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

.nadc-calculator {
    --nadc-page: #f5f7fa;
    --nadc-panel: #ffffff;
    --nadc-text: #111827;
    --nadc-muted: #667085;
    --nadc-line: #d9dee7;
    --nadc-soft: #eef3f8;
    --nadc-primary: #1f4f8f;
    --nadc-primary-dark: #173b70;
    --nadc-good: #146c43;
    --nadc-warn: #9a5b00;
    --nadc-bad: #a12727;
    --nadc-shadow: 0 14px 36px rgba(15, 23, 42, 0.08);
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    color: var(--nadc-text);
    font-family: inherit;
    overflow-wrap: anywhere;
}

.nadc-calculator.nadc-dark {
    --nadc-page: #0f172a;
    --nadc-panel: #121c2e;
    --nadc-text: #f8fafc;
    --nadc-muted: #bac5d6;
    --nadc-line: #334155;
    --nadc-soft: #1e293b;
    --nadc-primary: #8dbaff;
    --nadc-primary-dark: #adcfff;
    --nadc-good: #86efac;
    --nadc-warn: #facc15;
    --nadc-bad: #fca5a5;
    --nadc-shadow: 0 14px 36px rgba(0, 0, 0, 0.28);
}

.nadc-shell {
    width: min(100%, 920px);
    margin: 0 auto;
    padding: clamp(16px, 4vw, 34px);
    background: var(--nadc-page);
    border: 1px solid var(--nadc-line);
    border-radius: 22px;
    box-shadow: var(--nadc-shadow);
    min-width: 0;
}

.nadc-header {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 22px;
}

.nadc-kicker {
    margin: 0 0 8px;
    color: var(--nadc-primary);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.nadc-header h2 {
    margin: 0;
    color: var(--nadc-text);
    font-size: clamp(1.5rem, 5vw, 2.25rem);
    line-height: 1.15;
}

.nadc-intro {
    max-width: 720px;
    margin: 10px 0 0;
    color: var(--nadc-muted);
    font-size: clamp(0.95rem, 3vw, 1.05rem);
    line-height: 1.6;
}

.nadc-form {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    min-width: 0;
}

.nadc-field {
    min-width: 0;
}

.nadc-field label {
    display: block;
    margin-bottom: 8px;
    color: var(--nadc-text);
    font-size: 0.98rem;
    font-weight: 800;
}

.nadc-field input {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    min-height: 52px;
    border: 1px solid var(--nadc-line);
    border-radius: 14px;
    background: var(--nadc-panel);
    color: var(--nadc-text);
    font: inherit;
    font-size: 1rem;
    padding: 12px 14px;
}

.nadc-help,
.nadc-error {
    margin: 7px 0 0;
    font-size: 0.88rem;
    line-height: 1.45;
}

.nadc-help {
    color: var(--nadc-muted);
}

.nadc-error {
    min-height: 1.2em;
    color: var(--nadc-bad);
    font-weight: 700;
}

.nadc-optional {
    border: 1px solid var(--nadc-line);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.42);
    padding: 12px 14px;
}

.nadc-dark .nadc-optional {
    background: rgba(255, 255, 255, 0.03);
}

.nadc-optional summary {
    cursor: pointer;
    color: var(--nadc-text);
    font-weight: 800;
    min-height: 32px;
}

.nadc-optional-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 14px;
    min-width: 0;
}

.nadc-theme-toggle,
.nadc-button {
    appearance: none;
    border: 1px solid var(--nadc-line);
    border-radius: 14px;
    cursor: pointer;
    font: inherit;
    font-weight: 800;
    line-height: 1;
    min-height: 46px;
    padding: 13px 16px;
    transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease, background 160ms ease;
}

.nadc-theme-toggle,
.nadc-button {
    width: 100%;
    background: var(--nadc-panel);
    color: var(--nadc-text);
}

.nadc-button-primary {
    background: var(--nadc-primary);
    border-color: var(--nadc-primary);
    color: #ffffff;
}

.nadc-button-muted {
    background: transparent;
}

.nadc-theme-toggle:hover,
.nadc-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 22px rgba(15, 23, 42, 0.12);
}

.nadc-theme-toggle:focus-visible,
.nadc-button:focus-visible,
.nadc-field input:focus-visible,
.nadc-optional summary:focus-visible {
    outline: 3px solid rgba(31, 79, 143, 0.35);
    outline-offset: 3px;
}

.nadc-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 2px;
}

/* Flat full-width report output inspired by the user's reference screenshot. */
.nadc-result {
    width: 100%;
    max-width: 100%;
    margin-top: 28px;
    padding: 0;
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    min-width: 0;
}

.nadc-report-heading {
    border-top: 4px solid var(--nadc-text);
    padding-top: 14px;
    margin-top: 6px;
    margin-bottom: 12px;
}

.nadc-report-heading span {
    display: block;
    color: var(--nadc-text);
    font-size: clamp(1.35rem, 5vw, 1.9rem);
    font-weight: 900;
    line-height: 1.2;
}

.nadc-status {
    width: 100%;
    padding: 0 0 16px;
    margin: 0;
    border-bottom: 1px solid var(--nadc-line);
    color: var(--nadc-muted);
    font-weight: 800;
    font-size: clamp(1rem, 3.5vw, 1.15rem);
    line-height: 1.45;
}

.nadc-status.is-good {
    color: var(--nadc-good);
}

.nadc-status.is-warning {
    color: var(--nadc-warn);
}

.nadc-status.is-late {
    color: var(--nadc-bad);
}

.nadc-flat-report {
    width: 100%;
    max-width: 100%;
    min-width: 0;
}

.nadc-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
    padding: 18px 0;
    border-bottom: 1px solid var(--nadc-line);
    min-width: 0;
}

.nadc-row span {
    color: var(--nadc-muted);
    font-size: clamp(1.05rem, 4vw, 1.35rem);
    font-weight: 850;
    line-height: 1.25;
    min-width: 0;
}

.nadc-row strong {
    color: var(--nadc-text);
    font-size: clamp(1.18rem, 5vw, 1.65rem);
    font-weight: 950;
    line-height: 1.2;
    min-width: 0;
    overflow-wrap: anywhere;
}

.nadc-main-row strong {
    color: var(--nadc-good);
}

.nadc-summary {
    margin-top: 18px;
    color: var(--nadc-text);
    font-size: clamp(0.98rem, 3vw, 1.05rem);
    font-weight: 650;
    line-height: 1.6;
}

.nadc-disclaimer {
    margin: 14px 0 0;
    color: var(--nadc-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

@media (min-width: 600px) {
    .nadc-header {
        flex-direction: row;
        align-items: flex-start;
        justify-content: space-between;
    }

    .nadc-theme-toggle {
        width: auto;
        white-space: nowrap;
    }

    .nadc-button {
        width: auto;
    }

    .nadc-optional-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .nadc-row {
        grid-template-columns: minmax(0, 1fr) auto;
        align-items: end;
        gap: 18px;
    }

    .nadc-row strong {
        text-align: right;
        white-space: nowrap;
    }
}

@media print {
    .nadc-form,
    .nadc-theme-toggle,
    .nadc-actions {
        display: none !important;
    }

    .nadc-shell {
        box-shadow: none;
        border: 0;
        background: #ffffff;
        color: #000000;
        padding: 0;
    }

    .nadc-result {
        margin-top: 0;
    }
}