@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #131a2e;
    --bg-glass: rgba(19, 26, 46, 0.65);
    --bg-glass-active: rgba(30, 41, 73, 0.8);
    --border-glass: rgba(255, 255, 255, 0.08);
    --border-glass-glow: rgba(59, 130, 246, 0.3);
    
    --accent-blue: #3b82f6;
    --accent-blue-glow: rgba(59, 130, 246, 0.15);
    --accent-gold: #f59e0b;
    --accent-gold-glow: rgba(245, 158, 11, 0.2);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --success: #10b981;
    --success-glow: rgba(16, 185, 129, 0.15);
    --error: #ef4444;
    --error-glow: rgba(239, 68, 68, 0.15);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    --font-sans: 'Outfit', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scrollbar-width: thin;
    scrollbar-color: var(--border-glass) transparent;
}

body {
    background-color: var(--bg-primary);
    background-image: 
        radial-gradient(at 10% 20%, rgba(59, 130, 246, 0.08) 0px, transparent 50%),
        radial-gradient(at 90% 80%, rgba(245, 158, 11, 0.04) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    display: flex;
    overflow-x: hidden;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--border-glass);
    border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Sidebar Layout */
.app-container {
    display: flex;
    width: 100%;
    min-height: 100vh;
}

.sidebar {
    width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-glass);
    display: flex;
    flex-direction: column;
    padding: 2rem 1.5rem;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: var(--transition-normal);
}

.brand-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
}

.brand-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-gold));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 800;
    font-size: 1.25rem;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.4);
}

.brand-name {
    display: flex;
    flex-direction: column;
}

.brand-title {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--text-primary);
}

.brand-subtitle {
    font-size: 0.75rem;
    color: var(--accent-gold);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex-grow: 1;
}

.nav-item a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.85rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-fast);
    border: 1px solid transparent;
}

.nav-item a:hover {
    color: var(--text-primary);
    background: var(--bg-glass);
    border-color: var(--border-glass);
}

.nav-item.active a {
    color: white;
    background: linear-gradient(135deg, var(--accent-blue), rgba(59, 130, 246, 0.4));
    border-color: var(--border-glass-glow);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.15);
}

.nav-item svg {
    width: 20px;
    height: 20px;
    stroke-width: 2;
}

.sidebar-footer {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-glass);
}

.btn-reset-db {
    width: 100%;
    background: transparent;
    border: 1px dashed var(--error);
    color: var(--error);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
}

.btn-reset-db:hover {
    background: var(--error-glow);
    box-shadow: 0 4px 12px var(--error-glow);
}

/* Main Content Area */
.main-content {
    flex-grow: 1;
    margin-left: 280px;
    padding: 2.5rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    max-width: 1200px;
    width: calc(100% - 280px);
}

/* Header Area */
.content-header {
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-info h1 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.25rem;
    background: linear-gradient(135deg, white, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-info p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Cards & Glassmorphism */
.glass-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.glass-card:hover {
    border-color: var(--border-glass-glow);
    box-shadow: var(--shadow-lg);
}

/* Dashboard Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    position: relative;
    overflow: hidden;
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 60px;
    height: 60px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
    border-radius: 50%;
}

.stat-icon-box {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon-box.blue {
    background: var(--accent-blue-glow);
    color: var(--accent-blue);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.stat-icon-box.gold {
    background: var(--accent-gold-glow);
    color: var(--accent-gold);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.stat-icon-box.green {
    background: var(--success-glow);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.stat-icon-box.red {
    background: var(--error-glow);
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    color: white;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Subject Progress Grid */
.section-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
}

.section-title svg {
    color: var(--accent-blue);
}

.subjects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.subject-card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    cursor: pointer;
}

.subject-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.subject-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: white;
}

.subject-badge {
    padding: 0.25rem 0.6rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: 50px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.subject-stats-summary {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.progress-bar-container {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50px;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border-glass);
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-blue), #60a5fa);
    border-radius: 50px;
    width: 0%;
    transition: width var(--transition-slow);
}

.progress-bar-fill.success {
    background: linear-gradient(90deg, var(--success), #34d399);
}

.subject-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    border-top: 1px solid var(--border-glass);
    padding-top: 0.75rem;
    margin-top: 0.25rem;
}

.accuracy-pill {
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-weight: 600;
}

.accuracy-pill.high {
    background: var(--success-glow);
    color: var(--success);
}

.accuracy-pill.low {
    background: var(--error-glow);
    color: var(--error);
}

.accuracy-pill.medium {
    background: var(--accent-gold-glow);
    color: var(--accent-gold);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), #2563eb);
    color: white;
    box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.45);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-glass-active);
    border-color: var(--border-glass);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-secondary);
}

.btn-outline {
    background: transparent;
    border-color: var(--border-glass);
    color: var(--text-secondary);
}

.btn-outline:hover {
    color: white;
    border-color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.02);
}

/* Quiz Interface Layout */
.quiz-wrapper {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 1rem;
}

.quiz-header-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.02);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-glass);
}

.question-card {
    animation: fadeIn var(--transition-normal);
}

.subject-tag {
    display: inline-block;
    padding: 0.35rem 0.75rem;
    border-radius: 50px;
    background: var(--accent-blue-glow);
    color: var(--accent-blue);
    font-weight: 600;
    font-size: 0.8rem;
    border: 1px solid rgba(59, 130, 246, 0.2);
    margin-bottom: 1.25rem;
}

.question-text {
    font-size: 1.25rem;
    line-height: 1.6;
    color: white;
    margin-bottom: 2rem;
    font-weight: 500;
    white-space: pre-line;
}

/* Options Styles */
.options-list {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    margin-bottom: 2rem;
}

.option-btn {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.1rem 1.25rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 1rem;
    text-align: left;
    transition: var(--transition-fast);
    width: 100%;
}

.option-btn:hover:not([disabled]) {
    background: var(--bg-glass-active);
    border-color: var(--accent-blue);
    color: white;
    transform: translateX(3px);
}

.option-btn.selected {
    background: var(--accent-blue-glow);
    border-color: var(--accent-blue);
    color: white;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.15);
}

.option-btn.correct {
    background: var(--success-glow);
    border-color: var(--success);
    color: white;
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.15);
}

.option-btn.incorrect {
    background: var(--error-glow);
    border-color: var(--error);
    color: white;
    box-shadow: 0 0 15px rgba(239, 68, 68, 0.15);
}

.option-letter {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
    transition: var(--transition-fast);
}

.option-btn:hover .option-letter:not([disabled]) {
    border-color: var(--accent-blue);
    background: var(--accent-blue);
    color: white;
}

.option-btn.selected .option-letter {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: white;
}

.option-btn.correct .option-letter {
    background: var(--success);
    border-color: var(--success);
    color: white;
}

.option-btn.incorrect .option-letter {
    background: var(--error);
    border-color: var(--error);
    color: white;
}

/* Cebraspe Certo/Errado Specific */
.cebraspe-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.cebraspe-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.75rem;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    font-size: 1.25rem;
    font-weight: 700;
    cursor: pointer;
    font-family: var(--font-sans);
    transition: var(--transition-fast);
}

.cebraspe-btn svg {
    width: 32px;
    height: 32px;
    margin-bottom: 0.5rem;
    transition: var(--transition-fast);
}

.cebraspe-btn.certo-btn:hover:not([disabled]) {
    background: rgba(16, 185, 129, 0.05);
    border-color: var(--success);
    color: var(--success);
}

.cebraspe-btn.errado-btn:hover:not([disabled]) {
    background: rgba(239, 68, 68, 0.05);
    border-color: var(--error);
    color: var(--error);
}

.cebraspe-btn.certo-btn.selected {
    background: var(--success-glow);
    border-color: var(--success);
    color: var(--success);
}

.cebraspe-btn.errado-btn.selected {
    background: var(--error-glow);
    border-color: var(--error);
    color: var(--error);
}

/* Explanation Block */
.explanation-card {
    background: rgba(59, 130, 246, 0.04);
    border-left: 4px solid var(--accent-blue);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: 1.25rem 1.5rem;
    margin-top: 1.5rem;
    animation: slideDown var(--transition-normal);
}

.explanation-title {
    font-weight: 700;
    color: white;
    margin-bottom: 0.5rem;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.explanation-text {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Simulation View Components */
.simulado-setup {
    max-width: 600px;
    margin: 2rem auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-label {
    font-size: 0.95rem;
    font-weight: 600;
    color: white;
}

.form-select, .form-input {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    color: white;
    padding: 0.85rem 1rem;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition-fast);
    width: 100%;
}

.form-select option {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.form-select:focus, .form-input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 12px rgba(59, 130, 246, 0.2);
}

.subjects-checkbox-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 1rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem 0;
}

.checkbox-label input {
    accent-color: var(--accent-blue);
    width: 16px;
    height: 16px;
}

/* Simulado Run Panel */
.simulado-run-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2rem;
}

.simulado-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.timer-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    text-align: center;
}

.timer-digits {
    font-size: 2.25rem;
    font-weight: 800;
    color: white;
    font-variant-numeric: tabular-nums;
    margin-top: 0.5rem;
}

.timer-digits.warning {
    color: var(--error);
    animation: pulse 1s infinite alternate;
}

.questions-nav-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.5rem;
    max-height: 250px;
    overflow-y: auto;
    padding-right: 0.25rem;
}

.question-nav-btn {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-glass);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
}

.question-nav-btn:hover {
    border-color: var(--accent-blue);
    color: white;
}

.question-nav-btn.active {
    background: var(--bg-glass-active);
    border-color: var(--accent-blue);
    color: white;
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
}

.question-nav-btn.answered {
    background: var(--accent-blue-glow);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.question-nav-btn.blank {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--text-muted);
    color: var(--text-muted);
}

.simulado-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 2rem;
    gap: 1rem;
}

/* Simulado Results Page */
.results-header-card {
    text-align: center;
    padding: 2.5rem;
    margin-bottom: 2.5rem;
    position: relative;
    overflow: hidden;
}

.results-score-circle {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    border: 6px solid var(--accent-blue);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 1.5rem auto;
    background: rgba(59, 130, 246, 0.05);
}

.results-score-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: white;
}

.results-score-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.results-stats-row {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 1.5rem;
}

.results-stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.results-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.results-stat-value.correct { color: var(--success); }
.results-stat-value.incorrect { color: var(--error); }
.results-stat-value.blank { color: var(--text-muted); }

.results-stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.review-item {
    border-bottom: 1px solid var(--border-glass);
    padding: 1.5rem 0;
}

.review-item:last-child {
    border-bottom: none;
}

.review-status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

.status-badge.correct { background: var(--success-glow); color: var(--success); }
.status-badge.incorrect { background: var(--error-glow); color: var(--error); }
.status-badge.blank { background: rgba(255, 255, 255, 0.05); color: var(--text-muted); }

/* Table Styles for Question Management */
.table-responsive {
    overflow-x: auto;
    width: 100%;
    margin-top: 1.5rem;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.admin-table th {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 2px solid var(--border-glass);
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
}

.admin-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-glass);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.admin-table tr:hover {
    background: rgba(255, 255, 255, 0.01);
}

.statement-cell {
    max-width: 350px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

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

@keyframes pulse {
    from { opacity: 0.7; }
    to { opacity: 1; }
}

/* Responsive adjustments */
@media (max-width: 992px) {
    .sidebar {
        width: 80px;
        padding: 1.5rem 0.5rem;
        align-items: center;
    }
    
    .brand-name, .brand-subtitle, .sidebar-footer span, .btn-reset-db span {
        display: none;
    }
    
    .sidebar-footer {
        width: 100%;
        display: flex;
        justify-content: center;
    }
    
    .btn-reset-db {
        width: 42px;
        height: 42px;
        padding: 0;
        border-radius: 50%;
    }
    
    .nav-item a {
        justify-content: center;
        padding: 0.75rem;
    }
    
    .nav-item a span {
        display: none;
    }
    
    .main-content {
        margin-left: 80px;
        width: calc(100% - 80px);
        padding: 1.5rem;
    }
    
    .simulado-run-layout {
        grid-template-columns: 1fr;
    }
}

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

    .app-container {
        flex-direction: column; /* Faz com que o menu no topo e o conteúdo principal fiquem empilhados verticalmente no celular! */
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        border-right: none;
        border-bottom: 1px solid var(--border-glass);
        padding: 1rem;
    }
    
    .brand-section {
        margin-bottom: 1rem;
        justify-content: center;
    }
    
    .nav-menu {
        flex-direction: row;
        justify-content: space-around;
        gap: 0.25rem;
    }
    
    .nav-item a {
        flex-direction: column;
        gap: 0.35rem;
        padding: 0.5rem;
        font-size: 0.75rem;
        text-align: center;
    }
    
    .nav-item a span {
        display: block !important; /* Exibe o texto abreviado embaixo do ícone para facilitar navegação em celulares */
        font-size: 0.75rem;
    }
    
    .sidebar-footer {
        display: none;
    }
    
    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 1rem;
    }
    
    .cebraspe-options {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .subjects-checkbox-grid {
        grid-template-columns: 1fr;
    }

    /* Ajuste de filtros em Área de Estudos */
    .filter-bar {
        grid-template-columns: 1fr !important;
        gap: 1rem !important;
    }

    /* Grades de estatísticas e cartões em smartphones */
    .stats-grid {
        grid-template-columns: 1fr !important;
        gap: 1rem;
    }

    /* Tabela responsiva de gerenciamento */
    .table-container {
        overflow-x: auto;
    }
    
    /* Layout do simulado em execução na tela pequena */
    .simulado-run-layout {
        grid-template-columns: 1fr !important;
    }

    .questions-nav-grid {
        grid-template-columns: repeat(6, 1fr) !important;
    }
}