.hill-tool {
    --hill-panel: #ffffff;
    --hill-panel-soft: #fcfcfd;
    --hill-text: #152033;
    --hill-muted: #687385;
    --hill-border: #d8dbe0;
    --hill-border-strong: #c9ced6;
    --hill-success: #295534;
    --hill-success-soft: #eef8ef;
    --hill-success-border: #cfe2d1;
    --hill-warning: #6a5315;
    --hill-warning-soft: #fff5e3;
    --hill-warning-border: #ecd8ab;
    --hill-danger: #9b3333;
    --hill-danger-soft: rgba(155, 51, 51, 0.08);
    --hill-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    color: var(--hill-text);
    font-family: "Inter", var(--font-sans);
}

html[data-theme="dark"] .hill-tool {
    --hill-panel: #181d24;
    --hill-panel-soft: #20252d;
    --hill-text: #f2f5fb;
    --hill-muted: #aeb8c5;
    --hill-border: #2f3742;
    --hill-border-strong: #3a4452;
    --hill-success: #9adca5;
    --hill-success-soft: rgba(64, 124, 74, 0.22);
    --hill-success-border: rgba(154, 220, 165, 0.24);
    --hill-warning: #f3d18b;
    --hill-warning-soft: rgba(138, 99, 31, 0.18);
    --hill-warning-border: rgba(243, 209, 139, 0.28);
    --hill-danger: #ff9f9f;
    --hill-danger-soft: rgba(95, 28, 28, 0.32);
}

.hill-panel,
.hill-field {
    display: grid;
    gap: 12px;
    min-width: 0;
}

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

.hill-mini strong,
.hill-pill strong {
    color: var(--hill-text);
}

.hill-mini code,
.hill-note code {
    display: inline-block;
    padding: 2px 7px;
    border: 1px solid var(--hill-border);
    border-radius: 999px;
    background: var(--hill-panel);
    color: var(--hill-text);
    font-family: var(--hill-mono);
    font-size: 0.86em;
    font-weight: 700;
}

.hill-matrix-size-row {
    margin-top: 2px;
}

.hill-option-spacer {
    width: 20px;
    height: 20px;
    flex: 0 0 auto;
}

.hill-matrix-grid {
    display: grid;
    gap: 8px;
    min-width: 0;
}

.hill-matrix-input {
    width: 100%;
    min-width: 0;
    min-height: 46px;
    padding: 10px 8px;
    border: 1px solid var(--hill-border-strong);
    border-radius: 12px;
    background: var(--hill-panel);
    color: var(--hill-text);
    font-family: var(--hill-mono);
    font-size: 0.96rem;
    font-weight: 700;
    line-height: 1.2;
    text-align: center;
    outline: none;
    transition: border-color 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

.hill-matrix-input:focus,
.hill-textarea:focus,
.hill-button:focus-visible {
    border-color: rgba(63, 127, 216, 0.55);
    box-shadow: 0 0 0 3px rgba(63, 127, 216, 0.12);
    outline: none;
}

.hill-status-box {
    border: 1px solid var(--hill-border);
    border-radius: 14px;
    padding: 11px 12px;
    background: var(--hill-panel);
    color: var(--hill-muted);
    font-size: 0.9rem;
    line-height: 1.45;
}

.hill-status-box strong {
    color: var(--hill-text);
    font-weight: 800;
}

.hill-status-box.is-ok {
    border-color: var(--hill-success-border);
    background: var(--hill-success-soft);
    color: var(--hill-success);
}

.hill-status-box.is-warning {
    border-color: var(--hill-warning-border);
    background: var(--hill-warning-soft);
    color: var(--hill-warning);
}

.hill-helper-alert {
    color: var(--hill-danger);
    font-weight: 700;
}

.hill-tool .cipher-option-row.is-disabled,
.hill-tool .cipher-stepper.is-disabled {
    opacity: 0.56;
}

.hill-textarea {
    width: 100%;
    min-width: 0;
    min-height: 240px;
    padding: 12px;
    border: 1px solid var(--hill-border);
    border-radius: 14px;
    background: var(--hill-panel);
    color: var(--hill-text);
    font-family: var(--hill-mono);
    font-size: 0.94rem;
    line-height: 1.48;
    outline: none;
    resize: vertical;
    transition: border-color 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

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

.hill-textarea::placeholder,
.hill-matrix-input::placeholder {
    color: var(--hill-muted);
}

.hill-button[disabled] {
    opacity: 0.62;
    cursor: not-allowed;
}

.hill-copy-inline.is-copied {
    color: var(--hill-success);
    border-color: var(--hill-success-border);
    background: var(--hill-success-soft);
}

.hill-copy-inline.is-failed {
    color: var(--hill-warning);
    border-color: var(--hill-warning-border);
    background: var(--hill-warning-soft);
}

@media (min-width: 1024px) {
    .hill-matrix-grid {
        gap: 6px;
    }

    .hill-matrix-input {
        min-height: 40px;
        padding: 8px 6px;
        border-radius: 10px;
        font-size: 0.9rem;
    }

    .hill-status-box {
        padding: 10px 11px;
        font-size: 0.85rem;
    }

    .hill-textarea {
        min-height: 0;
        height: 100%;
        resize: none;
    }
}

@media (max-width: 560px) {
    .hill-textarea {
        min-height: 220px;
    }

    .hill-matrix-grid {
        gap: 6px;
    }

    .hill-matrix-input {
        min-height: 40px;
        border-radius: 10px;
        font-size: 0.86rem;
    }
}