:root {
    --web-tool-bg: #f8fafc;
    --web-tool-border: rgba(15, 23, 42, 0.08);
    --web-tool-accent: #2563eb;
    --web-tool-accent-soft: rgba(37, 99, 235, 0.12);
    --web-tool-danger: #dc2626;
    --web-tool-warning: #d97706;
    --web-tool-success: #16a34a;
    --web-tool-text: #0f172a;
    --web-tool-muted: #64748b;
    --web-tool-radius: 16px;
    --web-tool-shadow: 0 18px 45px rgba(15, 23, 42, 0.08), 0 2px 10px rgba(15, 23, 42, 0.04);
    --web-tool-transition: 150ms ease;
}

[data-theme="dark"] :root {
    --web-tool-bg: #0f172a;
    --web-tool-border: rgba(148, 163, 184, 0.18);
    --web-tool-accent: #60a5fa;
    --web-tool-accent-soft: rgba(96, 165, 250, 0.16);
    --web-tool-danger: #f87171;
    --web-tool-warning: #fbbf24;
    --web-tool-success: #34d399;
    --web-tool-text: #e2e8f0;
    --web-tool-muted: #94a3b8;
    --web-tool-shadow: 0 20px 60px rgba(15, 23, 42, 0.45), 0 4px 15px rgba(15, 23, 42, 0.3);
}

.web-tool-shell {
    position: relative;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(14, 165, 233, 0.08));
    border-radius: calc(var(--web-tool-radius) + 6px);
    padding: 2.5rem clamp(1rem, 3vw, 3rem);
    margin-bottom: 2.5rem;
    overflow: hidden;
}

.web-tool-shell::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(59, 130, 246, 0.18), transparent 58%),
        radial-gradient(circle at bottom left, rgba(45, 212, 191, 0.16), transparent 55%);
    opacity: 0.85;
    pointer-events: none;
}

.web-tool-shell__inner {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 2.25rem;
}

.web-tool-header {
    display: grid;
    gap: 0.6rem;
}

.web-tool-header__eyebrow {
    font-size: 0.95rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-weight: 600;
    color: rgba(15, 23, 42, 0.58);
}

.web-tool-header__title {
    font-size: clamp(1.9rem, 3vw, 2.5rem);
    color: var(--web-tool-text);
    font-weight: 700;
}

.web-tool-header__subtitle {
    font-size: 1.05rem;
    max-width: 58ch;
    color: var(--web-tool-muted);
}

.web-tool-form {
    background: #fff;
    border-radius: var(--web-tool-radius);
    padding: clamp(1.5rem, 3vw, 2.5rem);
    box-shadow: var(--web-tool-shadow);
    border: 1px solid var(--web-tool-border);
    display: grid;
    gap: 1.5rem;
}

[data-theme="dark"] .web-tool-form {
    background: rgba(15, 23, 42, 0.92);
    backdrop-filter: blur(12px);
}

.web-tool-input-group {
    display: grid;
    gap: 0.85rem;
}

.web-tool-input-group label {
    font-weight: 600;
    color: var(--web-tool-text);
    font-size: 0.95rem;
}

.web-tool-input {
    display: flex;
    border: 1px solid var(--web-tool-border);
    border-radius: calc(var(--web-tool-radius) - 6px);
    padding: 0.65rem;
    background: rgba(255, 255, 255, 0.9);
    align-items: center;
    gap: 0.75rem;
    transition: border-color var(--web-tool-transition), box-shadow var(--web-tool-transition);
}

[data-theme="dark"] .web-tool-input {
    background: rgba(15, 23, 42, 0.7);
}

.web-tool-input input,
.web-tool-input textarea,
.web-tool-input select {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 1.05rem;
    line-height: 1.5;
    font-family: "Inter", "Segoe UI", sans-serif;
    color: inherit;
    outline: none;
}

.web-tool-input textarea {
    min-height: 120px;
    resize: vertical;
}

.web-tool-input:focus-within {
    border-color: var(--web-tool-accent);
    box-shadow: 0 0 0 4px var(--web-tool-accent-soft);
}

.web-tool-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.web-tool-alert {
    border-radius: calc(var(--web-tool-radius) - 6px);
    padding: 0.9rem 1.1rem;
    border-left: 4px solid currentColor;
    background: rgba(148, 163, 184, 0.12);
    color: var(--web-tool-text);
    font-size: 0.95rem;
}

.web-tool-alert--error {
    color: var(--web-tool-danger);
    background: rgba(220, 38, 38, 0.08);
}

.web-tool-alert--success {
    color: var(--web-tool-success);
    background: rgba(22, 163, 74, 0.08);
}

.web-tool-submit {
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    border: none;
    color: #fff;
    font-weight: 600;
    padding: 0.85rem 1.8rem;
    border-radius: 999px;
    cursor: pointer;
    transition: transform var(--web-tool-transition), box-shadow var(--web-tool-transition);
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    font-size: 1rem;
}

.web-tool-submit:hover,
.web-tool-submit:focus-visible {
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(37, 99, 235, 0.28);
}

.web-tool-submit i {
    font-size: 1.05rem;
}

.web-tool-advanced {
    border: 1px dashed var(--web-tool-border);
    border-radius: calc(var(--web-tool-radius) - 6px);
    padding: 1rem 1.2rem;
    background: rgba(148, 163, 184, 0.08);
}

.web-tool-advanced__toggle {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: none;
    background: transparent;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    color: var(--web-tool-muted);
}

.web-tool-advanced__toggle i {
    transition: transform var(--web-tool-transition);
}

.web-tool-advanced[data-open] .web-tool-advanced__toggle i {
    transform: rotate(180deg);
}

.web-tool-advanced__content {
    margin-top: 1rem;
    display: none;
    gap: 1rem;
}

.web-tool-advanced[data-open] .web-tool-advanced__content {
    display: grid;
}

.web-tool-results {
    display: grid;
    gap: 1.5rem;
}

.web-tool-results__title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--web-tool-text);
}

.web-tool-card {
    border-radius: var(--web-tool-radius);
    border: 1px solid var(--web-tool-border);
    background: #fff;
    box-shadow: var(--web-tool-shadow);
    padding: clamp(1.25rem, 2.5vw, 1.9rem);
    display: grid;
    gap: 1rem;
}

[data-theme="dark"] .web-tool-card {
    background: rgba(15, 23, 42, 0.9);
}

.web-tool-card__title {
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--web-tool-text);
}

.web-tool-card__subtitle {
    color: var(--web-tool-muted);
    font-size: 0.9rem;
}

.web-tool-table {
    width: 100%;
    border-collapse: collapse;
}

.web-tool-table th,
.web-tool-table td {
    text-align: left;
    padding: 0.75rem 0.95rem;
    border-bottom: 1px solid var(--web-tool-border);
    font-size: 0.95rem;
}

.web-tool-table th {
    font-weight: 600;
    color: var(--web-tool-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-size: 0.8rem;
}

.web-tool-table tbody tr:hover {
    background: rgba(37, 99, 235, 0.08);
}

.web-tool-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.12);
    color: var(--web-tool-muted);
}

.web-tool-badge--success {
    background: rgba(22, 163, 74, 0.16);
    color: var(--web-tool-success);
}

.web-tool-badge--warning {
    background: rgba(217, 119, 6, 0.16);
    color: var(--web-tool-warning);
}

.web-tool-badge--danger {
    background: rgba(220, 38, 38, 0.16);
    color: var(--web-tool-danger);
}

.web-tool-score {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.95rem;
}

.web-tool-score--good {
    background: rgba(22, 163, 74, 0.12);
    color: var(--web-tool-success);
}

.web-tool-score--ok {
    background: rgba(217, 119, 6, 0.12);
    color: var(--web-tool-warning);
}

.web-tool-score--poor {
    background: rgba(220, 38, 38, 0.12);
    color: var(--web-tool-danger);
}

.web-tool-stat-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.web-tool-stat {
    border-radius: calc(var(--web-tool-radius) - 6px);
    border: 1px solid var(--web-tool-border);
    padding: 1rem 1.2rem;
    background: rgba(255, 255, 255, 0.92);
    display: grid;
    gap: 0.25rem;
}

[data-theme="dark"] .web-tool-stat {
    background: rgba(15, 23, 42, 0.74);
}

.web-tool-stat__label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--web-tool-muted);
}

.web-tool-stat__value {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--web-tool-text);
}

.web-tool-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    font-size: 0.85rem;
    color: var(--web-tool-muted);
}

.web-tool-legend span {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.web-tool-legend span::before {
    content: "";
    width: 12px;
    height: 12px;
    border-radius: 3px;
    background: currentColor;
    opacity: 0.55;
}

.web-tool-accordion {
    border-radius: calc(var(--web-tool-radius) - 4px);
    border: 1px solid var(--web-tool-border);
    overflow: hidden;
}

.web-tool-accordion__item + .web-tool-accordion__item {
    border-top: 1px solid var(--web-tool-border);
}

.web-tool-accordion__button {
    width: 100%;
    text-align: left;
    padding: 1rem 1.25rem;
    font-weight: 600;
    background: rgba(148, 163, 184, 0.08);
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background var(--web-tool-transition);
}

.web-tool-accordion__button:hover,
.web-tool-accordion__button:focus-visible {
    background: rgba(59, 130, 246, 0.15);
}

.web-tool-accordion__content {
    padding: 1.1rem 1.25rem 1.4rem;
    display: none;
    color: var(--web-tool-text);
}

.web-tool-accordion__item[data-open] .web-tool-accordion__content {
    display: block;
}

.web-tool-empty {
    border-radius: calc(var(--web-tool-radius) - 6px);
    border: 1px dashed var(--web-tool-border);
    padding: 1.4rem;
    text-align: center;
    color: var(--web-tool-muted);
}

.web-tool-grid-two {
    display: grid;
    gap: 1rem;
}

@media (min-width: 768px) {
    .web-tool-grid-two {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.web-tool-diff {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 992px) {
    .web-tool-diff {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.web-tool-diff__panel {
    border-radius: calc(var(--web-tool-radius) - 4px);
    border: 1px solid var(--web-tool-border);
    padding: 1rem;
    background: rgba(255, 255, 255, 0.92);
    display: grid;
    gap: 1rem;
}

[data-theme="dark"] .web-tool-diff__panel {
    background: rgba(15, 23, 42, 0.78);
}

.web-tool-diff__frame {
    border-radius: 12px;
    border: 1px solid var(--web-tool-border);
    overflow: hidden;
    min-height: 280px;
}

.web-tool-scroll {
    max-height: 360px;
    overflow: auto;
    padding-right: 0.75rem;
}

.web-tool-scroll::-webkit-scrollbar {
    width: 10px;
}

.web-tool-scroll::-webkit-scrollbar-thumb {
    background: rgba(100, 116, 139, 0.35);
    border-radius: 999px;
}

.web-tool-note {
    font-size: 0.9rem;
    color: var(--web-tool-muted);
    line-height: 1.6;
}

.web-tool-grid-three {
    display: grid;
    gap: 1rem;
}

@media (min-width: 992px) {
    .web-tool-grid-three {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.web-tool-tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.web-tool-tag {
    font-size: 0.85rem;
    padding: 0.35rem 0.65rem;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.4);
    color: var(--web-tool-muted);
}

.web-tool-highlight-list {
    list-style: none;
    padding-left: 0;
    margin-bottom: 0;
    display: grid;
    gap: 0.65rem;
}

.web-tool-highlight-list li {
    display: grid;
    gap: 0.25rem;
}

.web-tool-highlight-list strong {
    font-weight: 600;
    color: var(--web-tool-text);
}

.web-tool-card__list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0.5rem;
}

.web-tool-card__list li {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    border-bottom: 1px dashed rgba(148, 163, 184, 0.4);
    padding-bottom: 0.45rem;
}

.web-tool-card__list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.web-tool-card__list span:last-child {
    color: var(--web-tool-muted);
}

.web-tool-preview {
    border-radius: calc(var(--web-tool-radius) - 6px);
    border: 1px solid var(--web-tool-border);
    padding: 1rem;
    background: rgba(255, 255, 255, 0.92);
    font-family: "JetBrains Mono", "Fira Code", "Menlo", monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--web-tool-text);
}

[data-theme="dark"] .web-tool-preview {
    background: rgba(15, 23, 42, 0.74);
}

.web-tool-preview code {
    white-space: pre-wrap;
    word-break: break-word;
}

.web-tool-results [hidden] {
    display: none !important;
}

.web-tool-loader {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--web-tool-muted);
}

.web-tool-loader span {
    width: 0.6rem;
    height: 0.6rem;
    border-radius: 999px;
    background: var(--web-tool-muted);
    animation: web-tool-pulse 1.1s ease-in-out infinite;
}

.web-tool-loader span:nth-child(2) {
    animation-delay: 0.15s;
}

.web-tool-loader span:nth-child(3) {
    animation-delay: 0.3s;
}

@keyframes web-tool-pulse {
    0%, 100% {
        transform: scale(0.75);
        opacity: 0.4;
    }
    50% {
        transform: scale(1.1);
        opacity: 1;
    }
}

.web-tool-pill-inputs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.web-tool-pill-inputs input {
    min-width: 160px;
}

.web-tool-pill-inputs button {
    padding: 0.45rem 0.95rem;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.38);
    background: rgba(148, 163, 184, 0.12);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--web-tool-transition), color var(--web-tool-transition);
}

.web-tool-pill-inputs button:hover,
.web-tool-pill-inputs button:focus-visible {
    background: rgba(37, 99, 235, 0.15);
    color: var(--web-tool-accent);
}

.web-tool-hint {
    font-size: 0.85rem;
    color: var(--web-tool-muted);
}

.web-tool-link-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0.65rem;
}

.web-tool-link-list a {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--web-tool-accent);
    text-decoration: none;
    font-weight: 600;
}

.web-tool-link-list a i {
    font-size: 0.85rem;
}

.web-tool-empty strong {
    display: block;
    margin-bottom: 0.25rem;
}

.web-tool-figure {
    display: grid;
    gap: 0.5rem;
    justify-items: center;
    text-align: center;
}

.web-tool-figure canvas {
    max-width: 240px;
}

.web-tool-stats-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 0.5rem;
}

.web-tool-stats-table th,
.web-tool-stats-table td {
    padding: 0.55rem 0.8rem;
    border-bottom: 1px solid var(--web-tool-border);
    font-size: 0.9rem;
}

.web-tool-stats-table th {
    text-transform: uppercase;
    font-size: 0.75rem;
    color: var(--web-tool-muted);
    letter-spacing: 0.06em;
}

.web-tool-breadcrumbs {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.web-tool-breadcrumbs__trail {
    display: flex;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--web-tool-muted);
}

.web-tool-breadcrumbs__trail a {
    color: inherit;
}

.web-tool-breadcrumbs__title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--web-tool-text);
}

.web-tool-tagline {
    font-size: 0.95rem;
    color: var(--web-tool-muted);
}

.web-tool-section-title {
    font-weight: 600;
    font-size: 1.15rem;
    color: var(--web-tool-text);
}

.web-tool-metadata-list {
    display: grid;
    gap: 0.5rem;
}

.web-tool-metadata-list dt {
    font-weight: 600;
    color: var(--web-tool-text);
}

.web-tool-metadata-list dd {
    margin: 0;
    color: var(--web-tool-muted);
    font-size: 0.9rem;
}

.web-tool-canvas-wrapper {
    position: relative;
    width: min(320px, 100%);
    margin-inline: auto;
}

.web-tool-canvas-wrapper::after {
    content: attr(data-label);
    position: absolute;
    inset: 50% auto auto 50%;
    transform: translate(-50%, -50%);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--web-tool-text);
}