/* ============================================
   Wasp Demo - Stylesheet
   ============================================ */

/* Reset & Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-bg: #101020;
    --color-surface: #16213e;
    --color-primary: #0f3460;
    --color-accent: #e94560;
    --color-text: #eaeaea;
    --color-text-muted: #a0a0a0;
    --color-border: #2a2a4a;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --transition: 0.2s ease;
}

html, body {
    height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.5rem 2rem 0rem 2rem;
    min-height: 100%;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--color-accent), #ff6b6b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--color-text-muted);
    font-size: 1.1rem;
}

/* Toolbar: Image Selection */
.toolbar-section {
    margin-bottom: 2rem;
}

.toolbar-panel {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    padding: 0.5rem 1.25rem;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toolbar-panel h3 {
    margin-bottom: 0.15rem;
    font-size: 1rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.toolbar-content {
    display: grid;
    grid-template-columns: minmax(240px, 2.5fr) minmax(160px, 1fr);
    gap: 1rem;
    align-items: stretch;
}

.upload-container {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: 0.25rem 0.5rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background-color: var(--color-bg);
    min-height: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Built-in image selector */
.builtin-selector {
    display: flex;
    flex-wrap: nowrap;
    gap: 0.4rem;
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 0.15rem; /* visually separate from upload box */
    min-height: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background-color: rgba(0,0,0,0.02);
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: thin;
    align-items: center;
}

.builtin-thumb {
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 2px;
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.builtin-thumb img {
    display: block;
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.builtin-thumb:focus {
    outline: 2px solid var(--color-accent);
    box-shadow: 0 0 0 4px rgba(233,69,96,0.08);
}

.small-upload {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.1rem;
}

.upload-container:hover,
.upload-container.drag-over {
    border-color: var(--color-accent);
    background-color: rgba(233, 69, 96, 0.1);
}

.upload-icon {
    font-size: 1.1rem;
    margin-bottom: 0;
}

.upload-text {
    font-size: 0.75rem;
    margin-bottom: 0;
}

.upload-hint {
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

/* Workspace: Preview + Settings */
.workspace-section {
    margin-bottom: 2rem;
}

.workspace-grid {
    display: grid;
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    gap: 2rem;
    align-items: start;
}

/* Preview Section */
.preview-section {
    animation: fadeIn 0.3s ease;
}

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

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.preview-panel {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.preview-panel h3 {
    margin-bottom: 1rem;
    font-size: 1rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.preview-panel canvas {
    width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    background-color: var(--color-bg);
    display: block;
}

/* Loading State */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Scene Panel */
.scene-panel {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.scene-panel h3 {
    margin-bottom: 1rem;
    font-size: 1rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.scene-container {
    width: 100%;
    height: 420px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background-color: var(--color-bg);
}

.scene-container canvas {
    display: block;
}

/* Fatal Error */
.fatal-error {
    background-color: rgba(233, 69, 96, 0.1);
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    margin-top: 4rem;
}

.fatal-error h1 {
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.fatal-error p {
    margin-bottom: 1.5rem;
    color: var(--color-text-muted);
}

.fatal-error pre {
    background-color: var(--color-bg);
    padding: 1rem;
    border-radius: var(--radius-md);
    text-align: left;
    overflow-x: auto;
    font-size: 0.85rem;
    color: var(--color-text);
}

/* Settings Panel */
.settings-panel {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.settings-panel h3 {
    margin-bottom: 1.5rem;
    font-size: 1rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 0rem;
}

.settings-actions {
    margin-top: 1rem;
    display: flex;
    justify-content: stretch;
}

.action-button {
    width: 100%;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-accent), #ff6b6b);
    color: #ffffff;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.25);
}

.action-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 18px rgba(0, 0, 0, 0.3);
}

.action-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.setting-accordion {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.5rem 0.75rem;
    background-color: rgba(0, 0, 0, 0.08);
}

.setting-accordion + .setting-accordion {
    margin-top: 0.75rem;
}

.setting-accordion summary {
    list-style: none;
    cursor: pointer;
    font-size: 0.95rem;
    color: var(--color-text);
    padding: 0.4rem 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    user-select: none;
}

.setting-accordion summary::-webkit-details-marker {
    display: none;
}

.setting-accordion summary::after {
    content: '+';
    color: var(--color-text-muted);
    font-weight: 600;
}

.setting-accordion[open] summary::after {
    content: '-';
}

.setting-accordion .setting-group {
    padding-top: 0.5rem;
}

.setting-item {
    margin-bottom: 0.25rem;
}

.setting-item:last-child {
    margin-bottom: 0;
}

.setting-item label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
    cursor: pointer;
}

.setting-item input[type="checkbox"] {
    margin-right: 0.5rem;
    cursor: pointer;
}

.input-group {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.input-group input[type="range"] {
    flex: 1;
    height: 4px;
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    outline: none;
    -webkit-appearance: none;
}

.input-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--color-accent);
    border-radius: 50%;
    cursor: pointer;
    transition: background var(--transition);
}

.input-group input[type="range"]::-webkit-slider-thumb:hover {
    background: #ff6b6b;
}

.input-group input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--color-accent);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: background var(--transition);
}

.input-group input[type="range"]::-moz-range-thumb:hover {
    background: #ff6b6b;
}

.setting-value {
    min-width: 50px;
    text-align: right;
    font-size: 0.875rem;
    color: var(--color-text);
    font-weight: 500;
}

.setting-item input[type="color"] {
    width: 100%;
    height: 40px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: transparent;
    cursor: pointer;
}

.setting-item input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 4px;
}

.setting-item input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: var(--radius-sm);
}

.setting-item input[type="color"]::-moz-color-swatch {
    border: none;
    border-radius: var(--radius-sm);
}

.setting-hint {
    display: block;
    margin-top: 0.25rem;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    font-style: italic;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    header h1 {
        font-size: 2rem;
    }

    .toolbar-content {
        grid-template-columns: 1fr;
    }

    .upload-container {
        padding: 0.5rem;
        min-height: 70px;
        height: auto;
    }

    .workspace-grid {
        grid-template-columns: 1fr;
    }

    .scene-container {
        height: 340px;
    }

    .preview-grid {
        grid-template-columns: 1fr;
    }
}