.atc-calculator,
.atc-calculator * {
    box-sizing: border-box;
}

.atc-calculator {
    --atc-primary: #0e96ec;
    --atc-primary-dark: #076fb2;
    --atc-green: #19b35b;
    --atc-red: #e64242;
    --atc-ink: #162033;
    --atc-muted: #667085;
    --atc-soft: #f4f8fb;
    --atc-border: #dde7ef;
    --atc-white: #ffffff;
    --atc-shadow: 0 18px 45px rgba(22, 32, 51, 0.10);
    width: 100%;
    max-width: 1180px;
    margin: 30px auto;
    padding: 28px;
    color: var(--atc-ink);
    font-family: inherit;
    background: linear-gradient(135deg, #f8fbff 0%, #eef7ff 100%);
    border: 1px solid var(--atc-border);
    border-radius: 28px;
    box-shadow: var(--atc-shadow);
}

.atc-calc__header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 28px;
}

.atc-calc__eyebrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 28px;
    padding: 5px 14px;
    margin-bottom: 10px;
    color: var(--atc-primary-dark);
    background: rgba(14, 150, 236, 0.12);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.atc-calc__header h2 {
    margin: 0;
    color: var(--atc-ink);
    font-size: clamp(30px, 5vw, 54px);
    line-height: 1.05;
    font-weight: 800;
}

.atc-calc__header p {
    margin: 12px 0 0;
    color: var(--atc-muted);
    font-size: 17px;
}

.atc-calc__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.88fr);
    gap: 22px;
    align-items: stretch;
}

.atc-calc__card,
.atc-calc__result-card {
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid rgba(221, 231, 239, 0.95);
    border-radius: 22px;
    box-shadow: 0 12px 30px rgba(22, 32, 51, 0.07);
}

.atc-calc__card {
    padding: 24px;
}

.atc-calc__card-head {
    margin-bottom: 20px;
}

.atc-calc__card-head h3 {
    margin: 0;
    color: var(--atc-ink);
    font-size: 22px;
    line-height: 1.2;
    font-weight: 800;
}

.atc-calc__card-head p {
    margin: 7px 0 0;
    color: var(--atc-muted);
    font-size: 14px;
}

.atc-calc__form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 15px;
}

.atc-calc__field {
    display: block;
    margin: 0;
}

.atc-calc__field span {
    display: block;
    margin-bottom: 7px;
    color: #344054;
    font-size: 13px;
    font-weight: 700;
}

.atc-calc__field input {
    display: block;
    width: 100%;
    min-height: 48px;
    padding: 11px 13px;
    color: var(--atc-ink);
    background: #fff;
    border: 1px solid #cfdce8;
    border-radius: 13px;
    outline: none;
    font-size: 15px;
    line-height: 1.3;
    transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.atc-calc__field input:focus {
    border-color: var(--atc-primary);
    box-shadow: 0 0 0 4px rgba(14, 150, 236, 0.13);
}

.atc-calc__field input.atc-calc__input-error {
    border-color: var(--atc-red);
    box-shadow: 0 0 0 4px rgba(230, 66, 66, 0.12);
}

.atc-calc__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
}

.atc-calc__button {
    appearance: none;
    min-height: 48px;
    padding: 12px 22px;
    color: #fff;
    background: var(--atc-primary);
    border: 1px solid var(--atc-primary);
    border-radius: 13px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 800;
    line-height: 1;
    transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.atc-calc__button:hover,
.atc-calc__button:focus {
    background: var(--atc-primary-dark);
    border-color: var(--atc-primary-dark);
    box-shadow: 0 10px 22px rgba(14, 150, 236, 0.28);
    transform: translateY(-1px);
}

.atc-calc__button--ghost {
    color: var(--atc-primary-dark);
    background: #fff;
    border-color: #b9d9ef;
}

.atc-calc__button--ghost:hover,
.atc-calc__button--ghost:focus {
    color: #fff;
}

.atc-calc__mini-results {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: 18px;
}

.atc-calc__mini-results div {
    padding: 15px;
    background: var(--atc-soft);
    border: 1px solid #dcebf7;
    border-radius: 16px;
}

.atc-calc__mini-results span,
.atc-calc__result-card span {
    display: block;
    color: var(--atc-muted);
    font-size: 13px;
    font-weight: 700;
}

.atc-calc__mini-results strong {
    display: block;
    margin-top: 5px;
    color: var(--atc-primary-dark);
    font-size: 24px;
    line-height: 1.1;
}

.atc-calc__chart-card {
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.atc-calc__chart-wrap {
    position: relative;
    width: min(100%, 420px);
    margin: 6px auto 18px;
    aspect-ratio: 1;
}

.atc-calc__chart-wrap canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.atc-calc__chart-center {
    position: absolute;
    inset: 50% auto auto 50%;
    width: 46%;
    min-width: 145px;
    padding: 15px 10px;
    text-align: center;
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid #e5eef6;
    border-radius: 20px;
    box-shadow: 0 10px 26px rgba(22, 32, 51, 0.08);
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.atc-calc__chart-center span {
    display: block;
    color: var(--atc-muted);
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.atc-calc__chart-center strong {
    display: block;
    margin-top: 5px;
    color: var(--atc-ink);
    font-size: clamp(19px, 3vw, 27px);
    line-height: 1.05;
}

.atc-calc__legend {
    display: grid;
    gap: 10px;
    margin-top: auto;
}

.atc-calc__legend-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 13px;
    background: #fff;
    border: 1px solid #e1ebf3;
    border-radius: 14px;
}

.atc-calc__legend-left {
    display: flex;
    align-items: center;
    gap: 9px;
    min-width: 0;
}

.atc-calc__legend-swatch {
    width: 12px;
    height: 12px;
    flex: 0 0 12px;
    border-radius: 99px;
}

.atc-calc__legend-title {
    color: #344054;
    font-size: 13px;
    font-weight: 800;
}

.atc-calc__legend-value {
    white-space: nowrap;
    color: var(--atc-ink);
    font-size: 13px;
    font-weight: 800;
}

.atc-calc__results-grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 14px;
    margin-top: 22px;
}

.atc-calc__result-card {
    min-height: 106px;
    padding: 18px;
}

.atc-calc__result-card strong {
    display: block;
    margin-top: 10px;
    color: var(--atc-ink);
    font-size: clamp(20px, 2.4vw, 28px);
    line-height: 1.1;
    overflow-wrap: anywhere;
}

.atc-calc__note {
    margin: 18px 4px 0;
    color: var(--atc-muted);
    font-size: 13px;
    text-align: center;
}

@media (max-width: 1060px) {
    .atc-calc__grid {
        grid-template-columns: 1fr;
    }

    .atc-calc__results-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 720px) {
    .atc-calculator {
        padding: 18px;
        border-radius: 22px;
    }

    .atc-calc__card {
        padding: 18px;
    }

    .atc-calc__form-grid,
    .atc-calc__mini-results,
    .atc-calc__results-grid {
        grid-template-columns: 1fr;
    }

    .atc-calc__actions {
        display: grid;
        grid-template-columns: 1fr;
    }

    .atc-calc__button {
        width: 100%;
    }
}