/* ============================================================
   LESSON — modal de lição em tela cheia: perguntas (mcq, fill,
   match, tf), o editor de código (SQL e Python) e a tela de
   conclusão. É o CSS mais usado do site (abre a cada exercício).
   Por que separado: é reaproveitado por TODAS as trilhas —
   inclusive a nova trilha Python usa .sql-box/.run-btn/etc para
   seu próprio editor de código, então manter isso centralizado
   evita duplicar estilo por trilha.
   ============================================================ */
.overlay{position:fixed;inset:0;z-index:100;background:var(--bg);display:none;flex-direction:column;}
.overlay.open{display:flex;}
.lesson-top{display:flex;align-items:center;gap:14px;padding:14px 18px;border-bottom:1px solid var(--border);flex-shrink:0;}
.lesson-close{width:34px;height:34px;border-radius:10px;background:var(--surface);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--text-dim);}
.lesson-close:hover{background:var(--surface-2);}
.lesson-close svg{width:16px;height:16px;}
.lesson-progress-track{flex:1;height:10px;border-radius:6px;background:var(--surface);overflow:hidden;}
.lesson-progress-fill{height:100%;border-radius:6px;transition:width .35s;background:var(--core);}
.hearts{display:flex;gap:3px;flex-shrink:0;}
.hearts svg{width:19px;height:19px;}

.lesson-body{flex:1;overflow-y:auto;display:flex;justify-content:center;padding:24px 18px 110px;}
.lesson-card{width:100%;max-width:640px;}
.q-eyebrow{font-family:var(--font-mono);font-size:11px;color:var(--text-faint);text-transform:uppercase;letter-spacing:1px;margin-bottom:10px;}
.q-prompt{font-family:var(--font-display);font-weight:700;font-size:clamp(19px,3vw,25px);line-height:1.3;margin-bottom:22px;}
.q-hint{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:12px 14px;font-size:12.5px;color:var(--text-dim);margin-bottom:20px;line-height:1.55;}
.q-hint code{font-family:var(--font-mono);background:var(--surface-2);padding:1px 5px;border-radius:4px;color:var(--core);}

.options-list{display:flex;flex-direction:column;gap:10px;}
.opt-btn{width:100%;text-align:left;padding:14px 16px;border-radius:13px;background:var(--surface);border:2px solid var(--border);font-size:14.5px;font-weight:500;transition:.12s;line-height:1.4;}
.opt-btn:hover:not(:disabled){border-color:var(--surface-3);background:var(--surface-2);}
.opt-btn.selected{border-color:var(--core);background:var(--core-dim);}
.opt-btn.correct{border-color:var(--ok);background:#34D39920;}
.opt-btn.wrong{border-color:var(--err);background:#F8717120;}
.opt-btn:disabled{cursor:default;}

.blank-row{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-family:var(--font-mono);font-size:16px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:16px;line-height:2.1;}
.blank-input{background:var(--surface-2);border:2px solid var(--border);border-radius:8px;padding:4px 10px;color:var(--core);font-family:var(--font-mono);font-size:15px;min-width:64px;text-align:center;display:inline-block;cursor:pointer;}
.word-bank{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px;}
.word-chip{padding:9px 16px;border-radius:10px;background:var(--surface-2);border:1px solid var(--border);font-family:var(--font-mono);font-size:13.5px;font-weight:500;}
.word-chip:hover:not(:disabled){border-color:var(--core);}
.word-chip.used{opacity:.3;}

.match-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.match-col{display:flex;flex-direction:column;gap:8px;}
.match-item{padding:11px 12px;border-radius:11px;background:var(--surface);border:2px solid var(--border);font-size:12.5px;font-weight:500;text-align:left;min-height:44px;display:flex;align-items:center;line-height:1.3;width:100%;}
.match-item.selected{border-color:var(--core);}
.match-item.paired{border-color:var(--ok);background:#34D39915;}
.match-item.wrong-flash{border-color:var(--err);background:#F8717120;}

.sql-box{background:#0d1526;border:1px solid var(--border);border-radius:12px;overflow:hidden;margin-bottom:14px;}
.sql-box-head{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--surface-2);font-family:var(--font-mono);font-size:11px;color:var(--text-faint);}
.sql-dot{width:8px;height:8px;border-radius:50%;}
.sql-textarea{width:100%;min-height:110px;background:transparent;border:none;color:#7dd3fc;font-family:var(--font-mono);font-size:13.5px;padding:14px;resize:vertical;line-height:1.6;}
.sql-textarea:focus{outline:none;}
.run-btn{padding:10px 18px;border-radius:10px;background:var(--sql);color:#04182b;font-family:var(--font-display);font-weight:700;font-size:13px;display:inline-flex;align-items:center;gap:7px;}
.run-btn:disabled{opacity:.5;}
.result-table-wrap{margin-top:12px;max-height:200px;overflow:auto;border:1px solid var(--border);border-radius:10px;}
table.result-table{width:100%;border-collapse:collapse;font-family:var(--font-mono);font-size:12px;}
table.result-table th{background:var(--surface-2);padding:7px 10px;text-align:left;position:sticky;top:0;color:var(--text-dim);font-weight:600;border-bottom:1px solid var(--border);}
table.result-table td{padding:6px 10px;border-bottom:1px solid var(--border);color:var(--text);}
table.result-table tr:last-child td{border-bottom:none;}
.sql-error{color:var(--err);font-family:var(--font-mono);font-size:12px;margin-top:10px;padding:10px;background:#F8717115;border-radius:8px;}

/* Editor Python reaproveita a mesma "skin" do editor SQL, trocando a cor de destaque */
.py-box{background:#0d1526;border:1px solid var(--border);border-radius:12px;overflow:hidden;margin-bottom:14px;}
.py-box .sql-box-head{color:var(--text-faint);}
.run-btn.py-run{background:var(--python);color:#04211a;}
.py-stdout{font-family:var(--font-mono);font-size:12px;background:var(--surface-2);border-radius:10px;padding:10px 12px;margin-top:10px;white-space:pre-wrap;color:#a7f3d0;max-height:180px;overflow:auto;}

.lesson-footer{position:fixed;bottom:0;left:0;right:0;z-index:5;background:var(--bg);border-top:1px solid var(--border);padding:16px 18px;display:flex;justify-content:center;}
.lesson-footer-inner{width:100%;max-width:640px;display:flex;align-items:center;gap:14px;}
.feedback-msg{flex:1;font-family:var(--font-display);font-weight:700;font-size:14.5px;display:flex;align-items:center;gap:8px;}
.feedback-msg.ok{color:var(--ok);}
.feedback-msg.err{color:var(--err);}
.feedback-sub{font-family:var(--font-body);font-weight:400;color:var(--text-dim);font-size:12px;display:block;margin-top:2px;}
.primary-btn{padding:13px 26px;border-radius:13px;background:var(--core);color:#04211d;font-family:var(--font-display);font-weight:700;font-size:14px;white-space:nowrap;transition:.12s;}
.primary-btn:hover{filter:brightness(1.08);}
.primary-btn.retry{background:var(--err);color:#2b0808;}

.complete-screen{max-width:440px;margin:60px auto;text-align:center;padding:0 20px;}
.complete-icon{width:88px;height:88px;margin:0 auto 20px;}
.complete-title{font-family:var(--font-display);font-weight:700;font-size:26px;margin-bottom:8px;}
.complete-sub{color:var(--text-dim);font-size:14px;margin-bottom:26px;}
.complete-stats{display:flex;gap:12px;justify-content:center;margin-bottom:30px;}
.complete-stat{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:14px 20px;min-width:100px;}
.complete-stat .cs-val{font-family:var(--font-display);font-weight:700;font-size:22px;color:var(--core);}
.complete-stat .cs-lbl{font-size:10.5px;color:var(--text-faint);text-transform:uppercase;letter-spacing:.5px;margin-top:2px;}