/* Reset e Variáveis */
:root {
    --primary-color: #4a90e2;
    --secondary-color: #50c878;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --info-color: #3498db;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
    --text-color: #333;
    --border-color: #ddd;
    --sidebar-width: 300px;
    --header-height: 60px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background: #f5f5f5;
}

/* Login Page */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    color: var(--primary-color);
    font-size: 28px;
    margin-bottom: 10px;
}

.login-header p {
    color: #666;
    font-size: 14px;
}

.login-form .form-group {
    margin-bottom: 20px;
}

.login-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

.login-form input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.login-footer {
    margin-top: 20px;
    text-align: center;
    color: #666;
}

/* Dashboard Page */
.dashboard-container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--dark-color);
    color: white;
    display: flex;
    flex-direction: column;
    height: 100vh; /* Altura total da tela */
    overflow: hidden; /* Remove scroll geral */
}

.sidebar-header {
    padding: 20px;
    background: rgba(0,0,0,0.2);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    flex-shrink: 0; /* Não encolhe */
}

.sidebar-header h2 {
    font-size: 20px;
    margin-bottom: 5px;
}

.sidebar-header .user-name {
    font-size: 14px;
    opacity: 0.8;
}

.progress-info {
    padding: 20px;
    background: rgba(0,0,0,0.1);
    flex-shrink: 0; /* Não encolhe */
}

.progress-info p {
    font-size: 12px;
    margin-bottom: 8px;
    opacity: 0.9;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255,255,255,0.2);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    background: var(--secondary-color);
    transition: width 0.3s;
}

.progress-text {
    font-size: 11px;
    opacity: 0.7;
}

/* Barra de progresso pequena para disciplinas */
.disciplina-progress-item {
    list-style: none !important;
    padding: 12px 20px !important;
    margin: 0 !important;
    background: rgba(255,255,255,0.05) !important;
    border-bottom: 1px solid rgba(0,0,0,0.1) !important;
}

.disciplina-progress {
    padding: 0 !important;
    margin: 0 !important;
    width: 100% !important;
    display: block !important;
}

.progress-bar-small {
    position: relative !important;
    width: 100% !important;
    height: 24px !important;
    background: rgba(255,255,255,0.15) !important;
    border-radius: 12px !important;
    overflow: hidden !important;
    margin: 0 !important;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.2) !important;
    display: block !important;
}

.progress-bar-small .progress-fill {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    height: 100% !important;
    background: linear-gradient(90deg, #50c878, #3ea863) !important;
    transition: width 0.4s ease !important;
    min-width: 0 !important;
    display: block !important;
}

.progress-text-small {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    height: 100% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 11px !important;
    font-weight: 600 !important;
    margin: 0 !important;
    color: #fff !important;
    text-shadow: 0 1px 3px rgba(0,0,0,0.5) !important;
    z-index: 2 !important;
    pointer-events: none !important;
}

.sidebar-nav {
    flex: 1; /* Ocupa todo o espaço disponível entre header e footer */
    padding: 10px 0;
    overflow-y: auto; /* Scroll apenas na área de navegação */
    overflow-x: hidden;
    min-height: 0; /* Importante para o flex funcionar corretamente */
}

/* Estilo da scrollbar para sidebar-nav */
.sidebar-nav::-webkit-scrollbar {
    width: 8px;
}

.sidebar-nav::-webkit-scrollbar-track {
    background: rgba(0,0,0,0.2);
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.2);
    border-radius: 4px;
}

.sidebar-nav::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.3);
}

.disciplina-item {
    margin-bottom: 5px;
}

.disciplina-header {
    padding: 12px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: background 0.2s;
}

.disciplina-header:hover {
    background: rgba(255,255,255,0.05);
}

.disciplina-icon {
    font-size: 18px;
}

.disciplina-nome {
    flex: 1;
    font-weight: 500;
}

.toggle-icon {
    font-size: 12px;
    transition: transform 0.3s;
}

.disciplina-item.open .toggle-icon {
    transform: rotate(180deg);
}

.aulas-list {
    list-style: none;
    background: rgba(0,0,0,0.15);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.disciplina-item.open .aulas-list {
    max-height: 2000px; /* Altura máxima grande para transição suave */
    overflow: visible; /* Remove scroll interno, usa o da sidebar-nav */
}

.aula-item a {
    display: flex;
    align-items: center;
    padding: 10px 20px 10px 40px;
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    gap: 10px;
    transition: all 0.2s;
}

.aula-item a:hover {
    background: rgba(255,255,255,0.08);
    color: white;
}

.aula-item.active a {
    background: var(--primary-color);
    color: white;
}

.aula-check {
    font-size: 16px;
    width: 20px;
}

.aula-check.checked {
    color: var(--secondary-color);
}

.aula-titulo {
    font-size: 13px;
}

.sidebar-footer {
    padding: 10px;
    border-top: 1px solid rgba(255,255,255,0.1);
    flex-shrink: 0; /* Não encolhe */
}

/* Main Content */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px; /* Reduzido de 30px para 20px */
    background: #f8f9fa;
}

.video-section {
    background: white;
    border-radius: 10px;
    padding: 10px; /* Reduzido de 30px para 20px */
    margin-bottom: 10px; /* Reduzido de 30px para 20px */
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.video-header h1 {
    font-size: 24px; /* Reduzido de 28px para 24px */
    margin-bottom: 8px; /* Reduzido de 10px para 8px */
    color: var(--dark-color);
}

.disciplina-tag {
    display: inline-block;
    padding: 4px 12px; /* Reduzido de 5px 15px */
    background: var(--primary-color);
    color: white;
    border-radius: 20px;
    font-size: 11px; /* Reduzido de 12px para 11px */
    margin-bottom: 15px; /* Reduzido de 20px para 15px */
}

/* Layout de duas colunas para vídeo e anotações */
.video-content-wrapper {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 15px; /* Reduzido de 20px para 15px */
    margin-bottom: 15px; /* Reduzido de 20px para 15px */
}

.video-player-area {
    min-width: 0; /* Importante para o grid não expandir */
}

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 */
    height: 0;
    overflow: hidden;
    border-radius: 8px;
    margin-bottom: 15px;
}

.video-container iframe,
.video-container video,
.video-container .video-js,
.video-container .plyr {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 8px;
}

.video-container video {
    background: #000;
    object-fit: contain;
}

/* Plyr customização */
.plyr {
    --plyr-color-main: #667eea;
    --plyr-video-background: #000;
    --plyr-menu-background: rgba(0, 0, 0, 0.9);
    --plyr-menu-color: #fff;
}

.plyr__control--overlaid {
    background: rgba(102, 126, 234, 0.8);
}

.plyr__control--overlaid:hover {
    background: rgba(102, 126, 234, 1);
}

.plyr__control:hover {
    background: rgba(102, 126, 234, 0.8);
}

.plyr--video .plyr__control.plyr__tab-focus,
.plyr--video .plyr__control:hover,
.plyr--video .plyr__control[aria-expanded=true] {
    background: #667eea;
}

.plyr__menu__container .plyr__control[role=menuitemradio][aria-checked=true]::before {
    background: #667eea;
}

/* Video.js removido - não é mais necessário */

.video-source-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 5px 12px;
    border-radius: 5px;
    font-size: 12px;
    font-weight: 600;
    z-index: 10;
    pointer-events: none;
    max-width: 300px;
    text-align: right;
}

.video-source-badge.local {
    background: rgba(76, 175, 80, 0.9);
    color: white;
}

.video-source-badge.youtube {
    background: rgba(255, 0, 0, 0.9);
    color: white;
}

.error-message {
    padding: 40px 20px;
    text-align: center;
    background: #fff3cd;
    border: 2px dashed #ffc107;
    border-radius: 8px;
    color: #856404;
}

.error-message h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #721c24;
}

.error-message p {
    margin: 5px 0;
    color: #666;
}

.error-message code {
    background: #f5f5f5;
    padding: 3px 8px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    color: #d63384;
    font-size: 13px;
}

.video-sidebar-area {
    display: flex;
    flex-direction: column;
    gap: 15px; /* Reduzido de 20px para 15px */
}

.video-actions-card {
    background: white;
    border-radius: 10px;
    padding: 15px; /* Reduzido de 20px para 15px */
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.video-actions {
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.checkbox-container {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 16px;
    user-select: none;
}

.checkbox-container input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.check-status {
    display: block;
    margin-top: 8px; /* Reduzido de 10px para 8px */
    font-size: 13px; /* Reduzido de 14px para 13px */
    color: var(--secondary-color);
}

.video-description {
    background: white;
    border-radius: 10px;
    padding: 15px; /* Reduzido de 20px para 15px */
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.video-description h3 {
    font-size: 16px; /* Reduzido de 18px para 16px */
    margin-bottom: 8px; /* Reduzido de 10px para 8px */
    color: var(--dark-color);
}

.notes-section {
    background: white;
    border-radius: 10px;
    padding: 15px; /* Reduzido de 20px para 15px */
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.notes-section h3 {
    font-size: 16px; /* Reduzido de 18px para 16px */
    margin-bottom: 12px; /* Reduzido de 15px para 12px */
    color: var(--dark-color);
}

.notes-section textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 14px;
    font-family: inherit;
    resize: vertical;
    flex: 1;
    margin-bottom: 15px;
}

.save-status {
    margin-left: 10px;
    font-size: 14px;
    color: var(--secondary-color);
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state h2 {
    color: var(--dark-color);
    margin-bottom: 10px;
}

/* Admin Page */
.admin-container {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 250px;
    background: var(--dark-color);
    color: white;
    display: flex;
    flex-direction: column;
}

.admin-nav {
    flex: 1;
    padding: 10px 0;
}

.admin-nav .nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px 20px;
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: all 0.2s;
}

.admin-nav .nav-item:hover {
    background: rgba(255,255,255,0.05);
    color: white;
}

.admin-nav .nav-item.active {
    background: var(--primary-color);
    color: white;
}

.admin-nav .nav-item span {
    font-size: 20px;
}

.admin-content {
    flex: 1;
    padding: 30px;
    background: #f8f9fa;
    overflow-y: auto;
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.content-header h1 {
    font-size: 28px;
    color: var(--dark-color);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.stat-icon {
    font-size: 40px;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--info-color));
    border-radius: 10px;
}

.stat-info h3 {
    font-size: 32px;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.stat-info p {
    color: #666;
    font-size: 14px;
}

/* Content Section */
.content-section {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.content-section h2 {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--dark-color);
}

/* Table */
.table-container {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead {
    background: var(--dark-color);
    color: white;
}

.data-table th {
    padding: 15px;
    text-align: left;
    font-weight: 500;
    font-size: 14px;
}

.data-table td {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

.data-table tbody tr:hover {
    background: #f8f9fa;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background: #d4edda;
    color: #155724;
}

.badge-danger {
    background: #f8d7da;
    color: #721c24;
}

.badge-warning {
    background: #fff3cd;
    color: #856404;
}

.badge-info {
    background: #d1ecf1;
    color: #0c5460;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    transition: all 0.3s;
}

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

.btn-primary:hover {
    background: #357abd;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.4);
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background: #c0392b;
}

.btn-info {
    background: var(--info-color);
    color: white;
}

.btn-info:hover {
    background: #2980b9;
}

.btn-logout {
    width: 100%;
    background: rgba(255,255,255,0.1);
    color: white;
}

.btn-logout:hover {
    background: rgba(255,255,255,0.2);
}

.btn-block {
    width: 100%;
    display: block;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 12px;
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.5);
}

.modal.show {
    display: block;
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    width: 90%;
    max-width: 600px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.modal-header {
    padding: 20px 25px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 22px;
    color: var(--dark-color);
}

.close {
    color: #aaa;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.close:hover {
    color: #000;
}

.modal-content form {
    padding: 25px;
}

.modal-footer {
    padding: 20px 25px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* Form */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 14px;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Responsive */
@media (max-width: 768px) {
    .dashboard-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        max-height: 50vh;
    }
    
    /* Layout de vídeo em uma coluna em telas pequenas */
    .video-content-wrapper {
        grid-template-columns: 1fr;
    }
    
    .video-sidebar-area {
        order: 2;
    }
    
    .video-player-area {
        order: 1;
    }
    
    .admin-container {
        flex-direction: column;
    }
    
    .admin-sidebar {
        width: 100%;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .content-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
}