/* Developer Tools Panel — gated behind ?dev=1 or Ctrl+Shift+D */

#dev-tools-panel {
    position: fixed;
    top: 16px;
    right: 16px;
    width: 480px;
    max-width: calc(100vw - 32px);
    max-height: calc(100vh - 32px);
    display: flex;
    flex-direction: column;
    background: rgba(8, 8, 10, 0.97);
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    font-family: var(--font-mono);
    color: var(--text-primary);
    font-size: 12px;
    z-index: 99999;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.6);
    box-sizing: border-box;
}

/* Every element inside the panel inherits border-box so 100%-w */
#dev-tools-panel, #dev-tools-panel *, #dev-tools-panel *::before, #dev-tools-panel *::after {
    box-sizing: border-box;
}

/* Redesign: instead of one long single-file accordion (11 sect */
.dev-tools-body {
    overflow-y: auto;
    overflow-x: hidden;
    flex: 1;
    column-count: 2;
    column-gap: 0;
    column-rule: 1px solid var(--border-subtle);
    column-fill: balance;
}

@media (max-width: 640px) {
    #dev-tools-panel { width: calc(100vw - 32px); }
    .dev-tools-body { column-count: 1; }
}

.dev-tools-fb-indicator {
    background: none;
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 10px;
    padding: 3px 6px;
    border-radius: 2px;
    cursor: pointer;
    white-space: nowrap;
}

.dev-tools-fb-indicator:hover {
    border-color: var(--accent-blue);
}

.dev-tools-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 6px;
    padding: 8px 10px;
    border-bottom: 1px solid var(--border-subtle);
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--accent-blue);
    flex-shrink: 0;
}

.dev-tools-header button {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 16px;
    line-height: 1;
    cursor: pointer;
    padding: 0 4px;
}

.dev-tools-section {
    padding: 10px;
    border-bottom: 1px solid var(--border-subtle);
    break-inside: avoid;
    -webkit-column-break-inside: avoid;
    overflow-x: hidden;
}

.dev-tools-section:last-of-type {
    border-bottom: none;
}

.dev-tools-label {
    display: block;
    color: var(--text-secondary, #999);
    text-transform: uppercase;
    font-size: 10px;
    letter-spacing: 1px;
    margin-bottom: 6px;
    cursor: pointer;
    list-style: none;
}

.dev-tools-label::-webkit-details-marker { display: none; }

.dev-tools-label::before {
    content: '▸';
    display: inline-block;
    margin-right: 4px;
    transition: transform 150ms ease;
}

details[open] > .dev-tools-label::before {
    transform: rotate(90deg);
}

.dev-tools-section > *:not(.dev-tools-label) {
    margin-top: 6px;
}

.dev-tools-kv-row {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    padding: 3px 0;
    font-size: 11px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.dev-tools-kv-row span:first-child {
    color: var(--text-secondary, #999);
    flex-shrink: 0;
}

.dev-tools-kv-row span:last-child {
    min-width: 0;
    overflow-wrap: anywhere;
    text-align: right;
}

.dev-tools-textarea {
    display: block;
    width: 100%;
    max-width: 100%;
    height: 140px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 10px;
    padding: 6px;
    resize: vertical;
    overflow-wrap: anywhere;
}

.dev-tools-log {
    max-height: 160px;
    overflow-y: auto;
    overflow-x: hidden;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-subtle);
    padding: 4px 6px;
    font-size: 10px;
}

.dev-tools-log-row {
    padding: 2px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    overflow-wrap: anywhere;
    word-break: break-word;
}

.dev-tools-log-time {
    color: var(--text-secondary, #999);
    margin-right: 6px;
}

.dev-tools-log-warn { color: var(--status-warning); }
.dev-tools-log-error { color: var(--status-error); }
.dev-tools-log-empty {
    color: var(--text-secondary, #999);
    font-style: italic;
    padding: 4px 0;
}

.dev-tools-case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(46px, 1fr));
    gap: 4px;
}

.dev-tools-case-btn {
    padding: 6px 0;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.dev-tools-btn {
    display: block;
    width: 100%;
    max-width: 100%;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 7px 8px;
    margin-bottom: 6px;
    cursor: pointer;
    border-radius: 2px;
    overflow-wrap: anywhere;
    transition: background 150ms ease, border-color 150ms ease;
}

.dev-tools-btn:last-child {
    margin-bottom: 0;
}

.dev-tools-btn:hover {
    background: rgba(74, 144, 226, 0.15);
    border-color: var(--accent-blue);
}

.dev-tools-btn-danger:hover {
    background: rgba(226, 74, 74, 0.15);
    border-color: var(--status-error, #e24a4a);
}

.dev-tools-footer {
    padding: 8px 10px;
    font-size: 10px;
    color: var(--text-secondary, #999);
    flex-shrink: 0;
    border-top: 1px solid var(--border-subtle);
}