:root {
    --data-tool-shell-bg: #ffffff;
    --data-tool-border: rgba(15, 23, 42, 0.08);
    --data-tool-shadow: 0 20px 45px rgba(15, 23, 42, 0.08);
    --data-tool-accent: #2563eb;
    --data-tool-accent-soft: rgba(37, 99, 235, 0.12);
    --data-tool-text: #0f172a;
    --data-tool-muted: #475569;
    --data-tool-surface: #f8fafc;
    --data-tool-pill: rgba(15, 23, 42, 0.04);
}

.data-tool-shell {
    background: var(--data-tool-shell-bg);
    border-radius: 28px;
    padding: clamp(1.75rem, 4vw, 2.75rem);
    box-shadow: var(--data-tool-shadow);
    border: 1px solid var(--data-tool-border);
    margin-bottom: clamp(2rem, 4vw, 3rem);
}

.data-tool-header {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: clamp(1.75rem, 3vw, 2.5rem);
}

.data-tool-header h1,
.data-tool-header h2 {
    font-weight: 700;
    font-size: clamp(1.75rem, 2.6vw, 2.35rem);
    color: var(--data-tool-text);
    margin: 0;
}

.data-tool-header h2 {
    font-size: clamp(1.5rem, 2vw, 2rem);
}

.data-tool-subtitle {
    margin: 0;
    color: var(--data-tool-muted);
    font-size: 1rem;
    max-width: 68ch;
}

.data-tool-form {
    display: flex;
    flex-direction: column;
    gap: clamp(1.5rem, 3vw, 2rem);
}

.data-tool-field-grid {
    display: grid;
    gap: 1.25rem;
}

@media (min-width: 768px) {
    .data-tool-field-grid[data-columns="2"] {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .data-tool-field-grid[data-columns="3"] {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.data-tool-field {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.data-tool-field label {
    font-weight: 600;
    color: var(--data-tool-text);
    font-size: 0.95rem;
}

.data-tool-input,
.data-tool-select,
.data-tool-textarea {
    border-radius: 14px;
    border: 1px solid var(--data-tool-border);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    color: var(--data-tool-text);
    background: #fff;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.data-tool-textarea {
    min-height: 140px;
    resize: vertical;
}

.data-tool-input:focus,
.data-tool-select:focus,
.data-tool-textarea:focus {
    border-color: rgba(37, 99, 235, 0.6);
    box-shadow: 0 0 0 3px var(--data-tool-accent-soft);
    outline: none;
}

.data-tool-checkbox-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.data-tool-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--data-tool-pill);
    border-radius: 999px;
    padding: 0.4rem 0.75rem;
    font-size: 0.9rem;
    color: var(--data-tool-muted);
    transition: background 0.2s ease, color 0.2s ease;
}

.data-tool-checkbox input {
    accent-color: var(--data-tool-accent);
}

.data-tool-checkbox[data-active="true"] {
    background: var(--data-tool-accent-soft);
    color: var(--data-tool-accent);
}

.data-tool-dropzone {
    position: relative;
    border: 2px dashed var(--data-tool-border);
    border-radius: 18px;
    padding: 2rem;
    text-align: center;
    background: var(--data-tool-surface);
    color: var(--data-tool-muted);
    cursor: pointer;
    transition: border-color 0.2s ease, background 0.2s ease;
}

.data-tool-dropzone strong {
    display: block;
    font-size: 1rem;
    color: var(--data-tool-text);
}

.data-tool-dropzone span {
    display: block;
    font-size: 0.9rem;
    margin-top: 0.35rem;
}

.data-tool-dropzone input[type="file"] {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.data-tool-dropzone[data-dragging="true"] {
    border-color: var(--data-tool-accent);
    background: rgba(37, 99, 235, 0.05);
    color: var(--data-tool-text);
}

.data-tool-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: flex-start;
    align-items: center;
}

.data-tool-submit {
    background: var(--data-tool-accent);
    color: #fff;
    border: none;
    border-radius: 999px;
    padding: 0.85rem 1.8rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.data-tool-submit:hover,
.data-tool-submit:focus {
    transform: translateY(-1px);
    box-shadow: 0 15px 25px rgba(37, 99, 235, 0.24);
    outline: none;
}

.data-tool-secondary {
    background: transparent;
    border: 1px solid var(--data-tool-border);
    border-radius: 999px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    color: var(--data-tool-text);
    cursor: pointer;
}

.data-tool-result {
    border-radius: 22px;
    border: 1px solid var(--data-tool-border);
    background: var(--data-tool-surface);
    padding: clamp(1.5rem, 3vw, 2rem);
    margin-top: clamp(1rem, 2vw, 1.5rem);
}

.data-tool-result[data-empty="true"] {
    border-style: dashed;
    text-align: center;
    color: var(--data-tool-muted);
}

.data-tool-result-header {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}

.data-tool-result-header h2 {
    margin: 0;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--data-tool-text);
}

.data-tool-result-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.data-tool-copy,
.data-tool-download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border-radius: 999px;
    border: 1px solid var(--data-tool-border);
    padding: 0.5rem 1.1rem;
    font-weight: 600;
    color: var(--data-tool-text);
    text-decoration: none;
    cursor: pointer;
    background: #fff;
    transition: border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.data-tool-copy:hover,
.data-tool-copy:focus,
.data-tool-download:hover,
.data-tool-download:focus {
    border-color: var(--data-tool-accent);
    color: var(--data-tool-accent);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
    outline: none;
}

.data-tool-preview-table {
    width: 100%;
    border-collapse: collapse;
    border-radius: 16px;
    overflow: hidden;
    background: #fff;
    box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.05);
}

.data-tool-preview-table thead {
    background: rgba(37, 99, 235, 0.08);
}

.data-tool-preview-table th,
.data-tool-preview-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
    font-size: 0.95rem;
    color: var(--data-tool-text);
}

.data-tool-preview-table tbody tr:last-child td {
    border-bottom: none;
}

.data-tool-code {
    position: relative;
    background: #0f172a;
    color: #e2e8f0;
    border-radius: 18px;
    padding: 1.25rem;
    font-family: "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 0.92rem;
    line-height: 1.55;
    overflow-x: auto;
}

.data-tool-summary-grid {
    display: grid;
    gap: 1rem;
}

@media (min-width: 600px) {
    .data-tool-summary-grid {
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    }
}

.data-tool-summary-card {
    background: #fff;
    border-radius: 16px;
    padding: 1rem 1.1rem;
    border: 1px solid rgba(15, 23, 42, 0.06);
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.data-tool-summary-card dt {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--data-tool-muted);
    margin: 0;
}

.data-tool-summary-card dd {
    margin: 0;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--data-tool-text);
}

.data-tool-palette {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.data-tool-swatch {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    font-size: 0.72rem;
    font-weight: 600;
    color: rgba(15, 23, 42, 0.85);
    padding: 0.35rem;
    background-clip: padding-box;
}

.data-tool-pill-note {
    background: rgba(37, 99, 235, 0.08);
    border-radius: 12px;
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    color: var(--data-tool-muted);
}

.data-tool-error {
    border-radius: 16px;
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid rgba(220, 38, 38, 0.2);
    padding: 0.85rem 1.1rem;
    color: #b91c1c;
    font-weight: 600;
}

.data-tool-empty-preview {
    font-size: 0.95rem;
    color: var(--data-tool-muted);
    text-align: center;
    padding: 1rem;
}

.data-tool-preview-image {
    display: flex;
    justify-content: center;
    padding: 1rem;
    background: #fff;
    border-radius: 18px;
    border: 1px solid rgba(15, 23, 42, 0.08);
}

.data-tool-preview-image img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.22);
}

[data-data-copy-success="true"] {
    position: relative;
}

[data-data-copy-success="true"]::after {
    content: "Copied";
    position: absolute;
    top: -0.85rem;
    right: 0;
    background: var(--data-tool-accent);
    color: #fff;
    border-radius: 999px;
    font-size: 0.75rem;
    padding: 0.2rem 0.75rem;
    opacity: 0;
    animation: data-tool-pop 1.6s ease;
}

@keyframes data-tool-pop {
    0% {
        opacity: 0;
        transform: translateY(-2px);
    }
    20%, 80% {
        opacity: 1;
        transform: translateY(-4px);
    }
    100% {
        opacity: 0;
        transform: translateY(-6px);
    }
}