/**
 * Graph View Component
 * Interactive document graph visualization with force-directed layout
 */

.graph-view {
    position: relative;
    width: 100%;
    height: 100%;
    background-color: var(--theme-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--theme-border);
    overflow: hidden;
}

.graph-view-canvas {
    display: block;
    cursor: grab;
}

.graph-view-canvas:active {
    cursor: grabbing;
}

/* Graph View Controls */
.graph-view-controls {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    gap: 0.5rem;
    z-index: 10;
}

.graph-view-controls .btn {
    min-width: auto;
    padding: 0.5rem 0.75rem;
    font-size: 0.8125rem;
    background-color: var(--theme-surface);
    border: 1px solid var(--theme-border);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.graph-view-controls .btn:hover {
    background-color: var(--theme-bg);
    transform: translateY(-1px);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.15);
}

/* Graph View Info Panel */
.graph-view-info {
    position: absolute;
    bottom: 1rem;
    left: 1rem;
    padding: 0.75rem 1rem;
    background-color: var(--theme-surface);
    border: 1px solid var(--theme-border);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    z-index: 10;
    font-size: 0.8125rem;
    color: var(--theme-text-secondary);
}

.graph-view-info-item {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.25rem;
}

.graph-view-info-item:last-child {
    margin-bottom: 0;
}

.graph-view-info-label {
    font-weight: 600;
    color: var(--theme-text-primary);
}

.graph-view-info-value {
    font-family: "SF Mono", Monaco, "Cascadia Code", monospace;
    color: var(--theme-accent);
}

/* Node Detail Panel */
.graph-view-detail {
    position: absolute;
    top: 1rem;
    left: 1rem;
    max-width: 300px;
    padding: 1rem;
    background-color: var(--theme-surface);
    border: 1px solid var(--theme-border);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 20;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-0.5rem);
    transition: all var(--transition-speed);
}

.graph-view-detail.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.graph-view-detail-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--theme-text-primary);
    margin-bottom: 0.5rem;
}

.graph-view-detail-tags {
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.graph-view-detail-tag {
    padding: 0.125rem 0.5rem;
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--theme-text-secondary);
    background-color: var(--theme-bg);
    border-radius: calc(var(--border-radius) / 2);
    border: 1px solid var(--theme-border);
}

.graph-view-detail-close {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    padding: 0.25rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--theme-text-secondary);
    transition: color var(--transition-speed);
}

.graph-view-detail-close:hover {
    color: var(--theme-text-primary);
}

/* Loading State */
.graph-view-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 1rem 1.5rem;
    background-color: var(--theme-surface);
    border: 1px solid var(--theme-border);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 30;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
    color: var(--theme-text-primary);
}

.graph-view-loading-spinner {
    width: 1rem;
    height: 1rem;
    border: 2px solid var(--theme-border);
    border-top-color: var(--theme-accent);
    border-radius: 50%;
    animation: graph-view-spin 0.8s linear infinite;
}

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

/* Progress Bar */
.graph-view-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background-color: var(--theme-border);
    z-index: 30;
}

.graph-view-progress-bar {
    height: 100%;
    background-color: var(--theme-accent);
    transition: width 0.1s ease-out;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .graph-view-controls {
        top: 0.5rem;
        right: 0.5rem;
        flex-direction: column;
    }

    .graph-view-info {
        bottom: 0.5rem;
        left: 0.5rem;
        padding: 0.5rem 0.75rem;
        font-size: 0.75rem;
    }

    .graph-view-detail {
        top: 0.5rem;
        left: 0.5rem;
        right: 0.5rem;
        max-width: none;
    }
}

/* Hover Tooltip - Monochrome Edge Style (Sharp, Minimal, Edgy) */
.graph-node-tooltip {
    position: absolute;
    background: var(--theme-surface);
    border: 1px solid var(--theme-border);
    border-left: 2px solid var(--theme-accent);
    padding: 0.75rem;
    max-width: 320px;
    z-index: 1000;
    pointer-events: none;
    /* Sharp edges - no rounded corners */
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    font-size: 0.75rem;
    line-height: 1.4;
}

.graph-node-tooltip-title {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--theme-text-primary);
    margin-bottom: 0.5rem;
    border-bottom: 1px solid var(--theme-border);
    padding-bottom: 0.375rem;
    letter-spacing: -0.01em;
}

.graph-node-tooltip-section {
    margin-bottom: 0.5rem;
    padding-left: 0.5rem;
    border-left: 1px solid var(--theme-border);
}

.graph-node-tooltip-section:last-child {
    margin-bottom: 0;
}

.graph-node-tooltip-label {
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--theme-text-secondary);
    margin-bottom: 0.25rem;
    opacity: 0.8;
}

.graph-node-tooltip-value {
    color: var(--theme-text-primary);
    font-size: 0.6875rem;
    font-weight: 500;
    line-height: 1.5;
}

.graph-node-tooltip-tags {
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
    margin-top: 0.25rem;
}

.graph-node-tooltip-tag {
    padding: 0.125rem 0.375rem;
    font-size: 0.625rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--theme-text-secondary);
    background-color: var(--theme-bg);
    /* Sharp edges */
    border: 1px solid var(--theme-border);
}

.graph-node-tooltip-links {
    font-size: 0.6875rem;
    color: var(--theme-text-primary);
    margin-top: 0.25rem;
    font-weight: 500;
}

.graph-node-tooltip-link {
    display: block;
    color: var(--theme-accent);
    text-decoration: none;
    padding: 0.125rem 0;
    font-weight: 500;
}

.graph-node-tooltip-content {
    max-height: 80px;
    overflow-y: auto;
    margin-top: 0.25rem;
    padding: 0.375rem 0.5rem;
    background-color: var(--theme-bg);
    /* Sharp edges */
    border: 1px solid var(--theme-border);
    font-size: 0.625rem;
    line-height: 1.6;
    color: var(--theme-text-secondary);
    font-weight: 400;
    scrollbar-width: thin;
}

.graph-node-tooltip-content::-webkit-scrollbar {
    width: 3px;
}

.graph-node-tooltip-content::-webkit-scrollbar-track {
    background: var(--theme-bg);
}

.graph-node-tooltip-content::-webkit-scrollbar-thumb {
    background: var(--theme-border);
}

/* Empty State */
.graph-view-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--theme-text-secondary);
    text-align: center;
    padding: 2rem;
}

.graph-view-empty-icon {
    width: 3rem;
    height: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.graph-view-empty-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--theme-text-primary);
    margin-bottom: 0.5rem;
}

.graph-view-empty-description {
    font-size: 0.875rem;
    max-width: 400px;
}