*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg:#0f0f0f; --bg2:#1a1a1a; --bg3:#242424; --border:#2e2e2e;
  --text:#e8e6df; --muted:#6b6b6b;
  --green:#538d4e; --green-l:#6aaf63;
  --yellow:#b59f3b; --absent:#3a3a3c;
  --key-bg:#2e2e2e; --radius:6px;
  --font-mono:'Space Mono',monospace; --font-ui:'Syne',sans-serif;
  --c-grupos:#60a5fa; --c-ranking:#f59e0b; --c-perfil:#a78bfa; --c-admin:#f87171;
}
html,body { height:100%; background:var(--bg); color:var(--text); font-family:var(--font-ui); overscroll-behavior:none; -webkit-tap-highlight-color:transparent; }
body { display:flex; flex-direction:column; align-items:center; min-height:100dvh; }

/* Header */
header { width:100%; max-width:500px; display:flex; align-items:center; justify-content:space-between; padding:14px 16px 10px; border-bottom:1px solid var(--border); }
.logo { font-family:var(--font-mono); font-size:20px; font-weight:700; letter-spacing:3px; }
.logo .g { color:var(--green-l); }
.logo .w { color:var(--text); }
.header-btns { display:flex; gap:8px; }
.icon-btn { width:36px; height:36px; background:var(--bg3); border:1px solid var(--border); border-radius:var(--radius); cursor:pointer; display:flex; align-items:center; justify-content:center; transition:background .15s,transform .1s; padding:0; }
.icon-btn:hover  { background:var(--border); }
.icon-btn:active { transform:scale(.91); }
.icon-btn.grupos  svg { stroke:var(--c-grupos); }
.icon-btn.ranking svg { stroke:var(--c-ranking); }
.icon-btn.perfil  svg { stroke:var(--c-perfil); }
.icon-btn.admin   svg { stroke:var(--c-admin); }

/* Toast */
#toast { position:fixed; top:70px; left:50%; transform:translateX(-50%); background:var(--text); color:var(--bg); font-family:var(--font-mono); font-size:13px; font-weight:700; padding:10px 20px; border-radius:30px; opacity:0; pointer-events:none; transition:opacity .2s; z-index:999; white-space:nowrap; }
#toast.show { opacity:1; }

/* Main */
main { flex:1; display:flex; flex-direction:column; align-items:center; justify-content:space-between; width:100%; max-width:500px; padding:10px 10px 8px; gap:8px; }

/* Tablero */
#tablero { display:grid; grid-template-rows:repeat(6,1fr); gap:5px; width:min(310px,85vw); height:min(372px,102vw); flex-shrink:0; }
.fila { display:grid; grid-template-columns:repeat(5,1fr); gap:5px; }
.celda { border:2px solid var(--border); border-radius:4px; display:flex; align-items:center; justify-content:center; font-family:var(--font-mono); font-size:clamp(18px,5vw,26px); font-weight:700; text-transform:uppercase; color:var(--text); transition:border-color .1s; user-select:none; }
.celda.tiene-letra { border-color:#555; animation:pop .1s ease; }
.celda.correcto { background:var(--green);  border-color:var(--green);  color:#fff; }
.celda.presente { background:var(--yellow); border-color:var(--yellow); color:#fff; }
.celda.ausente  { background:var(--absent); border-color:var(--absent); color:#fff; }
@keyframes pop   { 0%{transform:scale(1)} 50%{transform:scale(1.1)} 100%{transform:scale(1)} }
@keyframes flip  { 0%{transform:rotateX(0)} 50%{transform:rotateX(90deg);background:var(--bg3)} 100%{transform:rotateX(0)} }
@keyframes shake { 0%,100%{transform:translateX(0)} 15%{transform:translateX(-6px)} 30%{transform:translateX(6px)} 45%{transform:translateX(-5px)} 60%{transform:translateX(5px)} 75%{transform:translateX(-3px)} 90%{transform:translateX(3px)} }
.shake { animation:shake .4s ease; }

/* Teclado */
#teclado { width:100%; display:flex; flex-direction:column; gap:6px; padding:0 4px; }
.teclado-fila { display:flex; justify-content:center; gap:5px; }
.key { height:clamp(42px,10vw,56px); background:var(--key-bg); border:none; border-radius:var(--radius); color:var(--text); font-family:var(--font-mono); font-size:clamp(11px,3vw,14px); font-weight:700; cursor:pointer; display:flex; align-items:center; justify-content:center; flex:1; max-width:46px; transition:background .1s,transform .1s; user-select:none; -webkit-user-select:none; text-transform:uppercase; }
.key:active { transform:scale(.93); }
.key.wide { flex:1.6; max-width:66px; font-size:clamp(9px,2.5vw,12px); }
.key.correcto { background:var(--green);  color:#fff; }
.key.presente { background:var(--yellow); color:#fff; }
.key.ausente  { background:var(--absent); color:#888; }

/* Modales */
.overlay { position:fixed; inset:0; background:rgba(0,0,0,.78); backdrop-filter:blur(4px); display:flex; align-items:center; justify-content:center; z-index:100; opacity:0; pointer-events:none; transition:opacity .2s; padding:16px; }
.overlay.open { opacity:1; pointer-events:all; }
.modal { background:var(--bg2); border:1px solid var(--border); border-radius:14px; padding:28px 24px; width:100%; max-width:380px; display:flex; flex-direction:column; gap:18px; transform:translateY(20px); transition:transform .2s; position:relative; }
.overlay.open .modal { transform:translateY(0); }
.modal h2 { font-family:var(--font-mono); font-size:18px; font-weight:700; letter-spacing:4px; text-align:center; text-transform:uppercase; }
.modal-close { position:absolute; top:12px; right:12px; width:32px; height:32px; background:var(--bg3); border:1px solid var(--border); border-radius:50%; cursor:pointer; display:flex; align-items:center; justify-content:center; font-size:18px; color:var(--muted); line-height:1; transition:color .15s; }
.modal-close:hover { color:var(--text); }

/* Inputs */
.field { display:flex; flex-direction:column; gap:6px; }
.field label { font-size:11px; color:var(--muted); letter-spacing:2px; text-transform:uppercase; font-family:var(--font-mono); }
.field input { background:var(--bg3); border:1px solid var(--border); border-radius:var(--radius); padding:11px 14px; color:var(--text); font-family:var(--font-mono); font-size:14px; outline:none; transition:border-color .15s; width:100%; }
.field input:focus { border-color:#555; }

/* Botones */
.btn { padding:12px 20px; border-radius:var(--radius); font-family:var(--font-mono); font-size:13px; font-weight:700; letter-spacing:2px; text-transform:uppercase; cursor:pointer; border:none; transition:opacity .15s,transform .1s; text-align:center; display:block; width:100%; }
.btn:active { transform:scale(.97); }
.btn-primary   { background:var(--green); color:#fff; }
.btn-primary:hover { opacity:.9; }
.btn-secondary { background:var(--bg3); color:var(--text); border:1px solid var(--border); }
.btn-secondary:hover { background:var(--border); }
.btn-danger    { background:#7f1d1d; color:#fca5a5; border:1px solid #991b1b; }
.btn-danger:hover { background:#991b1b; }
.btn-link { background:none; border:none; color:var(--muted); font-size:12px; font-family:var(--font-mono); cursor:pointer; text-decoration:underline; letter-spacing:1px; width:auto; display:inline; padding:0; }
.btn-link:hover { color:var(--text); }
.error-msg { color:#e05252; font-size:12px; font-family:var(--font-mono); min-height:16px; }

/* Tabs */
.tabs { display:flex; gap:4px; background:var(--bg3); border-radius:var(--radius); padding:4px; }
.tab { flex:1; padding:8px; border-radius:4px; cursor:pointer; font-family:var(--font-mono); font-size:11px; letter-spacing:2px; text-transform:uppercase; text-align:center; border:none; background:none; color:var(--muted); transition:background .15s,color .15s; }
.tab.active { background:var(--bg2); color:var(--text); border:1px solid var(--border); }

/* Ranking */
.ranking-list { display:flex; flex-direction:column; gap:8px; max-height:300px; overflow-y:auto; }
.ranking-item { display:flex; align-items:center; gap:12px; padding:10px 12px; background:var(--bg3); border-radius:var(--radius); font-family:var(--font-mono); font-size:13px; }
.rank-pos        { width:24px; text-align:center; font-size:11px; color:var(--muted); }
.rank-pos.gold   { color:#f5c842; }
.rank-pos.silver { color:#a0a0a0; }
.rank-pos.bronze { color:#cd7f32; }
.rank-name { flex:1; }
.rank-pts  { color:var(--green-l); font-weight:700; }
.rank-hoy  { font-size:11px; color:var(--muted); }

/* Resultado */
.result-box { text-align:center; }
.result-palabra { font-family:var(--font-mono); font-size:26px; font-weight:700; letter-spacing:8px; color:var(--green-l); margin:8px 0; }
.result-sub { color:var(--muted); font-size:13px; }
.stats-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:10px; }
.stat-item { background:var(--bg3); border-radius:var(--radius); padding:12px 8px; text-align:center; }
.stat-num  { font-family:var(--font-mono); font-size:22px; font-weight:700; }
.stat-lbl  { font-size:10px; color:var(--muted); margin-top:4px; }

/* Grupos */
.grupo-chip { display:flex; align-items:center; justify-content:space-between; padding:10px 14px; background:var(--bg3); border-radius:var(--radius); border:1px solid transparent; transition:border-color .15s; }
.grupo-chip:hover { border-color:var(--border); }
.grupo-codigo { font-family:var(--font-mono); font-size:11px; color:var(--muted); letter-spacing:2px; }

/* Countdown */
#countdown { font-family:var(--font-mono); font-size:22px; letter-spacing:4px; color:var(--green-l); text-align:center; }

/* Admin */
.admin-row { display:flex; align-items:center; justify-content:space-between; padding:12px 14px; background:var(--bg3); border-radius:var(--radius); border:1px solid var(--border); gap:12px; }
.admin-info { display:flex; flex-direction:column; gap:3px; flex:1; }
.admin-title { font-family:var(--font-mono); font-size:13px; font-weight:700; }
.admin-desc  { font-size:11px; color:var(--muted); }
.admin-btn   { padding:8px 14px; border-radius:var(--radius); font-family:var(--font-mono); font-size:11px; font-weight:700; letter-spacing:1px; cursor:pointer; border:none; white-space:nowrap; flex-shrink:0; }
.admin-btn.danger { background:#7f1d1d; color:#fca5a5; border:1px solid #991b1b; }
.admin-btn.danger:hover { background:#991b1b; }
.confirm-box { background:var(--bg); border:1px solid #991b1b; border-radius:var(--radius); padding:14px; display:flex; flex-direction:column; gap:10px; }
.confirm-box p { font-family:var(--font-mono); font-size:12px; color:#fca5a5; }
.confirm-btns { display:flex; gap:8px; }
.confirm-btns button { flex:1; padding:10px; border-radius:var(--radius); font-family:var(--font-mono); font-size:12px; font-weight:700; cursor:pointer; border:none; }
.confirm-yes { background:#991b1b; color:#fca5a5; }
.confirm-no  { background:var(--bg3); color:var(--muted); border:1px solid var(--border) !important; }

/* Scrollbar */
::-webkit-scrollbar { width:4px; }
::-webkit-scrollbar-thumb { background:var(--border); border-radius:2px; }