:root
{
    --bg: #0f1115;
    --panel: #171a21;
    --ink: #e9eef5;
    --muted: #a8b3c7;
    --accent: #7aa2ff;
    --accent-2: #a77dff;
    --ring: #2a3140;
    --ok: #5bdd8b;
    --warn: #ffd166;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

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

html,
body
{
    margin: 0;
    padding: 0;
    background: radial-gradient(1200px 800px at 20% -10%, #151926 0%, #0b0d12 60%, #0a0c10 100%),
        var(--bg);
    color: var(--ink);
    font: 16px/1.5 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, sans-serif;
}

.container
{
    width: min(920px, 92vw);
    margin: 24px auto;
}

h1
{
    margin: 0 0 4px 0;
    font-size: clamp(1.6rem, 1.1rem + 2vw, 2.2rem);
    letter-spacing: 0.2px;
}

.sub
{
    color: var(--muted);
    margin: 0;
}

.card
{
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0));
    border: 1px solid var(--ring);
    border-radius: 16px;
    padding: 20px;
    box-shadow: var(--shadow);
}

form fieldset
{
    border: 1px solid var(--ring);
    border-radius: 12px;
    padding: 16px;
    margin: 0 0 16px 0;
}

legend
{
    color: var(--muted);
    padding: 0 6px;
    font-size: 0.95rem;
}

label
{
    display: block;
    margin: 12px 0 6px 0;
}

input,
select,
button
{
    font: inherit;
}

input,
select
{
    width: 100%;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid var(--ring);
    background: #0f1218;
    color: var(--ink);
    outline: none;
}

input:focus,
select:focus
{
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(122, 162, 255, 0.2);
}

.row
{
    display: grid;
    grid-template-columns: 110px 1fr 140px;
    gap: 8px;
    align-items: center;
}

.pill
{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    padding: 10px 12px;
    border-radius: 999px;
    border: 1px solid var(--ring);
    background: #0f1218;
    color: var(--ink);
}

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

button
{
    padding: 10px 14px;
    border-radius: 10px;
    border: 1px solid var(--accent);
    background: linear-gradient(180deg, rgba(122, 162, 255, 0.18), rgba(122, 162, 255, 0.05));
    color: var(--ink);
    cursor: pointer;
}

button:hover
{
    filter: brightness(1.05);
}

button.ghost
{
    border-color: var(--ring);
    background: transparent;
}

.results
{
    margin-top: 18px;
}

.hidden
{
    display: none;
}

.grid
{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
    margin: 12px 0 8px;
}

.metric
{
    border: 1px solid var(--ring);
    border-radius: 12px;
    padding: 12px;
    background: #10141c;
}

.metric .label
{
    color: var(--muted);
    font-size: 0.9rem;
    margin-bottom: 6px;
}

.metric .value
{
    font-weight: 700;
    font-size: 1.2rem;
}

.explain
{
    color: var(--muted);
}

.footer
{
    color: var(--muted);
    margin-bottom: 40px;
}

/* Narrow screens */
@media (max-width: 560px)
{
    .row
    {
        grid-template-columns: 90px 1fr;
    }

    .row select:last-child
    {
        grid-column: span 2;
    }
}