:root {
    --dev-shell-bg: #10131a;
    --dev-shell-border: rgba(96, 117, 255, 0.35);
    --dev-shell-highlight: rgba(96, 117, 255, 0.18);
    --dev-shell-text: #f8f9ff;
    --dev-shell-muted: #9aa0bb;
    --dev-shell-tab: rgba(255, 255, 255, 0.08);
    --dev-shell-tab-active: rgba(96, 117, 255, 0.35);
    --dev-shell-error: #ff6b81;
    --dev-shell-success: #38d996;
    --dev-shell-warning: #ffd866;
}

.dev-tool-shell {
    background: linear-gradient(135deg, rgba(18, 22, 33, 0.94), rgba(12, 16, 27, 0.92));
    border: 1px solid var(--dev-shell-border);
    border-radius: 18px;
    padding: 2rem;
    color: var(--dev-shell-text);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
    position: relative;
    overflow: hidden;
}

.dev-tool-shell::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(circle at top right, rgba(96, 117, 255, 0.25), transparent 55%),
        radial-gradient(circle at bottom left, rgba(56, 217, 150, 0.2), transparent 45%);
    opacity: 0.9;
}

.dev-tool-shell > * {
    position: relative;
    z-index: 1;
}

.dev-tool-shell__headline {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.dev-tool-shell__headline h1 {
    font-family: "JetBrains Mono", "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: clamp(1.5rem, 2vw + 1rem, 2.25rem);
    margin: 0;
    letter-spacing: -0.01em;
}

.dev-tool-shell__headline p {
    margin: 0;
    color: var(--dev-shell-muted);
    font-size: 0.95rem;
    max-width: 52ch;
}

.dev-tool-shell__grid {
    display: grid;
    gap: 1.75rem;
}

@media (min-width: 992px) {
    .dev-tool-shell__grid {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
        align-items: start;
    }
}

.dev-tool-pane {
    background: rgba(13, 18, 32, 0.75);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.dev-tool-pane__header {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: space-between;
    align-items: center;
}

.dev-tool-pane__header-title {
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--dev-shell-muted);
}

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

.dev-tool-select {
    display: inline-flex;
    flex-direction: column;
    gap: 0.35rem;
    font-size: 0.85rem;
    color: var(--dev-shell-muted);
}

.dev-tool-select select {
    background: rgba(18, 24, 39, 0.86);
    border: 1px solid rgba(96, 117, 255, 0.35);
    border-radius: 10px;
    padding: 0.55rem 0.85rem;
    color: var(--dev-shell-text);
    font-size: 0.95rem;
    font-family: "JetBrains Mono", "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    min-width: 160px;
}

.dev-tool-dropzone {
    border: 2px dashed rgba(96, 117, 255, 0.45);
    border-radius: 14px;
    padding: 1.25rem;
    text-align: center;
    font-size: 0.9rem;
    color: var(--dev-shell-muted);
    background: rgba(12, 16, 29, 0.65);
    transition: all 0.25s ease;
    position: relative;
}

.dev-tool-dropzone.is-dragover {
    border-color: rgba(56, 217, 150, 0.65);
    background: rgba(24, 35, 60, 0.85);
    color: var(--dev-shell-text);
}

.dev-tool-dropzone button {
    background: none;
    border: none;
    color: var(--dev-shell-text);
    font-weight: 600;
    text-decoration: underline;
    cursor: pointer;
    font-family: inherit;
}

.dev-tool-editor {
    position: relative;
}

.dev-tool-editor textarea,
.dev-tool-editor pre,
.dev-tool-editor input[type="text"] {
    width: 100%;
    min-height: 320px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(11, 15, 26, 0.85);
    padding: 1.1rem 1.25rem;
    color: var(--dev-shell-text);
    font-size: 0.95rem;
    font-family: "JetBrains Mono", "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    resize: vertical;
    line-height: 1.55;
    box-shadow: inset 0 0 0 1px rgba(96, 117, 255, 0.08);
    overflow: auto;
    white-space: pre;
}

.dev-tool-editor input[type="text"] {
    min-height: 54px;
    white-space: normal;
}

.dev-tool-editor textarea:focus {
    outline: none;
    border-color: rgba(96, 117, 255, 0.55);
    box-shadow: 0 0 0 2px rgba(96, 117, 255, 0.18);
}

.dev-tool-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.dev-tool-button {
    border-radius: 999px;
    border: 0;
    padding: 0.65rem 1.35rem;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    cursor: pointer;
    display: inline-flex;
    gap: 0.5rem;
    align-items: center;
    justify-content: center;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.dev-tool-button[data-variant="primary"] {
    background: linear-gradient(135deg, rgba(96, 117, 255, 0.9), rgba(96, 117, 255, 0.65));
    color: #fff;
    box-shadow: 0 10px 30px rgba(96, 117, 255, 0.35);
}

.dev-tool-button[data-variant="ghost"] {
    background: rgba(255, 255, 255, 0.06);
    color: var(--dev-shell-text);
}

.dev-tool-button[data-state="copied"]::after {
    content: "Copied";
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-left: 0.35rem;
    color: var(--dev-shell-success);
}

.dev-tool-button:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.55);
    outline-offset: 3px;
}

.dev-tool-button:active {
    transform: scale(0.98);
}

.dev-tool-tabs {
    display: inline-flex;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 999px;
    padding: 0.35rem;
    gap: 0.35rem;
}

.dev-tool-tabs button {
    border: 0;
    border-radius: 999px;
    padding: 0.45rem 1.1rem;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    background: transparent;
    color: var(--dev-shell-muted);
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
}

.dev-tool-tabs button[aria-selected="true"] {
    background: var(--dev-shell-tab-active);
    color: #fff;
}

.dev-tool-panel {
    display: none;
}

.dev-tool-panel[aria-hidden="false"] {
    display: block;
}

.dev-tool-output {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.dev-tool-output__surface {
    background: rgba(8, 11, 20, 0.95);
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 1.1rem 1.25rem;
    min-height: 320px;
    overflow: auto;
    font-family: "JetBrains Mono", "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 0.95rem;
    line-height: 1.55;
    white-space: pre;
}

.dev-tool-output__surface[data-empty="true"]::before {
    content: "Output will appear here";
    color: var(--dev-shell-muted);
}

.dev-tool-status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--dev-shell-muted);
}

.dev-tool-status[data-status="success"] {
    color: var(--dev-shell-success);
}

.dev-tool-status[data-status="error"] {
    color: var(--dev-shell-error);
}

.dev-tool-status[data-status="loading"]::before {
    content: "";
    width: 1rem;
    height: 1rem;
    border-radius: 999px;
    border: 2px solid rgba(255, 255, 255, 0.12);
    border-top-color: rgba(255, 255, 255, 0.65);
    animation: dev-tool-spin 0.9s linear infinite;
}

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

.dev-tool-errors {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.dev-tool-errors__item {
    background: rgba(255, 107, 129, 0.12);
    border: 1px solid rgba(255, 107, 129, 0.35);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    color: var(--dev-shell-text);
    line-height: 1.5;
}

.dev-tool-cheatsheet {
    background: rgba(7, 10, 18, 0.85);
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 1rem 1.25rem;
    font-size: 0.9rem;
    color: var(--dev-shell-muted);
}

.dev-tool-cheatsheet summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--dev-shell-text);
}

.dev-tool-cheatsheet ul {
    padding-left: 1.25rem;
    margin-top: 0.75rem;
    margin-bottom: 0;
    list-style: square;
}

.dev-tool-cheatsheet code {
    color: var(--dev-shell-warning);
}

.dev-tool-match-grid {
    display: grid;
    gap: 0.85rem;
}

.dev-tool-match {
    background: rgba(96, 117, 255, 0.12);
    border: 1px solid rgba(96, 117, 255, 0.35);
    border-radius: 12px;
    padding: 0.85rem 1rem;
}

.dev-tool-match__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--dev-shell-muted);
    margin-bottom: 0.5rem;
}

.dev-tool-match__value {
    font-family: "JetBrains Mono", "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 0.95rem;
}

.dev-tool-highlighted {
    white-space: pre-wrap;
    word-break: break-word;
    background: rgba(7, 10, 18, 0.85);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    padding: 1rem 1.15rem;
    min-height: 220px;
}

.dev-tool-highlighted mark {
    background: rgba(96, 117, 255, 0.35);
    color: #fff;
    padding: 0 0.15em;
    border-radius: 4px;
}

.dev-tool-inline-help {
    color: var(--dev-shell-muted);
    font-size: 0.85rem;
}

.dev-tool-pane .custom-control-label,
.dev-tool-pane .custom-control-input ~ .custom-control-label {
    color: var(--dev-shell-text);
    font-size: 0.9rem;
}

.dev-tool-pane .custom-control-input:focus ~ .custom-control-label::before {
    box-shadow: 0 0 0 0.2rem rgba(96, 117, 255, 0.35);
    border-color: rgba(96, 117, 255, 0.65);
}

.dev-tool-pane .custom-control-input:checked ~ .custom-control-label::before {
    background-color: rgba(96, 117, 255, 0.85);
    border-color: rgba(96, 117, 255, 0.85);
}

.token-key {
    color: #ffd866;
}

.token-string {
    color: #c3ff9d;
}

.token-number {
    color: #76b5ff;
}

.token-boolean,
.token-null {
    color: #ff9ac1;
}

.token-tag {
    color: #ffd866;
}

.token-attr {
    color: #76b5ff;
}

.token-comment {
    color: rgba(154, 160, 187, 0.6);
}

.token-punctuation {
    color: rgba(248, 249, 255, 0.65);
}

@media (max-width: 575.98px) {
    .dev-tool-shell {
        padding: 1.5rem;
        border-radius: 14px;
    }

    .dev-tool-editor textarea,
    .dev-tool-editor pre,
    .dev-tool-output__surface {
        min-height: 240px;
    }
}