/**
 * Google Drive Hierarchy Navigator - Estilos CSS
 * Versão: 2.5.0
 */

/* === VARIÁVEIS CSS === */
:root {
    --gdhn-primary: #4285f4;
    --gdhn-primary-hover: #3367d6;
    --gdhn-secondary: #34a853;
    --gdhn-danger: #ea4335;
    --gdhn-warning: #fbbc04;
    --gdhn-gray-50: #f8f9fa;
    --gdhn-gray-100: #f1f3f4;
    --gdhn-gray-200: #e8eaed;
    --gdhn-gray-300: #dadce0;
    --gdhn-gray-400: #bdc1c6;
    --gdhn-gray-500: #9aa0a6;
    --gdhn-gray-600: #80868b;
    --gdhn-gray-700: #5f6368;
    --gdhn-gray-800: #3c4043;
    --gdhn-gray-900: #202124;
    --gdhn-border-radius: 8px;
    --gdhn-shadow-light: 0 1px 3px rgba(0,0,0,0.1);
    --gdhn-shadow-medium: 0 4px 6px rgba(0,0,0,0.1);
    --gdhn-transition: all 0.2s ease;
}

/* === CONTAINER PRINCIPAL === */
.gdhn-container {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--gdhn-gray-800);
    background: #fff;
    border: 1px solid var(--gdhn-gray-200);
    border-radius: var(--gdhn-border-radius);
    padding: 20px;
    margin: 20px 0;
    box-shadow: var(--gdhn-shadow-light);
}

/* === LOADING === */
.gdhn-loading {
    text-align: center;
    padding: 40px 20px;
    color: var(--gdhn-gray-600);
}

.gdhn-spinner {
    display: inline-block;
    width: 32px;
    height: 32px;
    border: 3px solid var(--gdhn-gray-200);
    border-radius: 50%;
    border-top-color: var(--gdhn-primary);
    animation: gdhn-spin 1s ease-in-out infinite;
    margin-bottom: 12px;
}

@keyframes gdhn-spin {
    to { transform: rotate(360deg); }
}

/* === BARRAS DE NAVEGAÇÃO === */
.gdhn-navigation-bars {
    margin-bottom: 20px;
}

.gdhn-nav-level {
    margin-bottom: 16px;
    padding: 12px;
    border-radius: var(--gdhn-border-radius);
    transition: var(--gdhn-transition);
}

/* Estilo específico para o primeiro nível */
.gdhn-nav-level[data-level="0"] {
    background: linear-gradient(135deg, rgba(66, 133, 244, 0.1) 0%, rgba(51, 103, 214, 0.15) 100%);
    border: 2px solid rgba(66, 133, 244, 0.2);
    box-shadow: 0 2px 8px rgba(66, 133, 244, 0.1);
}

.gdhn-nav-level[data-level="0"] .gdhn-nav-chips {
    justify-content: center;
}

/* Estilo específico para o segundo nível */
.gdhn-nav-level[data-level="1"] {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: 2px solid #dee2e6;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.gdhn-nav-level:last-child {
    margin-bottom: 0;
}

.gdhn-nav-level-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--gdhn-gray-700);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.gdhn-nav-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.gdhn-nav-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--gdhn-gray-50);
    border: 1px solid var(--gdhn-gray-300);
    border-radius: 20px;
    color: var(--gdhn-gray-700);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: var(--gdhn-transition);
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
}

/* Chips do primeiro nível (Anos Letivos) */
.gdhn-nav-level[data-level="0"] .gdhn-nav-chip {
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--gdhn-gray-800);
    font-weight: 600;
    padding: 12px 20px;
    font-size: 14px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.gdhn-nav-level[data-level="0"] .gdhn-nav-chip:hover {
    background: #ffffff;
    border-color: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.gdhn-nav-level[data-level="0"] .gdhn-nav-chip.active {
    background: #ffffff;
    border-color: #ffffff;
    color: var(--gdhn-gray-800);
    transform: translateY(-1px);
    box-shadow: 0 3px 6px rgba(0,0,0,0.12);
}

/* Chips do segundo nível (Categorias) */
.gdhn-nav-level[data-level="1"] .gdhn-nav-chip {
    background: #ffffff;
    border: 2px solid #e8eaed;
    color: var(--gdhn-gray-800);
    font-weight: 500;
}

.gdhn-nav-chip:hover {
    background: var(--gdhn-primary);
    color: white;
    border-color: var(--gdhn-primary);
    transform: translateY(-1px);
    box-shadow: var(--gdhn-shadow-medium);
}

.gdhn-nav-chip.active {
    background: var(--gdhn-primary);
    color: white;
    border-color: var(--gdhn-primary);
    box-shadow: var(--gdhn-shadow-medium);
}

/* Estados específicos para segundo nível */
.gdhn-nav-level[data-level="1"] .gdhn-nav-chip:hover {
    background: var(--gdhn-primary);
    color: white;
    border-color: var(--gdhn-primary);
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(66, 133, 244, 0.3);
}

.gdhn-nav-level[data-level="1"] .gdhn-nav-chip.active {
    background: var(--gdhn-primary);
    color: white;
    border-color: var(--gdhn-primary);
    box-shadow: 0 2px 6px rgba(66, 133, 244, 0.3);
}

.gdhn-nav-chip .gdhn-chip-icon {
    margin-right: 6px;
    font-size: 14px;
}

/* === FILTRO === */
.gdhn-filter-section {
    margin-bottom: 20px;
}

.gdhn-filter-container {
    position: relative;
    max-width: 600px;
    display: flex;
    gap: 12px;
    align-items: center;
}

.gdhn-filter-input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid var(--gdhn-gray-300);
    border-radius: var(--gdhn-border-radius);
    font-size: 14px;
    background: var(--gdhn-gray-50);
    transition: var(--gdhn-transition);
    box-sizing: border-box;
}

.gdhn-filter-input:focus {
    outline: none;
    border-color: var(--gdhn-primary);
    background: white;
    box-shadow: 0 0 0 3px rgba(66, 133, 244, 0.1);
}

/* === BOTÃO ADMIN GOOGLE DRIVE === */
.gdhn-admin-drive-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    border: 1px solid var(--gdhn-gray-700);
    border-radius: var(--gdhn-border-radius);
    background: white;
    color: var(--gdhn-gray-700);
    border-color: var(--gdhn-gray-300);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--gdhn-transition);
    white-space: nowrap;
    box-shadow: 0 2px 4px rgba(66, 133, 244, 0.2);
}

.gdhn-admin-drive-btn:hover {
    background: var(--gdhn-primary);
    color: white;
    border-color: var(--gdhn-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(66, 133, 244, 0.3);
}

.gdhn-admin-drive-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(66, 133, 244, 0.2);
}

.gdhn-admin-drive-btn i {
    font-size: 16px;
}

.gdhn-admin-drive-btn span {
    font-weight: 500;
}

/* Fallback para ícone do botão admin */
.gdhn-admin-drive-btn i.fas.fa-folder-open:not(.fa)::before {
    content: "📂";
    font-family: inherit;
    font-style: normal;
}

/* Ícone de filtro removido */

/* === TABELA DE ARQUIVOS === */
.gdhn-files-section {
    margin-top: 20px;
}

.gdhn-files-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: var(--gdhn-border-radius);
    overflow: hidden;
    box-shadow: var(--gdhn-shadow-light);
}

.gdhn-files-table thead {
    background: var(--gdhn-gray-50);
}

.gdhn-files-table th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--gdhn-gray-700);
    border-bottom: 1px solid var(--gdhn-gray-200);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.gdhn-files-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--gdhn-gray-100);
    vertical-align: middle;
}

.gdhn-files-table tbody tr {
    transition: var(--gdhn-transition);
}

.gdhn-files-table tbody tr:hover {
    background: var(--gdhn-gray-50);
}

.gdhn-files-table tbody tr:last-child td {
    border-bottom: none;
}

/* Colunas específicas */
.gdhn-icon-col {
    width: 40px;
    text-align: center;
}

.gdhn-name-col {
    min-width: 200px;
}

.gdhn-date-col {
    width: 140px;
    color: var(--gdhn-gray-600);
    font-size: 13px;
    text-align: center;
    font-weight: 500;
}

.gdhn-size-col {
    width: 100px;
    color: var(--gdhn-gray-600);
    font-size: 13px;
    text-align: right;
    font-weight: 500;
}

.gdhn-hits-col {
    width: 80px;
    color: var(--gdhn-gray-600);
    font-size: 13px;
    text-align: center;
    font-weight: 500;
}

.gdhn-hits-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: 1px solid var(--gdhn-gray-300);
    border-radius: 50%;
    background: white;
    color: var(--gdhn-gray-600);
    font-size: 12px;
    font-weight: 600;
    line-height: 1;
    min-width: 32px;
}

.gdhn-hits-count:empty::after {
    content: '0';
}

.gdhn-actions-col {
    width: 120px;
    text-align: right;
}

/* Links dos nomes dos ficheiros */
.gdhn-file-name {
    color: var(--gdhn-gray-800) !important;
    text-decoration: none;
    font-weight: 500;
    transition: var(--gdhn-transition);
}

.gdhn-file-name:hover {
    color: var(--gdhn-primary) !important;
    text-decoration: none;
}

/* === ÍCONES DE ARQUIVOS === */
.gdhn-file-icon {
    font-size: 18px;
    display: inline-block;
}

.gdhn-file-name {
    font-weight: 500;
    color: var(--gdhn-gray-800);
    text-decoration: none;
    transition: var(--gdhn-transition);
}

.gdhn-file-name:hover {
    color: var(--gdhn-primary);
}

/* === BOTÕES DE AÇÃO === */
.gdhn-action-buttons {
    display: flex;
    gap: 6px;
    justify-content: flex-end;
}

.gdhn-btn {
    display: inline-flex;
    align-items: center;
    padding: 6px 12px;
    border: 1px solid var(--gdhn-gray-300);
    border-radius: var(--gdhn-border-radius);
    background: white;
    color: var(--gdhn-gray-700);
    text-decoration: none;
    font-size: 12px;
    font-weight: 500;
    transition: var(--gdhn-transition);
    cursor: pointer;
    white-space: nowrap;
}

.gdhn-btn:hover {
    border-color: var(--gdhn-primary);
    color: var(--gdhn-primary);
    transform: translateY(-1px);
    box-shadow: var(--gdhn-shadow-light);
}

.gdhn-btn-primary {
    background: var(--gdhn-primary);
    color: white;
    border-color: var(--gdhn-primary);
}

.gdhn-btn-primary:hover {
    background: var(--gdhn-primary-hover);
    border-color: var(--gdhn-primary-hover);
    color: white;
}

.gdhn-btn-success {
    background: var(--gdhn-secondary);
    color: white;
    border-color: var(--gdhn-secondary);
}

/* === BOTÕES APENAS COM ÍCONES === */
.gdhn-btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: 1px solid var(--gdhn-gray-300);
    border-radius: 50%;
    background: white;
    color: var(--gdhn-gray-600);
    text-decoration: none;
    font-size: 14px;
    transition: var(--gdhn-transition);
    cursor: pointer;
    margin: 0 2px;
    position: relative;
}

.gdhn-btn-icon i {
    font-size: 14px;
    line-height: 1;
    display: inline-block;
}

/* Fallbacks para ícones se Font Awesome falhar */
.gdhn-btn-view i.fas.fa-eye:not(.fa)::before {
    content: "👁";
    font-family: inherit;
}

.gdhn-btn-download i.fas.fa-download:not(.fa)::before {
    content: "⬇";
    font-family: inherit;
}

.gdhn-btn-icon:hover {
    background: var(--gdhn-primary);
    color: white;
    border-color: var(--gdhn-primary);
    transform: scale(1.1);
    box-shadow: 0 2px 8px rgba(66, 133, 244, 0.3);
}

.gdhn-btn-view {
    border: 1px solid var(--gdhn-gray-300);
    border-radius: var(--gdhn-border-radius);
    background: white;
    color: var(--gdhn-gray-700);
    text-decoration: none;
}

.gdhn-btn-view:hover {
    background: var(--gdhn-primary);
    border-color: var(--gdhn-primary);
    color: white;
}

.gdhn-btn-download {
    border: 1px solid var(--gdhn-gray-300);
    border-radius: var(--gdhn-border-radius);
    background: white;
    color: var(--gdhn-gray-700);
    text-decoration: none;
}

.gdhn-btn-download:hover {
    background: var(--gdhn-primary);
    border-color: var(--gdhn-primary);
    color: white;
}

.gdhn-btn-success:hover {
    background: #2d8f47;
    border-color: #2d8f47;
    color: white;
}

.gdhn-btn .gdhn-btn-icon {
    margin-right: 4px;
    font-size: 14px;
}

/* === MENSAGENS === */
.gdhn-no-files {
    text-align: center;
    padding: 40px 20px;
    color: var(--gdhn-gray-600);
    background: var(--gdhn-gray-50);
    border-radius: var(--gdhn-border-radius);
    border: 1px dashed var(--gdhn-gray-200);
}

.gdhn-no-files p {
    font-size: 16px;
    margin: 0;
    font-weight: 500;
}

.gdhn-no-files i {
    font-size: 18px;
}

.gdhn-error {
    background: #fef7f7;
    color: var(--gdhn-danger);
    padding: 12px 16px;
    border: 1px solid #fecaca;
    border-radius: var(--gdhn-border-radius);
    margin: 10px 0;
    font-weight: 500;
}

.gdhn-error-section {
    margin-top: 20px;
}

.gdhn-error-message {
    background: #fef7f7;
    color: var(--gdhn-danger);
    padding: 16px;
    border: 1px solid #fecaca;
    border-radius: var(--gdhn-border-radius);
    font-weight: 500;
}

/* === RESPONSIVIDADE === */
@media (max-width: 768px) {
    .gdhn-container {
        padding: 16px;
        margin: 16px 0;
    }
    
    .gdhn-nav-chips {
        gap: 6px;
    }
    
    .gdhn-nav-chip {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .gdhn-filter-container {
        max-width: 100%;
    }
    
    .gdhn-files-table {
        font-size: 13px;
    }
    
    .gdhn-files-table th,
    .gdhn-files-table td {
        padding: 8px 12px;
    }
    
    .gdhn-date-col,
    .gdhn-size-col,
    .gdhn-hits-col {
        display: none;
    }
    
    .gdhn-action-buttons {
        flex-direction: column;
        gap: 4px;
    }
    
    .gdhn-btn {
        padding: 4px 8px;
        font-size: 11px;
    }
}

@media (max-width: 480px) {
    .gdhn-container {
        padding: 12px;
    }
    
    .gdhn-nav-chip {
        padding: 4px 8px;
        font-size: 11px;
    }
    
    .gdhn-files-table th,
    .gdhn-files-table td {
        padding: 6px 8px;
    }
    
    .gdhn-icon-col {
        width: 30px;
    }
    
    .gdhn-actions-col {
        width: 80px;
    }
    
    /* Botão admin responsivo */
    .gdhn-admin-drive-btn span {
        display: none;
    }
    
    .gdhn-admin-drive-btn {
        padding: 12px;
        min-width: 44px;
    }
}

/* === ANIMAÇÕES ADICIONAIS === */
@keyframes gdhn-fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.gdhn-fade-in {
    animation: gdhn-fadeIn 0.3s ease-out;
}

/* === ESTADOS DE CARREGAMENTO === */
.gdhn-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--gdhn-border-radius);
    z-index: 10;
    animation: gdhn-fadeIn 0.2s ease-out;
}

.gdhn-container {
    position: relative;
}

.gdhn-files-section {
    position: relative;
    min-height: 100px; /* Garantir altura mínima para o overlay */
    transition: opacity 0.2s ease;
}

/* === MELHORIAS DE ACESSIBILIDADE === */
.gdhn-nav-chip:focus,
.gdhn-btn:focus,
.gdhn-filter-input:focus {
    outline: 2px solid var(--gdhn-primary);
    outline-offset: 2px;
}

.gdhn-nav-chip:focus:not(:focus-visible),
.gdhn-btn:focus:not(:focus-visible) {
    outline: none;
}

/* === ÍCONES FALLBACK === */
.gdhn-icon-fallback {
    display: inline-block;
    width: 16px;
    height: 16px;
    text-align: center;
    font-style: normal;
}

/* Fallbacks para quando Font Awesome não carrega */
.fa-folder:before { content: "📁"; }
.fa-search:before { content: "🔍"; }
.fa-file-pdf:before { content: "📄"; }
.fa-file-word:before { content: "📝"; }
.fa-file-excel:before { content: "📊"; }
.fa-file-powerpoint:before { content: "📋"; }
.fa-file-alt:before { content: "📃"; }
.fa-file-image:before { content: "🖼️"; }
.fa-file-video:before { content: "🎬"; }
.fa-file-audio:before { content: "🎵"; }
.fa-file-archive:before { content: "📦"; }
.fa-file:before { content: "📎"; }
.fa-eye:before { content: "👁️"; }
.fa-download:before { content: "⬇️"; }

/* Se Font Awesome carregou, esconder fallbacks */
.fa:before, .fas:before, .far:before, .fal:before, .fab:before {
    font-family: "Font Awesome 6 Free", "Font Awesome 6 Pro", "Font Awesome 5 Free", "Font Awesome 5 Pro" !important;
}

/* === DARK MODE SUPPORT === */
@media (prefers-color-scheme: dark) {
    :root {
        --gdhn-gray-50: #303134;
        --gdhn-gray-100: #3c4043;
        --gdhn-gray-200: #5f6368;
        --gdhn-gray-300: #80868b;
        --gdhn-gray-400: #9aa0a6;
        --gdhn-gray-500: #bdc1c6;
        --gdhn-gray-600: #dadce0;
        --gdhn-gray-700: #e8eaed;
        --gdhn-gray-800: #f1f3f4;
        --gdhn-gray-900: #f8f9fa;
    }
    
    .gdhn-container {
        background: var(--gdhn-gray-100);
        border-color: var(--gdhn-gray-200);
        color: var(--gdhn-gray-800);
    }
    
    .gdhn-files-table {
        background: var(--gdhn-gray-100);
    }
}