/* ===== PUZZLE PAGE CSS ===== */

.puzzle-hero{border-bottom:1px solid var(--border);background:var(--bg2);}
.puzzle-hero-inner{max-width:1240px;margin:0 auto;padding:56px 32px;display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}

/* BOARD SIDE */
.puzzle-board-side{display:flex;flex-direction:column;align-items:center;gap:16px;}
.puzzle-board-wrap{position:relative;width:100%;max-width:500px;}
.puzzle-wrong-flash{position:absolute;inset:0;border-radius:10px;background:rgba(120,20,20,.85);backdrop-filter:blur(2px);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:28px;cursor:pointer;animation:flashIn .2s ease both;z-index:10;}
.puzzle-wrong-flash h3{font-family:var(--font-head);font-weight:700;font-size:22px;margin-bottom:10px;}
.puzzle-wrong-flash p{font-size:14px;color:#ffd9d9;line-height:1.5;max-width:280px;}
.puzzle-wrong-hint-btn{margin-top:16px;padding:8px 16px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:6px;color:#fff;font-size:13px;cursor:pointer;}
.puzzle-hint-reveal{margin-top:14px;font-size:13px;color:var(--accent);text-align:center;font-weight:600;}

/* INFO SIDE */
.puzzle-info-side{}
.puzzle-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 13px;border:1px solid var(--border3);border-radius:100px;font-size:12px;color:var(--text4);letter-spacing:.04em;margin-bottom:20px;}
.puzzle-badge-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}
.puzzle-title{font-family:var(--font-head);font-weight:700;font-size:44px;line-height:1.05;letter-spacing:-.03em;margin:0 0 16px;}
.puzzle-desc{font-size:17px;line-height:1.65;color:var(--text3);margin:0 0 28px;}
.puzzle-turn{display:flex;align-items:center;gap:12px;margin-bottom:24px;}
.puzzle-turn-dot{width:14px;height:14px;border-radius:50%;}
.puzzle-turn-dot.white{background:#f0d9b5;border:2px solid #ccc;}
.puzzle-turn-dot.black{background:#333;border:2px solid #555;}
.puzzle-turn-label{font-weight:600;font-size:15px;}
.puzzle-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:24px;}
.puzzle-solved-banner{display:flex;align-items:center;gap:12px;padding:14px 18px;background:rgba(74,222,128,.08);border:1px solid rgba(74,222,128,.25);border-radius:10px;margin-bottom:20px;}
.puzzle-solved-icon{font-size:22px;}
.puzzle-solved-txt{font-weight:700;color:var(--accent);font-size:15px;}

/* CONCEPT */
.puzzle-concept{border:1px solid var(--border3);border-radius:14px;padding:24px;background:var(--bg4);}
.puzzle-concept-label{font-size:11px;color:var(--text5);letter-spacing:.1em;text-transform:uppercase;margin-bottom:8px;}
.puzzle-concept-name{font-family:var(--font-head);font-weight:700;font-size:24px;color:var(--accent);margin-bottom:12px;}
.puzzle-concept-text{font-size:15px;line-height:1.65;color:#bdbdbd;margin:0 0 18px;}
.puzzle-concept-link{display:inline-flex;align-items:center;gap:6px;color:#fff;font-weight:600;font-size:14px;text-decoration:none;transition:opacity .2s;}
.puzzle-concept-link:hover{opacity:.7;}

/* ARCHIVE */
.puzzle-archive{max-width:1240px;margin:0 auto;padding:64px 32px 100px;}
.puzzle-archive-title{font-family:var(--font-head);font-weight:700;font-size:32px;letter-spacing:-.03em;margin:0 0 32px;}
.puzzle-archive-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px;}
.puzzle-archive-card{border:1px solid var(--border2);border-radius:14px;padding:22px;background:var(--bg3);cursor:pointer;transition:border-color .2s,transform .2s;display:flex;flex-direction:column;gap:10px;}
.puzzle-archive-card:hover{border-color:#383838;transform:translateY(-3px);}
.puzzle-archive-card.solved{border-color:rgba(74,222,128,.3);}
.puzzle-archive-card-header{display:flex;align-items:center;justify-content:space-between;}
.puzzle-archive-num{font-family:var(--font-head);font-weight:700;font-size:20px;}
.puzzle-archive-solved-badge{width:22px;height:22px;border-radius:50%;background:var(--accent);display:flex;align-items:center;justify-content:center;font-size:12px;}
.puzzle-archive-date{font-size:12px;color:var(--text5);}
.puzzle-archive-type{font-size:13px;font-weight:600;color:var(--text3);}
.puzzle-archive-diff{display:inline-block;padding:3px 9px;border-radius:100px;font-size:11px;font-weight:600;letter-spacing:.04em;}
.puzzle-archive-diff.iniciante{background:rgba(74,222,128,.12);color:var(--accent);}
.puzzle-archive-diff.intermediario{background:rgba(224,179,65,.12);color:#e0b341;}
.puzzle-archive-diff.avancado{background:rgba(91,141,239,.12);color:#5b8def;}

@media(max-width:900px){
  .puzzle-hero-inner{grid-template-columns:1fr;gap:36px;}
  .puzzle-title{font-size:32px;}
}