/* CSS Variables for Light/Dark Theme */
:root {
    --background: 0 0% 100%;
    --foreground: 0 0% 3.9%;
    --card: 0 0% 100%;
    --card-foreground: 0 0% 3.9%;
    --popover: 0 0% 100%;
    --popover-foreground: 0 0% 3.9%;
    --primary: 45 93% 53%;
    --primary-foreground: 0 0% 9%;
    --secondary: 0 0% 96.1%;
    --secondary-foreground: 0 0% 9%;
    --muted: 0 0% 96.1%;
    --muted-foreground: 0 0% 45.1%;
    --accent: 0 0% 96.1%;
    --accent-foreground: 0 0% 9%;
    --destructive: 0 84.2% 60.2%;
    --destructive-foreground: 0 0% 98%;
    --border: 0 0% 89.8%;
    --input: 0 0% 89.8%;
    --ring: 45 93% 53%;
    --radius: 0.5rem;
}

.dark {
    --background: 0 0% 3.9%;
    --foreground: 0 0% 98%;
    --card: 0 0% 3.9%;
    --card-foreground: 0 0% 98%;
    --popover: 0 0% 3.9%;
    --popover-foreground: 0 0% 98%;
    --primary: 45 93% 53%;
    --primary-foreground: 0 0% 9%;
    --secondary: 0 0% 14.9%;
    --secondary-foreground: 0 0% 98%;
    --muted: 0 0% 14.9%;
    --muted-foreground: 0 0% 63.9%;
    --accent: 0 0% 14.9%;
    --accent-foreground: 0 0% 98%;
    --destructive: 0 62.8% 30.6%;
    --destructive-foreground: 0 0% 98%;
    --border: 0 0% 14.9%;
    --input: 0 0% 14.9%;
    --ring: 45 93% 53%;
}

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

/* Base Styles */
html {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

body {
    background: hsl(var(--background));
    color: hsl(var(--foreground));
    line-height: 1.6;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1800px;
    margin: 0 auto;
    padding: 24px;
}

/* Header */
.header {
    background: hsl(var(--card));
    border: 1px solid hsl(var(--border));
    border-radius: var(--radius);
    padding: 20px 32px;
    margin-bottom: 24px;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 24px;
}

.logo {
    height: 40px;
    width: auto;
}

.dark .logo {
    content: url('/XMPie_WhiteLogo.png');
}

.header-text {
    flex: 1;
}

.header-text h1 {
    font-size: 24px;
    font-weight: 600;
    color: hsl(var(--foreground));
    margin-bottom: 2px;
}

.subtitle {
    font-size: 14px;
    color: hsl(var(--muted-foreground));
}

/* GitHub Link */
.github-link {
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    border: 1px solid hsl(var(--border));
    background: hsl(var(--background));
    display: flex;
    align-items: center;
    justify-content: center;
    color: hsl(var(--foreground));
    transition: all 0.2s ease;
}

.github-link:hover {
    background: hsl(var(--muted));
    color: hsl(var(--primary));
}

.github-icon {
    width: 20px;
    height: 20px;
}

/* Theme Toggle */
.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    border: 1px solid hsl(var(--border));
    background: hsl(var(--background));
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.theme-toggle:hover {
    background: hsl(var(--accent));
}

.theme-icon {
    width: 20px;
    height: 20px;
    color: hsl(var(--foreground));
}

/* Sun icon visible in light mode, moon in dark mode */
.sun-icon {
    display: block;
}

.moon-icon {
    display: none;
}

.dark .sun-icon {
    display: none;
}

.dark .moon-icon {
    display: block;
}

/* Main Content Layout */
.main-content {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 24px;
    margin-bottom: 24px;
}

.main-content.hidden {
    display: none;
}

@media (max-width: 1200px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

/* Panel Styles */
.form-panel,
.preview-panel {
    background: hsl(var(--card));
    border: 1px solid hsl(var(--border));
    border-radius: var(--radius);
    padding: 24px;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.preview-panel {
    min-height: 800px;
    display: flex;
    flex-direction: column;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid hsl(var(--border));
}

.panel-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: hsl(var(--foreground));
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 500;
    color: hsl(var(--foreground));
    margin-bottom: 8px;
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid hsl(var(--input));
    border-radius: var(--radius);
    font-size: 14px;
    background: hsl(var(--background));
    color: hsl(var(--foreground));
    transition: all 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: hsl(var(--ring));
    box-shadow: 0 0 0 3px hsla(var(--ring), 0.1);
}

.form-control:hover {
    border-color: hsl(var(--muted-foreground));
}

/* Date Input Styling */
.date-input {
    position: relative;
    cursor: pointer;
}

.date-input::-webkit-calendar-picker-indicator {
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.2s ease;
}

.date-input::-webkit-calendar-picker-indicator:hover {
    opacity: 1;
}

/* Style the calendar icon in dark mode */
.dark .date-input::-webkit-calendar-picker-indicator {
    filter: invert(1);
}

/* Date input specific styling */
input[type="date"].form-control {
    appearance: none;
    -webkit-appearance: none;
    position: relative;
    padding-right: 40px;
}

input[type="date"].form-control::-webkit-date-and-time-value {
    text-align: left;
}

/* Button Styles */
.button-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid hsl(var(--border));
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

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

.btn-primary:hover {
    opacity: 0.9;
}

.btn-primary:active {
    opacity: 0.8;
}

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

.btn-secondary {
    background: hsl(var(--secondary));
    color: hsl(var(--secondary-foreground));
    border: 1px solid hsl(var(--border));
}

.btn-secondary:hover {
    background: hsl(var(--accent));
}

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

/* Info Section */
.info-section {
    margin-top: 24px;
    padding: 16px;
    background: hsl(var(--muted));
    border-radius: var(--radius);
    border: 1px solid hsl(var(--border));
}

.info-section h3 {
    font-size: 14px;
    font-weight: 600;
    color: hsl(var(--foreground));
    margin-bottom: 12px;
}

.info-section p {
    font-size: 13px;
    color: hsl(var(--muted-foreground));
    margin-bottom: 12px;
}

.info-link {
    display: inline-block;
    color: hsl(var(--primary));
    font-weight: 500;
    text-decoration: none;
    font-size: 13px;
    transition: opacity 0.2s ease;
}

.info-link:hover {
    opacity: 0.8;
}

/* Preview Controls */
.preview-controls {
    display: flex;
    gap: 8px;
}

.view-toggle {
    width: 36px;
    height: 36px;
    border-radius: var(--radius);
    border: 1px solid hsl(var(--border));
    background: hsl(var(--background));
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.view-toggle:hover {
    background: hsl(var(--accent));
}

.view-icon {
    width: 18px;
    height: 18px;
    position: relative;
}

/* Spread view icon (two pages) */
.view-icon::before {
    content: '';
    position: absolute;
    width: 7px;
    height: 12px;
    border: 2px solid hsl(var(--foreground));
    border-radius: 1px;
    left: 0;
}

.view-icon::after {
    content: '';
    position: absolute;
    width: 7px;
    height: 12px;
    border: 2px solid hsl(var(--foreground));
    border-radius: 1px;
    right: 0;
}

/* Single page view icon */
.view-icon.single::before {
    left: 50%;
    transform: translateX(-50%);
}

.view-icon.single::after {
    display: none;
}

/* 3D View Icon */
.view-3d-icon {
    width: 20px;
    height: 18px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.view-3d-icon::before {
    content: '3D';
    font-size: 11px;
    font-weight: 700;
    color: hsl(var(--foreground));
    letter-spacing: -0.5px;
}

.view-toggle.active {
    background: hsl(var(--primary));
    border-color: hsl(var(--primary));
}

.view-toggle.active .view-3d-icon::before {
    color: hsl(var(--primary-foreground));
}

/* Loading State */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    flex: 1;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid hsl(var(--border));
    border-top-color: hsl(var(--primary));
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-state p {
    margin-top: 16px;
    color: hsl(var(--muted-foreground));
    font-size: 14px;
}

/* Error State */
.error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    flex: 1;
}

.error-message {
    color: hsl(var(--destructive));
    font-weight: 500;
    margin-bottom: 16px;
    font-size: 14px;
}

/* Initial State */
.initial-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    flex: 1;
}

.initial-message {
    color: hsl(var(--muted-foreground));
    font-size: 14px;
    text-align: center;
}

/* Preview Container */
.preview-container {
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* Single Page View */
.single-page-view {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.page-navigation {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px;
    background: hsl(var(--muted));
    border-radius: var(--radius);
    margin-bottom: 16px;
    border: 1px solid hsl(var(--border));
}

.nav-btn {
    padding: 6px 12px;
    background: hsl(var(--background));
    border: 1px solid hsl(var(--border));
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    color: hsl(var(--foreground));
}

.nav-btn:hover:not(:disabled) {
    background: hsl(var(--accent));
}

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

.page-indicator {
    font-weight: 500;
    font-size: 13px;
    color: hsl(var(--foreground));
}

.page-display {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: hsl(var(--muted));
    border-radius: var(--radius);
    padding: 20px;
    overflow: auto;
    border: 1px solid hsl(var(--border));
}

.preview-image {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.dark .preview-image {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

/* Spread View */
.spread-view {
    height: 100%;
}

.spread-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    height: 100%;
    background: hsl(var(--muted));
    border-radius: var(--radius);
    padding: 20px;
    border: 1px solid hsl(var(--border));
}

.spread-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.page-label {
    font-weight: 500;
    color: hsl(var(--muted-foreground));
    font-size: 13px;
}

@media (max-width: 900px) {
    .spread-container {
        grid-template-columns: 1fr;
    }
}

/* 3D View */
.view-3d {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.view-3d-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px;
    background: hsl(var(--muted));
    border-radius: var(--radius);
    margin-bottom: 16px;
    border: 1px solid hsl(var(--border));
    gap: 12px;
}

.control-btn {
    padding: 8px 16px;
    background: hsl(var(--background));
    border: 1px solid hsl(var(--border));
    border-radius: var(--radius);
    font-size: 18px;
    cursor: pointer;
    transition: all 0.2s ease;
    color: hsl(var(--foreground));
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
}

.control-btn:hover {
    background: hsl(var(--accent));
    border-color: hsl(var(--primary));
}

.control-info {
    flex: 1;
    text-align: center;
    font-size: 12px;
    color: hsl(var(--muted-foreground));
}

.scene-3d {
    flex: 1;
    background: hsl(var(--muted));
    border-radius: var(--radius);
    border: 1px solid hsl(var(--border));
    overflow: hidden;
    position: relative;
    cursor: grab;
    user-select: none;
}

.scene-3d:active {
    cursor: grabbing;
}

.viewport-3d {
    width: 100%;
    height: 100%;
    perspective: 1200px;
    perspective-origin: center center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.brochure-3d {
    position: relative;
    width: 400px;
    height: 550px;
    transform-style: preserve-3d;
    transition: transform 0.1s ease-out;
}

.page-3d {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.page-3d img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.page-front {
    transform: translateZ(2px);
}

.page-back {
    transform: translateZ(-2px) rotateY(180deg);
}

.dark .page-3d {
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.7);
}

@media (max-width: 768px) {
    .brochure-3d {
        width: 300px;
        height: 400px;
    }
    
    .control-info {
        font-size: 10px;
    }
}

/* Product Carousel */
.product-carousel {
    background: hsl(var(--card));
    border: 1px solid hsl(var(--border));
    border-radius: var(--radius);
    margin-bottom: 24px;
    padding: 20px;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.carousel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.carousel-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: hsl(var(--foreground));
    margin: 0;
}

.carousel-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: hsl(var(--foreground));
    font-size: 16px;
    transition: all 0.2s ease;
    border-radius: 4px;
}

.carousel-toggle:hover {
    background: hsl(var(--muted));
}

.carousel-toggle .toggle-icon {
    display: inline-block;
    transition: transform 0.3s ease;
}

.product-carousel.collapsed .toggle-icon {
    transform: rotate(-90deg);
}

.carousel-content {
    max-height: 400px;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    opacity: 1;
}

.product-carousel.collapsed .carousel-content {
    max-height: 0;
    opacity: 0;
}

.carousel-container {
    display: flex;
    align-items: center;
    gap: 16px;
    position: relative;
}

.carousel-track-container {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.carousel-track {
    display: flex;
    gap: 16px;
    transition: transform 0.3s ease;
    padding: 4px;
}

.carousel-item {
    flex: 0 0 auto;
    width: 200px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.carousel-item:hover {
    transform: translateY(-4px);
}

.carousel-item.active .carousel-card {
    border-color: hsl(var(--primary));
    box-shadow: 0 4px 16px rgba(253, 184, 19, 0.3);
}

.carousel-card {
    background: hsl(var(--muted));
    border: 2px solid hsl(var(--border));
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.2s ease;
}

.carousel-card:hover {
    border-color: hsl(var(--primary) / 0.5);
}

.carousel-thumbnail {
    width: 100%;
    height: 240px;
    object-fit: cover;
    background: hsl(var(--muted));
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.carousel-thumbnail.loading {
    background: linear-gradient(90deg, hsl(var(--muted)) 0%, hsl(var(--accent)) 50%, hsl(var(--muted)) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.carousel-info {
    padding: 12px;
}

.carousel-title {
    font-size: 14px;
    font-weight: 600;
    color: hsl(var(--foreground));
    margin: 0 0 4px 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.carousel-description {
    font-size: 12px;
    color: hsl(var(--muted-foreground));
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

.carousel-nav {
    flex: 0 0 auto;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid hsl(var(--border));
    background: hsl(var(--card));
    color: hsl(var(--foreground));
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    transition: all 0.2s ease;
    z-index: 10;
}

.carousel-nav:hover:not(:disabled) {
    background: hsl(var(--primary));
    color: hsl(var(--primary-foreground));
    border-color: hsl(var(--primary));
}

.carousel-nav:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.carousel-nav span {
    line-height: 1;
}

@media (max-width: 768px) {
    .carousel-item {
        width: 160px;
    }
    
    .carousel-thumbnail {
        height: 200px;
    }
}

/* Footer */
.footer {
    background: hsl(var(--card));
    border: 1px solid hsl(var(--border));
    border-radius: var(--radius);
    padding: 16px;
    text-align: center;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.footer p {
    color: hsl(var(--muted-foreground));
    font-size: 13px;
}

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

.preview-image {
    animation: fadeIn 0.3s ease;
}

/* Utility Classes */
.hidden {
    display: none !important;
}