.json-formatter {
    --json-border: var(--border-color, #d7dee8);
    --json-surface: var(--surface-color, #ffffff);
    --json-muted-surface: var(--muted-surface, #f6f8fb);
    --json-text: var(--text-color, #172033);
    --json-muted: var(--muted-text, #5c687a);
    --json-primary: var(--primary-color, #2563eb);
    --json-valid: #176b3a;
    --json-valid-bg: #ecf9f0;
    --json-invalid: #a12622;
    --json-invalid-bg: #fff1f0;
    color: var(--json-text);
}

.json-formatter .tool-title-line {
    display: flex;
    align-items: flex-start;
    gap: 0.9rem;
}

.json-formatter .tool-title-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    min-width: 3rem;
    min-height: 3rem;
    padding: 0.35rem;
    border-radius: 0.7rem;
    background: var(--json-muted-surface);
    color: var(--json-primary);
    font: 700 1rem/1 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.json-formatter .tool-heading h1 {
    margin: 0;
}

.json-formatter .tool-heading p {
    margin: 0.45rem 0 0;
    color: var(--json-muted);
    font-size: 1rem;
    line-height: 1.55;
}

.json-local-notice {
    margin: 1.25rem 0;
    line-height: 1.55;
}

.json-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.85rem 1rem;
    margin-bottom: 1rem;
}

.json-primary-actions,
.json-secondary-actions,
.json-result-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.65rem;
}

.json-secondary-actions label {
    font-weight: 700;
}

.json-formatter .button,
.json-formatter button,
.json-formatter select {
    min-height: 44px;
    font-size: 0.98rem;
}

.json-formatter select {
    max-width: 100%;
    padding: 0.55rem 2.1rem 0.55rem 0.75rem;
    border: 1px solid var(--json-border);
    border-radius: 0.45rem;
    background-color: var(--json-surface);
    color: var(--json-text);
}

.json-editor-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 1rem;
}

.json-editor-panel {
    min-width: 0;
    padding: 1rem;
    border: 1px solid var(--json-border);
    border-radius: 0.75rem;
    background: var(--json-surface);
    box-shadow: 0 1px 2px rgba(20, 31, 50, 0.04);
}

.json-panel-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem;
    min-height: 4.3rem;
    margin-bottom: 0.75rem;
}

.json-panel-heading h2 {
    margin: 0;
    font-size: 1.1rem;
}

.json-panel-heading p {
    margin: 0.35rem 0 0;
    color: var(--json-muted);
    font-size: 0.94rem;
    line-height: 1.45;
}

.json-panel-heading code {
    font-size: 0.9em;
}

.json-formatter textarea {
    display: block;
    width: 100%;
    min-height: var(--json-editor-height, 420px);
    resize: vertical;
    box-sizing: border-box;
    padding: 0.9rem;
    border: 1px solid var(--json-border);
    border-radius: 0.55rem;
    background: var(--json-muted-surface);
    color: var(--json-text);
    font: 0.98rem/1.55 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    tab-size: 4;
    white-space: pre;
    overflow: auto;
}

.json-formatter textarea::placeholder {
    color: var(--json-muted);
    opacity: 0.85;
}

.json-formatter textarea[readonly] {
    background: var(--json-muted-surface);
}

.json-formatter textarea.json-result-stale {
    opacity: 0.68;
}

.json-drop-zone {
    transition: border-color 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.json-drop-zone.json-drop-active {
    border-color: var(--json-primary);
    background: #f3f7ff;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.16);
}

.json-drop-message,
.json-result-hint {
    margin: 0.65rem 0 0;
    color: var(--json-muted);
    font-size: 0.93rem;
    line-height: 1.45;
}

.json-result-hint {
    color: #775612;
}

.json-result-actions {
    margin-top: 0.8rem;
}

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

.json-feedback {
    margin-top: 1rem;
}

.json-status {
    padding: 0.9rem 1rem;
    border: 1px solid var(--json-border);
    border-radius: 0.6rem;
    font-size: 1rem;
    font-weight: 650;
    line-height: 1.5;
}

.json-status-neutral {
    background: var(--json-muted-surface);
    color: var(--json-text);
}

.json-status-valid {
    border-color: #9fd4b2;
    background: var(--json-valid-bg);
    color: var(--json-valid);
}

.json-status-invalid {
    border-color: #e6aaa7;
    background: var(--json-invalid-bg);
    color: var(--json-invalid);
}

.json-statistics {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0.75rem;
    margin: 0.85rem 0 0;
}

.json-statistics > div {
    min-width: 0;
    padding: 0.85rem;
    border: 1px solid var(--json-border);
    border-radius: 0.55rem;
    background: var(--json-surface);
}

.json-statistics dt {
    color: var(--json-muted);
    font-size: 0.88rem;
    line-height: 1.3;
}

.json-statistics dd {
    margin: 0.3rem 0 0;
    overflow-wrap: anywhere;
    font-size: 1.1rem;
    font-weight: 750;
}

.json-formatter button:focus-visible,
.json-formatter select:focus-visible,
.json-formatter textarea:focus-visible,
.json-admin-settings input:focus-visible,
.json-admin-settings select:focus-visible {
    outline: 3px solid rgba(37, 99, 235, 0.38);
    outline-offset: 2px;
}

.json-formatter button:disabled {
    cursor: not-allowed;
    opacity: 0.55;
}

.json-visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.json-admin-settings h2 {
    margin-top: 0;
}

.json-admin-settings > p {
    max-width: 52rem;
    color: var(--json-muted, #5c687a);
    line-height: 1.55;
}

.json-admin-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1.25rem;
}

.json-admin-field {
    padding: 1rem;
    border: 1px solid var(--json-border, #d7dee8);
    border-radius: 0.65rem;
    background: var(--json-surface, #ffffff);
}

.json-admin-field > label,
.json-admin-checkbox-field label {
    display: block;
    margin-bottom: 0.45rem;
    font-weight: 700;
}

.json-admin-field select,
.json-admin-field input[type="number"] {
    min-height: 44px;
    max-width: 100%;
    padding: 0.55rem 0.7rem;
    border: 1px solid var(--json-border, #d7dee8);
    border-radius: 0.45rem;
    background: var(--json-surface, #ffffff);
    color: inherit;
    font-size: 1rem;
}

.json-admin-number-line {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.json-admin-checkbox-field {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.json-admin-checkbox-field input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
    margin-top: 0.15rem;
}

.json-admin-checkbox-field label {
    margin-bottom: 0;
}

.json-admin-help {
    margin: 0.45rem 0 0;
    color: var(--json-muted, #5c687a);
    font-size: 0.92rem;
    line-height: 1.45;
}

@media (max-width: 900px) {
    .json-statistics {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 800px) {
    .json-editor-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .json-toolbar {
        align-items: stretch;
    }

    .json-primary-actions,
    .json-secondary-actions {
        width: 100%;
    }

    .json-formatter textarea {
        min-height: min(var(--json-editor-height, 420px), 58vh);
    }
}

@media (max-width: 600px) {
    .json-primary-actions .button,
    .json-secondary-actions .button,
    .json-result-actions .button {
        flex: 1 1 auto;
    }

    .json-secondary-actions label {
        width: 100%;
    }

    .json-secondary-actions select {
        flex: 1 1 100%;
    }

    .json-panel-heading {
        flex-direction: column;
        min-height: 0;
    }

    .json-browse-button {
        width: 100%;
    }

    .json-statistics,
    .json-admin-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .json-editor-panel {
        padding: 0.8rem;
    }
}