:root {
    --opacidade-fundo: 1;
    --tamanho-imagem: 1;
    --cor-fundo: #f5f5f5;
    --cor-texto: #333;
    --cor-destaque: #6b46c1;
    --cor-header: #fff;
    --cor-borda: #e1e1e1;
}

.modo-noturno {
    --cor-fundo: #121212;
    --cor-texto: #e0e0e0;
    --cor-header: #1e1e1e;
    --cor-borda: #333;
}

.leitor-manga-container {
    max-width: 100%;
    margin: 0;
    padding: 0;
    background-color: rgba(var(--cor-fundo), var(--opacidade-fundo));
    color: var(--cor-texto);
    min-height: 100vh;
    position: relative;
}

.leitor-header {
    position: sticky;
    top: 0;
    background-color: var(--cor-header);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 100;
    padding: 15px;
}

.leitor-header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.leitor-header h1 {
    margin: 0;
    font-size: 1.2rem;
    text-align: center;
    flex-grow: 1;
    padding: 0 15px;
}

.capitulo-numero {
    color: var(--cor-destaque);
    font-weight: bold;
}

.progress-container {
    width: 100%;
    height: 4px;
    background: var(--cor-borda);
    margin-top: 10px;
}

.progress-bar {
    height: 100%;
    background: var(--cor-destaque);
    width: 0;
    transition: width 0.3s ease;
}

.leitor-cascata {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.leitor-cascata.pagina-unica {
    display: block;
    padding: 0;
}

.pagina-container {
    background: var(--cor-header);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.pagina-container:hover {
    transform: translateY(-5px);
}

.pagina-manga {
    width: 100%;
    height: auto;
    display: block;
    transform: scale(var(--tamanho-imagem));
    transform-origin: top center;
}

.pagina-info {
    padding: 10px;
    text-align: center;
    font-size: 0.9rem;
    color: var(--cor-texto);
    opacity: 0.7;
    border-top: 1px solid var(--cor-borda);
}

.btn-voltar {
    color: var(--cor-texto);
    font-size: 1.2rem;
    padding: 8px;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.btn-voltar:hover {
    background: rgba(0, 0, 0, 0.05);
}

.leitor-options {
    position: relative;
}

#btn-ajustes {
    background: none;
    border: none;
    color: var(--cor-texto);
    font-size: 1.2rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: background 0.2s;
}

#btn-ajustes:hover {
    background: rgba(0, 0, 0, 0.05);
}

.ajustes-panel {
    position: absolute;
    right: 0;
    top: 50px;
    background: var(--cor-header);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    width: 280px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 101;
}

.ajustes-panel.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.ajustes-panel h3 {
    margin-top: 0;
    margin-bottom: 15px;
    color: var(--cor-destaque);
    font-size: 1.1rem;
}

.close-ajustes {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--cor-texto);
    cursor: pointer;
    padding: 5px;
    line-height: 1;
}

.ajuste-option {
    margin-bottom: 15px;
}

.ajuste-option:last-child {
    margin-bottom: 0;
}

.ajuste-option label {
    display: block;
    margin-bottom: 5px;
    font-size: 0.9rem;
}

.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked+.slider {
    background-color: var(--cor-destaque);
}

input:checked+.slider:before {
    transform: translateX(26px);
}


#opacidade-fundo,
#tamanho-imagem {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--cor-borda);
    outline: none;
    -webkit-appearance: none;
}

#opacidade-fundo::-webkit-slider-thumb,
#tamanho-imagem::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--cor-destaque);
    cursor: pointer;
}

#layout-mode {
    width: 100%;
    padding: 8px;
    border-radius: 6px;
    border: 1px solid var(--cor-borda);
    background: var(--cor-header);
    color: var(--cor-texto);
}

.voltar-topo {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--cor-destaque);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 99;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.voltar-topo.show {
    opacity: 1;
    visibility: visible;
}

.voltar-topo:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

.leitor-footer {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
}

.capitulo-navegacao {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
}

.btn-capitulo {
    padding: 10px 20px;
    background: var(--cor-destaque);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: opacity 0.2s;
}

.btn-capitulo:hover {
    opacity: 0.9;
}

.pagina-info-mobile {
    display: none;
    font-size: 0.9rem;
}

/* Responsivo */
@media (max-width: 768px) {
    .leitor-cascata {
        grid-template-columns: 1fr;
        padding: 10px;
        gap: 10px;
    }

    .leitor-header h1 {
        font-size: 1rem;
    }

    .pagina-info {
        display: none;
    }

    .pagina-info-mobile {
        display: block;
    }

    .btn-capitulo span {
        display: none;
    }

    .btn-capitulo {
        padding: 12px;
    }

    .voltar-topo {
        width: 40px;
        height: 40px;
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 480px) {
    .leitor-header-content {
        flex-wrap: wrap;
    }

    .leitor-header h1 {
        order: 1;
        width: 100%;
        margin-top: 10px;
        text-align: center;
    }

    .ajustes-panel {
        right: 20px;
    }
}