:root {
    --primary: #2563EB;
    --primary-dark: #1E40AF;
    --secondary: #F3F4F6;
    --accent: #F59E0B;
    --success: #10B981;
    --text-main: #1F2937;
    --text-light: #6B7280;
    --white: #FFFFFF;
    --card-bg: #FFFFFF;
    --sidebar-bg: #FFFFFF;
    --border-color: #E5E7EB;
    --card-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --hover-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

body.dark-mode {
    --primary: #60A5FA;
    --primary-dark: #3B82F6;
    --secondary: #111827;
    --accent: #FBBF24;
    --success: #34D399;
    --text-main: #F9FAFB;
    --text-light: #9CA3AF;
    --white: #1F2937; 
    --card-bg: #1F2937;
    --sidebar-bg: #1F2937;
    --border-color: #374151;
    --card-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

body.daltonic-mode {
    --primary: #FFFF00; 
    --primary-dark: #FFD700;
    --secondary: #000000;
    --accent: #FFFFFF;
    --success: #FFFFFF;
    --text-main: #FFFFFF;
    --text-light: #DDDDDD;
    --white: #000000;
    --card-bg: #000000;
    --sidebar-bg: #000000;
    --border-color: #FFFFFF;
    --card-shadow: none;
    --hover-shadow: none;
}

body.daltonic-mode .card, 
body.daltonic-mode .btn-acao,
body.daltonic-mode .nav-btn,
body.daltonic-mode .menu-lateral,
body.daltonic-mode input,
body.daltonic-mode textarea,
body.daltonic-mode .btn-acessibilidade-toggle {
    border: 2px solid #FFFFFF !important;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', 'Segoe UI', sans-serif; }

body {
    background-color: var(--secondary);
    color: var(--text-main);
    display: flex;
    height: 100vh;
    overflow: hidden;
    transition: background-color 0.3s, color 0.3s;
}

body.dyslexic-font * {
    font-family: 'Comic Sans MS', 'Chalkboard SE', 'Comic Neue', sans-serif !important;
    letter-spacing: 0.05em;
    line-height: 1.6;
}

.skip-link {
    position: absolute; top: -40px; left: 0; background: var(--primary); color: white;
    padding: 8px; z-index: 10001; text-decoration: none; font-weight: bold;
    transition: top 0.3s;
}
.skip-link:focus { top: 0; }

.historia-conteiner {
    height: 500px;
    overflow-y: auto;
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.acessibilidade-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 10000;
    display: flex;
    flex-direction: column-reverse;
    align-items: flex-end;
    gap: 15px;
}

.btn-acessibilidade-toggle {
    height: 60px;
    width: 60px;
    border-radius: 30px;
    background-color: #2563EB;
    color: white;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    overflow: hidden;
    white-space: nowrap;
    padding: 0;
}

.texto-expandido {
    font-size: 1rem;
    font-weight: bold;
    max-width: 0;
    opacity: 0;
    margin-right: 0;
    transition: all 0.4s ease;
    overflow: hidden;
}

.btn-acessibilidade-toggle:hover {
    width: 200px;
    padding: 0 20px;
    justify-content: space-between;
}

.btn-acessibilidade-toggle:hover .texto-expandido {
    max-width: 150px;
    opacity: 1;
    margin-right: 10px;
}

.menu-acessibilidade {
    background: var(--card-bg);
    padding: 15px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
    width: 250px;
    border: 1px solid var(--border-color);
    opacity: 1;
    transform: translateY(0);
    transition: 0.3s;
}

.menu-acessibilidade.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
    display: none;
}

.menu-acessibilidade h3 {
    font-size: 1rem; margin-bottom: 10px; color: var(--text-main);
    border-bottom: 1px solid var(--border-color); padding-bottom: 5px;
}

.btn-acess-opt {
    width: 100%;
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 10px;
    margin-bottom: 5px;
    border-radius: 8px;
    cursor: pointer;
    text-align: left;
    display: flex; align-items: center; gap: 10px;
    transition: 0.2s;
}

.btn-acess-opt:hover { background: var(--border-color); }

.loader-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: var(--white); z-index: 9999;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    transition: opacity 0.5s;
}
.loader-overlay.hidden { opacity: 0; pointer-events: none; }

.spinner {
    width: 50px; height: 50px;
    border: 5px solid var(--border-color); border-top-color: var(--primary);
    border-radius: 50%; animation: spin 1s linear infinite;
    margin-bottom: 15px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.menu-lateral {
    width: 260px;
    background: var(--sidebar-bg);
    display: flex; flex-direction: column;
    padding: 25px;
    box-shadow: 2px 0 10px rgba(0,0,0,0.05);
    z-index: 10;
    border-right: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

.btn-close-sidebar {
    display: none;
    background: none; border: none; font-size: 1.5rem; color: var(--text-main); cursor: pointer;
}

.logo-container {
    display: flex; align-items: center; gap: 10px;
    margin-bottom: 50px; color: var(--primary);
    justify-content: space-between;
}
.logo-icon { font-size: 1.8rem; }
.logo-text { display: flex; flex-direction: column; line-height: 1; }
.logo-text span { font-size: 0.8rem; letter-spacing: 2px; color: var(--text-light); }
.logo-text strong { font-size: 1.2rem; font-weight: 800; color: var(--text-main); }

.nav-links { list-style: none; flex: 1; }
.nav-btn {
    width: 100%; background: transparent; border: none;
    padding: 15px 20px; margin-bottom: 8px;
    display: flex; align-items: center;
    color: var(--text-light); font-size: 1rem; font-weight: 500;
    border-radius: 12px; cursor: pointer; position: relative;
    transition: all 0.3s ease;
}
.nav-btn i { margin-right: 15px; width: 20px; text-align: center; transition: transform 0.3s; }

.nav-btn:hover { background: rgba(37, 99, 235, 0.1); color: var(--primary); }
.nav-btn:hover i { transform: scale(1.2); }

.nav-btn.ativo {
    background: var(--primary); color: #FFFFFF; 
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}
.nav-btn.ativo { color: #FFFFFF !important; } 

.menu-footer { margin-top: auto; }
.btn-sair {
    width: 100%; border: 1px solid #fee2e2; background: rgba(254, 242, 242, 0.5);
    color: #ef4444; padding: 12px; border-radius: 8px;
    cursor: pointer; font-weight: 600; transition: 0.3s;
}
.btn-sair:hover { background: #fee2e2; }

.conteudo-principal {
    flex: 1; padding: 30px 50px;
    overflow-y: auto; scroll-behavior: smooth;
    padding-bottom: 120px; 
}

.conteudo-principal::-webkit-scrollbar { width: 8px; }
.conteudo-principal::-webkit-scrollbar-track { background: transparent; }
.conteudo-principal::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 4px; }

header.top-bar {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 40px;
}

.header-left { display: flex; align-items: center; gap: 15px; }
.btn-menu-mobile {
    display: none; background: none; border: none; font-size: 1.5rem;
    color: var(--text-main); cursor: pointer;
}

h1 { font-size: 1.8rem; color: var(--text-main); font-weight: 700; }

.perfil-usuario { display: flex; align-items: center; gap: 15px; }
.info-user { text-align: right; }
.info-user .saudacao { display: block; font-size: 0.8rem; color: var(--text-light); }
.info-user .nome { display: block; font-weight: 700; color: var(--text-main); }
.avatar {
    width: 45px; height: 45px; background: var(--card-bg);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    color: var(--primary); font-size: 1.2rem;
    border: 2px solid var(--border-color); box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.banner-boas-vindas {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white; padding: 30px; border-radius: 20px;
    margin-bottom: 30px; box-shadow: 0 10px 20px rgba(37, 99, 235, 0.2);
    animation: slideDown 0.5s ease;
}
.banner-boas-vindas h2 { margin-bottom: 10px; color: white; }
.banner-boas-vindas p { color: rgba(255,255,255,0.9); }

.grid-cards {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 30px;
}

.card {
    background: var(--card-bg); border-radius: 20px;
    box-shadow: var(--card-shadow); overflow: hidden;
    position: relative; transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid var(--border-color);
}
.card-interativo:hover {
    transform: translateY(-10px); box-shadow: var(--hover-shadow);
    border-color: var(--primary);
}

.card-badge {
    position: absolute; top: 20px; right: 20px;
    background: rgba(255, 255, 255, 0.9); color: var(--primary-dark);
    font-size: 0.7rem; font-weight: 700; padding: 5px 10px;
    border-radius: 20px; text-transform: uppercase; z-index: 2;
}

.card-icon {
    height: 100px; display: flex; align-items: center; justify-content: center;
    font-size: 3rem; color: white; margin-bottom: -30px; 
    clip-path: polygon(0 0, 100% 0, 100% 80%, 0 100%);
}
.bg-blue { background: linear-gradient(45deg, #4facfe 0%, #00f2fe 100%); }
.bg-orange { background: linear-gradient(45deg, #f093fb 0%, #f5576c 100%); }
.bg-purple { background: linear-gradient(45deg, #a18cd1 0%, #fbc2eb 100%); }

.card-body { padding: 20px 25px 30px; }
.card-body h3 { margin-bottom: 5px; margin-top: 15px; font-size: 1.2rem; color: var(--text-main); }
.professor { color: var(--text-light); font-size: 0.9rem; margin-bottom: 20px; }

.progress-container { margin-top: 15px; }
.progress-info { display: flex; justify-content: space-between; font-size: 0.8rem; font-weight: 600; margin-bottom: 5px; color: var(--text-light); }
.progress-bg { height: 8px; background: var(--border-color); border-radius: 4px; overflow: hidden; }
.progress-bar { height: 100%; border-radius: 4px; }
.progress-bar.blue { background: var(--primary); }
.progress-bar.orange { background: var(--accent); }
.progress-bar.purple { background: #8B5CF6; }

.materia-header-banner {
    background: var(--card-bg); padding: 30px; border-radius: 20px;
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 30px; box-shadow: var(--card-shadow);
    border-left: 5px solid var(--primary);
    border: 1px solid var(--border-color);
}
.banner-icon { font-size: 4rem; color: var(--border-color); }
.banner-content h2 { color: var(--text-main); }

.btn-voltar {
    display: flex; align-items: center; gap: 10px;
    background: none; border: none; cursor: pointer;
    margin-bottom: 20px; font-weight: 600; color: var(--text-light);
    transition: 0.3s;
}
.btn-voltar:hover { color: var(--primary); }
.icon-circle {
    width: 30px; height: 30px; background: var(--card-bg);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1); border: 1px solid var(--border-color);
}

.abas-scroll-container {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 5px;
    margin-bottom: 30px;
}
.abas-materia {
    display: flex; gap: 15px; 
    border-bottom: 2px solid var(--border-color); padding-bottom: 10px;
    min-width: max-content;
}
.aba {
    background: none; border: none; padding: 10px 20px;
    font-weight: 600; color: var(--text-light); cursor: pointer;
    border-radius: 8px; transition: 0.3s; display: flex; align-items: center; gap: 8px;
}
.aba:hover { background: var(--border-color); color: var(--text-main); }
.aba.ativo { background: var(--primary); color: #FFFFFF; box-shadow: 0 4px 6px rgba(37, 99, 235, 0.3); }

.conteudo-aba {
    display: none;
    animation: fadeIn 0.3s;
}
.conteudo-aba.ativo {
    display: block;
}

.material-item {
    background: var(--card-bg); padding: 20px; border-radius: 12px;
    display: flex; align-items: center; margin-bottom: 15px;
    box-shadow: var(--card-shadow); border: 1px solid var(--border-color);
    transition: 0.3s;
}
.material-item:hover { border-color: var(--primary); transform: translateX(5px); }
.material-icon {
    width: 50px; height: 50px; background: rgba(37, 99, 235, 0.1); color: var(--primary);
    border-radius: 10px; display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; margin-right: 20px;
    flex-shrink: 0;
}
.btn-download {
    margin-left: auto; background: var(--card-bg); border: 1px solid var(--border-color);
    color: var(--text-main); padding: 8px 16px; border-radius: 8px;
    text-decoration: none; font-weight: 600; transition: 0.3s;
    white-space: nowrap;
}
.btn-download:hover { background: var(--primary); color: #FFFFFF; border-color: var(--primary); }

.card-content { background: var(--card-bg); padding: 30px; border-radius: 20px; box-shadow: var(--card-shadow); border: 1px solid var(--border-color); }
.card-content h2, .card-content h3 { color: var(--text-main); }

.table-responsive { width: 100%; overflow-x: auto; }
.tabela-moderna { width: 100%; border-collapse: separate; border-spacing: 0 10px; margin-top: -10px; min-width: 600px; }
.tabela-moderna th { color: var(--text-light); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1px; text-align: left; padding: 15px; }
.tabela-moderna td { background: var(--card-bg); padding: 20px 15px; transition: 0.3s; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); color: var(--text-main); }
.tabela-moderna tr:hover td { box-shadow: 0 5px 15px rgba(0,0,0,0.05); transform: scale(1.01); }
.tabela-moderna td:first-child { border-top-left-radius: 10px; border-bottom-left-radius: 10px; border-left: 1px solid var(--border-color); }
.tabela-moderna td:last-child { border-top-right-radius: 10px; border-bottom-right-radius: 10px; border-right: 1px solid var(--border-color); }

.td-materia { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.blue { background: var(--primary); }
.dot.orange { background: var(--accent); }
.dot.purple { background: #8B5CF6; }

.badge { padding: 5px 12px; border-radius: 20px; font-size: 0.75rem; font-weight: 700; }
.badge.aprovado { background: rgba(16, 185, 129, 0.2); color: var(--success); }
.badge.cursando { background: rgba(245, 158, 11, 0.2); color: var(--accent); }

.input-group { display: flex; flex-direction: column; gap: 15px; margin-top: 20px; }
.input-texto {
    width: 100%; padding: 15px; border: 2px solid var(--border-color); border-radius: 12px;
    outline: none; transition: 0.3s; resize: vertical; font-size: 1rem;
    background: var(--card-bg); color: var(--text-main);
}
.input-texto:focus { border-color: var(--primary); box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1); }

.input-wrapper { position: relative; width: 100%; }
.btn-mic {
    position: absolute; right: 10px; bottom: 10px;
    background: transparent; border: none; color: var(--text-light);
    font-size: 1.2rem; cursor: pointer; transition: 0.2s;
    padding: 5px; border-radius: 50%;
}
.btn-mic:hover { color: var(--primary); background: rgba(0,0,0,0.05); }
.btn-mic.ouvindo { color: #ef4444; animation: pulse 1s infinite; }

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.btn-acao {
    background: var(--primary); color: #FFFFFF; border: none; padding: 15px 30px;
    border-radius: 12px; font-weight: 700; cursor: pointer; align-self: flex-end;
    transition: 0.3s; box-shadow: 0 4px 6px rgba(37, 99, 235, 0.2);
}
.btn-acao:hover { background: var(--primary-dark); transform: translateY(-2px); }

.secao { display: none; }
.secao.ativo { display: block; animation: fadeIn 0.5s; }
.anime-up { animation: slideUp 0.4s ease forwards; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

.mobile-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5); z-index: 9;
    opacity: 0; pointer-events: none; transition: 0.3s;
}
.mobile-overlay.active { opacity: 1; pointer-events: all; }

@media (max-width: 768px) {
    .menu-lateral {
        position: fixed; left: -280px; top: 0; height: 100vh;
        z-index: 20;
    }
    .menu-lateral.open { left: 0; box-shadow: 5px 0 15px rgba(0,0,0,0.1); }
    
    .btn-close-sidebar { display: block; }
    .btn-menu-mobile { display: block; }
    
    .conteudo-principal { padding: 20px; padding-bottom: 120px; }
    
    .grid-cards { grid-template-columns: 1fr; }
    
    .materia-header-banner {
        flex-direction: column; text-align: center; gap: 20px;
        padding: 20px;
    }
    .materia-header-banner .banner-icon { display: none; }
    .materia-header-banner { border-left: 1px solid var(--border-color); border-top: 5px solid var(--primary); }
    
    .banner-boas-vindas { text-align: center; }
    
    .info-user { display: none; }
    
    .acessibilidade-float { bottom: 20px; right: 20px; }
    .btn-acessibilidade-toggle:hover { width: 60px; padding: 0; } 
    .btn-acessibilidade-toggle:hover .texto-expandido { opacity: 0; max-width: 0; margin-right: 0; }
}