:root {
    --bg: #0b1020;
    --bg-2: #121a2f;
    --panel: rgba(255,255,255,0.06);
    --panel-strong: rgba(255,255,255,0.09);
    --border: rgba(255,255,255,0.12);
    --text: #eef2ff;
    --muted: #b5bfd6;
    --accent: #ef4444;
    --accent-2: #f87171;
    --teal: #62f1d6;
    --blue: #8ec5ff;
    --gold: #facc15;
    --danger: #ff8b8b;
    --shadow: 0 20px 60px rgba(0,0,0,0.35);
    --radius: 20px;
    --max: 1180px;
    /* keep old variable names alive so you don't have to rewrite everything */
    --ink: var(--text);
    --line: var(--border);
    --brand: var(--accent);
    --brand-2: var(--accent-2);
    --accent-soft: rgba(239,68,68,0.12);
    --blackband: rgba(255,255,255,0.04);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    line-height: 1.65;
    min-height: 100vh;
}

html, body {
    margin: 0;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
    color: var(--text);
    background: radial-gradient(circle at top left, rgba(239,68,68,0.14), transparent 30%), radial-gradient(circle at right center, rgba(98,241,214,0.08), transparent 28%), linear-gradient(180deg, #0a0f1d 0%, #0f172a 45%, #0b1020 100%);
}



#selectedResultPanel strong {
    color: var(--text);
}

a {
    color: var(--teal);
    text-decoration: none;
}
    a:hover {
        text-decoration: underline;
    }

.page {
    width: min(var(--max), calc(100% - 32px));
    margin: 0 auto;
    padding: 24px 0 56px;
}

.hero {
    background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 28px;
    padding: 32px 24px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    position: relative;
    overflow: hidden;
}

    .hero::before {
        content: "";
        position: absolute;
        inset: 0;
        background: radial-gradient(circle at top right, rgba(239,68,68,0.16), transparent 25%), radial-gradient(circle at bottom left, rgba(98,241,214,0.08), transparent 25%);
        pointer-events: none;
    }

    .hero h1 {
        position: relative;
        margin: 0 0 8px;
        font-size: clamp(1.9rem, 4vw, 3.1rem);
        line-height: 1.1;
        letter-spacing: -0.03em;
    }

    .hero p {
        position: relative;
        margin: 0;
        max-width: 800px;
        color: var(--muted);
        font-size: 1.02rem;
        line-height: 1.6;
    }


.card {
    background: var(--panel);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    border: 1px solid var(--border);
    backdrop-filter: blur(6px);
}

.hero,
.card {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.band {
    background: rgba(255,255,255,0.04);
    color: var(--text);
    padding: 14px 18px;
    font-size: 1.2rem;
    font-weight: 700;
    border-bottom: 1px solid var(--border);
}

.section {
    padding: 18px;
}

.layout {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 20px;
}

.field-grid {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 14px 16px;
    align-items: center;
}

    .field-grid label {
        color: var(--muted);
        font-size: 1rem;
        line-height: 1.3;
    }

    .field-grid input[type="number"] {
        width: 100%;
        padding: 14px 16px;
        border-radius: 16px;
        border: 1px solid var(--border);
        outline: none;
        font-size: 1rem;
        font-weight: 700;
        color: var(--text);
        background: rgba(255,255,255,0.05);
    }

        .field-grid input[type="number"]::placeholder {
            color: #93a0bd;
        }

        .field-grid input[type="number"]:focus {
            border-color: rgba(98,241,214,0.35);
            box-shadow: 0 0 0 3px rgba(98,241,214,0.10);
        }

    .field-grid input[disabled] {
        background: rgba(255,255,255,0.025);
        color: #7f8aa3;
        cursor: not-allowed;
    }

.actions {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 12px;
    margin-top: 14px;
}

button {
    border: 0;
    border-radius: 12px;
    padding: 16px 18px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform .08s ease, opacity .15s ease, background .2s ease, border-color .2s ease;
}

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

    button:active {
        transform: translateY(1px);
    }

.btn-primary {
    background: linear-gradient(180deg, var(--accent-2), var(--accent));
    color: white;
    box-shadow: 0 10px 24px rgba(239,68,68,0.25);
}

.btn-secondary {
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border);
    color: var(--text);
}

input,
button {
    font: inherit;
}

.toggle-grid,
.formula-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.formula-grid {
    grid-template-columns: 1fr 1fr 1fr;
}

.choice {
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255,255,255,0.04);
    cursor: pointer;
    user-select: none;
}

    .choice:hover {
        background: rgba(255,255,255,0.06);
    }

    .choice input {
        margin: 0;
        width: 22px;
        height: 22px;
        accent-color: var(--accent);
        flex: 0 0 auto;
    }

    .choice span {
        font-size: 1rem;
        color: var(--text);
    }

.subtle {
    color: var(--muted);
    font-size: .95rem;
    line-height: 1.55;
}

.summary {
    display: grid;
    gap: 12px;
}

.summary-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    padding: 12px 14px;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border);
    border-radius: 12px;
}

    .summary-row strong {
        font-size: .96rem;
        color: var(--text);
    }

    .summary-row span {
        color: var(--muted);
        text-align: right;
        font-weight: 700;
    }

.message {
    margin-top: 12px;
    padding: 12px 14px;
    border-radius: 12px;
    font-size: .95rem;
    display: none;
}

    .message.error {
        display: block;
        background: rgba(255,139,139,0.10);
        color: #ffd1d1;
        border: 1px solid rgba(255,139,139,0.25);
    }

    .message.info {
        display: block;
        background: rgba(98,241,214,0.10);
        color: #ccfff5;
        border: 1px solid rgba(98,241,214,0.22);
    }

.table-wrap {
    overflow: auto;
    border-top: 1px solid var(--border);
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 850px;
    background: transparent;
}

thead th {
    position: sticky;
    top: 0;
    background: rgba(255,255,255,0.05);
    color: var(--teal);
    font-size: .9rem;
    text-align: center;
    padding: 12px 10px;
    border-bottom: 1px solid var(--border);
    z-index: 1;
}

tbody td {
    padding: 11px 10px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    text-align: center;
    font-size: .94rem;
    color: var(--text);
    white-space: nowrap;
}

tbody tr:hover {
    background: rgba(255,255,255,0.04);
    cursor: pointer;
}

tbody tr.selected {
    background: rgba(98,241,214,0.10);
}

tbody td:first-child {
    font-weight: 700;
    color: var(--blue);
}

.helper {
    margin-top: 16px;
    padding: 14px 16px;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--muted);
    font-size: .94rem;
    line-height: 1.6;
}
    .helper a {
        color: var(--teal);
        font-weight: 700;
    }

    .helper a:hover {
        text-decoration: underline;
    }

.footnote {
    margin-top: 18px;
    color: var(--muted);
    font-size: .9rem;
    line-height: 1.55;
}

.eyebrow {
    display: inline-block;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(239,68,68,0.12);
    border: 1px solid rgba(239,68,68,0.25);
    color: #ffd7d7;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    margin-bottom: 16px;
    position: relative;
}

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

    .field-grid {
        grid-template-columns: 1fr;
    }

    .actions {
        grid-template-columns: 1fr;
    }

    .toggle-grid, .formula-grid {
        grid-template-columns: 1fr;
    }
}