.reader-body .muted {
    color: var(--reader-muted-text, var(--color-text-secondary));
}

.reader-body .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font: inherit;
    cursor: pointer;
}

.reader-body .btn-secondary {
    border: 1px solid var(--reader-panel-border, var(--color-border));
    border-radius: 999px;
    background: var(--reader-control-bg, var(--color-surface));
    color: var(--reader-content-text, var(--color-text));
    transition: transform 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.reader-body .btn-secondary:hover {
    transform: translateY(-1px);
    border-color: var(--reader-accent, var(--color-primary));
}

.reader-body .reader-chapter-drawer .chapter-title {
    color: inherit;
    font-weight: 600;
}

.nickname-privacy-modal {
    position: fixed;
    inset: 0;
    z-index: 250;
    display: grid;
    place-items: center;
    padding: 24px;
}

.nickname-privacy-modal__backdrop {
    position: absolute;
    inset: 0;
    background: color-mix(in srgb, var(--color-text) 58%, transparent);
    backdrop-filter: blur(8px);
}

.nickname-privacy-modal__dialog {
    position: relative;
    z-index: 1;
    width: min(620px, 100%);
    max-height: min(90vh, 760px);
    overflow-y: auto;
    border: 1px solid var(--color-border);
    border-radius: 20px;
    background: var(--color-surface);
    box-shadow: 0 24px 80px color-mix(in srgb, var(--color-text) 16%, transparent);
    padding: 22px;
}

.nickname-privacy-modal__header h2 {
    margin: 0;
    color: var(--color-text);
    font-size: 1.4rem;
}

.nickname-privacy-modal__header p {
    margin: 0.6rem 0 0;
    color: var(--color-muted);
    line-height: 1.65;
    white-space: pre-line;
}

.nickname-privacy-modal__body {
    display: grid;
    gap: 1rem;
    margin-top: 1rem;
}

.nickname-privacy-modal__current-name,
.nickname-privacy-modal__preview {
    display: grid;
    gap: 0.2rem;
    padding: 0.9rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: var(--color-surface-soft);
}

.nickname-privacy-modal__label {
    color: var(--color-muted);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.nickname-privacy-modal__field {
    display: block;
    color: var(--color-text);
    font-weight: 800;
}

.nickname-privacy-modal__form {
    display: grid;
    gap: 0.75rem;
}

.nickname-privacy-modal__form input {
    width: 100%;
    min-height: 46px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 0.8rem 0.95rem;
    background: var(--color-surface);
    color: var(--color-text);
    font: inherit;
}

.nickname-privacy-modal__hint {
    margin: 0;
    color: var(--color-muted);
    font-size: 0.92rem;
}

.nickname-privacy-modal__error {
    min-height: 1.2rem;
    margin: 0;
    color: var(--color-warning);
    font-weight: 700;
}

.nickname-privacy-modal__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.nickname-privacy-modal__submit,
.nickname-privacy-modal__skip {
    min-height: 46px;
    border: 0;
    border-radius: 999px;
    padding: 0.8rem 1rem;
    font: inherit;
    font-weight: 800;
    cursor: pointer;
}

.nickname-privacy-modal__submit {
    background: var(--color-primary);
    color: var(--color-on-primary);
}

.nickname-privacy-modal__skip {
    border: 1px solid var(--color-border);
    background: var(--color-surface-soft);
    color: var(--color-text);
}

@media (max-width: 640px) {
    .nickname-privacy-modal {
        padding: 12px;
    }

    .nickname-privacy-modal__dialog {
        padding: 16px;
    }

    .nickname-privacy-modal__actions {
        flex-direction: column;
    }

    .nickname-privacy-modal__submit,
    .nickname-privacy-modal__skip {
        width: 100%;
    }
}