.rechenpower {
    --rp-primary: #2563eb;
    --rp-primary-hover: #1d4ed8;
    --rp-text: #172033;
    --rp-muted: #526176;
    --rp-border: #cbd5e1;
    --rp-background: #ffffff;
    --rp-soft: #f4f7fb;
    --rp-error: #a61b1b;

    box-sizing: border-box;
    width: 100%;
    max-width: 850px;
    margin: 24px auto;
    padding: clamp(18px, 4vw, 32px);
    color: var(--rp-text);
    background: var(--rp-background);
    border: 1px solid var(--rp-border);
    border-radius: 16px;
    box-shadow: 0 8px 30px rgb(15 23 42 / 5%);
    font-family: inherit;
    font-size: 16px;
    line-height: 1.55;
    color-scheme: light;
}

.rechenpower *,
.rechenpower *::before,
.rechenpower *::after {
    box-sizing: border-box;
}

.rechenpower [hidden] {
    display: none !important;
}

.rechenpower .rp-title {
    margin: 0 0 10px;
    color: var(--rp-text);
    font-size: clamp(23px, 4vw, 30px);
    line-height: 1.2;
}

.rechenpower .rp-note,
.rechenpower .rp-help,
.rechenpower .rp-format {
    color: var(--rp-muted);
    font-size: 14px;
}

.rechenpower .rp-note {
    margin: 0 0 22px;
    padding: 12px 14px;
    background: var(--rp-soft);
    border-radius: 8px;
    white-space: pre-line;
}

.rechenpower .rp-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.rechenpower .rp-field {
    min-width: 0;
}

.rechenpower .rp-wide {
    grid-column: 1 / -1;
}

.rechenpower .rp-label {
    display: block;
    margin: 0 0 7px;
    color: var(--rp-text);
    font-size: 15px;
    font-weight: 650;
}

.rechenpower input,
.rechenpower select,
.rechenpower textarea {
    display: block;
    width: 100%;
    min-height: 46px;
    margin: 0;
    padding: 11px 12px;
    color: var(--rp-text);
    background: #fff;
    border: 1px solid var(--rp-border);
    border-radius: 8px;
    font: inherit;
    line-height: 1.4;
    box-shadow: none;
}

.rechenpower textarea {
    min-height: 112px;
    resize: vertical;
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
    font-size: 15px;
}

.rechenpower input:focus-visible,
.rechenpower select:focus-visible,
.rechenpower textarea:focus-visible,
.rechenpower button:focus-visible {
    outline: 3px solid #93c5fd;
    outline-offset: 2px;
}

.rechenpower [aria-invalid="true"] {
    border-color: var(--rp-error);
}

.rechenpower .rp-help {
    display: block;
    margin-top: 6px;
}

.rechenpower .rp-format {
    margin: 16px 0 0;
}

.rechenpower .rp-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.rechenpower button {
    width: auto;
    min-height: 46px;
    margin: 0;
    padding: 11px 20px;
    border: 1px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    font: inherit;
    font-weight: 650;
    text-transform: none;
    letter-spacing: normal;
}

.rechenpower .rp-submit {
    color: #fff;
    background: var(--rp-primary);
}

.rechenpower .rp-submit:hover {
    background: var(--rp-primary-hover);
}

.rechenpower .rp-reset {
    color: var(--rp-text);
    background: var(--rp-soft);
    border-color: var(--rp-border);
}

.rechenpower .rp-error {
    margin: 20px 0 0;
    padding: 14px;
    color: var(--rp-error);
    background: #fff1f2;
    border: 1px solid #fecdd3;
    border-radius: 8px;
}

.rechenpower .rp-result {
    margin-top: 24px;
    padding: 18px;
    background: var(--rp-soft);
    border-radius: 10px;
}

.rechenpower .rp-result h3 {
    margin: 0 0 12px;
    color: var(--rp-text);
    font-size: 19px;
}

.rechenpower .rp-result dl {
    margin: 0;
}

.rechenpower .rp-result-row {
    padding: 11px 0;
    border-bottom: 1px solid var(--rp-border);
}

.rechenpower .rp-result-row:first-child {
    padding-top: 0;
}

.rechenpower .rp-result-row:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.rechenpower .rp-result dt {
    margin: 0 0 3px;
    color: var(--rp-muted);
    font-size: 14px;
}

.rechenpower .rp-result dd {
    margin: 0;
    color: var(--rp-text);
    font-size: 19px;
    font-weight: 650;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

@media (max-width: 560px) {
    .rechenpower .rp-grid {
        grid-template-columns: 1fr;
    }

    .rechenpower .rp-actions button {
        flex: 1 1 auto;
    }
}