/* =============================================================
   Reader Sidebar — barra lateral flutuante do leitor de capítulos
   Referência visual: toonlivre.net
   ============================================================= */

/* ---- Posicionamento base ---- */
.reader-sidebar {
    position: fixed;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 9000;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    user-select: none;
}

/* ---- Botão individual (círculo escuro) ---- */
.reader-sidebar__btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: rgba(22, 22, 30, 0.90);
    color: #c8c8d8;
    cursor: pointer;
    transition: background 0.18s, color 0.18s, transform 0.15s;
    text-decoration: none;
    flex-shrink: 0;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    box-shadow: 0 2px 8px rgba(0,0,0,0.45);
}

.reader-sidebar__btn:hover {
    background: rgba(38, 38, 52, 0.97);
    color: #ffffff;
    transform: scale(1.08);
}

.reader-sidebar__btn.is-disabled {
    opacity: 0.35;
    cursor: not-allowed;
    pointer-events: none;
}

/* Botão de próximo capítulo (base da sidebar) */
.reader-sidebar__btn--next {
    margin-top: 4px;
}

/* ---- Botão recolher/expandir ---- */
.reader-sidebar__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: rgba(22, 22, 30, 0.90);
    color: #c8c8d8;
    cursor: pointer;
    transition: background 0.18s, color 0.18s;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    box-shadow: 0 2px 8px rgba(0,0,0,0.45);
    flex-shrink: 0;
}

.reader-sidebar__toggle:hover {
    background: rgba(38, 38, 52, 0.97);
    color: #ffffff;
}

.reader-sidebar__toggle-icon {
    transition: transform 0.25s ease;
}

/* ---- Estado colapsado ---- */
.reader-sidebar.is-collapsed .reader-sidebar__body {
    display: none;
}

.reader-sidebar.is-collapsed .reader-sidebar__btn--next {
    display: none;
}

/* Gira o ícone quando expandido → aponta para direita (>) */
.reader-sidebar.is-collapsed .reader-sidebar__toggle-icon {
    transform: rotate(180deg);
}

/* ---- Corpo (lista de botões) ---- */
.reader-sidebar__body {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

/* ---- Wrapper de item com popup ---- */
.reader-sidebar__item {
    position: relative;
}

/* ---- Popup genérico ---- */
.reader-sidebar__popup {
    position: absolute;
    right: calc(100% + 12px);
    top: 50%;
    transform: translateY(-50%);
    width: 200px;
    background: #16161e;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 10px;
    box-shadow: 0 8px 28px rgba(0,0,0,0.55);
    overflow: hidden;
    z-index: 9100;
}

.reader-sidebar__popup--wide {
    width: 230px;
}

.reader-sidebar__popup-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    background: rgba(255,255,255,0.04);
    border-bottom: 1px solid rgba(255,255,255,0.07);
    font-size: 13px;
    font-weight: 600;
    color: #e0e0f0;
}

.reader-sidebar__popup-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border: none;
    background: transparent;
    color: #888;
    cursor: pointer;
    border-radius: 4px;
    transition: background 0.15s, color 0.15s;
    padding: 0;
}

.reader-sidebar__popup-close:hover {
    background: rgba(255,255,255,0.08);
    color: #fff;
}

/* ---- Lista de capítulos no popup ---- */
.reader-sidebar__popup-list {
    max-height: 320px;
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.12) transparent;
}

.reader-sidebar__popup-list::-webkit-scrollbar {
    width: 4px;
}

.reader-sidebar__popup-list::-webkit-scrollbar-track {
    background: transparent;
}

.reader-sidebar__popup-list::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.14);
    border-radius: 2px;
}

.reader-sidebar__chapter-link,
.reader-sidebar__popup-item {
    display: block;
    padding: 9px 14px;
    font-size: 13px;
    color: #b0b0c8;
    text-decoration: none;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    transition: background 0.12s, color 0.12s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.reader-sidebar__chapter-link:last-child,
.reader-sidebar__popup-item:last-child {
    border-bottom: none;
}

.reader-sidebar__chapter-link:hover,
.reader-sidebar__popup-item:hover {
    background: rgba(255,255,255,0.06);
    color: #ffffff;
}

.reader-sidebar__chapter-link.is-active,
.reader-sidebar__chapter-link.is-current,
.reader-sidebar__popup-item.is-active,
.reader-sidebar__popup-item.is-current {
    color: var(--color-primary, #0cff8a);
    font-weight: 600;
    background: rgba(12,255,138,0.06);
}

/* ---- Popup de configurações ---- */
.reader-sidebar__settings {
    padding: 12px 14px;
}

.reader-sidebar__settings-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #666680;
    margin: 0 0 8px;
}

.reader-sidebar__settings-label + .reader-sidebar__settings-label {
    margin-top: 14px;
}

.reader-sidebar__settings-row {
    display: flex;
    gap: 6px;
}

.reader-sidebar__mode-btn {
    flex: 1;
    padding: 7px 0;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 6px;
    background: transparent;
    color: #a0a0b8;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.reader-sidebar__mode-btn:hover {
    background: rgba(255,255,255,0.06);
    color: #fff;
}

.reader-sidebar__mode-btn.is-active {
    background: var(--color-primary, #0cff8a);
    border-color: var(--color-primary, #0cff8a);
    color: #0a0a12;
    font-weight: 700;
}

.reader-sidebar__settings-row--zoom {
    align-items: center;
    justify-content: space-between;
}

.reader-sidebar__zoom-step {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 6px;
    background: transparent;
    color: #c8c8d8;
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.reader-sidebar__zoom-step:hover {
    background: rgba(255,255,255,0.08);
    color: #fff;
}

.reader-sidebar__zoom-val {
    font-size: 13px;
    font-weight: 600;
    color: #e0e0f0;
    min-width: 42px;
    text-align: center;
}

/* ---- Responsivo: esconde em telas muito pequenas ---- */
@media (max-width: 480px) {
    .reader-sidebar {
        right: 8px;
    }

    .reader-sidebar__btn,
    .reader-sidebar__toggle {
        width: 38px;
        height: 38px;
    }

    .reader-sidebar__popup {
        width: 180px;
        right: calc(100% + 8px);
    }
}