body { background-color: var(--canvas); color: var(--ink);
}

.main-content {
    padding: 20px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

h1 {
    font-family: 'Crimson Pro', serif;
    font-size: 2.5rem;
    font-weight: 700; color: var(--info-strong);
    margin-bottom: 1rem;
    text-align: center;
}

.subtitle {
    text-align: center; color: var(--ink-60);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

.calculator-card { background-color: var(--surface); border-radius: var(--r-sm);
    padding: 2.5rem; box-shadow: none;
    margin-bottom: 2rem;
}

.info-box { background-color: var(--canvas); border-left: 4px solid var(--keyline);
    padding: 1.5rem;
    margin-bottom: 2rem;
    border-radius: var(--r-sm);
}

.info-box p { color: var(--ink-70);
    margin-bottom: 0.5rem;
}

.info-box p:last-child {
    margin-bottom: 0;
}

.info-box strong { color: var(--info-strong);
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem; color: var(--ink);
    font-weight: 500;
    font-size: 0.95rem;
}

.label-hint {
    font-weight: 400; color: var(--ink-60);
    font-size: 0.85rem;
}

input, select {
    width: 100%;
    padding: 0.75rem; background-color: var(--canvas); border: 2px solid var(--rule); border-radius: var(--r-sm); color: var(--ink);
    font-size: 1rem;
    font-family: 'Work Sans', sans-serif;
    transition: border-color 0.3s ease;
    box-sizing: border-box;
}

input:focus, select:focus {
    outline: none; border-color: var(--keyline);
}

input::placeholder { color: var(--ink-60);
}

select {
    cursor: pointer;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 640px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.calculate-btn {
    width: 100%;
    padding: 1rem; background-color: var(--ink);
    color: white;
    border: none; border-radius: var(--r-sm);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
    font-family: 'Work Sans', sans-serif;
    margin-top: 1rem;
}

.calculate-btn:hover { background-color: var(--ink-strong);
}

.results {
    display: none;
    margin-top: 2rem;
    padding-top: 2rem; border-top: 2px solid var(--rule);
}

.results.show {
    display: block;
}

.result-section {
    margin-bottom: 2rem;
}

.result-section h3 {
    font-family: 'Crimson Pro', serif; color: var(--info-strong);
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem; background-color: var(--canvas); border-radius: var(--r-sm);
    margin-bottom: 0.75rem;
}

.result-label { color: var(--ink-60);
    font-size: 0.95rem;
}

.result-value {
    font-size: 1.3rem;
    font-weight: 600; color: var(--ink);
}

.result-row.highlight { background-color: var(--surface); border: 2px solid var(--rule);
}

.result-row.final { background-color: var(--surface); border: 2px solid var(--keyline);
    padding: 1.25rem;
    margin-top: 1rem;
}

.result-row.final .result-label { color: var(--ink);
    font-size: 1.1rem;
    font-weight: 600;
}

.result-row.final .result-value {
    font-size: 1.8rem; color: var(--info-strong);
}

.result-row.final.positive .result-value {
    color: var(--positive);
}

.result-row.final.negative .result-value {
    color: var(--negative);
}

.risk-indicator { background-color: var(--canvas);
    padding: 1rem; border-radius: var(--r-sm);
    border-left: 4px solid var(--caution-deep);
}

.risk-indicator p { color: var(--ink-70);
    margin-bottom: 0.5rem;
}

.risk-indicator p:last-child {
    margin-bottom: 0;
}

.risk-indicator strong { color: var(--caution-deep);
}

.paywall-card { background-color: var(--surface); border-radius: var(--r-sm);
    padding: 4rem 2rem; box-shadow: none;
    margin-bottom: 2rem;
    text-align: center; border: 2px solid var(--rule);
}

.paywall-card h2 {
    font-family: 'Crimson Pro', serif;
    font-size: 2rem; color: var(--info-strong);
    margin-bottom: 1rem;
}

.paywall-card p { color: var(--ink-60);
    margin-bottom: 2rem;
    font-size: 1.05rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.paywall-features {
    list-style: none;
    padding: 0;
    margin-bottom: 2rem;
    display: inline-block;
    text-align: left;
}

.paywall-features li { color: var(--ink-70);
    padding: 0.4rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.paywall-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--positive);
    font-weight: bold;
}

.paywall-btn {
    display: inline-block;
    padding: 0.875rem 2.5rem; background-color: var(--ink);
    color: white;
    border: none; border-radius: var(--r-sm);
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
    font-family: 'Work Sans', sans-serif;
    margin-bottom: 1rem;
}

.paywall-btn:hover { background-color: var(--ink-strong);
}

.paywall-signin-link {
    display: block; color: var(--ink-60);
    font-size: 0.9rem;
    margin-top: 0.75rem;
}

.paywall-signin-link button {
    background: none;
    border: none; color: var(--info-strong);
    cursor: pointer;
    font-size: 0.9rem;
    font-family: 'Work Sans', sans-serif;
    text-decoration: underline;
}

.auth-message { background-color: var(--surface);
    border: 2px solid var(--positive); border-radius: var(--r-sm);
    padding: 1rem 1.5rem;
    color: var(--positive);
    text-align: center;
    margin-bottom: 1rem;
    display: none;
}

.mode-tabs {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 2rem; border-bottom: 2px solid var(--rule);
}

.mode-tab {
    background: none;
    border: none;
    padding: 0.75rem 1.25rem; color: var(--ink-60);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: color 0.2s ease, border-color 0.2s ease;
    font-family: 'Work Sans', sans-serif;
}

.mode-tab:hover { color: var(--ink);
}

.mode-tab.active { color: var(--info-strong); border-bottom-color: var(--keyline);
}

.mode-panel {
    display: none;
}

.mode-panel.active {
    display: block;
}

.mode-panel h4 {
    font-family: 'Crimson Pro', serif; color: var(--info-strong);
    font-size: 1.15rem;
    margin: 1.75rem 0 1rem 0;
}

@media (max-width: 640px) {
    h1 {
        font-size: 2rem;
    }

    .calculator-card {
        padding: 1.5rem;
    }

    .result-value {
        font-size: 1.1rem;
    }

    .result-row.final .result-value {
        font-size: 1.5rem;
    }
}