.xor-tool {
    --xor-panel: #ffffff;
    --xor-panel-soft: #fcfcfd;
    --xor-text: #101418;
    --xor-muted: #5a6872;
    --xor-border: #d8dee4;
    --xor-amber: #fff5e3;
    --xor-amber-border: #ecd8ab;
    --xor-green: #eef8ef;
    --xor-green-border: #cfe2d1;
    --xor-red: #f3e4e4;
    --xor-red-border: #e9d3d3;
    --xor-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    color: var(--xor-text);
    font-family: "Inter", var(--font-sans);
}

html[data-theme="dark"] .xor-tool {
    --xor-panel: #181b1f;
    --xor-panel-soft: #20242a;
    --xor-text: #f1f3f5;
    --xor-muted: #9aa2ab;
    --xor-border: #2a3037;
    --xor-amber: rgba(116, 88, 26, 0.2);
    --xor-amber-border: #6f5623;
    --xor-green: rgba(34, 84, 41, 0.22);
    --xor-green-border: #366441;
    --xor-red: rgba(100, 46, 52, 0.24);
    --xor-red-border: #6b3a40;
}

.xor-tool * {
    box-sizing: border-box;
}

.xor-topbar,
.xor-status,
.xor-pill-row,
.xor-textarea-header {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.xor-topbar,
.xor-textarea-header {
    justify-content: space-between;
}

.xor-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}

.xor-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-width: 0;
}

.xor-mini,
.xor-helper {
    margin: 0;
    color: var(--xor-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

.xor-code-line {
    width: 100%;
    padding: 9px 10px;
    border: 1px solid var(--xor-border);
    border-radius: 12px;
    background: var(--xor-panel);
    color: var(--xor-text);
    font-family: var(--xor-mono);
    font-size: 0.86rem;
    font-weight: 700;
    line-height: 1.45;
    overflow-wrap: anywhere;
}

.xor-format-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}

.xor-field-row {
    display: grid;
    gap: 6px;
}

.xor-field-row label {
    color: var(--xor-muted);
    font-size: 0.86rem;
    font-weight: 800;
}

.xor-select,
.xor-key-input {
    width: 100%;
    min-height: 42px;
    padding: 9px 10px;
    border: 1px solid var(--xor-border);
    border-radius: 12px;
    background: var(--xor-panel);
    color: var(--xor-text);
    font-weight: 700;
}

.xor-key-input {
    font-family: var(--xor-mono);
}

.xor-helper-message {
    border-radius: 14px;
    padding: 10px 11px;
    border: 1px solid var(--xor-amber-border);
    background: var(--xor-amber);
    color: #79531b;
}

.xor-helper-message.bad {
    border-color: var(--xor-red-border);
    background: var(--xor-red);
    color: #7b363c;
}

html[data-theme="dark"] .xor-helper-message {
    color: #f0d48c;
}

html[data-theme="dark"] .xor-helper-message.bad {
    color: #efb7bd;
}

.xor-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 0;
}

.xor-textarea {
    width: 100%;
    min-width: 0;
    min-height: 210px;
    resize: vertical;
    padding: 10px 12px;
    border: 1px solid var(--xor-border);
    border-radius: 12px;
    background: var(--xor-panel);
    color: var(--xor-text);
    font-family: var(--xor-mono);
    font-size: 14px;
    line-height: 1.45;
    outline: none;
    transition: border-color 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}

.xor-textarea[readonly] {
    background: var(--xor-panel-soft);
}

.xor-textarea.xor-output.has-error {
    border-color: var(--xor-red-border);
    background: #fff5f5;
}

html[data-theme="dark"] .xor-textarea.xor-output.has-error {
    background: rgba(92, 39, 45, 0.22);
}

.xor-textarea:focus,
.xor-key-input:focus,
.xor-select:focus,
.xor-button:focus-visible {
    border-color: rgba(11, 132, 255, 0.55);
    box-shadow: 0 0 0 3px rgba(11, 132, 255, 0.1);
    outline: none;
}

.xor-copy-inline {
    min-height: 32px;
    padding: 0 12px;
    border-radius: 999px;
    font-size: 12px;
    line-height: 1;
    flex: 0 0 auto;
}

.xor-copy-inline.done {
    color: #245e2d;
    border-color: var(--xor-green-border);
    background: var(--xor-green);
}

.xor-copy-inline.error {
    color: #7b5c1c;
    border-color: var(--xor-amber-border);
    background: var(--xor-amber);
}

.xor-byte-section {
    display: grid;
    gap: 10px;
}

.xor-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--xor-border);
    background: var(--xor-panel);
    border-radius: 14px;
}

.xor-byte-table {
    width: 100%;
    min-width: 620px;
    border-collapse: collapse;
    font-family: var(--xor-mono);
    font-size: 0.78rem;
}

.xor-byte-table th,
.xor-byte-table td {
    padding: 8px 9px;
    border-bottom: 1px solid var(--xor-border);
    text-align: left;
    white-space: nowrap;
}

.xor-byte-table th {
    color: var(--xor-muted);
    font-family: "Inter", var(--font-sans);
    font-size: 0.76rem;
    font-weight: 800;
    background: var(--xor-panel-soft);
}

.xor-byte-table tr:last-child td {
    border-bottom: 0;
}

.xor-byte-pill {
    display: inline-flex;
    align-items: center;
    margin-right: 6px;
    border: 1px solid var(--xor-border);
    background: var(--xor-panel-soft);
    border-radius: 999px;
    padding: 3px 7px;
    font-weight: 800;
    color: var(--xor-text);
}

.xor-empty-state {
    border: 1px dashed var(--xor-border);
    border-radius: 14px;
    padding: 12px;
    color: var(--xor-muted);
    background: var(--xor-panel);
    line-height: 1.45;
    font-size: 0.9rem;
    font-weight: 600;
}

@media (min-width: 640px) {
    .xor-format-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 560px) {
    .xor-topbar {
        align-items: stretch;
    }

    .xor-actions {
        width: 100%;
    }

    .xor-textarea {
        min-height: 190px;
    }
}