.contribute-howto {
    margin: 12px 0 0;
    padding-left: 1.2em;
    line-height: 1.8;
}

.contribute-login {
    text-align: center;
    margin: 24px 0;
}

.google-login-slot {
    display: flex;
    justify-content: center;
    min-height: 44px;
    margin: 12px 0;
}

.year-toggles {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    margin: 12px 0;
}

.year-toggle {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    min-height: 32px;
    cursor: pointer;
    font-size: 0.95rem;
}

.value-grid-container {
    max-height: 70vh;
    overflow: auto;
}

table.value-grid {
    border-collapse: collapse;
    width: 100%;
    font-size: 0.9rem;
}

table.value-grid th {
    position: sticky;
    top: 0;
    background: var(--color-card);
    z-index: 1;
    white-space: nowrap;
}

table.value-grid th,
table.value-grid td {
    padding: 4px 6px;
    border-bottom: 1px solid var(--color-border);
    text-align: left;
}

table.value-grid .faculty-cell {
    font-weight: 600;
    white-space: nowrap;
}

table.value-grid input {
    width: 7.5em;
    height: 34px;
    padding: 4px 6px;
    font-size: 15px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-card);
    color: var(--color-text);
}

table.value-grid input::placeholder {
    color: var(--color-text-secondary);
    opacity: 0.6;
}

table.value-grid input.filled {
    border-color: var(--color-primary);
    background: rgba(0, 113, 227, 0.06);
}

.contribute-form textarea {
    width: 100%;
    padding: 8px 12px;
    font-size: 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: inherit;
}

.file-list {
    list-style: none;
    padding: 0;
    margin: 8px 0 0;
}

.file-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 6px 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    margin-bottom: 6px;
    font-size: 0.9rem;
}

@media (max-width: 600px) {
    table.value-grid .faculty-cell {
        display: none;
    }
    table.value-grid input {
        width: 6.2em;
    }
}

/* サイト全体の input のスタイルを、チェックボックスでは打ち消す */
.year-toggle input[type="checkbox"],
.overwrite-option input[type="checkbox"] {
    appearance: auto;
    width: 18px;
    height: 18px;
    min-width: 0;
    padding: 0;
    margin: 0;
    flex: none;
    accent-color: var(--color-primary);
}

.year-toggle {
    white-space: nowrap;
}