.kniwamed-room-calculator {
    --krc-bg: #f3f2e7;
    --krc-surface: #ffffff;
    --krc-surface-soft: #eef3f0;
    --krc-border: #d6ddd9;
    --krc-text: #1f2925;
    --krc-muted: #53605b;
    --krc-green: #a7c0b7;
    --krc-green-dark: #26443a;
    --krc-red: #c53d52;
    --krc-red-dark: #a92e42;
    --krc-warning: #fff6dc;
    --krc-warning-border: #d4a62f;
    --krc-error: #8f1f31;
    color: var(--krc-text);
    font-family: inherit;
    margin: 2rem 0;
}

.kniwamed-room-calculator *,
.kniwamed-room-calculator *::before,
.kniwamed-room-calculator *::after {
    box-sizing: border-box;
}

.krc-shell {
    background: var(--krc-bg);
    border-radius: 24px;
    padding: clamp(1.25rem, 3vw, 2.5rem);
}

.krc-heading {
    max-width: 760px;
    margin-bottom: 1.5rem;
}

.krc-heading h2 {
    color: var(--krc-text);
    font-size: clamp(1.7rem, 3vw, 2.35rem);
    line-height: 1.15;
    margin: 0 0 0.65rem;
}

.krc-heading p {
    color: var(--krc-muted);
    margin: 0;
}

.krc-eyebrow {
    color: var(--krc-green-dark) !important;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    margin-bottom: 0.55rem !important;
    text-transform: uppercase;
}

.krc-grid {
    align-items: stretch;
    display: grid;
    gap: 1.25rem;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.8fr);
}

.krc-form,
.krc-result {
    background: var(--krc-surface);
    border: 1px solid var(--krc-border);
    border-radius: 18px;
    padding: clamp(1rem, 2.5vw, 1.6rem);
}

.krc-fieldset {
    border: 0;
    margin: 0 0 1.25rem;
    padding: 0;
}

.krc-fieldset legend,
.krc-field label {
    color: var(--krc-text);
    display: block;
    font-size: 0.98rem;
    font-weight: 700;
    margin-bottom: 0.55rem;
}

.krc-choice-grid {
    display: grid;
    gap: 0.75rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.krc-choice {
    cursor: pointer;
    display: block;
    margin: 0;
    position: relative;
}

.krc-choice input {
    opacity: 0;
    pointer-events: none;
    position: absolute;
}

.krc-choice span {
    background: #f8faf9;
    border: 2px solid var(--krc-border);
    border-radius: 14px;
    display: block;
    height: 100%;
    min-height: 104px;
    padding: 0.95rem;
    transition: border-color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

.krc-choice strong,
.krc-choice small {
    display: block;
}

.krc-choice strong {
    color: var(--krc-text);
    margin-bottom: 0.28rem;
}

.krc-choice small {
    color: var(--krc-muted);
    font-size: 0.82rem;
    line-height: 1.35;
}

.krc-choice input:checked + span {
    background: var(--krc-surface-soft);
    border-color: var(--krc-green-dark);
    box-shadow: 0 0 0 2px rgba(38, 68, 58, 0.08);
}

.krc-choice input:focus-visible + span {
    outline: 3px solid rgba(197, 61, 82, 0.3);
    outline-offset: 2px;
}

.krc-time-fields {
    display: grid;
    gap: 0.9rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-bottom: 1rem;
}

.krc-time-fields[hidden] {
    display: none;
}

.krc-field {
    margin-bottom: 1rem;
}

.krc-field select,
.krc-field input {
    appearance: none;
    background-color: #fff;
    border: 1px solid #bcc7c2;
    border-radius: 10px;
    color: var(--krc-text);
    font: inherit;
    min-height: 46px;
    padding: 0.65rem 0.75rem;
    width: 100%;
}

.krc-field select {
    background-image: linear-gradient(45deg, transparent 50%, #50605a 50%), linear-gradient(135deg, #50605a 50%, transparent 50%);
    background-position: calc(100% - 17px) 20px, calc(100% - 12px) 20px;
    background-repeat: no-repeat;
    background-size: 5px 5px, 5px 5px;
    padding-right: 2.25rem;
}

.krc-field select:focus,
.krc-field input:focus {
    border-color: var(--krc-green-dark);
    box-shadow: 0 0 0 3px rgba(38, 68, 58, 0.12);
    outline: none;
}

.krc-help {
    color: var(--krc-muted);
    display: block;
    font-size: 0.8rem;
    line-height: 1.4;
    margin-top: 0.35rem;
}

.krc-inline-note,
.krc-error,
.krc-result-notice {
    border-radius: 10px;
    font-size: 0.88rem;
    line-height: 1.45;
    padding: 0.75rem 0.85rem;
}

.krc-inline-note:empty,
.krc-result-notice:empty {
    display: none;
}

.krc-inline-note {
    background: var(--krc-surface-soft);
    color: var(--krc-green-dark);
}

.krc-error {
    background: #fff0f2;
    border: 1px solid #e5a3ae;
    color: var(--krc-error);
    margin-top: 0.8rem;
}

.krc-result {
    border-top: 8px solid var(--krc-red);
    display: flex;
    flex-direction: column;
}

.krc-result-label {
    color: var(--krc-muted);
    font-size: 0.9rem;
    font-weight: 700;
    margin: 0 0 0.35rem;
    text-transform: uppercase;
}

.krc-result-total {
    color: var(--krc-text);
    font-size: clamp(2.25rem, 5vw, 3.4rem);
    font-weight: 800;
    letter-spacing: -0.045em;
    line-height: 1;
    margin-bottom: 0.35rem;
}

.krc-result-tax {
    color: var(--krc-muted);
    font-size: 0.82rem;
    margin: 0 0 1.1rem;
}

.krc-breakdown {
    border-bottom: 1px solid var(--krc-border);
    border-top: 1px solid var(--krc-border);
    margin: 0 0 1rem;
    padding: 0.7rem 0;
}

.krc-breakdown-row {
    align-items: baseline;
    display: flex;
    gap: 1rem;
    justify-content: space-between;
    padding: 0.38rem 0;
}

.krc-breakdown dt,
.krc-breakdown dd {
    margin: 0;
}

.krc-breakdown dt {
    color: var(--krc-muted);
    font-size: 0.88rem;
}

.krc-breakdown dd {
    color: var(--krc-text);
    font-size: 0.9rem;
    font-weight: 700;
    text-align: right;
}

.krc-result-notice {
    background: var(--krc-warning);
    border-left: 4px solid var(--krc-warning-border);
    color: #5d4b18;
    margin-bottom: 1rem;
}

.krc-actions {
    display: grid;
    gap: 0.7rem;
    margin-top: auto;
}

.krc-button {
    align-items: center;
    border: 0;
    border-radius: 12px;
    cursor: pointer;
    display: inline-flex;
    font: inherit;
    font-weight: 700;
    justify-content: center;
    min-height: 46px;
    padding: 0.7rem 1rem;
    text-align: center;
    text-decoration: none !important;
    transition: background 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.krc-button:hover {
    transform: translateY(-1px);
}

.krc-button-primary {
    background: var(--krc-red);
    box-shadow: 0 7px 14px rgba(197, 61, 82, 0.22);
    color: #fff !important;
}

.krc-button-primary:hover,
.krc-button-primary:focus {
    background: var(--krc-red-dark);
}

.krc-button-secondary {
    background: var(--krc-surface-soft);
    color: var(--krc-green-dark);
}

.krc-text-link {
    color: var(--krc-green-dark);
    font-size: 0.88rem;
    font-weight: 700;
    text-align: center;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.krc-footnotes {
    color: var(--krc-muted);
    font-size: 0.83rem;
    line-height: 1.5;
    margin-top: 1rem;
}

.krc-footnotes p {
    margin: 0.45rem 0 0;
}

@media (max-width: 900px) {
    .krc-grid {
        grid-template-columns: 1fr;
    }

    .krc-result {
        min-height: auto;
    }
}

@media (max-width: 700px) {
    .krc-choice-grid {
        grid-template-columns: 1fr;
    }

    .krc-choice span {
        min-height: auto;
    }
}

@media (max-width: 480px) {
    .krc-shell {
        border-radius: 16px;
        padding: 1rem;
    }

    .krc-time-fields {
        grid-template-columns: 1fr;
    }
}