/**
 * mdbook-excalidraw styles
 * Styles for Excalidraw diagram containers and controls
 */

/* Main container */
.excalidraw-wrapper {
    margin: 2rem 0;
    border: 1px solid var(--sidebar-bg, #ddd);
    border-radius: 8px;
    overflow: hidden;
    background: transparent;
    position: relative;
}

/* Diagram container */
.excalidraw-container {
    padding: 2rem;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    background: transparent;
    overflow: auto;
}

/* Zoom wrapper */
.excalidraw-zoom-wrapper {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.2s ease;
    transform-origin: center center;
}

/* Zoom controls - positioned in top-right corner */
.excalidraw-zoom-controls {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.4rem 0.5rem;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    opacity: 0.6;
    transition: opacity 0.3s ease;
    z-index: 10;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.excalidraw-zoom-controls:hover {
    opacity: 1;
}

.excalidraw-zoom-btn {
    width: 24px;
    height: 24px;
    padding: 0;
    background: transparent;
    border: 1px solid rgba(0, 0, 0, 0.15);
    border-radius: 3px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    color: var(--fg, #333);
}

.excalidraw-zoom-btn:hover {
    background: rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.25);
}

.excalidraw-zoom-btn:active {
    transform: scale(0.95);
}

.excalidraw-zoom-level {
    min-width: 38px;
    text-align: center;
    font-weight: 500;
    font-size: 11px;
    color: var(--fg, #555);
    user-select: none;
}

/* SVG preview */
.excalidraw-svg {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

/* Loading state */
.excalidraw-loading {
    padding: 3rem;
    text-align: center;
    color: var(--fg, #333);
    font-style: italic;
}

.excalidraw-loading::before {
    content: '⏳ ';
    font-size: 1.5em;
}

/* Error state */
.excalidraw-error {
    padding: 1.5rem;
    background: #fff3cd;
    border: 1px solid #ffc107;
    border-radius: 4px;
    color: #856404;
}

.excalidraw-error strong {
    display: block;
    margin-bottom: 0.5rem;
    color: #dc3545;
}

.excalidraw-error pre {
    background: #fff;
    padding: 0.75rem;
    border-radius: 4px;
    overflow-x: auto;
    margin: 0.5rem 0;
    font-size: 0.875rem;
}

.excalidraw-error details {
    margin-top: 1rem;
}

.excalidraw-error summary {
    cursor: pointer;
    font-weight: bold;
    user-select: none;
}

.excalidraw-error summary:hover {
    text-decoration: underline;
}

/* Mermaid preview */
.mermaid-preview {
    padding: 1rem;
    background: var(--code-bg, #f8f9fa);
    border: 1px solid var(--sidebar-bg, #ddd);
    border-radius: 4px;
    font-family: 'Source Code Pro', Consolas, monospace;
    font-size: 0.875rem;
    white-space: pre-wrap;
    overflow-x: auto;
}

/* Source code toggle */
.excalidraw-source {
    border-top: 1px solid var(--sidebar-bg, #ddd);
    padding: 0.5rem;
    background: transparent;
}

.excalidraw-source summary {
    cursor: pointer;
    font-weight: 400;
    font-size: 13px;
    color: var(--fg, #666);
    user-select: none;
    padding: 0.25rem 0.5rem;
    list-style: none;
}

.excalidraw-source summary::-webkit-details-marker {
    display: none;
}

.excalidraw-source summary::before {
    content: '▶ ';
    display: inline-block;
    transition: transform 0.15s;
    font-size: 10px;
}

.excalidraw-source[open] summary::before {
    transform: rotate(90deg);
}

.excalidraw-source summary:hover {
    color: var(--fg, #333);
}

.excalidraw-source pre {
    margin: 0.5rem 0 0 0;
    padding: 0.5rem;
    background: var(--code-bg, #f5f5f5);
    border: 1px solid var(--sidebar-bg, #ddd);
    border-radius: 2px;
    overflow-x: auto;
    max-width: 600px;
}

.excalidraw-source code {
    font-family: monospace;
    font-size: 11px;
    line-height: 1.4;
}

/* Modal */
.excalidraw-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 1rem;
}

.excalidraw-modal-content {
    background: var(--bg, #fff);
    border-radius: 8px;
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.excalidraw-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--sidebar-bg, #ddd);
}

.excalidraw-modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--fg, #333);
}

.excalidraw-modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--fg, #666);
    padding: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: background 0.2s ease;
}

.excalidraw-modal-close:hover {
    background: var(--sidebar-bg, #f0f0f0);
}

.excalidraw-modal-body {
    padding: 1.5rem;
    overflow-y: auto;
}

.excalidraw-modal-body pre {
    background: var(--code-bg, #f8f9fa);
    padding: 1rem;
    border-radius: 4px;
    overflow-x: auto;
    border: 1px solid var(--sidebar-bg, #ddd);
}

.excalidraw-modal-body code {
    font-family: 'Source Code Pro', Consolas, 'Ubuntu Mono', Menlo, 'DejaVu Sans Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.5;
}

/* Dark theme support */
@media (prefers-color-scheme: dark) {
    .excalidraw-wrapper {
        border-color: #444;
    }

    .excalidraw-loading {
        color: #e0e0e0;
    }

    .excalidraw-source {
        background: transparent;
    }

    .excalidraw-source summary {
        color: #aaa;
    }

    .excalidraw-source summary:hover {
        color: #e0e0e0;
    }

    .excalidraw-source pre {
        background: #2a2a2a;
        border-color: #444;
    }

    .excalidraw-modal-content {
        background: #1a1a1a;
    }

    .excalidraw-modal-header {
        border-color: #444;
    }

    .excalidraw-modal-close:hover {
        background: #2a2a2a;
    }

    /* Dark mode zoom controls */
    .excalidraw-zoom-controls {
        background: rgba(50, 50, 50, 0.7);
        border-color: rgba(255, 255, 255, 0.15);
    }

    .excalidraw-zoom-btn {
        color: #e0e0e0;
        border-color: rgba(255, 255, 255, 0.2);
    }

    .excalidraw-zoom-btn:hover {
        background: rgba(255, 255, 255, 0.1);
        border-color: rgba(255, 255, 255, 0.3);
    }

    .excalidraw-zoom-level {
        color: #e0e0e0;
    }
}

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

    .excalidraw-modal {
        padding: 0;
    }

    .excalidraw-modal-content {
        max-width: 100%;
        max-height: 100vh;
        border-radius: 0;
    }
}

/* Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.excalidraw-modal {
    animation: fadeIn 0.2s ease;
}