/* Network Request Analyzer - Mobile-first */

:root {
    --nra-accent: #0d9488;
    --nra-accent-hover: #0f766e;
    --nra-stop: #dc2626;
    --nra-stop-hover: #b91c1c;
    --nra-border: #e5e7eb;
    --nra-bg: #f8fafc;
    --nra-surface: #ffffff;
    --nra-text: #1e293b;
    --nra-muted: #64748b;
    --nra-success: #059669;
    --nra-error: #dc2626;
    --nra-radius: 12px;
    --nra-radius-sm: 8px;
    --nra-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    --nra-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* Tool wrapper */
.nra-tool {
    margin-bottom: 2rem;
}

.nra-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Request bar - primary control strip */
.nra-request-bar {
    background: var(--nra-surface);
    border: 1px solid var(--nra-border);
    border-radius: var(--nra-radius);
    box-shadow: var(--nra-shadow);
    padding: 0.75rem;
    margin-bottom: 1rem;
}

.nra-request-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: stretch;
}

.nra-url-input {
    flex: 1;
    min-width: 0;
    padding: 0.625rem 0.875rem;
    font-size: 0.9375rem;
    
    border: 1px solid var(--nra-border);
    border-radius: var(--nra-radius-sm);
    background: var(--nra-surface);
    color: var(--nra-text);
}

.nra-url-input::placeholder {
    color: var(--nra-muted);
}

.nra-url-input:focus {
    outline: none;
    border-color: var(--nra-accent);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

.nra-method-wrap {
    flex-shrink: 0;
}

.nra-method-select {
    padding: 0.625rem 0.875rem;
    font-size: 0.9375rem;
    border: 1px solid var(--nra-border);
    border-radius: var(--nra-radius-sm);
    background: var(--nra-surface);
    color: var(--nra-text);
    min-width: 6rem;
    cursor: pointer;
}

.nra-method-select:focus {
    outline: none;
    border-color: var(--nra-accent);
}

.nra-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.nra-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.625rem 1rem;
    font-size: 0.9375rem;
    font-weight: 500;
    border: none;
    border-radius: var(--nra-radius-sm);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    min-height: 44px;
}

.nra-btn:focus-visible {
    outline: 2px solid var(--nra-accent);
    outline-offset: 2px;
}

.nra-btn-primary {
    background: var(--nra-accent);
    color: #fff;
}

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

.nra-btn-stop {
    background: var(--nra-stop);
    color: #fff;
}

.nra-btn-stop:hover {
    background: var(--nra-stop-hover);
}

.nra-btn-ghost {
    background: transparent;
    color: var(--nra-muted);
}

.nra-btn-ghost:hover {
    background: var(--nra-bg);
    color: var(--nra-text);
}

.nra-btn-icon {
    font-size: 0.75rem;
}

@media (max-width: 479px) {
    .nra-request-row {
        flex-direction: column;
    }

    .nra-url-input {
        width: 100%;
    }

    .nra-method-wrap {
        width: 100%;
    }

    .nra-method-select {
        width: 100%;
    }

    .nra-actions {
        width: 100%;
        justify-content: stretch;
    }

    .nra-btn {
        flex: 1;
        justify-content: center;
    }
}

/* Advanced options (details/summary) */
.nra-advanced {
    background: var(--nra-surface);
    border: 1px solid var(--nra-border);
    border-radius: var(--nra-radius);
    box-shadow: var(--nra-shadow);
    margin-bottom: 1rem;
}

.nra-advanced-summary {
    padding: 0.875rem 1rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--nra-text);
    cursor: pointer;
    list-style: none;
    user-select: none;
}

.nra-advanced-summary::-webkit-details-marker {
    display: none;
}

.nra-advanced-summary::before {
    content: "";
    display: inline-block;
    width: 0;
    height: 0;
    margin-right: 0.5rem;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid var(--nra-muted);
    vertical-align: middle;
    transition: transform 0.2s;
}

.nra-advanced[open] .nra-advanced-summary::before {
    transform: rotate(90deg);
    border-left-color: var(--nra-muted);
    border-top-color: transparent;
}

.nra-advanced-inner {
    padding: 0 1rem 1rem;
    border-top: 1px solid var(--nra-border);
}

.nra-fields {
    padding-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.nra-field {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.nra-field-sm .nra-input {
    max-width: 8rem;
}

.nra-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--nra-text);
}

.nra-input,
.nra-textarea {
    padding: 0.5rem 0.75rem;
    font-size: 0.9375rem;
    border: 1px solid var(--nra-border);
    border-radius: var(--nra-radius-sm);
    background: var(--nra-surface);
    color: var(--nra-text);
}

.nra-textarea {
    resize: vertical;
    min-height: 4rem;
}

.nra-mono {
    
}

.nra-input:focus,
.nra-textarea:focus {
    outline: none;
    border-color: var(--nra-accent);
}

.nra-row-sm {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.nra-check-group {
    border: none;
    padding: 0;
    margin: 0;
}

.nra-check-group .nra-label {
    margin-bottom: 0.5rem;
    display: block;
}

.nra-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    color: var(--nra-text);
    cursor: pointer;
    margin-bottom: 0.375rem;
}

.nra-check input {
    width: 1.125rem;
    height: 1.125rem;
    accent-color: var(--nra-accent);
}

/* Metrics strip */
.nra-metrics-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding: 0.75rem 0;
}

.nra-metric {
    flex: 1;
    min-width: 80px;
    padding: 0.75rem 1rem;
    background: var(--nra-surface);
    border: 1px solid var(--nra-border);
    border-radius: var(--nra-radius-sm);
    box-shadow: var(--nra-shadow);
    text-align: center;
}

.nra-metric-value {
    display: block;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--nra-accent);
    line-height: 1.2;
}

.nra-metric-errors {
    color: var(--nra-error);
}

.nra-metric-label {
    font-size: 0.75rem;
    color: var(--nra-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

@media (max-width: 479px) {
    .nra-metrics-strip {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 0.5rem;
        -webkit-overflow-scrolling: touch;
    }

    .nra-metric {
        min-width: 72px;
        flex-shrink: 0;
    }
}

/* Results card */
.nra-results-card {
    background: var(--nra-surface);
    border: 1px solid var(--nra-border);
    border-radius: var(--nra-radius);
    box-shadow: var(--nra-shadow-md);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.nra-results-head {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--nra-border);
    background: var(--nra-bg);
}

.nra-results-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
    color: var(--nra-text);
}

.nra-results-actions {
    display: flex;
    gap: 0.5rem;
}

.nra-results-body {
    min-height: 200px;
    max-height: 420px;
    overflow-y: auto;
    padding: 1rem;
}

.nra-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 180px;
    text-align: center;
    color: var(--nra-muted);
    font-size: 0.9375rem;
}

.nra-empty-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 0.75rem;
    background: var(--nra-bg);
    border-radius: 50%;
    border: 2px dashed var(--nra-border);
}

.nra-empty-state p {
    margin: 0;
}

/* Request items (injected by JS) */
.nra-summary-block {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--nra-border);
}

.nra-summary-block h3 {
    font-size: 0.875rem;
    font-weight: 600;
    margin: 0 0 0.5rem;
    color: var(--nra-text);
}

.nra-summary-block p {
    font-size: 0.875rem;
    margin: 0.25rem 0;
    color: var(--nra-muted);
}

.nra-request-list-title {
    font-size: 0.875rem;
    font-weight: 600;
    margin: 0 0 0.5rem;
    color: var(--nra-text);
}

.nra-request-item {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.625rem 0.75rem;
    margin-bottom: 0.5rem;
    background: var(--nra-bg);
    border: 1px solid var(--nra-border);
    border-radius: var(--nra-radius-sm);
    font-size: 0.875rem;
}

.nra-request-item-method {
    font-weight: 600;
    
    color: var(--nra-text);
}

.nra-request-item-status {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.nra-request-item-status.ok {
    background: rgba(5, 150, 105, 0.12);
    color: var(--nra-success);
}

.nra-request-item-status.err {
    background: rgba(220, 38, 38, 0.12);
    color: var(--nra-error);
}

.nra-request-item-time {
    color: var(--nra-muted);
    font-variant-numeric: tabular-nums;
}

.nra-request-item-meta {
    font-size: 0.75rem;
    color: var(--nra-muted);
    width: 100%;
    margin-top: 0.25rem;
}

/* Loading state */
.nra-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 180px;
    text-align: center;
    color: var(--nra-muted);
}

.nra-loading-spinner {
    width: 40px;
    height: 40px;
    margin-bottom: 0.75rem;
    border: 3px solid var(--nra-border);
    border-top-color: var(--nra-accent);
    border-radius: 50%;
    animation: nra-spin 0.8s linear infinite;
}

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

/* Issues block */
.nra-issues {
    margin-bottom: 1.5rem;
}

.nra-issues-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 0.5rem;
    color: var(--nra-text);
}

.nra-issues-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nra-issue-item {
    padding: 0.75rem 1rem;
    border-radius: var(--nra-radius-sm);
    font-size: 0.875rem;
    border-left: 4px solid;
}

.nra-issue-item.warn {
    background: rgba(245, 158, 11, 0.08);
    border-left-color: #d97706;
    color: var(--nra-text);
}

.nra-issue-item.err {
    background: rgba(220, 38, 38, 0.08);
    border-left-color: var(--nra-error);
    color: var(--nra-text);
}

.nra-issue-item strong {
    display: block;
    margin-bottom: 0.25rem;
}

.nra-issue-item small {
    color: var(--nra-muted);
}

/* Content article */
.nra-content {
    padding: 1.25rem 0;
    border-top: 1px solid var(--nra-border);
}

.nra-content h2 {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 1rem 0 0.5rem;
    color: var(--nra-text);
}

.nra-content h2:first-child {
    margin-top: 0;
}

.nra-content ul {
    margin: 0 0 1rem;
    padding-left: 1.25rem;
}

.nra-content li {
    margin-bottom: 0.375rem;
    font-size: 0.9375rem;
    color: var(--nra-text);
    line-height: 1.5;
}