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: 2rem;
    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.success { border-left-color: var(--positive); }
.info-box.warning { border-left-color: var(--caution-deep); }

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

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

.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 { color: var(--ink-60);
    font-weight: 400;
    font-size: 0.82rem;
    margin-left: 0.4rem;
}

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;
}

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

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

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

.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;
}

.results h3 { color: var(--ink);
    margin-top: 0;
    font-size: 1.1rem;
}

.score-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin: 1rem 0 1.5rem;
}
.score-none { color: var(--ink-45); }

.score-tag { background-color: var(--canvas);
    border: 2px solid var(--positive);
    color: var(--positive);
    padding: 0.4rem 0.9rem; border-radius: var(--r-sm);
    font-weight: 600;
    font-size: 0.95rem;
}

.score-tag.bucket {
    border-color: var(--positive);
    border-style: dashed;
}

.read-order { color: var(--ink-60);
    font-size: 0.85rem;
    margin-top: -1rem;
    margin-bottom: 1.5rem;
}

.mixed-note { color: var(--ink-60);
    font-size: 0.85rem;
    line-height: 1.6;
    margin-top: 1rem;
}

.error {
    background-color: var(--negative-05);
    border-left: 4px solid var(--negative);
    color: var(--negative-deep);
    padding: 1rem;
    border-radius: var(--r-sm);
    margin-bottom: 1rem;
    display: none;
}

.error.show {
    display: block;
}

.guide-section { color: var(--ink-70);
    line-height: 1.7;
}

.guide-section h2 { color: var(--ink);
    font-family: 'Crimson Pro', serif;
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.guide-section p {
    margin-bottom: 1rem;
}

.guide-section a { color: var(--info-strong);
}

@media (max-width: 640px) {
    h1 { font-size: 2rem; }
    .calculator-card { padding: 1.5rem; }
    .input-row { grid-template-columns: 1fr; }
}