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

/* Acessibilidade */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Foco visível para acessibilidade */
*:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* Melhorar contraste para leitores de tela */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

:root {
    /* Cores primárias suaves */
    --primary-blue: #3B82F6;
    --primary-blue-light: #60A5FA;
    --primary-blue-lighter: #93C5FD;
    --primary-blue-soft: #EFF6FF;
    
    /* Cores de status suaves */
    --success-green: #10B981;
    --success-green-light: #34D399;
    --success-green-soft: #ECFDF5;
    
    --warning-amber: #F59E0B;
    --warning-amber-light: #FBBF24;
    --warning-amber-soft: #FFFBEB;
    
    --error-red: #EF4444;
    --error-red-light: #F87171;
    --error-red-soft: #FEF2F2;
    
    --accent-purple: #8B5CF6;
    --accent-purple-light: #A78BFA;
    --accent-purple-soft: #F3F4F6;
    
    /* Cores neutras melhoradas */
    --background: #FEFEFE;
    --background-secondary: #F8FAFC;
    --surface: #FFFFFF;
    --surface-elevated: #FFFFFF;
    --surface-hover: #F1F5F9;
    
    /* Tipografia com melhor contraste */
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-tertiary: #64748B;
    --text-muted: #94A3B8;
    
    /* Bordas e divisores suaves */
    --border: #E2E8F0;
    --border-light: #F1F5F9;
    --border-medium: #CBD5E1;
    --divider: #F1F5F9;
    
    /* Sombras suaves */
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-elevated: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-soft: 0 2px 8px rgba(0,0,0,0.04);
    
    /* Gradientes suaves */
    --gradient-primary: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
    --gradient-success: linear-gradient(135deg, var(--success-green), var(--success-green-light));
    --gradient-warning: linear-gradient(135deg, var(--warning-amber), var(--warning-amber-light));
    --gradient-error: linear-gradient(135deg, var(--error-red), var(--error-red-light));
    --gradient-accent: linear-gradient(135deg, var(--accent-purple), var(--accent-purple-light));
    
    /* Gradientes de fundo suaves */
    --gradient-background: linear-gradient(135deg, #FEFEFE 0%, #F8FAFC 100%);
    --gradient-surface: linear-gradient(135deg, #FFFFFF 0%, #FEFEFE 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gradient-background);
    color: var(--text-primary);
    line-height: 1.7;
    padding-bottom: 80px;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.app-header {
    background: var(--gradient-primary);
    color: white;
    padding: 1.5rem 1rem;
    text-align: center;
    box-shadow: var(--shadow-elevated);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    margin-bottom: 1rem;
}

.header-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.logo-img {
    height: 48px;
    width: auto;
    filter: brightness(0) invert(1);
    transition: all 0.3s ease;
}

.logo-img:hover {
    transform: scale(1.05);
    filter: brightness(0) invert(1) drop-shadow(0 2px 4px rgba(255,255,255,0.3));
}

.header-logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

/* Menu de navegação superior para desktop */
.top-nav {
    display: none;
    justify-content: center;
    gap: 2rem;
    margin-top: 1rem;
    padding: 1rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.top-nav .nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2rem;
}

.top-nav .nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: rgba(255, 255, 255, 0.8);
    transition: all 0.2s ease;
    border-radius: 8px;
    min-width: 80px;
}

.top-nav .nav-item:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.top-nav .nav-item.active {
    color: white;
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.top-nav .nav-item[aria-current="page"] {
    color: white;
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.top-nav .nav-item i {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.top-nav .nav-item span {
    font-size: 0.8rem;
    font-weight: 500;
}

.app-main {
    padding: 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

.section.active {
    display: block;
}

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

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.section-header h2 {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1976D2, #7B1FA2);
    transform: translateY(-2px);
    box-shadow: var(--shadow-elevated);
}

.btn-secondary {
    background: var(--gradient-success);
    color: white;
    border: none;
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #388E3C, #2E7D32);
    transform: translateY(-2px);
    box-shadow: var(--shadow-elevated);
}

.btn-danger {
    background: var(--gradient-error);
    color: white;
    border: none;
}

.btn-danger:hover {
    background: linear-gradient(135deg, #D32F2F, #C62828);
    transform: translateY(-2px);
    box-shadow: var(--shadow-elevated);
}

.btn-warning {
    background: var(--gradient-warning);
    color: var(--text-primary);
    border: none;
}

.btn-warning:hover {
    background: linear-gradient(135deg, #F57C00, #EF6C00);
    transform: translateY(-2px);
    box-shadow: var(--shadow-elevated);
}

.dashboard {
    background: var(--gradient-surface);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-light);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--gradient-surface);
    color: var(--text-primary);
    padding: 1.5rem;
    border-radius: 16px;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-light);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255,255,255,0.1) 0%, transparent 100%);
    pointer-events: none;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(33, 150, 243, 0.3);
}

.stat-card i {
    font-size: 2rem;
    color: var(--primary-blue);
    opacity: 0.9;
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
    color: var(--primary-blue);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.recent-activity {
    background: var(--surface);
    border-radius: 8px;
    padding: 1rem;
    border: 1px solid var(--border);
}

.recent-activity h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.activity-item {
    padding: 0.75rem;
    background: var(--background);
    border-radius: 6px;
    border-left: 3px solid var(--primary-blue);
    font-size: 0.9rem;
}

.filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.filters select,
.filters input {
    padding: 0.875rem;
    border: 1px solid var(--border-medium);
    border-radius: 8px;
    font-size: 0.9rem;
    background: var(--surface);
    color: var(--text-primary);
    min-width: 200px;
    transition: all 0.2s ease;
}

.filters select:focus,
.filters input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px var(--primary-blue-soft);
    background: var(--surface-elevated);
}

.sources-grid,
.projects-grid,
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.source-card,
.project-card,
.team-card {
    background: var(--gradient-surface);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.source-card::before,
.project-card::before,
.team-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.source-card:hover,
.project-card:hover,
.team-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-elevated);
    border-color: var(--primary-blue-light);
    background: var(--surface-elevated);
}

.source-card:hover::before,
.project-card:hover::before,
.team-card:hover::before {
    transform: scaleX(1);
}

.source-card h3,
.project-card h3,
.team-card h3 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.source-meta,
.project-meta,
.team-meta {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--text-tertiary);
    font-weight: 400;
}

.source-actions,
.project-actions,
.team-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.citation-format-selector {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.citation-format-selector label {
    font-weight: 500;
}

.citation-format-selector select {
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--surface);
}

.citations-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.citation-item {
    background: var(--surface);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary-blue);
}

.citation-text {
    font-family: 'Times New Roman', serif;
    line-height: 1.8;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.citation-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.synthesis-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.patterns-section,
.insights-section {
    background: var(--surface);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.patterns-section h3,
.insights-section h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.patterns-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.pattern-card {
    background: var(--background);
    border-radius: 6px;
    padding: 1rem;
    border-left: 4px solid var(--success-green);
}

.pattern-card h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.pattern-value {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--success-green);
}

.insights-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.insight-item {
    background: var(--background);
    border-radius: 6px;
    padding: 1rem;
    border-left: 4px solid var(--warning-amber);
}

.collaboration-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    background: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
    font-weight: 500;
}

.tab-btn.active {
    color: var(--primary-blue);
    border-bottom-color: var(--primary-blue);
}

.tab-btn:hover {
    color: var(--primary-blue);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.tasks-header,
.team-header {
    margin-bottom: 1.5rem;
}

.tasks-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.task-item {
    background: var(--surface);
    border-radius: 8px;
    padding: 1rem;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--warning-amber);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.task-info h4 {
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.task-meta {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.task-actions {
    display: flex;
    gap: 0.5rem;
}

.writing-tools {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.tool-card {
    background: var(--gradient-surface);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-light);
}

.tool-card h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.article-structure {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.structure-item {
    background: var(--background);
    border-radius: 6px;
    padding: 1rem;
    border-left: 4px solid var(--primary-blue);
}

.structure-item h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.writing-tips {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.tip-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--background);
    border-radius: 6px;
}

.tip-item i {
    color: var(--warning-amber);
    font-size: 1.2rem;
}

#wordCountText {
    width: 100%;
    min-height: 150px;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.9rem;
    resize: vertical;
    margin-bottom: 1rem;
}

#wordCountText:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 2px rgba(33, 150, 243, 0.2);
}

.word-count-stats {
    display: flex;
    gap: 2rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Templates de Texto */
.template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.template-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--gradient-surface);
    border: 1px solid var(--border-medium);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    color: var(--text-primary);
    box-shadow: var(--shadow-soft);
}

.template-btn:hover {
    border-color: var(--primary-blue);
    background: var(--primary-blue-soft);
    transform: translateY(-2px);
    box-shadow: var(--shadow-elevated);
}

.template-btn i {
    font-size: 1.5rem;
    color: var(--primary-blue);
}

.template-btn span {
    font-weight: 500;
    font-size: 0.9rem;
    text-align: center;
}

.template-content {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: var(--background);
    border-radius: 12px;
    border: 1px solid var(--border);
}

.template-content h4 {
    margin-bottom: 1rem;
    color: var(--primary-blue);
}

.template-content textarea {
    width: 100%;
    min-height: 200px;
    margin-bottom: 1rem;
    padding: 1rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    line-height: 1.5;
    resize: vertical;
}

.template-content textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.template-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* Dicas de Escrita Aprimoradas */
.tip-category {
    margin-bottom: 2rem;
}

.tip-category h4 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-size: 1.1rem;
    border-bottom: 2px solid var(--border);
    padding-bottom: 0.5rem;
}

/* Análise de Texto Aprimorada */
.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--gradient-surface);
    border-radius: 8px;
    margin-bottom: 0.5rem;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-soft);
}

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

.text-analysis {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: var(--background);
    border-radius: 12px;
    border: 1px solid var(--border);
}

.text-analysis h4 {
    margin-bottom: 1rem;
    color: var(--primary-blue);
}

.analysis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.analysis-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--gradient-surface);
    border-radius: 8px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-soft);
}

.analysis-item span {
    font-weight: 500;
    color: var(--text-secondary);
}

.analysis-item strong {
    color: var(--primary-blue);
    font-size: 1.1rem;
}

/* Frases de Transição */
.transition-phrases {
    display: grid;
    gap: 2rem;
}

.phrase-category h4 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-size: 1.1rem;
    border-bottom: 2px solid var(--border);
    padding-bottom: 0.5rem;
}

.phrase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.75rem;
}

.phrase-tag {
    display: inline-block;
    padding: 0.5rem 0.75rem;
    background: var(--gradient-surface);
    border: 1px solid var(--border-medium);
    border-radius: 20px;
    font-size: 0.9rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-primary);
    box-shadow: var(--shadow-soft);
}

.phrase-tag:hover {
    background: var(--primary-blue);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

/* Checklist de Revisão */
.checklist {
    display: grid;
    gap: 2rem;
}

.checklist-category h4 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-size: 1.1rem;
    border-bottom: 2px solid var(--border);
    padding-bottom: 0.5rem;
}

.checklist-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--gradient-surface);
    border-radius: 8px;
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-soft);
}

.checklist-item:hover {
    border-color: var(--primary-blue);
    background: var(--primary-blue-soft);
    transform: translateY(-1px);
    box-shadow: var(--shadow-elevated);
}

.checklist-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-blue);
}

.checklist-item span {
    font-weight: 500;
    color: var(--text-primary);
}

.checklist-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

/* Responsividade para escrita */
@media (max-width: 768px) {
    /* Templates */
    .template-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }
    
    .template-btn {
        padding: 0.75rem 0.5rem;
        gap: 0.25rem;
    }
    
    .template-btn i {
        font-size: 1.25rem;
    }
    
    .template-btn span {
        font-size: 0.8rem;
    }
    
    .template-content {
        padding: 1rem;
        margin-top: 1rem;
    }
    
    .template-content textarea {
        min-height: 150px;
        padding: 0.75rem;
        font-size: 0.9rem;
    }
    
    .template-actions {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .template-actions .btn {
        width: 100%;
        padding: 0.75rem;
        font-size: 0.9rem;
    }
    
    /* Estrutura do artigo */
    .article-structure {
        gap: 1rem;
    }
    
    .structure-item {
        padding: 1rem 0.75rem;
    }
    
    .structure-item h4 {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }
    
    .structure-item p {
        font-size: 0.9rem;
        line-height: 1.4;
    }
    
    /* Dicas de escrita */
    .tip-category {
        margin-bottom: 1.5rem;
    }
    
    .tip-category h4 {
        font-size: 1rem;
        margin-bottom: 0.75rem;
    }
    
    .writing-tips .tip-item {
        padding: 0.5rem;
        margin-bottom: 0.5rem;
        gap: 0.5rem;
    }
    
    .writing-tips .tip-item i {
        font-size: 1rem;
        flex-shrink: 0;
    }
    
    .writing-tips .tip-item p {
        font-size: 0.9rem;
        line-height: 1.3;
    }
    
    /* Análise de texto */
    .stat-item {
        padding: 0.5rem;
        margin-bottom: 0.5rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .stat-label {
        font-size: 0.9rem;
    }
    
    .stat-item strong {
        font-size: 1.1rem;
    }
    
    .text-analysis {
        padding: 1rem;
        margin-top: 1rem;
    }
    
    .text-analysis h4 {
        font-size: 1rem;
        margin-bottom: 0.75rem;
    }
    
    .analysis-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .analysis-item {
        padding: 0.5rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .analysis-item span {
        font-size: 0.9rem;
    }
    
    .analysis-item strong {
        font-size: 1rem;
    }
    
    /* Frases de transição */
    .phrase-category h4 {
        font-size: 1rem;
        margin-bottom: 0.75rem;
    }
    
    .phrase-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    
    .phrase-tag {
        padding: 0.4rem 0.6rem;
        font-size: 0.85rem;
        border-radius: 15px;
    }
    
    /* Checklist */
    .checklist-category h4 {
        font-size: 1rem;
        margin-bottom: 0.75rem;
    }
    
    .checklist-item {
        padding: 0.5rem;
        margin-bottom: 0.5rem;
        gap: 0.5rem;
    }
    
    .checklist-item input[type="checkbox"] {
        width: 16px;
        height: 16px;
    }
    
    .checklist-item span {
        font-size: 0.9rem;
        line-height: 1.3;
    }
    
    .checklist-actions {
        flex-direction: column;
        gap: 0.75rem;
        margin-top: 1.5rem;
        padding-top: 1rem;
    }
    
    .checklist-actions .btn {
        width: 100%;
        padding: 0.75rem;
        font-size: 0.9rem;
    }
    
    /* Contador de palavras */
    #wordCountText {
        min-height: 120px;
        padding: 0.75rem;
        font-size: 0.9rem;
    }
    
    .word-count-stats {
        flex-direction: column;
        gap: 0.5rem;
        font-size: 0.85rem;
    }
    
    .word-count-stats > div {
        display: flex;
        justify-content: space-between;
        width: 100%;
        padding: 0.5rem;
        background: var(--background);
        border-radius: 6px;
    }
    
    /* Tool cards */
    .tool-card {
        padding: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .tool-card h3 {
        font-size: 1.1rem;
        margin-bottom: 1rem;
    }
    
    /* Section header */
    .section-header {
        margin-bottom: 1.5rem;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
        margin-bottom: 0.5rem;
    }
    
    .section-header p {
        font-size: 0.9rem;
        line-height: 1.4;
    }
    
    /* Writing tools container */
    .writing-tools {
        gap: 1.5rem;
    }
}

/* Responsividade para telas muito pequenas */
@media (max-width: 480px) {
    .template-grid {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .template-btn {
        padding: 0.75rem;
        flex-direction: row;
        gap: 0.75rem;
        text-align: left;
    }
    
    .template-btn i {
        font-size: 1.5rem;
    }
    
    .template-btn span {
        font-size: 0.9rem;
        flex: 1;
    }
    
    .phrase-grid {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .phrase-tag {
        padding: 0.5rem;
        font-size: 0.9rem;
        text-align: center;
    }
    
    .structure-item {
        padding: 0.75rem 0.5rem;
    }
    
    .structure-item h4 {
        font-size: 0.95rem;
    }
    
    .structure-item p {
        font-size: 0.85rem;
    }
    
    .writing-tips .tip-item {
        padding: 0.5rem 0.75rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .writing-tips .tip-item i {
        align-self: flex-start;
    }
    
    .checklist-item {
        padding: 0.5rem 0.75rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .checklist-item input[type="checkbox"] {
        align-self: flex-start;
    }
    
    .analysis-item {
        padding: 0.75rem;
    }
    
    .stat-item {
        padding: 0.75rem;
    }
    
    /* Tool cards para telas muito pequenas */
    .tool-card {
        padding: 0.75rem;
        margin-bottom: 1rem;
    }
    
    .tool-card h3 {
        font-size: 1rem;
        margin-bottom: 0.75rem;
    }
    
    /* Section header para telas muito pequenas */
    .section-header {
        margin-bottom: 1rem;
    }
    
    .section-header h2 {
        font-size: 1.3rem;
        margin-bottom: 0.25rem;
    }
    
    .section-header p {
        font-size: 0.85rem;
        line-height: 1.3;
    }
    
    /* Writing tools container para telas muito pequenas */
    .writing-tools {
        gap: 1rem;
    }
    
    /* Transições mais suaves */
    .phrase-tag:active {
        transform: scale(0.98);
    }
    
    .template-btn:active {
        transform: scale(0.98);
    }
    
    .checklist-item:active {
        transform: scale(0.98);
    }
}

/* Responsividade para landscape em mobile */
@media (max-width: 768px) and (orientation: landscape) {
    .template-content textarea {
        min-height: 100px;
    }
    
    .text-analysis {
        padding: 0.75rem;
    }
    
    .template-content {
        padding: 0.75rem;
    }
    
    .checklist {
        gap: 1rem;
    }
    
    .tip-category {
        margin-bottom: 1rem;
    }
}


.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
    padding: 0;
    margin: 0;
    overflow-y: auto;
}

.modal-content {
    background-color: var(--surface);
    margin: 30px auto 0 auto;
    padding: 1.5rem;
    border-radius: 16px;
    width: 90%;
    max-width: 600px;
    max-height: calc(100vh - 200px);
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-elevated);
    border: 1px solid var(--border);
    animation: modalSlideIn 0.3s ease;
}

/* Garantir que o modal fique abaixo do header */
.modal-content::before {
    content: '';
    position: absolute;
    top: -80px;
    left: 0;
    right: 0;
    height: 80px;
    background: transparent;
}

/* Estilos para scroll interno do modal */
.modal-content {
    scrollbar-width: thin;
    scrollbar-color: var(--primary-blue) var(--border);
}

.modal-content::-webkit-scrollbar {
    width: 6px;
}

.modal-content::-webkit-scrollbar-track {
    background: var(--border);
    border-radius: 3px;
}

.modal-content::-webkit-scrollbar-thumb {
    background: var(--primary-blue);
    border-radius: 3px;
}

.modal-content::-webkit-scrollbar-thumb:hover {
    background: #2980b9;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    color: var(--text-secondary);
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

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

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 1px solid var(--border-medium);
    border-radius: 8px;
    font-size: 0.9rem;
    font-family: inherit;
    transition: all 0.2s ease;
    background: var(--surface);
    color: var(--text-primary);
    font-weight: 400;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px var(--primary-blue-soft);
    transform: translateY(-1px);
    background: var(--surface-elevated);
}

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
    border-color: var(--primary-blue);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

.empty-state {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
    padding: 2rem;
    background: var(--background);
    border-radius: 8px;
    border: 2px dashed var(--border);
}

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--surface);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-around;
    padding: 0.5rem 0;
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1);
    z-index: 100;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.5rem;
    text-decoration: none;
    color: var(--text-secondary);
    transition: color 0.2s ease;
    min-width: 60px;
}

.nav-item.active {
    color: var(--primary-blue);
}

.nav-item:hover {
    color: var(--primary-blue);
}

.nav-item i {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.nav-item span {
    font-size: 0.7rem;
    font-weight: 500;
}

footer {
    text-align: center;
    padding: 2rem 1rem;
    background: linear-gradient(135deg, #F8FAFC 0%, #F1F5F9 100%);
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-light);
    margin-top: 2rem;
    box-shadow: 0 -2px 8px rgba(0,0,0,0.04);
}

footer a {
    color: var(--text-tertiary);
    text-decoration: none;
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-weight: 400;
}

footer a:hover {
    background: var(--primary-blue-soft);
    color: var(--primary-blue);
    transform: translateY(-1px);
    box-shadow: var(--shadow-soft);
    font-weight: 500;
}

@media (min-width: 768px) {
    .app-main {
        padding: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .sources-grid,
    .citations-list,
    .projects-grid,
    .tasks-list,
    .team-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
    
    .synthesis-content {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    
    .writing-tools {
        grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    }
    
    .bottom-nav {
        display: none;
    }
    
    .top-nav {
        display: flex;
    }
    
    body {
        padding-bottom: 0;
    }
    
    .app-header {
        position: static;
        padding: 1.5rem;
    }
    
    .header-logo h1 {
        font-size: 2rem;
    }
    
    .logo-img {
        height: 56px;
    }
    
    .section {
        display: block;
        padding: 2rem 0;
    }
    
    .section:not(.active) {
        display: none;
    }
    
    .modal-content {
        max-width: 600px;
        margin: 30px auto 0 auto;
        max-height: calc(100vh - 200px);
    }
}

@media (min-width: 1024px) {
    .modal-content {
        margin: 30px auto 0 auto;
        width: 70%;
        max-height: calc(100vh - 200px);
    }
    
    .sources-grid,
    .projects-grid {
        grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    }
    
    .team-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

.status-pending {
    color: var(--warning-amber);
}

.status-in-progress {
    color: var(--primary-blue);
}

.status-completed {
    color: var(--success-green);
}

.priority-low {
    border-left-color: var(--success-green);
}

.priority-medium {
    border-left-color: var(--warning-amber);
}

.priority-high {
    border-left-color: var(--error-red);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

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

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }

.d-flex {
    display: flex;
}

.justify-between {
    justify-content: space-between;
}

.align-center {
    align-items: center;
}

.gap-1 {
    gap: 1rem;
}

.flex-wrap {
    flex-wrap: wrap;
}

/* Responsividade para dispositivos móveis */
@media (max-width: 767px) {
    .app-main {
        padding: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .sources-grid,
    .citations-list,
    .projects-grid,
    .tasks-list,
    .team-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .synthesis-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .writing-tools {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .section-header h2 {
        font-size: 1.25rem;
    }
    
    .btn {
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
        min-height: 44px; /* Tamanho mínimo recomendado para touch */
    }
    
    .bottom-nav {
        display: flex;
        padding: 0.75rem 0;
    }
    
    .bottom-nav .nav-item {
        padding: 0.75rem 0.5rem;
        min-height: 44px;
    }
    
    body {
        padding-bottom: 90px;
    }
    
    .app-header {
        position: sticky;
        padding: 1rem 0.75rem;
    }
    
    .header-logo h1 {
        font-size: 1.25rem;
    }
    
    .header-logo {
        gap: 0.75rem;
    }
    
    .logo-img {
        height: 40px;
    }
    
    .section {
        display: none;
    }
    
    .section:not(.active) {
        display: none;
    }
    
    .modal-content {
        margin: 30px 1rem 0 1rem;
        max-width: calc(100vw - 2rem);
        max-height: calc(100vh - 180px);
        padding: 1.25rem;
        border-radius: 12px;
    }
    
    /* Ajustar modal para telas muito pequenas */
    @media (max-height: 600px) {
        .modal-content {
            margin: 30px 1rem 0 1rem;
            max-height: calc(100vh - 140px);
            padding: 1rem;
        }
    }
    
    .stat-card {
        padding: 1.25rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .source-card,
    .citation-item,
    .project-card,
    .task-item,
    .member-card {
        padding: 1.25rem;
    }
    
    .source-meta,
    .task-meta,
    .project-meta,
    .member-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    /* Melhorar usabilidade em touch */
    .btn-small {
        min-height: 36px;
        padding: 0.5rem 0.75rem;
    }
    
    /* Otimizar espaçamentos para mobile */
    .filters {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .filters select,
    .filters input {
        min-height: 44px;
        font-size: 1rem; /* Evitar zoom no iOS */
    }
    
    /* Melhorar acessibilidade em dispositivos móveis */
    .notification {
        right: 1rem;
        left: 1rem;
        max-width: none;
    }
}