/* === CORE STYLES - PRO Concursos Sala de Estudos ===
 * Arquivo centralizado de estilos CSS
 * Consolidado de: saladeestudos.html, header_saladeestudos.html e styles.css
 * Versão: 1.0.0
 * Data: 2024-01-20
 */

/* === VARIÁVEIS CSS UNIFICADAS === */
:root {
    /* Layout */
    --header-height: 55px;
    --sidebar-width: 320px;
    --sidebar-collapsed-width: 60px;
    --animation-speed: 0.3s;

    /* Cores Principais */
    --main-color: #2c5aa0;
    --light-highlight-bg: #bfc9df;
    --accent-1: #ff6b35;
    --accent-1-darker: #e55a2b;
    --accent-2: #4ecdc4;
    --accent-3: #ffe66d;
    --dark-bg: #1a365d;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --error-color: #dc3545;
    --info-color: #17a2b8;

    /* Texto */
    --text-dark: #2d3748;
    --text-light: #ffffff;
    --text-muted: #718096;

    /* Bordas e Fundo */
    --border-color: #e2e8f0;
    --light-grey-bg: #f7fbff;
    --header-bg: rgba(240, 247, 255, 0.95);
    --header-border: #e2e8f0;
    --main-content-bg: #ffffff;
    --sidebar-bg: #f8fafc;
    --sidebar-border: #e2e8f0;

    /* Sombras */
    --card-shadow: 0 4px 12px rgba(0,0,0,0.08);
    --card-hover-shadow: 0 8px 25px rgba(0,0,0,0.15);

    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, #2c5aa0 0%, #4ecdc4 100%);
    --gradient-accent: linear-gradient(135deg, #ff6b35 0%, #ffe66d 100%);
}

/* === MODO ESCURO === */
body.dark-mode {
    --main-color: #63b3ed;
    --light-highlight-bg: #1a202c;
    --accent-1: #ff8a65;
    --accent-1-darker: #ff7043;
    --accent-2: #4fd1c7;
    --accent-3: #ffd93d;
    --dark-bg: #0f1419;
    --text-dark: #e2e8f0;
    --text-light: #ffffff;
    --text-muted: #a0aec0;
    --border-color: #2d3748;
    --light-grey-bg: #1a202c;
    --header-bg: rgba(26, 32, 44, 0.95);
    --header-border: #2d3748;
    --main-content-bg: #1a202c;
    --sidebar-bg: #1a202c;
    --sidebar-border: #2d3748;
    --card-shadow: 0 4px 12px rgba(0,0,0,0.3);
    --card-hover-shadow: 0 8px 25px rgba(0,0,0,0.4);
    --gradient-primary: linear-gradient(135deg, #63b3ed 0%, #4fd1c7 100%);
    --gradient-accent: linear-gradient(135deg, #ff8a65 0%, #ffd93d 100%);
}

/* === RESET E BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    height: 100%;
    font-size: 16px;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    height: 100vh;
    background: var(--light-grey-bg);
    color: var(--text-dark);
    overflow: hidden;
    transition: all var(--animation-speed) ease;
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 0;
    padding-top: var(--header-height);
}

/* === LAYOUT PRINCIPAL === */
.study-layout {
    display: flex;
    flex: 1;
    height: calc(100vh - var(--header-height));
    overflow: hidden;
    min-height: 0;
    position: relative;
}

/* === SIDEBAR === */
.study-sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    display: flex;
    flex-direction: column;
    transition: all var(--animation-speed) cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 999;
    box-shadow: var(--card-shadow);
}

.study-sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

/* === HEADER === */
.w3s-header {
    background-color: var(--header-bg);
    color: var(--text-dark);
    display: flex;
    align-items: center;
    padding: 0 15px;
    height: var(--header-height);
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 105;
    border-bottom: 1px solid var(--header-border);
    gap: 10px;
    box-sizing: border-box;
}

.w3s-sidebar-toggle {
    background-color: transparent;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 0 15px;
    color: var(--text-dark);
    line-height: var(--header-height);
    transition: color 0.3s;
}

.w3s-sidebar-toggle:hover {
    color: var(--main-color);
}

.w3s-logo-area {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    padding-left: 10px;
    height: 100%;
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-dark);
}

.w3s-logo-placeholder {
    width: 40px;
    height: 40px;
    margin-right: 8px;
}

.w3s-logo-placeholder circle {
    fill: var(--main-color);
}

.w3s-logo-placeholder text {
    font-size: 16px;
    fill: white;
    font-weight: bold;
}

.logo-text {
    font-weight: bold;
    font-size: 20px;
}

/* === NAVEGAÇÃO === */
.w3s-nav-menu {
    display: flex;
    align-items: center;
    height: 100%;
    margin-left: 40px;
}

.nav-item {
    height: 100%;
}

.nav-button {
    display: flex;
    align-items: center;
    padding: 0 15px;
    height: 100%;
    color: var(--text-dark);
    font-size: 15px;
    background-color: transparent;
    border: none;
    border-right: 1px solid var(--header-border);
    cursor: pointer;
    transition: background-color 0.2s;
}

.nav-item:first-child .nav-button {
    border-left: 1px solid var(--header-border);
}

.nav-button:hover {
    background-color: var(--light-highlight-bg);
}

/* === DROPDOWN MENUS === */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--main-content-bg);
    border: 1px solid var(--border-color);
    border-radius: 0 0 8px 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    min-width: 220px;
    z-index: 9999;
    display: none;
    flex-direction: column;
    max-height: 400px;
    overflow-y: auto;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.2s ease;
}

.dropdown-menu.show {
    display: flex;
    opacity: 1;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    color: var(--text-dark);
    text-decoration: none;
    font-size: 14px;
    background: none;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s ease;
    gap: 8px;
    white-space: nowrap;
}

.dropdown-item:hover {
    background-color: var(--light-highlight-bg);
}

.dropdown-icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.dropdown-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 4px 0;
}

/* === ÁREA DE BUSCA === */
.w3s-search-area {
    display: flex;
    align-items: center;
    max-width: 220px;
}

.w3s-search-area input[type="text"] {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 25px 0 0 25px;
    font-size: 14px;
    width: 100%;
    border-right: none;
    height: 36px;
    background-color: var(--main-content-bg);
    color: var(--text-dark);
    box-sizing: border-box;
}

.w3s-search-area input[type="text"]:focus {
    outline: none;
    border-color: var(--main-color);
}

.w3s-search-area button {
    padding: 0 12px;
    height: 36px;
    background-color: var(--light-grey-bg);
    border: 1px solid var(--border-color);
    border-left: none;
    cursor: pointer;
    border-radius: 0 25px 25px 0;
    transition: background-color 0.2s;
    font-size: 16px;
    color: var(--text-muted);
}

/* === ÁREA DE AÇÕES DO HEADER === */
.w3s-header-right-group {
    display: flex;
    align-items: center;
    margin-left: auto;
    gap: 5px;
    padding-right: 10px;
}

.w3s-header-actions {
    display: flex;
    align-items: center;
    gap: 5px;
    flex-shrink: 0;
}

.w3s-header-actions a,
.w3s-header-actions button {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 6px 10px;
    border-radius: 4px;
    background: none;
    border: none;
    cursor: pointer;
    white-space: nowrap;
}

.w3s-header-actions .header-btn {
    background-color: var(--light-grey-bg);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.w3s-header-actions .header-btn:hover {
    background-color: var(--border-color);
    transform: translateY(-1px);
}

.w3s-header-actions .header-btn.primary {
    background-color: var(--main-color);
    color: var(--text-light);
    border-color: var(--main-color);
}

.w3s-header-actions .header-btn.primary:hover {
    background-color: var(--accent-1);
    border-color: var(--accent-1);
}

/* === SIDEBAR HEADER === */
.sidebar-header {
    padding: 1.5rem 1rem;
    border-bottom: 1px solid var(--sidebar-border);
    background: var(--gradient-primary);
    color: white;
    position: relative;
}

.sidebar-title {
    font-size: 1.125rem;
    font-weight: 600;
    opacity: 0.8;
    transition: opacity var(--animation-speed) ease;
}

.collapsed .sidebar-title {
    opacity: 0;
}

.sidebar-icon-expanded,
.sidebar-icon-collapsed {
    position: absolute;
    top: 50%;
    font-size: 1.5rem;
    opacity: 1;
    transition: all var(--animation-speed) ease;
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-icon-expanded {
    right: 15px;
    transform: translateY(-50%);
}

.sidebar-icon-expanded:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-50%) scale(1.1);
}

.sidebar-icon-collapsed {
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
}

.sidebar-icon-collapsed:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%) scale(1.1);
}

.collapsed .sidebar-icon-expanded {
    opacity: 0;
}

.collapsed .sidebar-icon-collapsed {
    opacity: 1;
}

/* === CONTEÚDO DA SIDEBAR === */
.sidebar-content {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 1rem 0;
    height: 0;
}

.sidebar-nav::-webkit-scrollbar {
    width: 4px;
}

.sidebar-nav::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 2px;
}

/* === MENU DE NAVEGAÇÃO === */
.course-item {
    margin-bottom: 0.5rem;
}

.course-header {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    cursor: pointer;
    color: var(--text-dark);
    font-weight: 500;
    transition: all var(--animation-speed) ease;
    position: relative;
}

.course-header:hover {
    background: var(--light-highlight-bg);
}

.course-header.active {
    background: var(--main-color);
    color: white;
}

.course-icon {
    width: 1.5rem;
    height: 1.5rem;
    margin-right: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-2);
    border-radius: 0.375rem;
    color: white;
    font-weight: 600;
    font-size: 0.75rem;
    flex-shrink: 0;
}

.course-name {
    flex: 1;
    opacity: 1;
    transition: opacity var(--animation-speed) ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 1.15em;
}

.collapsed .course-name {
    opacity: 0;
    width: 0;
}

.toggle-icon {
    margin-left: auto;
    font-size: 0.875rem;
    transition: transform var(--animation-speed) ease;
    opacity: 1;
}

.collapsed .toggle-icon {
    opacity: 0;
}

.toggle-icon.expanded {
    transform: rotate(90deg);
}

/* === MÓDULOS E AULAS === */
.module-list {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--animation-speed) ease;
    background: rgba(0, 0, 0, 0.02);
}

.module-list.visible {
    max-height: 800px;
    overflow-y: auto;
}

.module-item {
    padding: 0.5rem 1rem 0.5rem 3rem;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.875rem;
    transition: all var(--animation-speed) ease;
    position: relative;
    opacity: 1;
}

.collapsed .module-item {
    opacity: 0;
}

.module-item:hover {
    background: var(--light-highlight-bg);
    color: var(--text-dark);
}

.module-item.active {
    background: var(--accent-1);
    color: white;
    font-weight: 500;
}

.module-item::before {
    content: '•';
    position: absolute;
    left: 2rem;
    color: var(--accent-2);
}

.module-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    font-size: 1.3em;
}

.module-name {
    flex: 1;
    font-weight: 500;
}

.module-meta {
    font-size: 0.8em;
    color: var(--text-muted);
    margin-right: 0.5rem;
}

.module-toggle {
    font-size: 0.8em;
    transition: transform var(--animation-speed) ease;
}

.module-toggle.expanded {
    transform: rotate(90deg);
}

.aulas-list {
    margin-top: 0.5rem;
    padding-left: 1rem;
    border-left: 2px solid var(--border-color);
    font-size: 1.3em;
}

.aula-item {
    padding: 0.4rem 0.8rem;
    margin-bottom: 0.25rem;
    cursor: pointer;
    border-radius: 0.25rem;
    transition: all var(--animation-speed) ease;
    background: rgba(0, 0, 0, 0.02);
    font-size: 0.85em;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.aula-item:hover {
    background: var(--light-highlight-bg);
    transform: translateX(2px);
}

.aula-item.active {
    background: var(--accent-1);
    color: white;
}

.aula-meta {
    font-size: 0.75em;
    color: var(--text-muted);
    opacity: 0.8;
}

.aula-item.active .aula-meta {
    color: rgba(255, 255, 255, 0.8);
}

/* === CONTEÚDO PRINCIPAL === */
.study-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: all var(--animation-speed) ease;
    position: relative;
}

/* === ESTADOS DE CARREGAMENTO === */
.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
}

.loading-spinner {
    width: 3rem;
    height: 3rem;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--main-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

/* === NOTIFICAÇÕES === */
.notification {
    position: fixed;
    top: 1rem;
    right: 1rem;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    color: white;
    font-weight: 500;
    z-index: 10000;
    transform: translateX(100%);
    transition: transform var(--animation-speed) ease;
    max-width: 400px;
}

.notification.show {
    transform: translateX(0);
}

.notification.success { background: var(--success-color); }
.notification.error { background: var(--error-color); }
.notification.warning { background: var(--warning-color); }
.notification.info { background: var(--info-color); }

/* === RESPONSIVIDADE === */
@media (max-width: 992px) {
    .w3s-header-actions .link-text {
        display: none;
    }
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 280px;
        --sidebar-collapsed-width: 0;
    }

    .study-sidebar {
        position: fixed;
        left: 0;
        top: var(--header-height);
        height: calc(100vh - var(--header-height));
        z-index: 1001;
        transform: translateX(-100%);
    }

    .study-sidebar.visible {
        transform: translateX(0);
    }

    .study-sidebar.collapsed {
        transform: translateX(-100%);
    }

    .study-content {
        width: 100%;
    }

    .content-body {
        padding: 1rem;
    }

    .w3s-nav-menu {
        margin-left: 5px;
        gap: 2px;
    }

    .nav-button {
        padding: 0 8px;
        font-size: 13px;
    }

    .dropdown-menu {
        position: fixed;
        top: var(--header-height);
        left: 50%;
        transform: translateX(-50%);
        width: calc(100vw - 20px);
        max-width: 300px;
        border-radius: 8px;
        max-height: 60vh;
    }

    .dropdown-item {
        padding: 14px 16px;
        font-size: 16px;
    }

    .dropdown-icon {
        font-size: 18px;
        width: 24px;
    }
}

@media (max-width: 480px) {
    .w3s-nav-menu {
        display: none;
    }

    .pomodoro-timer-panel {
        width: calc(100vw - 20px);
        right: 10px;
        left: 10px;
        padding: 16px;
    }

    .pomodoro-timer-header h3 {
        font-size: 1.1em;
    }

    .pomodoro-timer-btn {
        padding: 10px 12px;
        font-size: 0.9em;
    }
}

/* === OVERLAY MOBILE === */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--animation-speed) ease;
}

.sidebar-overlay.visible {
    opacity: 1;
    visibility: visible;
}

/* === CONTEÚDO DA AULA === */
.lesson-content {
    line-height: 1.7;
    max-width: none;
    width: 100%;
    box-sizing: border-box;
}

.lesson-content h1, .lesson-content h2, .lesson-content h3 {
    color: var(--main-color);
    margin: 1.5rem 0 1rem;
}

.lesson-content h1 { font-size: 2rem; }
.lesson-content h2 { font-size: 1.5rem; }
.lesson-content h3 { font-size: 1.25rem; }

.lesson-content p {
    margin-bottom: 1rem;
}

.lesson-content ul, .lesson-content ol {
    margin: 1rem 0;
    padding-left: 2rem;
}

.lesson-content blockquote {
    border-left: 4px solid var(--accent-1);
    padding-left: 1rem;
    margin: 1rem 0;
    font-style: italic;
    color: var(--text-muted);
}

.lesson-content code {
    background: var(--light-highlight-bg);
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-family: 'Fira Code', monospace;
}

.lesson-content pre {
    background: var(--light-highlight-bg);
    padding: 1rem;
    border-radius: 0.5rem;
    overflow-x: auto;
    margin: 1rem 0;
}

/* === CONTEÚDO PRINCIPAL - BODY === */
.content-body {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
    background: var(--main-content-bg);
    position: relative;
    width: 100%;
    box-sizing: border-box;
    contain: layout style;
    isolation: isolate;
    z-index: 1;
}

.content-body::-webkit-scrollbar {
    width: 8px;
}

.content-body::-webkit-scrollbar-track {
    background: var(--light-highlight-bg);
}

.content-body::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.content-body::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* === PROTEÇÃO CONTRA INTERFERÊNCIA DE CONTEÚDO EXTERNO === */
.lesson-content * {
    position: static !important;
    float: none !important;
    clear: none !important;
    transform: none !important;
    top: auto !important;
    left: auto !important;
    right: auto !important;
    bottom: auto !important;
    z-index: auto !important;
    height: auto !important;
    max-height: none !important;
    min-height: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
    box-sizing: border-box !important;
}

.lesson-content span,
.lesson-content em,
.lesson-content strong,
.lesson-content a,
.lesson-content code {
    width: auto !important;
    margin-left: auto !important;
    margin-right: auto !important;
}

/* === BOTÃO DINÂMICO DE QUESTÕES === */
#dynamic-questoes-btn {
    position: fixed !important;
    top: 50% !important;
    right: 2rem !important;
    transform: translateY(-50%) !important;
    z-index: 9999 !important;
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%) !important;
    color: white !important;
    border: none !important;
    border-radius: 50% !important;
    width: 70px !important;
    height: 70px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    cursor: pointer !important;
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.4), 0 4px 12px rgba(0, 0, 0, 0.15) !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    opacity: 0 !important;
    visibility: hidden !important;
    backdrop-filter: blur(10px) !important;
    border: 2px solid rgba(255, 255, 255, 0.2) !important;
    pointer-events: none !important;
    animation: pulse-glow 2s ease-in-out infinite alternate !important;
}

#dynamic-questoes-btn.visible {
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
    animation: pulse-glow 2s ease-in-out infinite alternate, bounce-in 0.6s ease-out !important;
}

@keyframes bounce-in {
    0% {
        transform: translateY(-50%) scale(0.3);
        opacity: 0;
    }
    50% {
        transform: translateY(-50%) scale(1.1);
    }
    100% {
        transform: translateY(-50%) scale(1);
        opacity: 1;
    }
}

#dynamic-questoes-btn:hover {
    transform: translateY(-50%) scale(1.15) !important;
    box-shadow: 0 12px 35px rgba(255, 107, 53, 0.6), 0 8px 20px rgba(0, 0, 0, 0.2) !important;
    background: linear-gradient(135deg, #ff5722 0%, #ff9800 100%) !important;
    border-color: rgba(255, 255, 255, 0.4) !important;
    animation: none !important;
}

#dynamic-questoes-btn:active {
    transform: translateY(-50%) scale(0.95) !important;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.5) !important;
}

@keyframes pulse-glow {
    0% {
        box-shadow: 0 8px 25px rgba(255, 107, 53, 0.4), 0 4px 12px rgba(0, 0, 0, 0.15);
    }
    100% {
        box-shadow: 0 12px 35px rgba(255, 107, 53, 0.6), 0 6px 18px rgba(0, 0, 0, 0.2);
    }
}

#dynamic-questoes-btn svg {
    width: 28px !important;
    height: 28px !important;
    fill: none !important;
    stroke: currentColor !important;
    stroke-width: 2.5 !important;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3)) !important;
}

.study-sidebar.collapsed ~ .study-content #dynamic-questoes-btn {
    right: 2rem !important;
}

@media (max-width: 768px) {
    #dynamic-questoes-btn {
        right: 1rem !important;
        bottom: 2rem !important;
        top: auto !important;
        transform: translateY(0) !important;
        width: 60px !important;
        height: 60px !important;
    }

    #dynamic-questoes-btn:hover {
        transform: scale(1.15) !important;
    }

    #dynamic-questoes-btn:active {
        transform: scale(0.95) !important;
    }

    #dynamic-questoes-btn svg {
        width: 24px !important;
        height: 24px !important;
    }

    #dynamic-questoes-btn.visible {
        animation: pulse-glow 2s ease-in-out infinite alternate, bounce-in-mobile 0.6s ease-out !important;
    }

    @keyframes bounce-in-mobile {
        0% {
            transform: scale(0.3);
            opacity: 0;
        }
        50% {
            transform: scale(1.1);
        }
        100% {
            transform: scale(1);
            opacity: 1;
        }
    }
}

/* === ESTILOS PARA TABELAS TRADICIONAIS === */
.table-container {
    width: 100%;
    overflow-x: auto;
    margin: 20px 0;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    background: white;
}

table {
    border-collapse: collapse;
    width: 100%;
    min-width: 600px;
    margin: 0;
    background: white;
    font-size: 14px;
    table-layout: fixed;
}

th, td {
    border: 1px solid #e0e0e0;
    padding: 12px 16px;
    text-align: left;
    vertical-align: top;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
    line-height: 1.5;
}

th {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    color: #495057;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 0.5px;
    position: sticky;
    top: 0;
    z-index: 10;
    white-space: nowrap;
}

table.comparative-table {
    border: 2px solid #2196f3;
}

table.comparative-table th:first-child {
    width: 20%;
    min-width: 120px;
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
}

table.comparative-table th:nth-child(2) {
    width: 25%;
    min-width: 150px;
    background: linear-gradient(135deg, #f3e5f5 0%, #e1bee7 100%);
}

table.comparative-table th:nth-child(3) {
    width: 55%;
    min-width: 200px;
    background: linear-gradient(135deg, #e8f5e8 0%, #c8e6c9 100%);
}

table.basic-table th:first-child {
    width: 30%;
}

/* === POMODORO TIMER === */
.pomodoro-timer-panel {
    position: fixed;
    top: calc(var(--header-height) + 5px);
    right: 20px;
    width: 320px;
    max-width: calc(100vw - 40px);
    background-color: var(--main-content-bg);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
    z-index: 9999;
    padding: 20px;
    display: none;
    flex-direction: column;
    gap: 16px;
    color: var(--text-dark);
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

.pomodoro-timer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 12px;
    margin-bottom: 8px;
}

.pomodoro-timer-header h3 {
    margin: 0;
    font-size: 1.3em;
    color: var(--main-color);
    display: flex;
    align-items: center;
    font-weight: bold;
}

.pomodoro-timer-icon {
    margin-left: 8px;
    font-size: 1.1em;
}

.pomodoro-timer-close-btn {
    background: none;
    border: none;
    font-size: 2em;
    font-weight: bold;
    cursor: pointer;
    padding: 0 8px;
    line-height: 1;
    color: var(--text-muted);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pomodoro-timer-close-btn:hover {
    color: var(--text-dark);
    background-color: rgba(0,0,0,0.1);
}

.pomodoro-timer-display {
    text-align: center;
    padding: 16px 0;
}

#pomodoroTimerTime {
    font-size: 3.8em;
    font-weight: bold;
    color: var(--accent-1);
    display: block;
    margin: 12px 0;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.pomodoro-timer-controls {
    display: flex;
    justify-content: space-between;
    gap: 12px;
}

.pomodoro-timer-btn {
    padding: 12px 16px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 600;
    transition: all 0.2s ease;
    flex: 1;
    min-height: 44px;
}

.pomodoro-timer-start {
    background-color: var(--main-color);
    color: var(--text-light);
}

.pomodoro-timer-start:hover {
    background-color: var(--accent-1);
    transform: translateY(-1px);
}

.pomodoro-timer-pause {
    background-color: var(--accent-2);
    color: var(--text-light);
}

.pomodoro-timer-pause:hover {
    filter: brightness(0.9);
    transform: translateY(-1px);
}

.pomodoro-timer-reset {
    background-color: var(--light-highlight-bg);
    color: var(--text-dark);
    border: 2px solid var(--border-color);
}

.pomodoro-timer-reset:hover {
    background-color: var(--border-color);
    transform: translateY(-1px);
}

.pomodoro-timer-btn:active {
    transform: translateY(1px);
}

.pomodoro-timer-status {
    text-align: center;
    font-size: 1em;
    color: var(--text-muted);
    background-color: var(--light-highlight-bg);
    padding: 12px;
    border-radius: 8px;
}

.pomodoro-timer-status p {
    margin: 6px 0;
}

#pomodoroTimerSessionStatus {
    font-weight: bold;
    color: var(--text-dark);
    font-size: 1.1em;
}

/* === MERMAID STYLES === */
.mermaid-container {
    margin: 20px 0;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    background: var(--main-content-bg);
}

.mermaid-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.mermaid-header h4 {
    margin: 0;
    color: var(--main-color);
    font-size: 1.2em;
}

.mermaid-controls {
    display: flex;
    gap: 8px;
}

.mermaid-btn {
    padding: 6px 12px;
    background: var(--accent-2);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9em;
    text-decoration: none;
    display: inline-block;
    transition: background 0.2s;
}

.mermaid-btn:hover {
    background: var(--accent-1);
}

.mermaid-graph {
    background: var(--mermaid-bg);
    border-radius: 4px;
    padding: 12px;
    margin: 12px 0;
}

.mermaid-graph h4 {
    color: var(--main-color);
    margin: 0 0 12px 0;
}

.mermaid-graph pre {
    background: var(--light-highlight-bg);
    padding: 12px;
    border-radius: 4px;
    overflow-x: auto;
    margin: 8px 0;
}

.mermaid-graph p {
    margin: 8px 0;
    line-height: 1.6;
}

.mermaid-container {
    border: 3px solid #4b5563;
    border-radius: 8px;
    margin: 20px 0;
    background: var(--main-content-bg);
}

.mermaid-header {
    background: var(--gradient-primary);
    color: white;
    padding: 12px 16px;
    border-radius: 8px 8px 0 0;
}

.mermaid-header h4 {
    margin: 0;
    font-size: 1.1em;
    font-weight: 600;
}

.mermaid-controls {
    display: flex;
    gap: 8px;
}

.mermaid-graph-placeholder {
    padding: 20px;
    text-align: center;
    background: var(--light-grey-bg);
    border-radius: 0 0 8px 8px;
}

.mermaid-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.mermaid-loading p {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.9em;
}

.mermaid-source {
    background: var(--light-grey-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 12px;
    margin-top: 12px;
}

.mermaid-source pre {
    margin: 0;
    background: transparent;
    padding: 0;
    border: none;
    border-radius: 0;
    overflow-x: auto;
}

/* === MERMAID CENTRALIZATION STYLES === */
/* Regras de alta prioridade para centralização perfeita dos gráficos Mermaid */
.mermaid,
.mermaid-container .mermaid,
.mermaid-graph,
div.mermaid,
pre.mermaid,
code.mermaid {
    /* Layout e Centralização */
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    flex-direction: column !important;
    text-align: center !important;

    /* Dimensões */
    width: 100% !important;
    min-height: 250px !important;
    max-width: 100% !important;
    box-sizing: border-box !important;

    /* Espaçamento */
    margin: 25px 0 !important;
    padding: 20px !important;

    /* Aparência */
    background: #f8f9fa !important;
    border: 2px solid #e9ecef !important;
    border-radius: 12px !important;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08) !important;

    /* Fonte */
    font-family: 'Courier New', monospace, Arial, sans-serif !important;

    /* Posicionamento */
    position: relative !important;
    overflow: visible !important;
}

/* Centralização específica do SVG dentro do container */
.mermaid svg,
.mermaid-container .mermaid svg,
.mermaid-graph svg {
    display: block !important;
    margin: 0 auto !important;
    max-width: 100% !important;
    height: auto !important;
    transform: none !important;
    position: relative !important;
}

/* Container específico para gráficos Mermaid */
.mermaid-container,
.mermaid-graph {
    width: 100% !important;
    display: block !important;
    margin: 25px 0 !important;
}

/* Estilos específicos para diferentes tipos de gráficos Mermaid */
.mermaid.flowchart,
.mermaid.graph,
.mermaid.sequence,
.mermaid.gantt,
.mermaid.timeline {
    justify-content: center !important;
    align-items: center !important;
}

/* Responsividade para telas menores */
@media (max-width: 768px) {
    .mermaid,
    .mermaid-container .mermaid,
    .mermaid-graph {
        min-height: 200px !important;
        padding: 15px !important;
        margin: 20px 0 !important;
    }

    .mermaid svg,
    .mermaid-container .mermaid svg,
    .mermaid-graph svg {
        max-width: 100% !important;
        height: auto !important;
    }
}

/* === MERMAID SVG STYLES === */
.mermaid svg {
    max-width: 100%;
    height: auto;
}

.mermaid svg text {
    fill: var(--text-dark) !important;
    color: var(--text-dark) !important;
}

.mermaid svg .node rect,
.mermaid svg .node circle,
.mermaid svg .node ellipse,
.mermaid svg .node polygon {
    fill: var(--light-highlight-bg) !important;
    stroke: var(--main-color) !important;
}

.mermaid svg .edgePath path,
.mermaid svg path.path {
    stroke: var(--main-color) !important;
}

.mermaid svg .edgeLabel,
.mermaid svg .edgeLabel foreignObject,
.mermaid svg .edgeLabel foreignObject div,
.mermaid svg .label,
.mermaid svg .label div,
.mermaid svg .label span {
    color: var(--text-dark) !important;
}

.mermaid svg .actor {
    stroke: var(--accent-1) !important;
    fill: var(--accent-2) !important;
}

.mermaid svg .messageLine0,
.mermaid svg .messageLine1 {
    stroke: var(--accent-1) !important;
}

.mermaid svg .actor-box {
    fill: var(--accent-2) !important;
    stroke: var(--main-color) !important;
}

.mermaid svg .classBox {
    fill: var(--light-highlight-bg) !important;
    stroke: var(--main-color) !important;
}

/* === DARK MODE MERMAID === */
body.dark-mode .mermaid svg text,
.dark-mode .mermaid svg text,
body.dark .mermaid svg text,
[data-theme="dark"] .mermaid svg text {
    fill: var(--text-light) !important;
    color: var(--text-light) !important;
}

body.dark-mode .mermaid svg .node rect,
.dark-mode .mermaid svg .node rect,
body.dark .mermaid svg .node rect,
[data-theme="dark"] .mermaid svg .node rect,
body.dark-mode .mermaid svg .node circle,
.dark-mode .mermaid svg .node circle,
body.dark .mermaid svg .node circle,
[data-theme="dark"] .mermaid svg .node circle,
body.dark-mode .mermaid svg .node ellipse,
.dark-mode .mermaid svg .node ellipse,
body.dark .mermaid svg .node ellipse,
[data-theme="dark"] .mermaid svg .node ellipse,
body.dark-mode .mermaid svg .node polygon,
.dark-mode .mermaid svg .node polygon,
body.dark .mermaid svg .node polygon,
[data-theme="dark"] .mermaid svg .node polygon {
    fill: var(--dark-bg) !important;
    stroke: var(--accent-2) !important;
}

body.dark-mode .mermaid svg .edgePath path,
.dark-mode .mermaid svg .edgePath path,
body.dark .mermaid svg .edgePath path,
[data-theme="dark"] .mermaid svg .edgePath path,
body.dark-mode .mermaid svg path.path,
.dark-mode .mermaid svg path.path,
body.dark .mermaid svg path.path,
[data-theme="dark"] .mermaid svg path.path {
    stroke: var(--accent-2) !important;
}

/* === CONTROLE DE VISIBILIDADE === */
#showAllCoursesBtn,
#themeToggleBtn {
    pointer-events: auto !important;
    position: relative !important;
    z-index: 1000 !important;
}

#showAllCoursesBtn *,
#themeToggleBtn * {
    pointer-events: none !important;
}

/* === FIM DOS ESTILOS === */