:root {
    --app-height: 100vh;
    --safe-area-inset-bottom-env: 0px;
    --safe-area-bottom-extra: 0px;
    --safe-area-bottom: calc(var(--safe-area-inset-bottom-env) + var(--safe-area-bottom-extra));
}
@supports (padding-bottom: env(safe-area-inset-bottom)) {
    :root {
        --safe-area-inset-bottom-env: env(safe-area-inset-bottom);
    }
}
@supports (padding-bottom: constant(safe-area-inset-bottom)) {
    :root {
        --safe-area-inset-bottom-env: constant(safe-area-inset-bottom);
    }
}

/* --- 1. RESET BASICO E CONFIGURACOES GLOBAIS --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    overflow: hidden; /* Impede a barra de rolagem na pagina inteira */
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f0f2f5;
    color: #333;
    line-height: 1.6;
}

/* --- 2. LAYOUT PRINCIPAL --- */
#app-container {
    display: grid;
    grid-template-columns: 300px 1fr;
    height: var(--app-height, 100vh); /* Ajusta a altura disponivel da viewport */
    min-width: 0;  /* Evita overflow horizontal por conteudo interno */
}

/* --- 3. MENU DE NAVEGACAO (COM CONTROLE DE SCROLL INTERNO) --- */
#menu-navegacao {
    background-color: #ffffff;
    border-right: 1px solid #ddd;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0; /* Nao permita que o menu force overflow horizontal */
}

#menu-navegacao h2 {
    padding: 20px;
    margin-bottom: 0;
    font-size: 1.4em;
    color: #0056b3;
    border-bottom: 2px solid #0056b3;
    flex-shrink: 0;
}

#menu-items {
    flex-grow: 1;
    overflow-y: auto; /* Agora isso vai funcionar, pois o pai tem um limite */
    padding: 20px;
    min-width: 0;
}

#menu-items ul {
    list-style-type: none;
    padding-left: 0;
}

#menu-items li {
    margin-bottom: 5px;
}

.menu-item {
    display: block;
    padding: 8px 8px 8px 20px;
    text-decoration: none;
    color: #333;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
}

.menu-item:hover {
    background-color: #e9ecef;
}

.menu-item.active {
    background-color: #007bff;
    color: white;
    font-weight: bold;
}
.menu-item.menu-trail {
    color: #c81e1e;
}

.menu-group-title {
    font-weight: bold;
    cursor: pointer;
    padding: 8px;
    position: relative;
    border-radius: 4px;
}
.menu-group-title:hover {
    background-color: #f8f9fa;
}
.menu-group-title.menu-trail {
    color: #c81e1e;
}
.menu-group-title::before {
    content: "\25B6";
    font-size: 0.8em;
    margin-right: 8px;
    display: inline-block;
    transition: transform 0.2s;
}
.menu-group-title.expanded::before {
    transform: rotate(90deg);
}

/* --- 4. AREA DE CONTEUDO PRINCIPAL (COM CONTROLE DE SCROLL INTERNO) --- */
#conteudo-principal {
  display: flex;
  flex-direction: column;
  height: var(--app-height, 100vh); /* usa altura dinamica para evitar sobreposicao */
  overflow: hidden;           /* impede overflow horizontal/vertical aqui */
  min-width: 0;               /* evita overflow horizontal por filhos com min-width implicito */
}

#slide-header {
    margin-bottom: 25px;
    padding: 25px 40px 15px 40px;
    padding-right: 160px; /* espaco para botao de ferramentas em desktop */
    border-bottom: 1px solid #ddd;
    flex-shrink: 0;
    background-color: #fff;
    position: relative;
}

#slide-title {
    font-size: clamp(2rem, 1.6vw + 1.4rem, 3.2rem);
    color: #1a1a1a;
}
#slide-subtitle {
    font-size: clamp(1.15rem, 1vw + 0.85rem, 1.9rem);
    color: #666;
    font-style: italic;
    font-weight: normal;
}

@media (min-width: 1200px) {
    #slide-title { font-size: 3.2rem; }
    #slide-subtitle { font-size: 1.9rem; }
}

@media (min-width: 1600px) {
    #slide-title { font-size: 3.5rem; }
    #slide-subtitle { font-size: 2.1rem; }
}
#slide-subtitle:empty { display: none; } /* Some o subtitulo quando estiver vazio */

#slide-elements-container {
  flex: 1 1 auto;
  min-height: 0;              /* ESSENCIAL para o flex item poder encolher */
  overflow-y: auto;           /* rolagem vertical */
  overflow-x: hidden;         /* sem rolagem horizontal */
  position: relative;         /* referencia para o InfoBox */
  padding: 25px 40px;
  min-width: 0;               /* evita overflow horizontal por filhos */
  --sec-h: 60vh;              /* fallback; JS atualiza em runtime com a altura real */
}

/* Blindagem anti-overflow horizontal para textos/listas */
#slide-elements-container,
#slide-elements-container .text-element,
#slide-elements-container .list-element {
  word-wrap: break-word;
  overflow-wrap: anywhere; /* quebra inclusive palavras longas/URLs */
  min-width: 0;
}

#slide-footer {
    padding: 20px 40px;
    padding-bottom: calc(20px + var(--safe-area-bottom));
    border-top: 1px solid #ddd;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    background-color: #ffffff;
    flex-shrink: 0;
}

/* --- ESTILOS PARA COMPONENTES RESPONSIVOS (HAMBURGUER E OVERLAY) --- */
#hamburger-btn {
    display: none; /* Escondido em telas grandes */
    position: fixed;
    top: 15px;
    right: 15px; /* Mudanca de left para right */
    width: 40px;
    height: 35px;
    background-color: #007bff;
    border: none;
    border-radius: 5px;
    z-index: 1002; /* Acima do conteudo, mas abaixo do menu aberto */
    cursor: pointer;
    flex-direction: column;
    justify-content: space-around;
    padding: 8px;
}

#hamburger-btn span {
    display: block;
    height: 3px;
    width: 100%;
    background: white;
    border-radius: 3px;
    transition: all 0.3s ease-in-out;
}

/* Animacao para o X de fechar */
#hamburger-btn.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}
#hamburger-btn.active span:nth-child(2) {
    opacity: 0;
}
#hamburger-btn.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

#menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999; /* Fica entre o menu e o conteudo principal */
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

#menu-overlay:not(.hidden) {
    opacity: 1;
}

.hidden {
    display: none;
}

.modal-hidden {
    display: none !important;
}

#audio-player-container { flex-grow: 1; min-width: 0; }
#audio-player { width: 100%; }

#controles-navegacao button {
    padding: 10px 20px;
    border: none;
    background-color: #007bff;
    color: white;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.2s;
}
#controles-navegacao button:hover { background-color: #0056b3; }
#controles-navegacao button:disabled { background-color: #ccc; cursor: not-allowed; }

/* Botao Ferramentas */
#tools-button {
    position: absolute;
    top: 22px;
    right: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 10px;
    border: none;
    border-radius: 8px;
    background-color: #0d6efd;
    color: #fff;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
    z-index: 10;
}

#tools-button svg {
    width: 22px;
    height: 22px;
    fill: currentColor;
}

#tools-button:hover { background-color: #0b5ed7; box-shadow: 0 6px 18px rgba(13,110,253,0.2); }
#tools-button:active { background-color: #0a53be; }

/* Modal de ferramentas */
#tools-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0,0,0,0.45);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 24px;
    z-index: 1100;
}

#tools-box {
    background-color: #fff;
    width: min(520px, 100%);
    border-radius: 10px;
    box-shadow: 0 12px 30px rgba(0,0,0,0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#tools-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 18px;
    border-bottom: 1px solid #e5e7eb;
    gap: 12px;
}

#tools-title {
    margin: 0;
    font-size: 1.2rem;
}

#tools-subtitle {
    margin: 2px 0 0;
    color: #6c757d;
    font-size: 0.95rem;
}

#tools-close-btn {
    border: none;
    background: none;
    font-size: 1.6rem;
    line-height: 1;
    cursor: pointer;
    padding: 6px 8px;
    color: #444;
    border-radius: 6px;
}
#tools-close-btn:hover { background-color: #f1f3f5; }

#tools-body {
    padding: 14px 18px 18px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.tool-section h4 {
    margin: 0 0 8px 0;
    font-size: 1rem;
    color: #1a1a1a;
}

#search-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

#search-input {
    flex: 1 1 180px;
    min-width: 0;
    padding: 10px 12px;
    border: 1px solid #d0d7de;
    border-radius: 6px;
    font-size: 1rem;
}

#search-exact-wrapper {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: #444;
    font-size: 0.95rem;
    white-space: nowrap;
    user-select: none;
}

#search-button {
    padding: 10px 16px;
    border: none;
    border-radius: 6px;
    background-color: #0d6efd;
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

#search-button:hover { background-color: #0b5ed7; }
#search-button:active { background-color: #0a53be; }

/* Placeholder de outras ferramentas */
.tool-placeholder {
    border: 1px dashed #d0d7de;
    border-radius: 8px;
    padding: 10px 12px;
    color: #6c757d;
}

/* Modal de resultados de busca */
#search-results-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.45);
    display: grid;
    place-items: center;
    padding: 12px;
    box-sizing: border-box;
    z-index: 1100;
}

#search-results-box {
    background-color: #fff;
    box-sizing: border-box;
    width: min(900px, calc(100vw - 24px));
    max-height: 90vh;
    border-radius: 10px;
    box-shadow: 0 12px 30px rgba(0,0,0,0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#search-results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 18px;
    border-bottom: 1px solid #e5e7eb;
    gap: 12px;
}

#search-results-title {
    margin: 0;
    font-size: 1.2rem;
}

#search-results-count {
    margin: 2px 0 0;
    color: #6c757d;
    font-size: 0.95rem;
}

#search-results-close-btn {
    border: none;
    background: none;
    font-size: 1.6rem;
    line-height: 1;
    cursor: pointer;
    padding: 6px 8px;
    color: #444;
    border-radius: 6px;
}
#search-results-close-btn:hover {
    background-color: #f1f3f5;
}

#search-results-list {
    padding: 14px 18px 18px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.search-result-item {
    display: block;
    text-align: left;
    width: 100%;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 10px 12px;
    background-color: #fdfdfd;
    cursor: pointer;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.search-result-item:hover {
    border-color: #0d6efd;
    box-shadow: 0 4px 12px rgba(13,110,253,0.12);
    background-color: #f8fbff;
}

.search-result-title {
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 4px;
}

.search-result-path {
    color: #6c757d;
    font-size: 0.9rem;
    margin-bottom: 6px;
}

.search-result-snippet {
    color: #333;
    font-size: 0.95rem;
}

/* --- AUTENTICACAO (BARRA E MENU) --- */
.auth-bar {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    padding: 8px 16px;
    border-radius: 999px;
    background-color: rgba(15, 23, 42, 0.9);
    color: #f8fafc;
    margin-bottom: 12px;
}

.auth-bar span {
    font-weight: 500;
}

.auth-bar a {
    color: #38bdf8;
    text-decoration: none;
    font-weight: 600;
}

.auth-bar a:hover {
    text-decoration: underline;
}

.auth-menu {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    padding: 16px 20px;
    border-bottom: 1px solid #ddd;
    background-color: #f8fafc;
    color: #0f172a;
    flex-shrink: 0;
}

.auth-menu__info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    line-height: 1.25;
}

.auth-menu__label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #64748b;
}

.auth-menu__user {
    font-size: 1rem;
    font-weight: 600;
    color: #0f172a;
}

.auth-menu__action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid #38bdf8;
    background-color: #e0f2fe;
    color: #0f172a;
    font-weight: 600;
    text-decoration: none;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
    max-width: 100%;
    box-sizing: border-box;
}

.auth-menu__action:hover {
    background-color: #bae6fd;
    border-color: #0ea5e9;
    color: #0f172a;
}