/* Reset básico e fontes */
body, html {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f7f6;
    color: #333;
    line-height: 1.6;
}

/* Container principal para centralizar conteúdo e limitar largura */
header, main, footer {
    max-width: 960px;
    margin: 0 auto;
    padding: 20px;
}

/* Cabeçalho */
header {
    background-color: #2c3e50;
    color: #ecf0f1;
    padding: 20px 40px; /* Ajustado para mais espaço */
    text-align: center;
    border-bottom: 4px solid #3498db;
    display: flex; /* Para alinhar título e navegação */
    justify-content: space-between; /* Espaçar título e nav */
    align-items: center; /* Alinhar verticalmente */
}

header h1 {
    margin: 0;
    font-size: 2em;
}

/* Navegação no cabeçalho (opcional, usado em library.html) */
header nav .btn-nav {
    color: #ecf0f1;
    background-color: #3498db;
    padding: 8px 15px;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

header nav .btn-nav:hover {
    background-color: #2980b9;
}


/* Seção Hero (home.html) */
.hero {
    text-align: center;
    padding: 40px 20px;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.hero h2 {
    color: #2c3e50;
    margin-bottom: 15px;
}

/* Botões */
.btn, .player-controls button {
    display: inline-block;
    background-color: #3498db;
    color: #ffffff;
    padding: 12px 25px;
    text-decoration: none;
    border-radius: 25px; /* Bordas mais arredondadas */
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.2s ease;
    border: none;
    cursor: pointer;
    margin: 5px;
    font-size: 1em;
}

.btn:hover, .player-controls button:hover {
    background-color: #2980b9;
    transform: translateY(-2px); /* Efeito sutil ao passar o mouse */
}

/* Lista de Audiolivros (library.html) */
.audiobook-list-container {
    background-color: #ffffff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.audiobook-list-container h2 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 25px;
}

.audiobook-list {
    list-style: none;
    padding: 0;
}

.audiobook-list li {
    background-color: #e9ecef;
    padding: 15px 20px;
    margin-bottom: 10px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.audiobook-list li:hover {
    background-color: #dde2e6;
    box-shadow: 0 2px 5px rgba(0,0,0,0.15);
}

.audiobook-list li .play-icon {
    font-weight: bold;
    color: #3498db;
}

/* Player Container (audiobook.html) */
.player-container {
    background-color: #ffffff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    text-align: center;
}

#audiobookTitle { /* Título acima do player */
    text-align: center;
    color: #2c3e50;
    margin-bottom: 20px;
}

#audioPlayer {
    width: 100%;
    margin-bottom: 20px;
    border-radius: 5px; /* Bordas arredondadas para o player */
    outline: none; /* Remove borda de foco padrão */
}

/* Customização da aparência do player (varia entre navegadores) */
audio::-webkit-media-controls-panel {
  background-color: #ecf0f1; /* Fundo do painel de controle */
  border-radius: 5px;
}
audio::-webkit-media-controls-play-button,
audio::-webkit-media-controls-timeline,
audio::-webkit-media-controls-current-time-display,
audio::-webkit-media-controls-time-remaining-display,
audio::-webkit-media-controls-mute-button,
audio::-webkit-media-controls-volume-slider {
  filter: invert(15%) sepia(5%) saturate(2000%) hue-rotate(180deg) brightness(100%) contrast(70%);
}


.player-controls {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    gap: 15px; /* Espaço entre os botões */
}

/* Rodapé */
footer {
    text-align: center;
    margin-top: 30px;
    padding: 20px;
    background-color: #34495e;
    color: #bdc3c7;
    font-size: 0.9em;
}

/* Responsividade */
@media (max-width: 768px) {
    header {
        flex-direction: column; /* Título e nav em colunas */
        padding: 20px;
    }
    header h1 {
        font-size: 1.8em;
        margin-bottom: 10px; /* Espaço abaixo do título */
    }
    header nav {
        margin-top: 10px;
    }

    .btn, .player-controls button {
        padding: 10px 20px;
        font-size: 0.9em;
    }

    .player-controls {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5em;
    }
    .audiobook-list li {
        flex-direction: column;
        align-items: flex-start;
    }
    .audiobook-list li .play-icon {
        margin-top: 5px;
    }
}