/* utf8proj Playground Styles */

:root {
    /* Light theme (default) */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #e8e8e8;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border-color: #e0e0e0;
    --accent-color: #3498db;
    --accent-hover: #2980b9;
    --success-color: #27ae60;
    --error-color: #e74c3c;
    --warning-color: #f39c12;

    /* Sizing */
    --header-height: 56px;
    --status-height: 28px;
    --panel-header-height: 40px;
    --border-radius: 6px;
}

[data-theme="dark"] {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --text-primary: #eaeaea;
    --text-secondary: #b0b0b0;
    --text-muted: #707070;
    --border-color: #2d2d44;
    --accent-color: #3498db;
    --accent-hover: #5dade2;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
}

#app {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    padding: 0 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.header-left h1 {
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.badge {
    font-size: 0.7rem;
    font-weight: 500;
    padding: 2px 8px;
    background: var(--accent-color);
    color: white;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.header-center {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Buttons */
.btn {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.btn:hover {
    background: var(--bg-tertiary);
}

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

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

.btn-small {
    padding: 4px 8px;
    font-size: 0.75rem;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    border-radius: 4px;
    cursor: pointer;
}

.btn-small:hover {
    background: var(--bg-tertiary);
}

.icon {
    margin-right: 4px;
}

/* Form elements */
select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    cursor: pointer;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.checkbox-label input {
    cursor: pointer;
}

/* Focus controls */
.focus-controls {
    display: flex;
    align-items: center;
    gap: 6px;
}

.focus-controls input[type="text"] {
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.focus-controls input[type="text"]::placeholder {
    color: var(--text-muted);
}

.focus-controls select {
    padding: 6px 8px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.75rem;
    cursor: pointer;
}

/* Main content */
.main {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Panels */
.panel {
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    overflow: hidden;
}

.editor-panel {
    flex: 1;
    min-width: 300px;
    border-right: 1px solid var(--border-color);
}

.preview-panel {
    flex: 1;
    min-width: 300px;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--panel-header-height);
    padding: 0 12px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.875rem;
    font-weight: 500;
}

.panel-tabs {
    display: flex;
    gap: 4px;
}

.tab {
    padding: 6px 12px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    border-radius: 4px;
}

.tab:hover {
    background: var(--bg-tertiary);
}

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

.panel-actions {
    display: flex;
    gap: 8px;
}

/* Editor */
.editor-container {
    flex: 1;
    overflow: hidden;
}

/* Preview */
.preview-container {
    flex: 1;
    overflow: auto;
    display: none;
}

.preview-container.active {
    display: block;
}

.gantt-wrapper {
    padding: 16px;
    height: 100%;
    overflow: auto;
}

.placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    text-align: center;
}

.placeholder p {
    margin: 8px 0;
}

.hint {
    font-size: 0.875rem;
}

kbd {
    padding: 2px 6px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.8rem;
}

.json-output {
    padding: 16px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    white-space: pre-wrap;
    word-break: break-all;
    background: var(--bg-secondary);
    margin: 0;
    height: 100%;
    overflow: auto;
}

/* Resize Handle */
.resize-handle {
    width: 6px;
    background: var(--border-color);
    cursor: col-resize;
    transition: background 0.2s;
}

.resize-handle:hover,
.resize-handle.dragging {
    background: var(--accent-color);
}

/* Status Bar */
.status-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--status-height);
    padding: 0 12px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

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

.status-bar.success {
    background: var(--success-color);
    color: white;
}

.status-left,
.status-center,
.status-right {
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-center {
    flex: 1;
    justify-content: center;
}

.status-right a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
}

.status-right a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

.status-right .version {
    font-weight: 500;
}

.status-right .separator {
    color: var(--border-color);
}

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

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

.modal-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.modal-body {
    padding: 16px;
}

.share-url-container {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.share-url-container input {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-family: monospace;
    font-size: 0.875rem;
}

/* Gantt iframe container */
.gantt-wrapper iframe {
    border: none;
    width: 100%;
    height: 100%;
    min-height: 400px;
}

/* Excel Options Panel (RFC-0018 Phase 4) */
.excel-options {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 16px;
    font-size: 13px;
}

.excel-options.hidden {
    display: none;
}

.option-group {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.option-group:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.option-group-title {
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.option-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    margin: 6px 0;
}

.option-row label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    color: var(--text-primary);
}

.option-row input[type="number"],
.option-row select {
    width: 80px;
    padding: 4px 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 12px;
}

.option-row input[type="number"]:focus,
.option-row select:focus {
    outline: none;
    border-color: var(--accent-color);
}

.option-hint {
    font-size: 11px;
    color: var(--text-secondary);
    font-style: italic;
    margin-top: 4px;
    padding-left: 2px;
}

#excel-options-btn {
    font-size: 14px;
    padding: 4px 8px;
}

#excel-options-btn.active {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* Error display */
.error-display {
    padding: 16px;
    background: #fff5f5;
    border: 1px solid var(--error-color);
    border-radius: var(--border-radius);
    color: var(--error-color);
    margin: 16px;
}

[data-theme="dark"] .error-display {
    background: #2d1f1f;
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        flex-wrap: wrap;
        height: auto;
        padding: 8px;
        gap: 8px;
    }

    .header-left,
    .header-center,
    .header-right {
        width: 100%;
        justify-content: center;
    }

    .main {
        flex-direction: column;
    }

    .resize-handle {
        width: 100%;
        height: 6px;
        cursor: row-resize;
    }

    .editor-panel,
    .preview-panel {
        min-height: 200px;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
}