.af-tip-calculator {
    --af-tip-border: #d9dee7;
    --af-tip-surface: #ffffff;
    --af-tip-muted: #596579;
    --af-tip-text: #182033;
    --af-tip-accent: #087f8c;
    --af-tip-accent-dark: #066873;
    --af-tip-accent-soft: #e9f7f8;
    max-width: 680px;
    margin: 24px auto;
    padding: 24px;
    color: var(--af-tip-text);
    background: var(--af-tip-surface);
    border: 1px solid var(--af-tip-border);
    border-radius: 8px;
    box-shadow: 0 14px 36px rgba(24, 32, 51, 0.08);
    font-family: inherit;
}

.af-tip-calculator *,
.af-tip-calculator *::before,
.af-tip-calculator *::after {
    box-sizing: border-box;
}

.af-tip-calculator__header {
    margin-bottom: 20px;
}

.af-tip-calculator__title {
    margin: 0 0 6px;
    font-size: clamp(1.35rem, 1rem + 1vw, 1.8rem);
    line-height: 1.2;
    color: var(--af-tip-text);
}

.af-tip-calculator__subtitle {
    margin: 0;
    color: var(--af-tip-muted);
    font-size: 1rem;
}

.af-tip-calculator__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.af-tip-calculator__field {
    display: grid;
    gap: 7px;
    min-width: 0;
    font-weight: 600;
}

.af-tip-calculator__field span {
    color: var(--af-tip-text);
    font-size: 0.95rem;
}

.af-tip-calculator__field input {
    width: 100%;
    min-height: 46px;
    padding: 10px 12px;
    color: var(--af-tip-text);
    background: #fbfcfe;
    border: 1px solid var(--af-tip-border);
    border-radius: 6px;
    font: inherit;
}

.af-tip-calculator__field input:focus {
    border-color: var(--af-tip-accent);
    box-shadow: 0 0 0 3px rgba(8, 127, 140, 0.16);
    outline: none;
}

.af-tip-calculator__presets {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 18px 0;
}

.af-tip-calculator__presets button {
    min-height: 38px;
    padding: 8px 14px;
    color: var(--af-tip-accent-dark);
    background: var(--af-tip-accent-soft);
    border: 1px solid rgba(8, 127, 140, 0.2);
    border-radius: 6px;
    cursor: pointer;
    font: inherit;
    font-weight: 700;
}

.af-tip-calculator__presets button:hover,
.af-tip-calculator__presets button:focus {
    color: #ffffff;
    background: var(--af-tip-accent);
    outline: none;
}

.af-tip-calculator__rounding {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    min-height: 40px;
    margin: 0 0 18px;
    color: var(--af-tip-text);
    cursor: pointer;
    font-weight: 700;
}

.af-tip-calculator__rounding input {
    width: 18px;
    height: 18px;
    accent-color: var(--af-tip-accent);
    cursor: pointer;
}

.af-tip-calculator__results {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.af-tip-calculator__results div {
    min-width: 0;
    padding: 16px;
    background: #f6f8fb;
    border: 1px solid var(--af-tip-border);
    border-radius: 8px;
}

.af-tip-calculator__results span {
    display: block;
    margin-bottom: 6px;
    color: var(--af-tip-muted);
    font-size: 0.9rem;
}

.af-tip-calculator__results strong {
    display: block;
    overflow-wrap: anywhere;
    color: var(--af-tip-text);
    font-size: 1.25rem;
    line-height: 1.2;
}

@media (max-width: 640px) {
    .af-tip-calculator {
        padding: 18px;
    }

    .af-tip-calculator__grid,
    .af-tip-calculator__results {
        grid-template-columns: 1fr;
    }
}