/**
 * Browse - Object Relationship Graph Styles
 *
 * Lane-based SVG graph visualization for exploring connected
 * internet infrastructure objects.
 */

/* ── Color tokens by object type ── */
:root {
    --browse-domain: #0ea5e9;
    --browse-hostname: #2dd4bf;
    --browse-ip: #f59e0b;
    --browse-network: #f97316;
    --browse-asn: #a78bfa;
    --browse-tld: #34d399;
    --browse-registrar: #fb7185;
    --browse-grid-dot: rgba(0, 0, 0, 0.06);
    --browse-edge: rgba(0, 0, 0, 0.15);
    --browse-edge-label: var(--text-muted);
    --browse-node-bg: var(--bg-primary);
    --browse-node-border: var(--border);
    --browse-node-text: var(--text-primary);
    --browse-node-sub: var(--text-secondary);
    --browse-detail-bg: var(--bg-secondary);
    --browse-expand-pulse: rgba(255, 255, 255, 0.3);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --browse-domain: #00d4ff;
        --browse-hostname: #2dd4bf;
        --browse-ip: #fbbf24;
        --browse-network: #fb923c;
        --browse-asn: #c4b5fd;
        --browse-tld: #34d399;
        --browse-registrar: #fda4af;
        --browse-grid-dot: rgba(255, 255, 255, 0.04);
        --browse-edge: rgba(255, 255, 255, 0.12);
        --browse-expand-pulse: rgba(255, 255, 255, 0.15);
    }
}

:root[data-theme="dark"] {
    --browse-domain: #00d4ff;
    --browse-hostname: #2dd4bf;
    --browse-ip: #fbbf24;
    --browse-network: #fb923c;
    --browse-asn: #c4b5fd;
    --browse-tld: #34d399;
    --browse-registrar: #fda4af;
    --browse-grid-dot: rgba(255, 255, 255, 0.04);
    --browse-edge: rgba(255, 255, 255, 0.12);
    --browse-expand-pulse: rgba(255, 255, 255, 0.15);
}

/* ── Search form ── */
.browse-search {
    padding: 1rem 1.25rem;
}

.browse-search-form {
    display: flex;
    gap: 0.5rem;
    align-items: stretch;
}

.browse-input {
    flex: 1;
    padding: 0.6rem 0.8rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.95rem;
}

.browse-input:focus {
    outline: 2px solid var(--accent);
    outline-offset: -1px;
    border-color: var(--accent);
}

.browse-select {
    padding: 0.6rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.85rem;
    min-width: 8rem;
}

.browse-submit {
    padding: 0.6rem 1.2rem;
    border: 1px solid var(--accent);
    border-radius: var(--radius-sm);
    background: var(--accent);
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
}

.browse-submit:hover {
    background: var(--accent-hover);
}

/* ── Error message ── */
.browse-error {
    margin: 0.75rem 0;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    background: var(--error-bg);
    color: var(--error);
    font-size: 0.9rem;
}

/* ── Loading state ── */
.browse-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

.browse-spinner {
    width: 28px;
    height: 28px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: browse-spin 0.7s linear infinite;
}

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

/* ── Viewport ── */
.browse-viewport {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--bg-primary);
    position: relative;
}

.browse-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.4rem 0.6rem;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
    gap: 0.5rem;
}

.browse-toolbar-left,
.browse-toolbar-right {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.browse-tool-btn {
    padding: 0.2rem 0.55rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.85rem;
    cursor: pointer;
    line-height: 1.4;
}

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

/* Discover More button - accent style */
.browse-discover-btn {
    background: var(--accent-bg);
    color: var(--accent);
    border-color: var(--accent);
    font-weight: 600;
    padding: 0.2rem 0.7rem;
}

.browse-discover-btn:hover:not(:disabled) {
    background: var(--accent);
    color: #fff;
}

.browse-discover-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.browse-discover-btn.discovering {
    animation: browse-spin 1s linear infinite;
}

/* Discovery stats toast */
.browse-discover-toast {
    position: absolute;
    top: 3rem;
    right: 0.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--accent);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.8rem;
    font-size: 0.82rem;
    color: var(--text-primary);
    z-index: 50;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    animation: browse-toast-in 0.3s ease;
}

@keyframes browse-toast-in {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.browse-stat {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.browse-svg-container {
    overflow: auto;
    height: 500px;
    cursor: grab;
}

.browse-svg-container:active {
    cursor: grabbing;
}

#browse-svg {
    min-width: 100%;
    min-height: 100%;
}

/* ── SVG Nodes ── */
.browse-node {
    cursor: pointer;
}

.browse-node:hover .browse-node-rect {
    filter: brightness(1.1);
}

.browse-node:focus {
    outline: none;
}

.browse-node:focus .browse-node-rect {
    stroke: var(--accent);
    stroke-width: 2.5;
}

.browse-node-rect {
    rx: 6;
    ry: 6;
    stroke-width: 1.5;
    transition: filter 0.15s;
}

.browse-node-label {
    font-family: var(--font-mono);
    font-size: 12px;
    fill: var(--browse-node-text);
    pointer-events: none;
}

.browse-node-sublabel {
    font-size: 10px;
    fill: var(--browse-node-sub);
    pointer-events: none;
}

.browse-node-type-icon {
    font-size: 10px;
    font-weight: 700;
    pointer-events: none;
}

/* ── Expand button (+) on expandable nodes ── */
.browse-expand-btn {
    cursor: pointer;
}

.browse-expand-circle {
    stroke-width: 1.5;
    transition: fill 0.15s;
}

.browse-expand-btn:hover .browse-expand-circle {
    fill-opacity: 0.3;
}

.browse-expand-plus {
    font-size: 12px;
    font-weight: 700;
    pointer-events: none;
}

/* Pulse animation for expandable nodes */
@keyframes browse-pulse {
    0%, 100% { r: 8; opacity: 1; }
    50% { r: 10; opacity: 0.7; }
}

.browse-expand-pulse {
    animation: browse-pulse 2s ease-in-out infinite;
    fill: var(--browse-expand-pulse);
}

/* ── SVG Edges ── */
.browse-edge {
    fill: none;
    stroke: var(--browse-edge);
    stroke-width: 1.2;
}

.browse-edge-label {
    font-size: 9px;
    fill: var(--browse-edge-label);
    text-anchor: start;
}

/* ── Node colors by type (stroke accent) ── */
.browse-node[data-type="domain"] .browse-node-rect { fill: var(--browse-node-bg); stroke: var(--browse-domain); }
.browse-node[data-type="hostname"] .browse-node-rect { fill: var(--browse-node-bg); stroke: var(--browse-hostname); }
.browse-node[data-type="ip"] .browse-node-rect { fill: var(--browse-node-bg); stroke: var(--browse-ip); }
.browse-node[data-type="network"] .browse-node-rect { fill: var(--browse-node-bg); stroke: var(--browse-network); }
.browse-node[data-type="asn"] .browse-node-rect { fill: var(--browse-node-bg); stroke: var(--browse-asn); }
.browse-node[data-type="tld"] .browse-node-rect { fill: var(--browse-node-bg); stroke: var(--browse-tld); }
.browse-node[data-type="registrar"] .browse-node-rect { fill: var(--browse-node-bg); stroke: var(--browse-registrar); }

.browse-node[data-type="domain"] .browse-node-type-icon { fill: var(--browse-domain); }
.browse-node[data-type="hostname"] .browse-node-type-icon { fill: var(--browse-hostname); }
.browse-node[data-type="ip"] .browse-node-type-icon { fill: var(--browse-ip); }
.browse-node[data-type="network"] .browse-node-type-icon { fill: var(--browse-network); }
.browse-node[data-type="asn"] .browse-node-type-icon { fill: var(--browse-asn); }
.browse-node[data-type="tld"] .browse-node-type-icon { fill: var(--browse-tld); }
.browse-node[data-type="registrar"] .browse-node-type-icon { fill: var(--browse-registrar); }

/* Expand button stroke matches type */
.browse-node[data-type="domain"] .browse-expand-circle { stroke: var(--browse-domain); fill: var(--browse-domain); fill-opacity: 0.15; }
.browse-node[data-type="hostname"] .browse-expand-circle { stroke: var(--browse-hostname); fill: var(--browse-hostname); fill-opacity: 0.15; }
.browse-node[data-type="ip"] .browse-expand-circle { stroke: var(--browse-ip); fill: var(--browse-ip); fill-opacity: 0.15; }
.browse-node[data-type="network"] .browse-expand-circle { stroke: var(--browse-network); fill: var(--browse-network); fill-opacity: 0.15; }
.browse-node[data-type="asn"] .browse-expand-circle { stroke: var(--browse-asn); fill: var(--browse-asn); fill-opacity: 0.15; }
.browse-node[data-type="tld"] .browse-expand-circle { stroke: var(--browse-tld); fill: var(--browse-tld); fill-opacity: 0.15; }
.browse-node[data-type="registrar"] .browse-expand-circle { stroke: var(--browse-registrar); fill: var(--browse-registrar); fill-opacity: 0.15; }

.browse-node[data-type="domain"] .browse-expand-plus { fill: var(--browse-domain); }
.browse-node[data-type="hostname"] .browse-expand-plus { fill: var(--browse-hostname); }
.browse-node[data-type="ip"] .browse-expand-plus { fill: var(--browse-ip); }
.browse-node[data-type="network"] .browse-expand-plus { fill: var(--browse-network); }
.browse-node[data-type="asn"] .browse-expand-plus { fill: var(--browse-asn); }
.browse-node[data-type="tld"] .browse-expand-plus { fill: var(--browse-tld); }
.browse-node[data-type="registrar"] .browse-expand-plus { fill: var(--browse-registrar); }

/* Root node highlight */
.browse-node.browse-root .browse-node-rect {
    stroke-width: 2.5;
}

/* ── Detail panel ── */
.browse-detail {
    position: fixed;
    top: 0;
    right: 0;
    width: 360px;
    height: 100vh;
    background: var(--browse-detail-bg);
    border-left: 1px solid var(--border);
    box-shadow: -4px 0 16px rgba(0, 0, 0, 0.1);
    z-index: 100;
    transform: translateX(100%);
    transition: transform 0.25s ease;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.browse-detail.open {
    transform: translateX(0);
    display: flex;
}

.browse-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
    min-height: 3.5rem;
}

.browse-detail-header h3 {
    font-size: 1rem;
    font-family: var(--font-mono);
    color: var(--text-primary);
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.browse-detail-close {
    background: none;
    border: none;
    font-size: 1.4rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.2rem 0.4rem;
    line-height: 1;
}

.browse-detail-close:hover {
    color: var(--text-primary);
}

.browse-detail-body {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 1.25rem;
}

.browse-detail-row {
    display: flex;
    justify-content: space-between;
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--border);
    gap: 0.5rem;
}

.browse-detail-key {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    flex-shrink: 0;
}

.browse-detail-val {
    font-size: 0.85rem;
    color: var(--text-primary);
    font-family: var(--font-mono);
    text-align: right;
    word-break: break-all;
}

.browse-detail-footer {
    padding: 0.75rem 1.25rem;
    border-top: 1px solid var(--border);
}

.browse-detail-footer .action-btn {
    display: block;
    text-align: center;
}

/* ── Legend ── */
.browse-legend {
    margin-top: 1rem;
}

.browse-legend-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.25rem;
    padding: 0.75rem 1rem;
}

.browse-legend-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.browse-legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* ── Screen reader only ── */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .browse-search-form {
        flex-wrap: wrap;
    }

    .browse-input {
        flex-basis: 100%;
    }

    .browse-select {
        flex: 1;
    }

    .browse-submit {
        flex: 1;
    }

    .browse-svg-container {
        height: 400px;
    }

    /* Detail panel becomes bottom sheet on mobile */
    .browse-detail {
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        width: 100%;
        height: 50vh;
        border-left: none;
        border-top: 1px solid var(--border);
        box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.1);
        transform: translateY(100%);
    }

    .browse-detail.open {
        transform: translateY(0);
    }
}