/* Polku — Mẫu câu (/lauseet/) */
.lau-wrap{max-width:1000px;margin:0 auto;padding:18px 16px 60px;font-family:'Plus Jakarta Sans',system-ui,sans-serif;color:#0f172a;}

/* màu vai trò */
.lau-subj{--c:#2563eb;--bg:#eff6ff}
.lau-verb{--c:#16a34a;--bg:#f0fdf4}
.lau-obj{--c:#d97706;--bg:#fffbeb}
.lau-place{--c:#0d9488;--bg:#f0fdfa}
.lau-time{--c:#7c3aed;--bg:#f5f3ff}

/* hero */
.lau-hero{display:flex;gap:14px;align-items:center;margin-bottom:18px}
.lau-hero-ic{width:54px;height:54px;flex:0 0 54px;border-radius:16px;background:linear-gradient(135deg,#eef2ff,#dbeafe);display:flex;align-items:center;justify-content:center;font-size:28px}
.lau-h1{font-size:1.5rem;font-weight:800;margin:0 0 2px}
.lau-sub{margin:0;color:#64748b;font-size:.93rem;line-height:1.5}

/* card */
.lau-card{background:#fff;border:1px solid #e9eef5;border-radius:18px;padding:18px 18px 20px;margin-bottom:16px;box-shadow:0 1px 2px rgba(15,23,42,.04)}
.lau-h2{font-size:1.06rem;font-weight:800;margin:0 0 4px}
.lau-note{margin:0 0 14px;color:#64748b;font-size:.88rem;line-height:1.5}
.lau-note b{color:#334155}

/* 1) khung vai trò */
.lau-slots{display:flex;align-items:stretch;gap:6px;flex-wrap:wrap}
.lau-slot{flex:1 1 120px;min-width:104px;border:1.5px solid var(--c);background:var(--bg);border-radius:14px;padding:10px 8px;display:flex;flex-direction:column;gap:2px;text-align:center}
.lau-slot-q{font-weight:800;font-size:.92rem;color:var(--c)}
.lau-slot-t{font-size:.75rem;color:#64748b}
.lau-slot-ex{margin-top:4px;font-weight:700;font-size:.9rem;color:#0f172a}
.lau-arrow{align-self:center;color:#94a3b8;font-size:1.3rem;font-weight:700}

/* 2) builder */
.lau-builder{display:flex;flex-direction:column;gap:12px}
.lau-row{display:flex;gap:10px;align-items:flex-start}
.lau-row-lb{flex:0 0 64px;font-weight:800;font-size:.72rem;padding:6px 8px;border-radius:9px;color:#fff;text-align:center;margin-top:2px;letter-spacing:.02em}
.lau-row-lb.lau-subj{background:#2563eb}.lau-row-lb.lau-verb{background:#16a34a}
.lau-row-lb.lau-obj{background:#d97706}
.lau-row-lb.lau-place{background:#0d9488}.lau-row-lb.lau-time{background:#7c3aed}
.lau-chips{display:flex;flex-wrap:wrap;gap:7px;flex:1}
.lau-chip{border:1.5px solid #e2e8f0;background:#fff;border-radius:11px;padding:7px 11px;font-size:.9rem;font-weight:700;color:#0f172a;cursor:pointer;transition:.12s;line-height:1.2}
.lau-chip i{font-style:normal;font-weight:500;color:#94a3b8;font-size:.82rem;margin-left:3px}
.lau-chip:hover{border-color:#cbd5e1;background:#f8fafc}
.lau-chip.on{border-color:#2563eb;background:#eff6ff;color:#1d4ed8}
.lau-chip.on i{color:#60a5fa}

/* output */
.lau-out{margin-top:18px;border:1.5px dashed #cbd5e1;border-radius:16px;padding:18px 16px;background:#f8fafc;text-align:center}
.lau-out-fi{font-size:1.5rem;font-weight:800;line-height:1.4;word-spacing:1px}
.lau-w{display:inline-block}
.lau-subj-w{color:#2563eb}.lau-verb-w{color:#16a34a}.lau-obj-w{color:#d97706}
.lau-place-w{color:#0d9488}.lau-time-w{color:#7c3aed}
.lau-dot{color:#0f172a}
.lau-out-vi{margin-top:6px;color:#475569;font-size:1rem;font-weight:600}
.lau-out-actions{margin-top:14px;display:flex;gap:8px;justify-content:center;flex-wrap:wrap}
.lau-btn{border:none;background:#2563eb;color:#fff;font-weight:700;font-size:.9rem;padding:9px 16px;border-radius:11px;cursor:pointer;font-family:inherit}
.lau-btn:hover{background:#1d4ed8}
.lau-btn-ghost{background:#fff;color:#334155;border:1.5px solid #e2e8f0}
.lau-btn-ghost:hover{background:#f1f5f9}

/* panel "Vì sao đúng?" */
.lau-why{margin-top:12px;display:flex;flex-direction:column;gap:7px}
.lau-why[hidden]{display:none}
.lau-why-row{display:flex;gap:9px;align-items:flex-start;background:#fff;border:1px solid #eef2f7;border-radius:11px;padding:9px 12px;font-size:.88rem;line-height:1.5;color:#334155;text-align:left}
.lau-why-dot{flex:0 0 9px;width:9px;height:9px;border-radius:50%;margin-top:5px}
.lau-why-row b{color:#0f172a}
.lau-mono{font-weight:800;letter-spacing:.3px}
.lau-mono em{font-style:normal;color:#dc2626}
.lau-mut{color:#94a3b8;font-size:.82rem;font-weight:600}
.lau-why-tip{font-size:.84rem;color:#64748b;background:#f8fafc;border:1px dashed #d8e0ea;border-radius:11px;padding:9px 12px;text-align:left}
.lau-why-tip b{color:#334155}
.lau-dot-subj{background:#2563eb}.lau-dot-verb{background:#16a34a}.lau-dot-obj{background:#d97706}
.lau-dot-place{background:#0d9488}.lau-dot-time{background:#7c3aed}

/* 3) patterns */
.lau-pat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:12px}
.lau-pat{border:1px solid #e9eef5;border-radius:14px;padding:14px 15px;background:#fcfdff}
.lau-pat-top{display:flex;align-items:center;gap:8px;margin-bottom:9px}
.lau-pat-n{width:22px;height:22px;flex:0 0 22px;border-radius:7px;background:#2563eb;color:#fff;font-weight:800;font-size:.8rem;display:flex;align-items:center;justify-content:center}
.lau-pat-tag{font-size:.74rem;font-weight:700;color:#64748b;background:#f1f5f9;padding:2px 8px;border-radius:20px}
/* công thức tô màu */
.lau-pat-formula{display:flex;flex-wrap:wrap;align-items:center;gap:5px;margin-bottom:9px}
.lau-fp{font-size:.76rem;font-weight:700;padding:3px 9px;border-radius:8px;border:1.3px solid}
.lau-fp-plus{color:#94a3b8;font-weight:700;font-size:.8rem}
.lau-fp-subj{color:#1d4ed8;background:#eff6ff;border-color:#bfdbfe}
.lau-fp-verb{color:#15803d;background:#f0fdf4;border-color:#bbf7d0}
.lau-fp-obj{color:#b45309;background:#fffbeb;border-color:#fde68a}
.lau-fp-place{color:#0f766e;background:#f0fdfa;border-color:#99f6e4}
.lau-fp-time{color:#6d28d9;background:#f5f3ff;border-color:#ddd6fe}
.lau-fp-q{color:#475569;background:#f1f5f9;border-color:#e2e8f0}
.lau-pat-fi{font-weight:800;font-size:1.02rem;color:#0f172a;cursor:pointer;display:flex;align-items:center;gap:6px}
.lau-pat-spk{font-size:.82rem;opacity:.5}
.lau-pat-fi:hover .lau-pat-spk{opacity:1}
.lau-pat-vi{font-size:.86rem;color:#64748b;margin-top:2px}
.lau-pat-note{margin-top:9px;padding-top:9px;border-top:1px dashed #e9eef5;font-size:.82rem;line-height:1.55;color:#475569}
.lau-pat-note b{color:#0f172a}
.lau-pat-para{margin-top:9px;display:flex;flex-wrap:wrap;gap:5px;align-items:center}
.lau-pat-para-lb{font-size:.72rem;font-weight:800;color:#6d28d9;background:#f5f3ff;padding:3px 8px;border-radius:7px}
.lau-pp{font-size:.78rem;font-weight:600;color:#334155;background:#fff;border:1px solid #e7edf4;border-radius:7px;padding:3px 8px;cursor:pointer}
.lau-pp:hover{border-color:#7c3aed;color:#6d28d9}

/* 4) tools */
.lau-tools{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.lau-tool{border:1px solid #e9eef5;border-radius:14px;padding:14px 15px;background:#fcfdff}
.lau-tool h3{margin:0 0 6px;font-size:.96rem;font-weight:800}
.lau-tool p{margin:0 0 8px;font-size:.86rem;color:#475569;line-height:1.5}
.lau-tool code{background:#eef2ff;color:#4338ca;padding:1px 6px;border-radius:6px;font-weight:700}
.lau-tbl{width:100%;border-collapse:collapse;font-size:.86rem}
.lau-tbl td{padding:5px 4px;border-bottom:1px solid #f1f5f9;vertical-align:top}
.lau-tbl td:first-child{font-weight:600;color:#0f172a}
.lau-tbl td:last-child{color:#94a3b8;text-align:right;font-size:.8rem}
.lau-qex{background:#f8fafc;border:1px solid #eef2f7;border-radius:10px;padding:8px 11px;font-weight:700;font-size:.92rem;cursor:pointer}
.lau-qex span{font-weight:500;color:#94a3b8;font-size:.82rem}

.lau-clickable{cursor:pointer}
.lau-clickable:hover{opacity:.78}

/* foot links */
.lau-foot{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:6px}
.lau-flink{text-decoration:none;background:#fff;border:1.5px solid #e2e8f0;border-radius:11px;padding:9px 14px;font-weight:700;font-size:.88rem;color:#334155}
.lau-flink:hover{border-color:#2563eb;color:#2563eb}

/* mobile */
@media(max-width:640px){
  .lau-wrap{padding:14px 12px 50px}
  .lau-h1{font-size:1.28rem}
  .lau-slots{gap:5px}
  .lau-slot{flex:1 1 30%;min-width:0;padding:8px 5px}
  .lau-slot-q{font-size:.82rem}.lau-slot-t{font-size:.68rem}.lau-slot-ex{font-size:.82rem}
  .lau-arrow{display:none}
  .lau-row{flex-direction:column;gap:6px}
  .lau-row-lb{flex:none;align-self:flex-start}
  .lau-out-fi{font-size:1.25rem}
  .lau-tools{grid-template-columns:1fr}
  .lau-pat-grid{grid-template-columns:1fr}
}