/**
 * Apple-Style Configurator Design System
 * Inspired by Apple Store, Apple Pro apps, and iOS design language
 * Font: Inter (SF Pro alternative)
 * Primary Color: #2563eb
 */

/* ============================================
   CSS VARIABLES - Design Tokens
   ============================================ */
:root {
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-base: 15px;
    --font-size-lg: 17px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 32px;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --letter-spacing-tight: -0.022em;
    --letter-spacing-normal: -0.016em;
    
    /* Colors - Light Theme */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f5f5f7;
    --color-bg-tertiary: #e8e8ed;
    --color-bg-elevated: #ffffff;
    --color-bg-blur: rgba(255, 255, 255, 0.72);
    
    /* Text Colors */
    --color-text-primary: #1d1d1f;
    --color-text-secondary: #6e6e73;
    --color-text-tertiary: #86868b;
    --color-text-quaternary: #aeaeb2;
    
    /* Accent Colors */
    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --color-accent-light: #eff6ff;
    --color-accent-subtle: rgba(37, 99, 235, 0.08);
    
    /* Semantic Colors */
    --color-success: #34c759;
    --color-warning: #ff9500;
    --color-error: #ff3b30;
    
    /* Border Colors */
    --color-border-light: rgba(0, 0, 0, 0.06);
    --color-border-medium: rgba(0, 0, 0, 0.1);
    --color-border-focus: var(--color-accent);
    
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12), 0 4px 8px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16), 0 8px 16px rgba(0, 0, 0, 0.08);
    --shadow-modal: 0 24px 80px rgba(0, 0, 0, 0.2), 0 8px 24px rgba(0, 0, 0, 0.12);
    
    /* Spacing */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.25, 0.1, 0.25, 1);
    --transition-normal: 250ms cubic-bezier(0.25, 0.1, 0.25, 1);
    --transition-slow: 350ms cubic-bezier(0.25, 0.1, 0.25, 1);
    --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
    
    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal-backdrop: 900;
    --z-modal: 1000;
    --z-tooltip: 1100;
    
    /* Layout */
    --footer-height: 72px;
    --site-header-height: 106px; /* Existing site header (top bar + nav) */
    --panel-width-left: 340px;
    --panel-width-right: 360px;
    --preview-max-width: 900px;
}

/* ============================================
   GLOBAL RESET & BASE STYLES
   ============================================ */
.apple-configurator {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-regular);
    letter-spacing: var(--letter-spacing-normal);
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
    min-height: calc(100vh - var(--site-header-height));
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Flex container for header + main */
    display: flex;
    flex-direction: column;
}

.apple-configurator * {
    box-sizing: border-box;
}

/* ============================================
   TOP HEADER (Not used - using bottom footer instead)
   ============================================ */
.ac-header {
    display: none !important;
}

.ac-header-left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    min-width: 200px;
}

.ac-header-back {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: background var(--transition-fast);
    color: var(--color-accent);
}

.ac-header-back:hover {
    background: var(--color-accent-subtle);
}

.ac-header-back svg {
    width: 20px;
    height: 20px;
}

.ac-header-center {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.ac-header-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    letter-spacing: var(--letter-spacing-tight);
    color: var(--color-text-primary);
}

.ac-header-subtitle {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.ac-header-right {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    min-width: 200px;
    justify-content: flex-end;
}

.ac-header-price {
    text-align: right;
}

.ac-header-price-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

.ac-header-price-value {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    letter-spacing: var(--letter-spacing-tight);
}

.ac-header-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    padding: 0 var(--space-5);
    background: var(--color-accent);
    color: white;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.ac-header-cta:hover {
    background: var(--color-accent-hover);
    transform: scale(1.02);
}

.ac-header-cta:active {
    transform: scale(0.98);
}

/* ============================================
   BOTTOM FOOTER BAR
   ============================================ */
.ac-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--footer-height);
    background: var(--color-bg-blur);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-top: 1px solid var(--color-border-light);
    z-index: var(--z-sticky);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-8);
}

.ac-footer-left {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.ac-footer-info {
    display: flex;
    flex-direction: column;
}

.ac-footer-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    letter-spacing: var(--letter-spacing-tight);
}

.ac-footer-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.ac-footer-right {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.ac-footer-price {
    text-align: right;
}

.ac-footer-price-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.ac-footer-price-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    letter-spacing: var(--letter-spacing-tight);
}

.ac-footer-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 48px;
    padding: 0 var(--space-8);
    background: var(--color-accent);
    color: white;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.ac-footer-cta:hover {
    background: var(--color-accent-hover);
    transform: scale(1.02);
}

.ac-footer-cta:active {
    transform: scale(0.98);
}

/* ============================================
   MAIN LAYOUT - 3 PANEL
   ============================================ */
.ac-main {
    display: flex;
    flex: 1;
    min-height: 0; /* Important for flex children to scroll properly */
    padding-bottom: var(--footer-height);
}

.ac-panel {
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: var(--color-border-medium) transparent;
    height: calc(100vh - var(--site-header-height) - var(--footer-height));
}

.ac-panel::-webkit-scrollbar {
    width: 6px;
}

.ac-panel::-webkit-scrollbar-track {
    background: transparent;
}

.ac-panel::-webkit-scrollbar-thumb {
    background: var(--color-border-medium);
    border-radius: 3px;
}

/* Left Panel - Global Options */
.ac-panel-left {
    width: var(--panel-width-left);
    min-width: var(--panel-width-left);
    max-width: var(--panel-width-left);
    background: var(--color-bg-primary);
    border-right: 1px solid var(--color-border-light);
    padding: var(--space-5);
    flex-shrink: 0;
}

/* Center Panel - Preview */
.ac-panel-center {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-5);
    background: var(--color-bg-secondary);
    min-width: 0;
    overflow-y: auto;
}

/* Right Panel - Window Options */
.ac-panel-right {
    width: var(--panel-width-right);
    min-width: var(--panel-width-right);
    max-width: var(--panel-width-right);
    background: var(--color-bg-primary);
    border-left: 1px solid var(--color-border-light);
    padding: var(--space-5);
    flex-shrink: 0;
}

/* ============================================
   PREVIEW AREA
   ============================================ */
.ac-preview {
    width: 100%;
    max-width: var(--preview-max-width);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-5);
    flex: 1;
}

.ac-preview-container {
    width: 100%;
    max-width: 100%;
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--space-5);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    min-height: 550px;
    border: 1px solid var(--color-border-light);
    margin: auto;
}

/* Scale the window layout preview to fit */
.ac-preview-container #configure-window-layout {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: visible;
}

/* Clean preview - hide the dark "Window Layout Preview" header bar */
/* This header is generated by window-layout.js with inline styles */
.ac-preview-container div[style*="background: #374151"],
.ac-preview-container div[style*="background:#374151"],
#configure-window-layout div[style*="background: #374151"],
#configure-window-layout div[style*="background:#374151"] {
    display: none !important;
}

/* Also hide any h3 inside those dark headers */
.ac-preview-container h3[style*="color: #ffffff"],
.ac-preview-container h3[style*="color:#ffffff"],
#configure-window-layout h3[style*="color: #ffffff"],
#configure-window-layout h3[style*="color:#ffffff"] {
    display: none !important;
}

/* Clean up preview shadows and borders */
.ac-preview-container .rounded-b-lg,
.ac-preview-container .shadow-lg,
#configure-window-layout .shadow-lg {
    box-shadow: none !important;
}

/* Style the window layout container itself */
#configure-window-layout {
    background: transparent !important;
}

#configure-window-layout > div.bg-white {
    background: transparent !important;
    box-shadow: none !important;
    border-radius: 0 !important;
}

/* Ensure the SVG preview area is clean */
#configure-window-layout svg {
    background: transparent !important;
}

/* Ensure the layout container is properly centered */
.ac-preview-container #configure-window-layout {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

/* Make instruction text more compact */
.ac-preview-container .text-center.text-gray-500,
.ac-preview-container .text-sm.text-gray-400 {
    font-size: 12px;
    margin: 4px 0;
    opacity: 0.7;
}

/* Tighten up window layout padding */
.ac-preview-container .window-layout-preview {
    padding: 12px !important;
}

.ac-preview-hint {
    position: absolute;
    bottom: var(--space-4);
    left: 50%;
    transform: translateX(-50%);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.ac-preview-stats {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
    justify-content: center;
}

.ac-stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-4) var(--space-6);
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    min-width: 120px;
}

.ac-stat-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-1);
}

.ac-stat-value {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

/* ============================================
   VIEW TOGGLE (2D/3D)
   ============================================ */
.ac-view-toggle {
    display: flex;
    justify-content: center;
    gap: 4px;
    padding: 4px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.ac-view-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    background: transparent;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.ac-view-btn:hover {
    color: var(--color-text-primary);
}

.ac-view-btn.active {
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.ac-view-btn svg {
    opacity: 0.7;
}

.ac-view-btn.active svg {
    opacity: 1;
    color: var(--color-accent);
}

/* View Panels */
.ac-view-panel {
    display: none;
    width: 100%;
    height: 100%;
}

.ac-view-panel.active {
    display: block;
}

/* 3D Placeholder */
.ac-3d-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    padding: var(--space-8);
    text-align: center;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: var(--radius-xl);
    border: 2px dashed var(--color-border);
}

.ac-3d-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--color-accent-light) 0%, #dbeafe 100%);
    border-radius: 50%;
    margin-bottom: var(--space-6);
    animation: float 3s ease-in-out infinite;
}

.ac-3d-icon svg {
    color: var(--color-accent);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.ac-3d-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin: 0 0 var(--space-2) 0;
}

.ac-3d-subtitle {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-accent);
    margin: 0 0 var(--space-4) 0;
    padding: 6px 16px;
    background: var(--color-accent-light);
    border-radius: var(--radius-full);
}

.ac-3d-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    max-width: 400px;
    line-height: 1.6;
    margin: 0 0 var(--space-6) 0;
}

.ac-3d-features {
    display: flex;
    gap: var(--space-6);
    flex-wrap: wrap;
    justify-content: center;
}

.ac-3d-feature {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.ac-3d-feature svg {
    color: var(--color-accent);
}

/* ============================================
   SECTION CARDS
   ============================================ */
.ac-section {
    margin-bottom: var(--space-6);
}

.ac-section:last-child {
    margin-bottom: 0;
}

.ac-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--color-border-light);
}

.ac-section-title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-tertiary);
}

.ac-section-badge {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-accent);
    background: var(--color-accent-subtle);
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

/* ============================================
   OPTION ROW (Clickable to open modal)
   ============================================ */
.ac-option-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    margin: 0 calc(var(--space-4) * -1);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
    user-select: none;
}

.ac-option-row:hover {
    background: var(--color-bg-secondary);
}

.ac-option-row:active {
    background: var(--color-bg-tertiary);
}

.ac-option-left {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-width: 0;
}

.ac-option-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--color-bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}

.ac-option-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ac-option-icon.color-swatch {
    border: 2px solid var(--color-border-light);
}

.ac-option-info {
    min-width: 0;
}

.ac-option-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    margin-bottom: 2px;
}

.ac-option-value {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ac-option-right {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
    color: var(--color-text-quaternary);
}

.ac-option-chevron {
    width: 16px;
    height: 16px;
}

/* ============================================
   SEGMENTED CONTROL (for simple options)
   ============================================ */
.ac-segmented {
    display: flex;
    background: var(--color-bg-tertiary);
    padding: 3px;
    border-radius: var(--radius-md);
    gap: 2px;
}

.ac-segmented-option {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.ac-segmented-option:hover:not(.active) {
    color: var(--color-text-primary);
}

.ac-segmented-option.active {
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-xs);
}

/* ============================================
   INPUT FIELDS
   ============================================ */
.ac-input-group {
    margin-bottom: var(--space-4);
}

.ac-input-label {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2);
}

.ac-input {
    width: 100%;
    height: 44px;
    padding: 0 var(--space-4);
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.ac-input:hover {
    background: var(--color-bg-tertiary);
}

.ac-input:focus {
    outline: none;
    background: var(--color-bg-primary);
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

.ac-input-row {
    display: flex;
    gap: var(--space-3);
}

.ac-input-row .ac-input-group {
    flex: 1;
}

.ac-input-suffix {
    position: absolute;
    right: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    pointer-events: none;
}

.ac-input-wrapper {
    position: relative;
}

.ac-input-wrapper .ac-input {
    padding-right: var(--space-10);
}

/* ============================================
   MODAL SYSTEM
   ============================================ */
.ac-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.ac-modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.ac-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    width: 90%;
    max-width: 480px;
    max-height: 85vh;
    background: var(--color-bg-primary);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-modal);
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.ac-modal.active {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.ac-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--color-border-light);
    flex-shrink: 0;
}

.ac-modal-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.ac-modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--color-text-secondary);
}

.ac-modal-close:hover {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

.ac-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-6);
}

.ac-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    padding: var(--space-5) var(--space-6);
    border-top: 1px solid var(--color-border-light);
    flex-shrink: 0;
}

/* Modal Option List */
.ac-modal-options {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.ac-modal-option {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

.ac-modal-option:hover {
    background: var(--color-bg-secondary);
}

.ac-modal-option.selected {
    background: var(--color-accent-light);
    border-color: var(--color-accent);
}

.ac-modal-option-image {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--color-bg-tertiary);
    overflow: hidden;
    flex-shrink: 0;
}

.ac-modal-option-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ac-modal-option-content {
    flex: 1;
    min-width: 0;
}

.ac-modal-option-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.ac-modal-option-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: 2px;
}

.ac-modal-option-check {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    border: 2px solid var(--color-border-medium);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.ac-modal-option.selected .ac-modal-option-check {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

/* Modal Color Grid */
.ac-modal-colors {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: var(--space-4);
}

.ac-modal-color {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

.ac-modal-color:hover {
    background: var(--color-bg-secondary);
}

.ac-modal-color.selected {
    background: var(--color-accent-light);
    border-color: var(--color-accent);
}

.ac-modal-color-swatch {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    border: 3px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.ac-modal-color.selected .ac-modal-color-swatch::after {
    content: '✓';
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
    color: white;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
}

.ac-modal-color-name {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    text-align: center;
}

/* Modal Image Grid (for grilles, glass, etc.) */
.ac-modal-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

.ac-modal-grid-item {
    display: flex;
    flex-direction: column;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid var(--color-border-light);
    background: var(--color-bg-primary);
}

.ac-modal-grid-item:hover {
    border-color: var(--color-border-medium);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.ac-modal-grid-item.selected {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

.ac-modal-grid-item-image {
    aspect-ratio: 4/3;
    background: var(--color-bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.ac-modal-grid-item-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.ac-modal-grid-item-info {
    padding: var(--space-3);
    text-align: center;
}

.ac-modal-grid-item-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

/* ============================================
   BUTTONS
   ============================================ */
.ac-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    height: 44px;
    padding: 0 var(--space-5);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    font-family: inherit;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.ac-btn:active {
    transform: scale(0.98);
}

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

.ac-btn-primary:hover {
    background: var(--color-accent-hover);
}

.ac-btn-secondary {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

.ac-btn-secondary:hover {
    background: var(--color-border-medium);
}

.ac-btn-ghost {
    background: transparent;
    color: var(--color-accent);
}

.ac-btn-ghost:hover {
    background: var(--color-accent-subtle);
}

/* ============================================
   WINDOW SELECTOR TABS (Right Panel)
   ============================================ */
.ac-window-tabs {
    display: flex;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-6);
    overflow-x: auto;
}

.ac-window-tab {
    flex: 1;
    min-width: 60px;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
}

.ac-window-tab:hover:not(.active) {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

.ac-window-tab.active {
    background: var(--color-bg-primary);
    color: var(--color-accent);
    box-shadow: var(--shadow-sm);
}

/* ============================================
   MOBILE RESPONSIVE
   ============================================ */
@media (max-width: 1200px) {
    :root {
        --panel-width-left: 260px;
        --panel-width-right: 280px;
    }
}

@media (max-width: 1024px) {
    :root {
        --panel-width-left: 240px;
        --panel-width-right: 260px;
    }
}

@media (max-width: 900px) {
    /* Switch to mobile layout */
    .ac-main {
        flex-direction: column;
        padding-bottom: 80px;
    }
    
    .ac-panel-left,
    .ac-panel-right {
        width: 100%;
        max-width: 100%;
        height: auto;
        max-height: none;
        border: none;
        padding: var(--space-4);
    }
    
    .ac-panel-center {
        height: auto;
        min-height: 40vh;
        padding: var(--space-4);
        order: -1; /* Move preview to top */
    }
    
    .ac-preview-container {
        min-height: 280px;
    }
    
    .ac-footer {
        display: none;
    }
    
    .ac-mobile-footer {
        display: flex;
    }
}

/* Mobile Panels (hidden - using responsive panels instead) */
.ac-mobile-panels {
    display: none !important;
}

.ac-mobile-accordion {
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.ac-mobile-accordion-item {
    border-bottom: 1px solid var(--color-border-light);
}

.ac-mobile-accordion-item:last-child {
    border-bottom: none;
}

.ac-mobile-accordion-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.ac-mobile-accordion-header:hover {
    background: var(--color-bg-secondary);
}

.ac-mobile-accordion-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.ac-mobile-accordion-icon {
    width: 24px;
    height: 24px;
    color: var(--color-text-tertiary);
    transition: transform var(--transition-normal);
}

.ac-mobile-accordion-item.open .ac-mobile-accordion-icon {
    transform: rotate(180deg);
}

.ac-mobile-accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.ac-mobile-accordion-item.open .ac-mobile-accordion-content {
    max-height: 2000px;
}

.ac-mobile-accordion-body {
    padding: 0 var(--space-5) var(--space-5);
}

/* Mobile Bottom CTA */
.ac-mobile-footer {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-4);
    background: var(--color-bg-blur);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-top: 1px solid var(--color-border-light);
    z-index: var(--z-sticky);
}

/* Desktop footer visible by default */
.ac-footer {
    display: flex;
}

.ac-mobile-footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.ac-mobile-footer-price {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.ac-mobile-footer-cta {
    flex: 1;
    max-width: 200px;
    height: 50px;
    font-size: var(--font-size-base);
}

/* ============================================
   BOTTOM SHEET MODAL (Mobile)
   ============================================ */
@media (max-width: 900px) {
    .ac-modal {
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        transform: translateY(100%);
        width: 100%;
        max-width: 100%;
        max-height: 90vh;
        border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
    }
    
    .ac-modal.active {
        transform: translateY(0);
    }
    
    .ac-modal-header {
        position: relative;
    }
    
    .ac-modal-header::before {
        content: '';
        position: absolute;
        top: 8px;
        left: 50%;
        transform: translateX(-50%);
        width: 36px;
        height: 5px;
        background: var(--color-border-medium);
        border-radius: var(--radius-full);
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes scaleIn {
    from { 
        opacity: 0;
        transform: scale(0.95);
    }
    to { 
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes bounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.animate-fade-in {
    animation: fadeIn var(--transition-normal) ease-out;
}

.animate-slide-up {
    animation: slideUp var(--transition-normal) ease-out;
}

.animate-scale-in {
    animation: scaleIn var(--transition-spring) ease-out;
}

/* Staggered animations for lists */
.ac-stagger > *:nth-child(1) { animation-delay: 0ms; }
.ac-stagger > *:nth-child(2) { animation-delay: 50ms; }
.ac-stagger > *:nth-child(3) { animation-delay: 100ms; }
.ac-stagger > *:nth-child(4) { animation-delay: 150ms; }
.ac-stagger > *:nth-child(5) { animation-delay: 200ms; }
.ac-stagger > *:nth-child(6) { animation-delay: 250ms; }

/* ============================================
   UTILITY CLASSES
   ============================================ */
.ac-hidden { display: none !important; }
.ac-visible { display: block !important; }
.ac-flex { display: flex !important; }
.ac-text-center { text-align: center; }
.ac-text-right { text-align: right; }
.ac-mb-0 { margin-bottom: 0 !important; }
.ac-mb-4 { margin-bottom: var(--space-4) !important; }
.ac-mb-6 { margin-bottom: var(--space-6) !important; }

/* ============================================
   LEGACY SECTION HANDLING
   ============================================ */

/* Ensure apple-configurator takes full width in parent */
main:has(.apple-configurator) {
    padding: 0 !important;
    margin: 0 !important;
    max-width: none !important;
}

.apple-configurator {
    width: 100%;
    margin: 0;
}

/* Hide legacy sections but keep them in DOM for functionality */
.ac-legacy-hidden {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
    pointer-events: none;
    visibility: hidden;
}

/* Legacy sections are hidden but functional */

/* ============================================
   ADDITIONAL POLISH
   ============================================ */

/* Smooth transitions for all interactive elements */
.ac-option-row,
.ac-segmented-option,
.ac-window-tab,
.ac-btn,
.ac-modal-option,
.ac-modal-color,
.ac-modal-grid-item {
    will-change: transform, background-color;
}

/* Focus visible styles for accessibility */
.ac-option-row:focus-visible,
.ac-segmented-option:focus-visible,
.ac-window-tab:focus-visible,
.ac-btn:focus-visible,
.ac-modal-close:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark mode support (future) */
@media (prefers-color-scheme: dark) {
    /* Will be implemented in future iteration */
}

/* Print styles */
@media print {
    .ac-header,
    .ac-mobile-footer,
    .ac-panel-left,
    .ac-panel-right,
    .ac-preview-hint {
        display: none !important;
    }
    
    .ac-panel-center {
        width: 100%;
        padding: 0;
    }
    
    .ac-preview-container {
        box-shadow: none;
        border: 1px solid #000;
    }
}