    border-color: var(--color-primary);
    background: #F0FDF4;
}

.radio-circle {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-gray-border);
    border-radius: 50%;
    position: relative;
    flex-shrink: 0;
}

.radio-card.selected .radio-circle {
    border-color: var(--color-primary);
}

.radio-card.selected .radio-circle::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background: var(--color-primary);
    border-radius: 50%;
}

.radio-label {
    flex: 1;
    font-weight: 500;
}

.radio-badge {
    background: var(--color-primary);
    color: var(--color-white);
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.info-icon {
    width: 20px;
    height: 20px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    flex-shrink: 0;
}

/* Checkboxes */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.checkbox-card {
    border: 2px solid var(--color-gray-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.checkbox-card:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.checkbox-card.checked {
    border-color: var(--color-primary);
    background: #F0FDF4;
}

.checkbox-box {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-gray-border);
    border-radius: 4px;
    position: relative;
    flex-shrink: 0;
}

.checkbox-card.checked .checkbox-box {
    border-color: var(--color-primary);
    background: var(--color-primary);
}

.checkbox-card.checked .checkbox-box::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-white);
    font-size: 14px;
    font-weight: 600;
}

.checkbox-label {
    flex: 1;
}

.checkbox-sublabel {
    font-size: 13px;
    color: var(--color-gray-text);
}

.front-type-hint {
    margin-top: var(--spacing-sm);
    font-size: 13px;
}

.front-type-options {
    margin-top: var(--spacing-sm);
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.front-type-options--disabled {
    opacity: 0.55;
}

/* Buttons */
.step-actions {
    display: flex;
    gap: var(--spacing-md);
}

.btn {
    padding: 14px 32px;
    border-radius: var(--border-radius);
    font-size: 15px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition-speed);
    flex: 1;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(64, 192, 87, 0.3);
}

.btn-secondary {
    background: var(--color-gray-light);
    color: #374151;
}

.btn-secondary:hover:not(:disabled) {
    background: #D1D5DB;
}

/* Footer */
.calculator-footer {
    background: var(--color-dark-bg);
    padding: var(--spacing-lg);
    color: var(--color-white);
}

.price-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.price-label {
    font-size: 16px;
}

.price-amount {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-primary);
}

.price-note {
    font-size: 13px;
    color: #9CA3AF;
    margin-bottom: var(--spacing-md);
}

.btn-apply {
    width: 100%;
    background: var(--color-primary);
    color: var(--color-white);
    padding: 16px;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.btn-apply:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(64, 192, 87, 0.4);
}

/* Validation */
.form-input.error {
    border-color: #EF4444;
}

.error-message {
    color: #EF4444;
    font-size: 13px;
    margin-top: var(--spacing-xs);
}

/* Desktop only: ensure viewer overlay is on top so day/night and camera controls receive clicks (mobile unchanged) */
@media (min-width: 1025px) {
    .viewer-container {
        isolation: isolate;
        z-index: 0;
    }
    .viewer-container iframe {
        position: relative;
        z-index: 0;
    }
    .viewer-overlay-controls {
        z-index: 20;
        pointer-events: none;
    }
    .viewer-overlay-controls .day-night-toggle,
    .viewer-overlay-controls .camera-controls,
    .viewer-overlay-controls .camera-btn {
        pointer-events: auto;
    }
}

/* Responsive */
@media (max-width: 1024px) {
    .calculator-main {
        flex-direction: column;
    }
    
    .viewer-container {
        height: 400px;
    }
    
    .form-panel {
        flex-direction: column;
    }
    
    .step-nav {
        width: 100%;
        padding: var(--spacing-md);
        display: flex;
        overflow-x: auto;
        border-left: none;
        border-bottom: 1px solid var(--color-gray-light);
    }
    
    .step-nav-item {
        flex-direction: column;
        align-items: center;
        min-width: 80px;
        margin-right: var(--spacing-sm);
        margin-bottom: 0;
    }
    
    .step-nav-label {
        display: none;
    }
}

@media (max-width: 768px) {
    :root {
        --mobile-preview-height: 32vh;
        --mobile-step-nav-height: 58px;
        --mobile-footer-height: 120px;
    }

    .calculator-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .steps-container {
        padding: var(--spacing-md);
    }
    
    .step-title {
        font-size: 24px;
    }
    
    .step-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .viewer-container {
        position: fixed;
        left: 12px;
        right: 12px;
        bottom: calc(var(--mobile-step-nav-height) + var(--mobile-footer-height) + 12px);
        height: var(--mobile-preview-height);
        border-radius: 14px;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        z-index: 6;
        background: #0F172A;
    }

    .preview-titlebar {
        display: none;
    }

    .viewer-container iframe {
        border-radius: 14px;
    }

    .viewer-placeholder {
        padding-top: 40px;
    }

    .form-panel {
        padding-bottom: calc(var(--mobile-preview-height) + var(--mobile-step-nav-height) + var(--mobile-footer-height) + 24px);
    }

    .step-nav {
        position: fixed;
        left: 0;
        right: 0;
        bottom: var(--mobile-footer-height);
        height: var(--mobile-step-nav-height);
        display: flex;
        justify-content: center;
        gap: 8px;
        padding: 10px 12px;
        background: #FFFFFF;
        border-top: 1px solid var(--color-gray-light);
        border-bottom: 1px solid var(--color-gray-light);
        z-index: 7;
    }

    .step-nav-item {
        min-width: 28px;
        width: 28px;
        height: 28px;
        padding: 0;
        margin: 0;
        border-radius: 50%;
        justify-content: center;
    }

    .step-nav-number {
        width: 28px;
        height: 28px;
        font-size: 12px;
    }

    .step-nav-label {
        display: none;
    }

    .calculator-footer {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        height: var(--mobile-footer-height);
        padding: 12px 16px;
        z-index: 7;
        box-shadow: 0 -8px 20px rgba(0, 0, 0, 0.15);
    }

    .price-display {
        font-size: 14px;
        margin-bottom: 8px;
    }

    .price-amount {
        font-size: 24px;
    }

    .btn-apply {
        padding: 14px;
        font-size: 15px;
    }

    .header-close {
        display: none;
    }
}