:root {
    /* Cores Premium Dark Mode e Glassmorphism */
    --bg-main: #0f172a;
    --bg-sidebar: rgba(15, 23, 42, 0.6);
    --bg-card: rgba(30, 41, 59, 0.7);
    --bg-hover: rgba(51, 65, 85, 0.7);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    
    /* Acentos */
    --accent-color: #6366f1; /* Indigo 500 */
    --accent-hover: #4f46e5; /* Indigo 600 */
    --secondary-accent: #ec4899;
    
    --border-color: rgba(255, 255, 255, 0.05);
    
    /* Outros */
    --font-family: 'Inter', sans-serif;
    --border-radius: 8px;
    --border-radius-lg: 16px;
    --transition: all 0.3s ease;
}

/* Tema Claro Opcional (se o usuário clicar no toggle) */
body.light-theme {
    --bg-main: #f3f4f6;
    --bg-sidebar: #ffffff;
    --bg-card: #ffffff;
    --bg-hover: #e5e7eb;
    
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    
    --border-color: #e5e7eb;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-main);
    color: var(--text-primary);
    overflow: hidden; /* O scroll será feito internamente */
}

.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Typography Utilities */
.text-accent {
    color: var(--accent-color);
}

/* Sidebar */
.sidebar {
    width: 320px;
    background-color: var(--bg-sidebar);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    transition: var(--transition);
    z-index: 100;
}

/* Scrollbar styling */
.sidebar::-webkit-scrollbar, .content-wrapper::-webkit-scrollbar {
    width: 6px;
}
.sidebar::-webkit-scrollbar-track, .content-wrapper::-webkit-scrollbar-track {
    background: transparent;
}
.sidebar::-webkit-scrollbar-thumb, .content-wrapper::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 10px;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo i {
    font-size: 28px;
}

.logo h2 {
    font-size: 18px;
    font-weight: 700;
    margin: 0;
}

.logo span {
    font-size: 10px;
    color: var(--accent-color);
    letter-spacing: 1px;
    font-weight: 600;
}

.progress-section {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.progress-header span:last-child {
    color: var(--accent-color);
}

.progress-bar-container {
    height: 6px;
    background-color: var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-bar-fill {
    height: 100%;
    background-color: var(--accent-color);
    width: 0%;
    transition: width 0.5s ease;
}

.progress-text {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Gamification */
.gamification-section {
    padding: 0 24px 24px 24px;
    border-bottom: 1px solid var(--border-color);
}

.level-info {
    display: flex;
    align-items: center;
    gap: 16px;
    background-color: var(--bg-hover);
    padding: 12px;
    border-radius: var(--border-radius);
}

.level-badge {
    width: 40px;
    height: 40px;
    background-color: var(--accent-color);
    color: var(--bg-main);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 16px;
    position: relative;
}

.level-badge i {
    position: absolute;
    top: -5px;
    right: -5px;
    font-size: 12px;
    color: #eab308; /* Star color */
    text-shadow: 0 0 2px rgba(0,0,0,0.5);
}

.level-details {
    display: flex;
    flex-direction: column;
}

.level-title {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-primary);
}

.xp-text {
    font-size: 12px;
    color: var(--accent-color);
    font-weight: 500;
}

.grade-info {
    font-size: 12px;
    color: #10b981;
    font-weight: 600;
    margin-top: 4px;
}

.sidebar-nav {
    padding: 24px;
}

.nav-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    background: transparent;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    padding: 12px 16px;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.nav-item:hover, .nav-item.active {
    background-color: var(--accent-color);
    color: var(--bg-sidebar);
}

/* Modules Accordion Sidebar */
.modules-list {
    padding: 0 16px 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.module-item {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.module-header {
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: var(--transition);
}

.module-header:hover {
    background-color: var(--bg-hover);
}

.module-icon {
    width: 40px;
    height: 40px;
    border-radius: 6px;
    background-size: cover;
    background-position: center;
    flex-shrink: 0;
}

.module-info {
    flex: 1;
}

.module-title {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 4px;
}

.module-progress {
    font-size: 11px;
    color: var(--text-secondary);
}

.module-toggle-icon {
    color: var(--text-secondary);
    transition: transform 0.3s ease;
}

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

.module-item.open .module-header {
    border-bottom: 1px solid var(--border-color);
}

.lessons-list {
    display: none;
    flex-direction: column;
}

.module-item.open .lessons-list {
    display: flex;
}

.lesson-item {
    padding: 12px 16px 12px 48px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
}

.lesson-item:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.lesson-item.active {
    color: var(--accent-color);
    background-color: var(--bg-hover);
}

.lesson-item i {
    font-size: 14px;
}

.lesson-item.completed i {
    color: #10b981; /* Verde */
}

/* Main Content Area */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.topbar {
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-sidebar);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    z-index: 10;
}

.breadcrumb {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.breadcrumb span {
    color: var(--accent-color);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 20px;
    cursor: pointer;
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition);
}

.theme-toggle:hover {
    color: var(--accent-color);
}

.btn-reset {
    background: transparent;
    border: 1px solid #ef4444;
    color: #ef4444;
    padding: 8px 12px;
    border-radius: var(--border-radius);
    font-size: 14px;
    cursor: pointer;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-reset:hover {
    background-color: #ef4444;
    color: white;
}

.content-wrapper {
    flex: 1;
    overflow-y: auto;
    padding: 32px;
}

.view-section {
    display: none;
    animation: fadeIn 0.4s ease;
}

.view-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Home View */
.welcome-banner {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-main) 100%);
    border: 1px solid var(--accent-color);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    margin-bottom: 40px;
    position: relative;
    overflow: hidden;
}

.welcome-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--accent-color);
}

.banner-badge {
    font-size: 11px;
    font-weight: 700;
    color: var(--accent-color);
    letter-spacing: 1px;
    text-transform: uppercase;
    display: block;
    margin-bottom: 12px;
}

.welcome-banner h1 {
    font-size: 28px;
    margin-bottom: 8px;
}

.welcome-banner p {
    color: var(--text-secondary);
    font-size: 15px;
}

.modules-grid-section h2 {
    font-size: 20px;
    margin-bottom: 24px;
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.module-card {
    background-color: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.module-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.card-image {
    height: 160px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.card-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background-color: var(--accent-color);
    color: var(--bg-main);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 700;
}

.card-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-content h3 {
    font-size: 16px;
    margin-bottom: 8px;
}

.card-content p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 24px;
    flex: 1;
}

.card-progress {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-weight: 600;
}

.btn-start-module {
    width: 100%;
    padding: 12px;
    background-color: var(--bg-hover);
    color: var(--text-primary);
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-start-module:hover {
    background-color: var(--accent-color);
    color: var(--bg-main);
}

/* Lesson View */
.video-container {
    background-color: #000;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    margin-bottom: 24px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
}

.video-wrapper iframe, .video-wrapper video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Lesson Text Content */
.lesson-text-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    margin-bottom: 24px;
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-primary);
}

.lesson-text-content h1, 
.lesson-text-content h2, 
.lesson-text-content h3 {
    color: var(--text-primary);
    margin-bottom: 16px;
    margin-top: 24px;
}

.lesson-text-content h2 {
    font-size: 24px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.lesson-text-content p {
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.lesson-text-content ul, 
.lesson-text-content ol {
    margin-bottom: 16px;
    padding-left: 24px;
    color: var(--text-secondary);
}

.lesson-text-content li {
    margin-bottom: 8px;
}

/* Quiz UI */
.quiz-container {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    margin-bottom: 24px;
}

.quiz-header {
    margin-bottom: 24px;
}

.quiz-header h3 {
    color: var(--accent-color);
    margin-bottom: 8px;
}

.quiz-question {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 24px;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.quiz-option {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    padding: 16px 20px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.quiz-option:hover:not(.disabled) {
    background-color: var(--bg-hover);
    border-color: var(--accent-color);
}

.quiz-option.disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.quiz-option.correct {
    background-color: rgba(16, 185, 129, 0.1);
    border-color: #10b981;
    color: #10b981;
}

.quiz-option.wrong {
    background-color: rgba(239, 68, 68, 0.1);
    border-color: #ef4444;
    color: #ef4444;
}

.quiz-feedback {
    margin-top: 24px;
    padding: 16px;
    border-radius: var(--border-radius);
    display: none;
    background-color: var(--bg-hover);
}

.quiz-feedback.show {
    display: block;
}

.quiz-feedback h4 {
    margin-bottom: 8px;
}

.quiz-feedback p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Tooltip Glossário */
.glossary-term {
    color: var(--accent-color);
    font-weight: 600;
    text-decoration: underline dotted;
    cursor: help;
    position: relative;
}

.glossary-term::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 120%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--text-primary);
    color: var(--bg-main);
    padding: 8px 12px;
    border-radius: var(--border-radius);
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 100;
}

.glossary-term:hover::after {
    opacity: 1;
    visibility: visible;
}

/* Simulador UI */
.simulator-container {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    margin-bottom: 24px;
}

.simulator-header {
    margin-bottom: 24px;
    text-align: center;
}

.simulator-header h3 {
    color: var(--accent-color);
    font-size: 20px;
    margin-bottom: 8px;
}

.phishing-email {
    background-color: #fff;
    color: #333;
    border: 1px solid #ccc;
    border-radius: 8px;
    padding: 24px;
    font-family: Arial, sans-serif;
    margin-top: 16px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.phishing-email-header {
    border-bottom: 1px solid #eee;
    padding-bottom: 16px;
    margin-bottom: 16px;
}

.phishing-email-header p {
    margin: 4px 0;
    font-size: 14px;
}

.phishing-link {
    display: inline-block;
    background-color: #0056b3;
    color: white !important;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 4px;
    margin-top: 16px;
    font-weight: bold;
    cursor: pointer;
}

.phishing-link:hover:not(.disabled) {
    background-color: #004494;
}

.btn-primary.disabled, .btn-secondary.disabled, .phishing-link.disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.phishing-feedback {
    margin-top: 24px;
    padding: 16px;
    border-radius: var(--border-radius);
    display: none;
}

.phishing-feedback.show {
    display: block;
}

.phishing-feedback.success {
    background-color: rgba(16, 185, 129, 0.1);
    border: 1px solid #10b981;
    color: #10b981;
}

.phishing-feedback.error {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid #ef4444;
    color: #ef4444;
}

.lesson-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    gap: 16px;
}

.btn-primary, .btn-secondary {
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    border: none;
}

.btn-primary {
    background-color: var(--accent-color);
    color: var(--bg-sidebar);
}

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

.btn-secondary {
    background-color: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-hover);
}

.btn-secondary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.lesson-details {
    background-color: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    border: 1px solid var(--border-color);
}

.lesson-header-info {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 24px;
    margin-bottom: 24px;
}

.lesson-header-info h2 {
    font-size: 24px;
}

.lesson-bottom-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

@media (max-width: 992px) {
    .lesson-bottom-grid {
        grid-template-columns: 1fr;
    }
}

.notebook-section h3 {
    font-size: 18px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.notebook-section p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
}

#lesson-notes {
    width: 100%;
    min-height: 200px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 16px;
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 14px;
    resize: vertical;
    transition: var(--transition);
}

#lesson-notes:focus {
    outline: none;
    border-color: var(--accent-color);
}

.lesson-support h3 {
    font-size: 18px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.lesson-support p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
}

.comment-box {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 14px 16px;
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 14px;
    transition: var(--transition);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

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

.comment-box .btn-primary {
    align-self: flex-start;
}

/* Mobile Responsiveness */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0,0,0,0.5);
    z-index: 90;
    backdrop-filter: blur(4px);
}

@media (max-width: 992px) {
    .sidebar {
        position: fixed;
        left: -320px;
        height: 100vh;
    }
    
    .main-content {
        margin-left: 0 !important;
        width: 100%;
    }
    
    .sidebar.active {
        left: 0;
    }
    
    .sidebar-overlay.active {
        display: block;
    }
    
    .mobile-toggle {
        display: block;
    }
    
    .topbar {
        padding: 0 20px;
    }
    
    .content-wrapper {
        padding: 20px;
    }
    
    .lesson-controls {
        flex-direction: column;
    }
    
    .lesson-controls button {
        width: 100%;
        justify-content: center;
    }
}

/* Certificate Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0,0,0,0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--bg-main);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    max-width: 900px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    border: 1px solid var(--border-color);
}

.close-modal {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    transition: var(--transition);
}

.close-modal:hover {
    color: var(--text-primary);
}

.certificate-canvas-container {
    width: 100%;
    overflow-x: auto;
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
}

#certificate-canvas {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.certificate-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
}

/* btnEmitirCertificado in Sidebar */
#btn-emit-cert {
    width: 100%;
    margin-top: 16px;
    padding: 12px;
    background-color: var(--accent-color);
    color: var(--bg-sidebar);
    border: none;
    border-radius: var(--border-radius);
    font-weight: bold;
    cursor: pointer;
    display: none; /* Só mostra quando 100% */
}

#btn-emit-cert:hover {
    background-color: var(--accent-hover);
}

/* --- NOVO: Login e Admin --- */
body.login-layout .sidebar {
    display: none;
}
body.login-layout .topbar {
    display: none;
}
body.login-layout .main-content {
    margin-left: 0;
    width: 100vw;
}

.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80vh;
}

.login-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    width: 100%;
    max-width: 400px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.login-header {
    text-align: center;
    margin-bottom: 24px;
}
.login-header h2 {
    color: var(--text-primary);
    margin-bottom: 8px;
}
.login-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-size: 14px;
}
.form-group input {
    width: 100%;
    padding: 12px;
    background-color: var(--bg-hover);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    outline: none;
    transition: var(--transition);
}
.form-group input:focus {
    border-color: var(--accent-color);
}
.login-btn {
    width: 100%;
    margin-top: 8px;
}
.login-hint {
    margin-top: 16px;
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
}

.admin-header {
    margin-bottom: 32px;
}
.admin-header h2 {
    margin-bottom: 8px;
}

.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}
.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    gap: 16px;
}
.stat-card i {
    font-size: 32px;
    color: var(--accent-color);
}
.stat-info h3 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}
.stat-info span {
    font-size: 24px;
    font-weight: bold;
    color: var(--text-primary);
}

.admin-table-container {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
}
.admin-table-container h3 {
    margin-bottom: 16px;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}
.admin-table th, .admin-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}
.admin-table th {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
}
.admin-table td {
    color: var(--text-primary);
    font-size: 14px;
}
.admin-table tr:hover td {
    background-color: var(--bg-hover);
}
.status-badge {
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: bold;
}
.status-badge.active {
    background-color: rgba(16, 185, 129, 0.2);
    color: #10b981;
}

.btn-logout, .btn-profile {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    transition: var(--transition);
}
.btn-logout:hover, .btn-profile:hover {
    color: var(--accent-color);
}

/* --- View Switching --- */
.view-section {
    display: none;
}
.view-section.active {
    display: block;
}

/* --- Login Layout Constraints --- */
body.login-layout .sidebar {
    display: none !important;
}
body.login-layout .topbar {
    display: none !important;
}
body.login-layout .content-wrapper {
    margin-left: 0;
    padding: 0;
    width: 100%;
    min-height: 100vh;
    display: block;
}

body.login-layout .student-footer {
    display: none !important;
}

#view-login.active {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

/* --- Login Card --- */
.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}
.login-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}
.login-header {
    text-align: center;
    margin-bottom: 30px;
}
.login-header h2 {
    color: var(--text-primary);
    font-size: 24px;
    margin-bottom: 8px;
}
.login-header p {
    color: var(--text-secondary);
    font-size: 14px;
}
.login-btn {
    width: 100%;
    margin-top: 20px;
    padding: 12px;
    font-size: 16px;
}
.login-hint {
    text-align: center;
    margin-top: 20px;
    font-size: 12px;
    color: var(--text-secondary);
}
.login-hint strong {
    color: var(--accent-color);
}

/* --- Admin View --- */
.admin-header {
    margin-bottom: 30px;
}
.admin-header h2 {
    color: var(--text-primary);
    font-size: 28px;
    margin-bottom: 8px;
}
.admin-header p {
    color: var(--text-secondary);
}
.admin-stats {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}
.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    flex: 1;
    display: flex;
    align-items: center;
    gap: 20px;
}
.stat-card i {
    font-size: 40px;
    color: var(--accent-color);
}
.stat-card h3 {
    color: var(--text-secondary);
    font-size: 14px;
    text-transform: uppercase;
    margin-bottom: 5px;
}
.stat-card p {
    color: var(--text-primary);
    font-size: 24px;
    font-weight: bold;
}
.admin-table-container {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    overflow-x: auto;
}
.admin-table {
    width: 100%;
    border-collapse: collapse;
}
.admin-table th, .admin-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}
.admin-table th {
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 12px;
}
.admin-table tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

@media (max-width: 768px) {
    .admin-stats {
        flex-direction: column;
    }
}

/* Attendance Timeline Styles */
.attendance-timeline {
    position: relative;
    padding-left: 20px;
    margin-top: 15px;
}
.attendance-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 4px;
    height: 100%;
    width: 2px;
    background-color: var(--border-color);
}
.timeline-item {
    position: relative;
    margin-bottom: 20px;
}
.timeline-item::before {
    content: '';
    position: absolute;
    top: 5px;
    left: -20px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--accent-color);
    box-shadow: 0 0 0 3px var(--bg-card);
}
.timeline-date {
    font-size: 11px;
    color: var(--text-secondary);
    margin-bottom: 2px;
}
.timeline-action {
    font-size: 14px;
    color: var(--text-primary);
}

/* --- Admin Layout V2 --- */
.admin-layout {
    display: flex;
    min-height: 100vh;
    width: 100%;
    background-color: var(--bg-body);
}
.admin-sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}
.admin-sidebar-header {
    padding: 24px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}
.admin-sidebar-header h2 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}
.admin-sidebar-nav {
    padding: 20px 10px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    flex: 1;
}
.admin-nav-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 12px 16px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
    width: 100%;
}
.admin-nav-btn:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}
.admin-nav-btn.active {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--accent-color);
}
.admin-sidebar-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 10px 0;
}
.admin-main {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
}
.admin-topbar {
    height: 70px;
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
    position: sticky;
    top: 0;
    z-index: 90;
}
.admin-topbar-title h3 {
    font-size: 16px;
    color: var(--text-primary);
}
.admin-topbar-user {
    display: flex;
    align-items: center;
    gap: 12px;
}
.admin-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(245, 158, 11, 0.2);
    color: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}
.admin-body {
    padding: 30px;
    flex: 1;
}
.admin-footer {
    padding: 20px 30px;
    text-align: center;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-card);
    color: var(--text-muted);
    font-size: 12px;
}
@media (max-width: 768px) {
    .admin-sidebar {
        display: none;
    }
    .admin-main {
        margin-left: 0;
    }
    .admin-table-container {
        overflow-x: auto;
    }
    .admin-body {
        padding: 15px;
    }
    .admin-stats {
        flex-direction: column;
    }
}

/* --- Course Builder --- */
.builder-module-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 10px;
}
.builder-module-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}
.builder-module-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}
.builder-controls {
    display: flex;
    gap: 8px;
}
.builder-btn {
    background-color: var(--bg-hover);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s;
}
.builder-btn:hover {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}
.builder-btn.danger:hover {
    background-color: #ef4444;
    border-color: #ef4444;
}
.builder-lesson-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 15px;
    padding-left: 20px;
    border-left: 2px solid var(--border-color);
}
.builder-lesson-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-body);
    padding: 10px 15px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}
.builder-lesson-title {
    font-size: 14px;
    color: var(--text-secondary);
}

/* --- UX ENHANCEMENTS: LOGIN & TOAST --- */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 9999; display: flex; flex-direction: column; gap: 10px; }
.toast { background: var(--bg-card); color: var(--text-primary); padding: 15px 25px; border-radius: 8px; box-shadow: 0 10px 25px rgba(0,0,0,0.5); display: flex; align-items: center; gap: 12px; transform: translateX(120%); opacity: 0; transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55); border-left: 4px solid var(--accent-color); font-weight: 500; }
.toast.show { transform: translateX(0); opacity: 1; }
.toast.success { border-left-color: #10b981; }
.toast.error { border-left-color: #ef4444; }
.toast.info { border-left-color: #3b82f6; }
.auth-tabs { display: flex; border-bottom: 1px solid var(--border-color); margin-bottom: 20px; gap: 20px; }
.auth-tab { background: transparent; border: none; color: var(--text-muted); font-size: 16px; font-weight: 600; padding: 10px 0; cursor: pointer; position: relative; }
.auth-tab.active { color: var(--text-primary); }
.auth-tab.active::after { content: ''; position: absolute; bottom: -1px; left: 0; width: 100%; height: 2px; background: var(--accent-color); }
.password-input-wrapper { position: relative; display: flex; align-items: center; }
.btn-toggle-password { position: absolute; right: 10px; background: none; border: none; color: var(--text-muted); cursor: pointer; padding: 5px; font-size: 14px; }
.btn-toggle-password:hover { color: var(--text-primary); }
.forgot-password-link { color: var(--accent-color); font-size: 12px; text-decoration: none; }
.forgot-password-link:hover { text-decoration: underline; }

/* Drag and Drop Builder */
.builder-module-card.dragging { opacity: 0.5; border: 2px dashed var(--accent-color); }
.builder-lesson-item.dragging { opacity: 0.5; border: 1px dashed var(--accent-color); }
.drag-handle:hover { color: var(--text-primary) !important; }

/* --- Mobile Responsiveness Fixes --- */
@media (max-width: 768px) {
    /* Global App Container */
    body {
        overflow-y: auto; /* Permite scroll natural no mobile se o layout interno quebrar */
    }
    
    /* Login Page */
    .login-container { padding: 10px; min-height: 100vh; }
    .login-card { padding: 20px; margin: 10px; width: calc(100% - 20px); }
    .login-header h2 { font-size: 20px; }
    
    /* Video Responsiveness */
    .video-container {
        width: 100%;
        display: block;
    }
    .video-wrapper iframe, .video-wrapper video {
        max-height: 100vh;
    }
    
    /* Admin View */
    .admin-layout {
        flex-direction: column;
        min-height: auto;
    }
    .admin-main {
        width: 100%;
        margin-left: 0;
    }
    .admin-body {
        padding: 15px;
    }
    .admin-sidebar {
        display: block !important;
        width: 100%;
        height: auto;
        position: static;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 15px;
    }
    .admin-sidebar-nav {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-top: 10px;
    }
    .admin-nav-btn {
        flex: 1 1 calc(50% - 8px);
        font-size: 13px;
        padding: 10px;
        text-align: center;
        justify-content: center;
    }
    .admin-sidebar-divider { display: none; }
    
    /* Builder */
    .builder-lesson-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    .builder-lesson-item .builder-controls {
        width: 100%;
        justify-content: flex-end;
    }
    .builder-module-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    .builder-module-header .builder-controls {
        width: 100%;
        justify-content: flex-end;
    }
}

/* Utility Classes */
.d-flex { display: flex; }
.flex-column { display: flex; flex-direction: column; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-10 { gap: 10px; }
.gap-15 { gap: 15px; }
.gap-20 { gap: 20px; }
.flex-1 { flex: 1; }

.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.fs-12 { font-size: 12px; }
.fs-13 { font-size: 13px; }
.fs-14 { font-size: 14px; }
.fs-16 { font-size: 16px; }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-accent { color: var(--accent-color); }
.text-muted { color: var(--text-muted); }

.m-0 { margin: 0; }
.mt-40 { margin-top: 40px; }
.mb-15 { margin-bottom: 15px; }
.mb-16 { margin-bottom: 16px; }
.mb-20 { margin-bottom: 20px; }
.ml-15 { margin-left: 15px; }

.w-100 { width: 100%; }
.min-h-content { min-height: calc(100vh - 70px); }

.d-none { display: none !important; }

/* Modal Sizes */
.modal-sm { max-width: 400px; }
.modal-md { max-width: 500px; }
.modal-lg { max-width: 600px; }
.modal-xl { max-width: 850px; }
.modal-xxl { max-width: 1400px; width: 95%; height: 90vh; display: flex; flex-direction: row; padding: 0; overflow: hidden; background-color: var(--bg-main); }

/* Specific Components */
.scroll-container { max-height: 400px; overflow-y: auto; }
.certificate-preview-sidebar { width: 350px; background-color: var(--bg-card); border-right: 1px solid var(--border-color); padding: 20px; overflow-y: auto; display: flex; flex-direction: column; gap: 15px; }
.certificate-preview-main { flex: 1; display: flex; justify-content: center; align-items: center; background-color: var(--bg-main); overflow: hidden; position: relative; }
.btn-blue { background: #3b82f6; color: white; border-color: #3b82f6; text-decoration: none; }
.btn-blue:hover { background: #2563eb; }
.impersonate-banner { display: none; background: #ef4444; color: white; padding: 10px 20px; text-align: center; font-weight: bold; border-radius: 8px; margin-bottom: 20px; }

/* Course Page Utils */
.nav-item-link { text-decoration: none; color: inherit; }
.lessons-list-expanded { display: block; }
.view-section-visible { display: block; }
.video-placeholder { width: 100%; height: 100%; background: #000; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 24px; text-align: center; border-radius: 8px; flex-direction: column; }
.video-placeholder span { font-size: 16px; margin-top: 10px; display: block; color: #ccc; }
.lesson-title { margin-top: 20px; }
.lesson-desc { color: var(--text-secondary); margin-top: 10px; display: none; }
.lesson-desc-visible { display: block; }
.lesson-content { margin-top: 20px; line-height: 1.6; color: var(--text-primary); }
.course-footer { margin-top: auto; padding: 20px; text-align: center; border-top: 1px solid var(--border-color); }

/* ========================================
   RESPONSIVIDADE – PÁGINAS DE CURSO
   ======================================== */

/* Tablet */
@media (max-width: 1024px) {
    .sidebar {
        width: 260px;
    }
    .content-wrapper {
        padding: 20px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    body {
        overflow: auto; /* Permite scroll no mobile */
    }

    .app-container {
        flex-direction: column;
        height: auto;
        min-height: 100vh;
    }

    /* Sidebar vira menu deslizante */
    .sidebar {
        position: fixed;
        top: 0;
        left: -100%;
        width: 85%;
        max-width: 320px;
        height: 100vh;
        z-index: 1000;
        transition: left 0.3s ease;
        overflow-y: auto;
    }

    .sidebar.open {
        left: 0;
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.5);
    }

    /* Overlay escuro ao abrir o menu */
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.6);
        z-index: 999;
    }

    .sidebar-overlay.show {
        display: block;
    }

    /* Área principal ocupa tudo */
    .main-content {
        width: 100%;
        height: auto;
        overflow: visible;
    }

    /* Topbar: mostra botão hambúrguer */
    .topbar {
        padding: 0 16px;
        height: 60px;
    }

    .mobile-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .breadcrumb {
        font-size: 10px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 60vw;
    }

    /* Conteúdo principal */
    .content-wrapper {
        padding: 16px;
        overflow: visible;
    }

    /* Vídeo responsivo */
    .video-container {
        margin-bottom: 16px;
    }

    /* Texto da apostila */
    .lesson-text-content {
        padding: 20px;
        font-size: 15px;
    }

    /* Quiz */
    .quiz-container {
        padding: 20px;
    }

    /* Módulos grid */
    .modules-grid {
        grid-template-columns: 1fr;
    }

    /* Sidebar header menor */
    .sidebar-header {
        padding: 16px;
    }

    .logo h2 {
        font-size: 15px;
    }
}

/* Telas muito pequenas */
@media (max-width: 480px) {
    .topbar {
        padding: 0 12px;
    }

    h1, .lesson-text-content h2 {
        font-size: 1.4rem;
    }

    .btn {
        padding: 12px 20px;
        font-size: 0.95rem;
    }
}