:root {
    --primary: #1a237e;
    --primary-light: #e8eaf6;
    --correct: #2e7d32;
    --correct-bg: #e8f5e9;
    --wrong: #c62828;
    --wrong-bg: #ffebee;
    --warn: #e65100;
    --help: #6a1b9a;
    --help-light: #f3e5f5;
    --bg: #f4f6f8;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    max-width: 980px;
    margin: 0 auto;
    padding: 20px;
    background: var(--bg);
}

h1 {
    color: var(--primary);
    text-align: center;
    border-bottom: 3px solid var(--primary);
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.provas-bar {
    background: #fff;
    padding: 14px 18px;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.provas-controle, .provas-acoes, .btn-row, .flex-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.provas-controle select {
    flex: 1;
    min-width: 220px;
    padding: 8px;
    border: 1px solid #bbb;
    border-radius: 5px;
    font-size: 14px;
    font-weight: bold;
    color: var(--primary);
}

.btn {
    padding: 8px 14px;
    font-size: 13px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    background: var(--primary);
    color: #fff;
    display: inline-block;
    transition: opacity 0.2s, transform 0.1s;
}
.btn:hover { opacity: 0.9; }
.btn-sec { background: #455a64; }
.btn-ok { background: var(--correct); }
.btn-del { background: var(--wrong); }
.btn-warn { background: var(--warn); }
.btn-warn.ativo { box-shadow: 0 0 0 3px #ffcc80; }
.btn-help { background: var(--help); }
.btn-help.locked {
    background: #9e9e9e;
    cursor: not-allowed;
    opacity: 0.85;
}
.btn-help.ativo { box-shadow: 0 0 0 3px #ce93d8; }
.file-label { cursor: pointer; }

.dashboard {
    position: sticky;
    top: 0;
    background: #fff;
    padding: 12px 18px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
    z-index: 90;
}

.placar {
    font-weight: bold;
    color: var(--primary);
    font-size: 1.05em;
    margin-bottom: 6px;
}

.progresso-wrap {
    width: 100%;
    height: 8px;
    background: #e0e0e0;
    border-radius: 99px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progresso-barra {
    height: 100%;
    width: 0%;
    background: var(--primary);
    transition: width 0.3s ease, background 0.3s ease;
}

.progresso-barra.completo {
    background: var(--correct);
}

.materias-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.85em;
}

.stat-pill {
    background: var(--primary-light);
    color: var(--primary);
    padding: 3px 10px;
    border-radius: 12px;
    font-weight: bold;
}

.editor-panel {
    display: none;
    background: #fff;
    border: 2px solid var(--primary);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 22px;
}

.editor-panel h3 { margin-top: 0; color: var(--primary); }
.hint { font-size: 0.9em; margin-top: 0; color: #555; }
.editor-grid { display: grid; gap: 10px; margin-bottom: 14px; }
.editor-panel label { font-weight: bold; font-size: 0.9em; display: block; margin-bottom: 3px; }
.editor-panel input, .editor-panel textarea, .editor-panel select {
    width: 100%;
    box-sizing: border-box;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-family: inherit;
    font-size: 14px;
}

.f1 { flex: 1; }
.f2 { flex: 2; }

/* PAINEL DO PLANO DE REFORÇO */
.reforco-panel {
    margin-bottom: 25px;
}

.reforco-header {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 15px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.07);
    border-left: 6px solid var(--help);
}

.reforco-header.parabens {
    border-left-color: var(--correct);
    background: #f9fff9;
}

.reforco-header h2 {
    margin-top: 0;
    color: var(--help);
}

.reforco-header.parabens h2 {
    color: var(--correct);
}

.reforco-filtros {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
}

.reforco-card {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 22px;
    margin-bottom: 20px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.reforco-card-topo {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    border-bottom: 2px solid #eee;
    padding-bottom: 10px;
    margin-bottom: 14px;
}

.reforco-card-topo h3 {
    margin: 0;
    color: var(--primary);
}

.reforco-badge-erro {
    background: var(--wrong-bg);
    color: var(--wrong);
    border: 1px solid var(--wrong);
    padding: 4px 10px;
    border-radius: 14px;
    font-size: 0.85em;
    font-weight: bold;
}

.reforco-badge-ok {
    background: var(--correct-bg);
    color: var(--correct);
    border: 1px solid var(--correct);
    padding: 4px 10px;
    border-radius: 14px;
    font-size: 0.85em;
    font-weight: bold;
}

.reforco-secao {
    margin-bottom: 14px;
}

.reforco-secao h4 {
    margin: 0 0 6px 0;
    color: #1565c0;
    font-size: 0.98em;
}

.reforco-formulas {
    background: #f5f7ff;
    border: 1px solid #c5cae9;
    border-left: 5px solid var(--primary);
    border-radius: 5px;
    padding: 12px 16px;
    margin-bottom: 14px;
}

.formula-item {
    padding: 5px 0;
    border-bottom: 1px dashed #d0d5e8;
    font-size: 0.95em;
}

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

.formula-eq {
    font-family: 'Consolas', 'Courier New', monospace;
    font-weight: bold;
    color: #0d47a1;
    background: #e8eaf6;
    padding: 2px 6px;
    border-radius: 3px;
}

.reforco-aplicar {
    background: #fff8e1;
    border-left: 5px solid #f57f17;
    padding: 12px 16px;
    border-radius: 4px;
    font-size: 0.95em;
    margin-bottom: 14px;
}

.reforco-erros-lista {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    font-size: 0.9em;
}

.reforco-erro-chip {
    background: var(--wrong-bg);
    color: var(--wrong);
    border: 1px solid #ef9a9a;
    padding: 4px 10px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    font-size: 0.85em;
}
.reforco-erro-chip:hover {
    background: var(--wrong);
    color: #fff;
}

/* SUMÁRIO E QUESTÕES */
.sumario {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 15px 20px;
    margin-bottom: 20px;
}
.sumario h3 { margin-top: 0; color: var(--primary); }
.sumario-links { display: flex; flex-wrap: wrap; gap: 6px; }
.sumario-links a {
    padding: 5px 10px;
    background: var(--primary-light);
    color: var(--primary);
    text-decoration: none;
    border-radius: 4px;
    font-weight: bold;
    font-size: 0.85em;
}
.sumario-links a.done-correct {
    background: var(--correct-bg);
    color: var(--correct);
    border: 1px solid var(--correct);
}
.sumario-links a.done-wrong {
    background: var(--wrong-bg);
    color: var(--wrong);
    border: 1px solid var(--wrong);
}

.questao {
    background: #fff;
    border: 1px solid #ddd;
    padding: 22px;
    margin-bottom: 22px;
    border-radius: 8px;
    scroll-margin-top: 125px;
}
.prova-tag { font-size: 0.78em; color: #666; margin-bottom: 6px; font-weight: bold; }

.alternativas { list-style: none; padding-left: 0; margin-top: 14px; }
.alternativas li { margin-bottom: 8px; }
.alternativas label {
    display: block;
    padding: 10px 14px;
    background: #f5f5f5;
    border-radius: 4px;
    cursor: pointer;
    border: 2px solid transparent;
}
.alternativas label:hover { background: #e0e0e0; }
.alternativas input[type="radio"] { display: none; }
.alternativas input[type="radio"]:checked + span { font-weight: bold; }
.alternativas input[type="radio"]:checked + span::before { content: "✓ "; color: var(--primary); }
.alternativas label.selected { background: var(--primary-light); border-color: var(--primary); }
.alternativas label.correct { background: var(--correct-bg); border-color: var(--correct); color: var(--correct); }
.alternativas label.wrong { background: var(--wrong-bg); border-color: var(--wrong); color: var(--wrong); }

.btn-individual {
    display: block;
    width: 100%;
    padding: 11px;
    margin-top: 14px;
    background: #f0f0f0;
    border: 1px solid #ccc;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    color: #333;
}
.btn-individual.checked {
    background: var(--correct-bg);
    border-color: var(--correct);
    color: var(--correct);
    cursor: default;
}
.btn-individual.checked-wrong {
    background: var(--wrong-bg);
    border-color: var(--wrong);
    color: var(--wrong);
    cursor: default;
}

.explicacao {
    display: none;
    margin-top: 14px;
    padding: 14px;
    background: #e3f2fd;
    border-left: 5px solid #1565c0;
    border-radius: 4px;
    font-size: 0.95em;
}

.diag-erro {
    background: var(--wrong-bg);
    border-left: 5px solid var(--wrong);
    padding: 10px 12px;
    border-radius: 4px;
    margin-bottom: 10px;
    color: #7f0000;
}

.diag-acerto {
    background: var(--correct-bg);
    border-left: 5px solid var(--correct);
    padding: 10px 12px;
    border-radius: 4px;
    margin-bottom: 10px;
    color: #1b5e20;
}

.materia {
    display: inline-block;
    background: #1565c0;
    color: #fff;
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 0.78em;
    margin-bottom: 8px;
    text-transform: uppercase;
}

@media print {
    .provas-bar, .dashboard, .editor-panel, .btn-individual, .sumario, .reforco-filtros, .reforco-erros-lista { display: none !important; }
    .questao, .reforco-card { border: 1px solid #000; break-inside: avoid; }
    .explicacao { display: block !important; }
}