/* YAML Validator - mobile-first, unique layout */
.bmc-yaml .yval-tool {
    --yval-bg: #f1f5f9;
    --yval-surface: #ffffff;
    --yval-border: #e2e8f0;
    --yval-text: #0f172a;
    --yval-muted: #64748b;
    --yval-valid: #059669;
    --yval-valid-bg: #ecfdf5;
    --yval-invalid: #dc2626;
    --yval-invalid-bg: #fef2f2;
    --yval-idle: #64748b;
    --yval-idle-bg: #f1f5f9;
    --yval-radius: 10px;
    --yval-radius-sm: 6px;
    --yval-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.yval-tool {
    margin-bottom: 2rem;
}

.yval-status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 9999px;
    background: var(--yval-idle-bg);
    color: var(--yval-idle);
    transition: background-color 0.2s ease, color 0.2s ease;
}

.yval-status.yval-valid {
    background: var(--yval-valid-bg);
    color: var(--yval-valid);
}

.yval-status.yval-invalid {
    background: var(--yval-invalid-bg);
    color: var(--yval-invalid);
}

.yval-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
    flex-shrink: 0;
}

.yval-status.yval-valid .yval-status-dot {
    box-shadow: 0 0 0 2px var(--yval-valid-bg), 0 0 0 4px var(--yval-valid);
}

.yval-status.yval-invalid .yval-status-dot {
    box-shadow: 0 0 0 2px var(--yval-invalid-bg), 0 0 0 4px var(--yval-invalid);
}

.yval-status-text {
    line-height: 1.3;
}

.yval-panels {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-height: 280px;
}

@media (min-width: 768px) {
    .yval-panels {
        flex-direction: row;
        gap: 0;
        min-height: 360px;
    }
}

.yval-panel {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    background: var(--yval-surface);
    border: 1px solid var(--yval-border);
    border-radius: var(--yval-radius);
    box-shadow: var(--yval-shadow);
    overflow: hidden;
}

@media (min-width: 768px) {
    .yval-panel:first-child {
        border-top-right-radius: 0;
        border-bottom-right-radius: 0;
        border-right: none;
    }

    .yval-panel:last-child {
        border-top-left-radius: 0;
        border-bottom-left-radius: 0;
    }
}

.yval-panel-head {
    flex-shrink: 0;
    padding: 0.625rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--yval-muted);
    background: var(--yval-bg);
    border-bottom: 1px solid var(--yval-border);
}

.yval-editor-wrap,
.yval-result-wrap {
    flex: 1;
    min-height: 350px;
    display: flex;
    flex-direction: column;
}

@media (min-width: 768px) {
    .yval-editor-wrap,
    .yval-result-wrap {
        min-height: 450px;
    }
}

.yval-editor-wrap {
    position: relative;
}

.yval-editor {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    font-size: 14px;
}

.yval-result-wrap {
    padding: 0;
    overflow: auto;
}

.yval-result {
    flex: 1;
    min-height: 180px;
    font-size: 13px;
    line-height: 1.5;
    
    color: var(--yval-text);
    padding: 1rem;
    white-space: pre-wrap;
    word-break: break-word;
}

.yval-result:empty::before {
    content: "Validation result appears here";
    color: var(--yval-muted);
    font-style: normal;
}

.yval-result.yval-result-error {
    color: var(--yval-invalid);
}

.yval-result.yval-result-json {
    color: var(--yval-text);
}

/* ========== Educational section (yval-edu) – distinct layout ========== */
.yval-edu {
    --yval-edu-bg: #f8fafc;
    --yval-edu-border: #e2e8f0;
    --yval-edu-text: #0f172a;
    --yval-edu-muted: #64748b;
    --yval-edu-accent: #475569;
    --yval-edu-card: #ffffff;
    --yval-edu-radius: 8px;
    --yval-edu-flow-color: #0ea5e9;
    --yval-edu-error-indent: #f59e0b;
    --yval-edu-error-syntax: #dc2626;
    --yval-edu-error-struct: #8b5cf6;
    --yval-edu-error-format: #6366f1;
    --yval-edu-do: #059669;
    --yval-edu-dont: #dc2626;
    --yval-edu-yes: #059669;
    --yval-edu-info: #0ea5e9;
}

.yval-edu {
    margin-top: 2rem;
    margin-bottom: 2rem;
}

.yval-edu-card {
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
    border: 1px solid var(--yval-edu-border);
    padding: 2rem;
    overflow: hidden;
}

@media (min-width: 992px) {
    .yval-edu-card {
        padding: 2.5rem;
    }
}

.yval-edu-sidebar {
    position: sticky;
    top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.yval-edu-sidebar .related-tools-section,
.yval-edu-sidebar .faq-section {
    margin-bottom: 0;
}

.yval-edu-article {
    max-width: 100%;
    margin: 0;
}

.yval-edu-head {
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--yval-edu-border);
}

.yval-edu-title {
    font-size: clamp(1.5rem, 4vw, 1.875rem);
    font-weight: 700;
    line-height: 1.25;
    color: var(--yval-edu-text);
    margin: 0 0 0.75rem;
}

.yval-edu-lead {
    font-size: 1.0625rem;
    line-height: 1.6;
    color: var(--yval-edu-muted);
    margin: 0;
    max-width: 52ch;
}

.yval-edu-h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--yval-edu-text);
    margin: 0 0 1.25rem;
}

.yval-edu-h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--yval-edu-text);
    margin: 0 0 0.5rem;
}

/* Process flow – numbered list with left border */
.yval-edu-process {
    margin-bottom: 2.5rem;
}

.yval-edu-flow {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
    border-left: 3px solid var(--yval-edu-flow-color);
    margin-left: 0.75rem;
    padding-left: 0;
}

.yval-edu-flow-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem 0 1.25rem 1.25rem;
    position: relative;
    background: var(--yval-edu-card);
    margin-left: 0.75rem;
    margin-bottom: 0.5rem;
    border-radius: 0 var(--yval-edu-radius) var(--yval-edu-radius) 0;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.yval-edu-flow-item:last-child {
    margin-bottom: 0;
}

.yval-edu-flow-num {
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 700;
    color: #fff;
    background: var(--yval-edu-flow-color);
    border-radius: 50%;
    position: absolute;
    left: -1.5rem;
    top: 1.5rem;
}

.yval-edu-flow-body p {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--yval-edu-muted);
    margin: 0;
}

/* Error types – grid of cards with icon */
.yval-edu-errors {
    margin-bottom: 2.5rem;
}

.yval-edu-error-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 640px) {
    .yval-edu-error-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .yval-edu-error-list {
        grid-template-columns: repeat(4, 1fr);
    }
}

.yval-edu-error-item {
    display: flex;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--yval-edu-card);
    border-radius: var(--yval-edu-radius);
    border: 1px solid var(--yval-edu-border);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.yval-edu-error-icon {
    flex-shrink: 0;
    width: 2.25rem;
    height: 2.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    font-weight: 700;
    border-radius: 6px;
}

.yval-edu-error-icon-indent {
    background: #fef3c7;
    color: var(--yval-edu-error-indent);
}

.yval-edu-error-icon-syntax {
    background: #fee2e2;
    color: var(--yval-edu-error-syntax);
}

.yval-edu-error-icon-struct {
    background: #ede9fe;
    color: var(--yval-edu-error-struct);
}

.yval-edu-error-icon-format {
    background: #e0e7ff;
    color: var(--yval-edu-error-format);
}

.yval-edu-error-content p {
    font-size: 0.875rem;
    line-height: 1.55;
    color: var(--yval-edu-muted);
    margin: 0;
}

.yval-edu-error-content code {
    font-size: 0.8125rem;
    padding: 0.125rem 0.375rem;
    background: #f1f5f9;
    border-radius: 4px;
}

/* Use cases – stacked cards with badge and code block */
.yval-edu-use {
    margin-bottom: 2.5rem;
}

.yval-edu-use-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.yval-edu-use-card {
    padding: 1.5rem;
    background: var(--yval-edu-card);
    border: 1px solid var(--yval-edu-border);
    border-radius: var(--yval-edu-radius);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.yval-edu-use-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--yval-edu-muted);
    background: var(--yval-edu-bg);
    padding: 0.25rem 0.625rem;
    border-radius: 4px;
    margin-bottom: 0.75rem;
}

.yval-edu-use-card .yval-edu-h4 {
    margin-bottom: 0.75rem;
}

.yval-edu-use-card > p {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--yval-edu-muted);
    margin: 0 0 1rem;
}

.yval-edu-use-code {
    margin-bottom: 1rem;
}

.yval-edu-use-code-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--yval-edu-muted);
    margin-bottom: 0.5rem;
}

.yval-edu-pre {
    margin: 0;
    padding: 1rem;
    font-size: 0.8125rem;
    line-height: 1.5;
    background: #1e293b;
    color: #e2e8f0;
    border-radius: 6px;
    overflow-x: auto;
}

.yval-edu-pre code {
    background: none;
    padding: 0;
    color: inherit;
}

.yval-edu-use-result {
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--yval-edu-muted);
    margin: 0;
}

/* How-to steps – horizontal step numbers */
.yval-edu-howto {
    margin-bottom: 2.5rem;
}

.yval-edu-howto-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.yval-edu-howto-step {
    display: flex;
    gap: 1.25rem;
    padding: 1.25rem 0;
    border-bottom: 1px dashed var(--yval-edu-border);
    align-items: flex-start;
}

.yval-edu-howto-step:last-of-type {
    border-bottom: none;
}

.yval-edu-howto-num {
    flex-shrink: 0;
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--yval-edu-muted);
    min-width: 4.5rem;
}

.yval-edu-howto-body p {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--yval-edu-muted);
    margin: 0;
}

.yval-edu-howto-note {
    margin-top: 1.5rem;
    padding: 1rem 1.25rem;
    background: #eff6ff;
    border-left: 4px solid var(--yval-edu-info);
    border-radius: 0 6px 6px 0;
}

.yval-edu-howto-note p {
    font-size: 0.875rem;
    line-height: 1.55;
    color: var(--yval-edu-text);
    margin: 0;
}

/* Who benefits – icon grid */
.yval-edu-who {
    margin-bottom: 2.5rem;
}

.yval-edu-who-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 480px) {
    .yval-edu-who-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .yval-edu-who-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .yval-edu-who-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

.yval-edu-who-card {
    padding: 1.25rem;
    background: var(--yval-edu-card);
    border: 1px solid var(--yval-edu-border);
    border-radius: var(--yval-edu-radius);
    text-align: center;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.yval-edu-who-icon {
    display: block;
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    line-height: 1;
}

.yval-edu-who-card .yval-edu-h4 {
    margin-bottom: 0.375rem;
}

.yval-edu-who-card p {
    font-size: 0.8125rem;
    line-height: 1.45;
    color: var(--yval-edu-muted);
    margin: 0;
}

/* Compare (does / does not) */
.yval-edu-compare {
    margin-bottom: 2.5rem;
}

.yval-edu-compare-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 640px) {
    .yval-edu-compare-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .yval-edu-compare-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.yval-edu-compare-card {
    padding: 1.25rem;
    border-radius: var(--yval-edu-radius);
    border: 1px solid var(--yval-edu-border);
    background: var(--yval-edu-card);
}

.yval-edu-compare-mark {
    display: inline-block;
    width: 1.5rem;
    height: 1.5rem;
    text-align: center;
    line-height: 1.5rem;
    font-size: 1rem;
    font-weight: 700;
    border-radius: 50%;
    margin-bottom: 0.5rem;
}

.yval-edu-compare-yes .yval-edu-compare-mark {
    background: #d1fae5;
    color: var(--yval-edu-yes);
}

.yval-edu-compare-info .yval-edu-compare-mark {
    background: #e0f2fe;
    color: var(--yval-edu-info);
}

.yval-edu-compare-card p {
    font-size: 0.875rem;
    line-height: 1.55;
    color: var(--yval-edu-muted);
    margin: 0;
}

/* Tips (do / don't) */
.yval-edu-tips {
    margin-bottom: 2.5rem;
}

.yval-edu-tips-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 640px) {
    .yval-edu-tips-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .yval-edu-tips-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.yval-edu-tips-card {
    display: flex;
    gap: 1rem;
    padding: 1.25rem;
    border-radius: var(--yval-edu-radius);
    border: 1px solid var(--yval-edu-border);
    background: var(--yval-edu-card);
}

.yval-edu-tips-mark {
    flex-shrink: 0;
    width: 1.5rem;
    height: 1.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 700;
    border-radius: 50%;
}

.yval-edu-tips-do .yval-edu-tips-mark {
    background: #d1fae5;
    color: var(--yval-edu-do);
}

.yval-edu-tips-dont .yval-edu-tips-mark {
    background: #fee2e2;
    color: var(--yval-edu-dont);
}

.yval-edu-tips-content p {
    font-size: 0.875rem;
    line-height: 1.55;
    color: var(--yval-edu-muted);
    margin: 0;
}

.yval-edu-tips-content code {
    font-size: 0.8125rem;
    padding: 0.125rem 0.375rem;
    background: #f1f5f9;
    border-radius: 4px;
}

/* Tech / limits / team – prose blocks */
.yval-edu-tech,
.yval-edu-limits,
.yval-edu-team {
    margin-bottom: 2.5rem;
}

.yval-edu-tech p,
.yval-edu-team p {
    font-size: 0.9375rem;
    line-height: 1.65;
    color: var(--yval-edu-muted);
    margin: 0 0 0.75rem;
}

.yval-edu-tech p:last-child,
.yval-edu-team p:last-child {
    margin-bottom: 0;
}

.yval-edu-limits-list {
    margin: 0;
    padding-left: 1.5rem;
    font-size: 0.9375rem;
    line-height: 1.65;
    color: var(--yval-edu-muted);
}

.yval-edu-limits-list li {
    margin-bottom: 0.5rem;
}

.yval-edu-limits-list li:last-child {
    margin-bottom: 0;
}

.yval-edu-team-note {
    padding: 1rem 1.25rem;
    background: #f0fdf4;
    border-left: 4px solid var(--yval-edu-do);
    border-radius: 0 6px 6px 0;
    margin-top: 1rem;
}

.yval-edu-team a {
    color: var(--yval-edu-flow-color);
    text-decoration: underline;
}

.yval-edu-team a:hover {
    text-decoration: none;
}