/* ========================================
   Demo Page Styles
   ======================================== */

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

:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --secondary: #8b5cf6;
    --accent: #10b981;
    --dark: #1e293b;
    --dark-light: #334155;
    --gray: #64748b;
    --gray-light: #cbd5e1;
    --gray-lighter: #f1f5f9;
    --white: #ffffff;
    --success: #10b981;
    --error: #ef4444;
    
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    --transition: 250ms ease;
}

body {
    font-family: var(--font-primary);
    background-color: var(--gray-lighter);
    color: var(--dark);
    overflow-x: hidden;
}

/* ========================================
   Header
   ======================================== */
.demo-header {
    background-color: var(--white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.demo-header__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-lg);
    max-width: 1920px;
    margin: 0 auto;
}

.demo-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    transition: transform var(--transition);
}

.demo-logo:hover {
    transform: scale(1.05);
}

.logo-icon {
    font-size: 2rem;
}

.demo-header__actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

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

.btn--primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background-color: transparent;
    color: var(--dark);
    border: 2px solid var(--gray-light);
}

.btn--secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

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

.btn--accent:hover {
    background-color: #059669;
}

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

.btn--error:hover {
    background-color: #dc2626;
}

.btn--outline {
    background-color: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

.btn--large {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1.125rem;
}

/* ========================================
   Demo Container
   ======================================== */
.demo-container {
    display: grid;
    grid-template-columns: 280px 1fr 300px;
    height: calc(100vh - 70px);
    max-width: 1920px;
    margin: 0 auto;
}

/* ========================================
   Sidebar
   ======================================== */
.demo-sidebar {
    background-color: var(--white);
    border-right: 1px solid var(--gray-light);
    overflow-y: auto;
    padding: var(--spacing-lg);
}

.sidebar-section {
    margin-bottom: var(--spacing-xl);
}

.sidebar-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--dark);
}

.sidebar-description {
    font-size: 0.875rem;
    color: var(--gray);
    margin-bottom: var(--spacing-sm);
}

/* Templates */
.templates-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
}

.template-card {
    background-color: var(--gray-lighter);
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition);
    text-align: center;
}

.template-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.template-preview {
    margin-bottom: var(--spacing-xs);
}

.template-icon {
    font-size: 2rem;
}

.template-name {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark);
}

/* Components */
.components-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.component-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background-color: var(--gray-lighter);
    border: 2px dashed var(--gray-light);
    border-radius: var(--radius-md);
    cursor: grab;
    transition: all var(--transition);
}

.component-item:hover {
    border-color: var(--primary);
    background-color: var(--white);
    transform: translateX(4px);
}

.component-item:active {
    cursor: grabbing;
}

.component-icon {
    font-size: 1.5rem;
}

.component-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--dark);
}

/* Customization */
.customization-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.option-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.option-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark);
}

.option-select {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 2px solid var(--gray-light);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.875rem;
    cursor: pointer;
    transition: border-color var(--transition);
}

.option-select:focus {
    outline: none;
    border-color: var(--primary);
}

/* ========================================
   Main Panel Area
   ======================================== */
.demo-main {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg);
    overflow-y: auto;
}

.demo-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background-color: var(--white);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.toolbar-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.toolbar-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray);
}

.view-mode-toggle {
    display: flex;
    gap: var(--spacing-xs);
}

.view-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: transparent;
    border: 2px solid var(--gray-light);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
}

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

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

/* Panel Canvas */
.panel-container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.panel-canvas {
    width: 100%;
    max-width: 1200px;
    min-height: 600px;
    background-color: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition);
}

.panel-canvas[data-view="tablet"] {
    max-width: 768px;
}

.panel-canvas[data-view="tv"] {
    max-width: 1920px;
}

.panel-dropzone {
    min-height: 500px;
    border: 3px dashed var(--gray-light);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    transition: all var(--transition);
    gap: var(--spacing-md);
}

.panel-dropzone[data-layout="column"] {
    flex-direction: column;
}

.panel-dropzone[data-layout="row"] {
    flex-direction: row;
    flex-wrap: wrap;
}

.panel-dropzone[data-layout="grid-2"] {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.panel-dropzone[data-layout="grid-3"] {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
}

.panel-dropzone[data-layout="mixed"] {
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-template-rows: auto auto;
}

.panel-dropzone.drag-over {
    border-color: var(--primary);
    background-color: rgba(59, 130, 246, 0.05);
}

.dropzone-placeholder {
    text-align: center;
    padding: var(--spacing-xl);
    grid-column: 1 / -1;
    align-self: center;
    justify-self: center;
}

.placeholder-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.dropzone-placeholder h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
}

.dropzone-placeholder p {
    color: var(--gray);
}

/* Panel Components */
.panel-component {
    position: relative;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    background-color: var(--gray-lighter);
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition);
}

.panel-component:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.panel-component.selected {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.component-remove {
    position: absolute;
    top: var(--spacing-xs);
    right: var(--spacing-xs);
    width: 28px;
    height: 28px;
    background-color: var(--error);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition);
}

.panel-component:hover .component-remove {
    opacity: 1;
}

/* Demo Tips */
.demo-tips {
    margin-top: var(--spacing-lg);
}

.tip-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--white);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.tip-icon {
    font-size: 1.5rem;
}

.tip-content {
    font-size: 0.875rem;
    color: var(--dark-light);
}

/* ========================================
   Properties Panel
   ======================================== */
.demo-properties {
    background-color: var(--white);
    border-left: 1px solid var(--gray-light);
    padding: var(--spacing-lg);
    overflow-y: auto;
}

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

.properties-header h3 {
    font-size: 1.125rem;
    font-weight: 700;
}

.close-btn {
    width: 32px;
    height: 32px;
    background-color: transparent;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray);
    transition: color var(--transition);
}

.close-btn:hover {
    color: var(--error);
}

.properties-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* ========================================
   Modal
   ======================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--white);
    border-radius: var(--radius-xl);
    max-width: 90%;
    max-height: 90%;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

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

.modal-body {
    padding: var(--spacing-lg);
    max-height: 80vh;
    overflow-y: auto;
}

.simulation-panel {
    min-height: 400px;
    max-height: 60vh;
    overflow-y: auto;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    color: var(--white);
    margin-bottom: var(--spacing-lg);
}

.simulation-controls {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ========================================
   Toast
   ======================================== */
.toast {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--success);
    color: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    transform: translateY(200%);
    transition: transform var(--transition);
    z-index: 2000;
}

.toast.show {
    transform: translateY(0);
}

.toast-icon {
    font-size: 1.5rem;
}

/* ========================================
   Theme Variations
   ======================================== */
.panel-canvas[data-theme="green"] {
    --primary: #10b981;
    --primary-dark: #059669;
}

.panel-canvas[data-theme="purple"] {
    --primary: #8b5cf6;
    --primary-dark: #7c3aed;
}

.panel-canvas[data-theme="orange"] {
    --primary: #f59e0b;
    --primary-dark: #d97706;
}

.panel-canvas[data-theme="dark"] {
    --primary: #1e293b;
    --primary-dark: #0f172a;
    background-color: #1e293b;
    color: var(--white);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1200px) {
    .demo-container {
        grid-template-columns: 250px 1fr;
    }
    
    .demo-properties {
        position: fixed;
        right: 0;
        top: 70px;
        bottom: 0;
        width: 300px;
        z-index: 50;
        box-shadow: var(--shadow-xl);
    }
    
    .data-config-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .demo-container {
        grid-template-columns: 1fr;
    }
    
    .demo-sidebar {
        display: none;
    }
    
    .demo-header__actions {
        flex-wrap: wrap;
    }
    
    .view-mode-toggle {
        display: none;
    }
}

/* ========================================
   Data Configuration Modal Styles
   ======================================== */
.modal-content--large {
    max-width: 95%;
    width: 1200px;
}

.data-config-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.data-config-left,
.data-config-right {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.help-text {
    font-size: 0.875rem;
    color: var(--gray);
    margin: 0;
}

.json-examples {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.example-btn {
    padding: 0.5rem 1rem;
    background-color: var(--gray-lighter);
    border: 2px solid var(--gray-light);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.25s ease;
}

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

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

.json-editor {
    width: 100%;
    padding: 1rem;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    border: 2px solid var(--gray-light);
    border-radius: 0.5rem;
    resize: vertical;
    background-color: #1e293b;
    color: #e2e8f0;
}

.json-editor:focus {
    outline: none;
    border-color: var(--primary);
}

.json-actions {
    display: flex;
    gap: 0.5rem;
}

.validation-message {
    padding: 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
}

.validation-message.success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #10b981;
}

.validation-message.error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #ef4444;
}

.variables-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1rem;
    background-color: var(--gray-lighter);
    border-radius: 0.5rem;
    max-height: 300px;
    overflow-y: auto;
}

.variable-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background-color: var(--white);
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.25s ease;
}

.variable-item:hover {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transform: translateX(4px);
}

.variable-item code {
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    background-color: var(--gray-lighter);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
}

.variable-desc {
    font-size: 0.875rem;
    color: var(--gray);
}

.usage-example {
    padding: 1.5rem;
    background: linear-gradient(135deg, #dbeafe 0%, #e0e7ff 100%);
    border-radius: 0.75rem;
    border: 2px solid var(--primary-light);
}

.usage-example h4 {
    margin-bottom: 0.75rem;
    color: var(--dark);
}

.usage-example p {
    margin: 0.5rem 0;
    font-size: 0.875rem;
    color: var(--dark-light);
}

.code-block {
    display: block;
    padding: 0.75rem;
    background-color: #1e293b;
    color: #e2e8f0;
    border-radius: 0.375rem;
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    margin: 0.5rem 0;
}

.result-preview {
    margin-top: 0.75rem;
    padding: 0.75rem;
    background-color: var(--white);
    border-radius: 0.375rem;
    border-left: 4px solid var(--accent);
}

.save-config {
    margin-top: auto;
}