/* ==========================================================================
   PlayHub – gemeinsame Basis für Hub und alle Spiele
   Farben, Layout-Gerüst, Bausteine (Leiste, Dialog, Buttons, Segmente …)
   ========================================================================== */
:root{
  --bg:#0f1420;--panel:#171e2e;--panel2:#1f2840;--line:#2c3856;--text:#e8ecf6;--mute:#8d99b8;
  --accent:#5b8cff;--accent2:#7aa2ff;--ok:#38d39f;--bad:#ff5d6c;--warn:#ffb84d;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;background:radial-gradient(1200px 700px at 50% -10%,#1b2540,var(--bg));color:var(--text);
  font-family:Inter,"Segoe UI",system-ui,-apple-system,Roboto,sans-serif;user-select:none;-webkit-user-select:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none;touch-action:manipulation}
a{color:inherit;text-decoration:none}
:focus{outline:none}
:focus-visible{outline:2px solid var(--accent2);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.hidden{display:none!important}
.ltr{direction:ltr}

/* ---------- Gerüst ---------- */
#app{max-width:var(--app-w,520px);margin:0 auto;height:100%;position:relative;overflow:hidden}
@supports (height:100dvh){#app{height:100dvh}}
.screen{position:absolute;inset:0;padding:58px 18px 20px;display:none;flex-direction:column;overflow-y:auto}
.screen.active{display:flex;animation:fade .25s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
/* Scroll-Leiste ausblenden (Scrollen bleibt möglich) */
html,body,.screen{scrollbar-width:none;-ms-overflow-style:none}
.screen::-webkit-scrollbar,body::-webkit-scrollbar{display:none;width:0;height:0}

/* ---------- Menü-Kopf ---------- */
.logo{text-align:center;margin:3vh 0 2.5vh}
h1{margin:0;font-size:40px;letter-spacing:1px;font-weight:800}
.sub{color:var(--mute);margin:6px 0 0}

/* ---------- Leiste mit Zurück-Knopf ---------- */
.bar{display:flex;align-items:center;gap:8px;margin-bottom:14px}
.bar h2{margin:0;font-size:20px;flex:1;text-align:center}
.icon{width:42px;height:42px;border-radius:12px;background:var(--panel);border:1px solid var(--line);font-size:26px;line-height:1;
  display:inline-flex;align-items:center;justify-content:center;flex:none}
.icon:hover{background:var(--panel2)}
.icon svg{width:22px;height:22px}
.spacer{width:42px;flex:none}
.title{flex:1;text-align:center;display:flex;flex-direction:column}
.title small{color:var(--mute);font-variant-numeric:tabular-nums;font-size:14px}
html[dir=rtl] .icon.flip{transform:scaleX(-1)}

/* ---------- Buttons ---------- */
.ghost{margin-top:12px;padding:14px;border-radius:12px;border:1px dashed var(--line);color:var(--accent2);text-align:center}
.ghost:hover{background:var(--panel)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 18px;border-radius:12px;
  background:var(--panel2);border:1px solid var(--line);font-weight:600;transition:.15s}
.btn:hover{border-color:var(--accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:#6c9aff}
.btn:disabled,.btn.off{opacity:.4;pointer-events:none}
.btn svg{width:18px;height:18px}

/* Große Menü-Auswahl (wie die Sudoku-Schwierigkeiten) */
.opt-list{display:flex;flex-direction:column;gap:12px;margin:10px 0 6px}
.opt{display:flex;align-items:center;gap:14px;padding:15px 18px;border-radius:16px;background:var(--panel);border:1px solid var(--line);
  text-align:start;transition:.15s;width:100%}
.opt:hover{transform:translateY(-2px);border-color:var(--accent);background:var(--panel2)}
.opt .dot{width:14px;height:14px;border-radius:50%;flex:none}
.opt .dot.easy{background:var(--ok)}.opt .dot.medium{background:var(--warn)}.opt .dot.hard{background:var(--bad)}
.opt .ico{width:26px;height:26px;flex:none;color:var(--accent2)}
.opt .ico svg{width:26px;height:26px}
.opt .otxt{flex:1;display:flex;flex-direction:column;min-width:0}
.opt .otxt b{font-size:19px}
.opt .otxt small{color:var(--mute);margin-top:2px}
.opt .oinfo{color:var(--mute);font-size:14px;font-variant-numeric:tabular-nums}
.label{color:var(--mute);font-size:13px;margin:16px 2px 8px;letter-spacing:.3px}

/* Segment-Schalter (z. B. Farbe wählen, Spielfeldgröße) */
.seg{display:flex;gap:6px;padding:4px;border-radius:14px;background:var(--panel);border:1px solid var(--line)}
.seg button{flex:1;min-height:40px;padding:8px 6px;border-radius:10px;color:var(--mute);font-weight:600;font-size:14px;transition:.15s}
.seg button:hover{color:var(--text)}
.seg button.on{background:var(--accent);color:#fff}

/* Kleine Kennzahl-Kacheln (Punkte, Rekord, Zeit …) */
.stats{display:flex;gap:8px}
.stat{flex:1;min-width:0;padding:8px 10px;border-radius:12px;background:var(--panel);border:1px solid var(--line);text-align:center}
.stat small{display:block;color:var(--mute);font-size:11px;letter-spacing:.5px;text-transform:uppercase}
.stat b{display:block;font-size:20px;font-variant-numeric:tabular-nums;line-height:1.25}

/* Werkzeug-Leiste (Icon + Beschriftung) */
.toolbar{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:8px;width:100%}
.toolbar button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;min-height:56px;padding:8px 2px;border-radius:12px;
  background:var(--panel);border:1px solid var(--line);font-size:12px;color:var(--mute);transition:.15s}
.toolbar button svg{width:22px;height:22px;color:var(--text)}
.toolbar button:hover{background:var(--panel2)}
.toolbar button.on{border-color:var(--accent);color:var(--accent2)}
.toolbar button:disabled{opacity:.35;pointer-events:none}

/* ---------- Dialog ---------- */
.modal{position:absolute;inset:0;background:rgba(5,8,16,.75);display:flex;align-items:center;justify-content:center;padding:24px;z-index:10;backdrop-filter:blur(4px)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:28px 24px;text-align:center;width:100%;max-width:360px;animation:fade .25s}
.m-icon{font-size:48px;line-height:1.1}
.m-icon svg{width:52px;height:52px}
.card h3{margin:8px 0 4px;font-size:24px}
.card p{color:var(--mute);margin:0 0 20px}
.m-actions{display:flex;flex-direction:column;gap:10px}
.m-actions button{padding:14px;border-radius:12px;background:var(--panel2);border:1px solid var(--line);font-weight:600}
.m-actions button:hover{border-color:var(--accent)}
.m-actions button.primary{background:var(--accent);border-color:var(--accent);color:#fff}

/* Kurze Meldung */
.toast{position:absolute;left:50%;bottom:28px;transform:translate(-50%,16px);opacity:0;pointer-events:none;z-index:12;
  background:#0b0f19;border:1px solid var(--line);color:var(--text);padding:10px 16px;border-radius:999px;font-size:14px;transition:.25s;max-width:90%;text-align:center}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- Kopfzeile: Sprachen + Zurück zur Plattform ---------- */
#langbar{position:absolute;top:10px;left:0;right:0;display:flex;justify-content:center;gap:6px;z-index:5;direction:ltr}
#langbar button,#langbar .homebtn{position:relative;padding:6px 12px;border-radius:999px;background:var(--panel);border:1px solid var(--line);font-size:13px;color:var(--mute)}
#langbar button::before,#langbar .homebtn::before{content:"";position:absolute;inset:-6px -2px}
#langbar button:hover,#langbar .homebtn:hover{background:var(--panel2);color:var(--text)}
#langbar button.on{background:var(--accent);border-color:var(--accent);color:#fff}
#langbar .homebtn{position:absolute;top:0;left:12px;display:inline-flex;align-items:center;gap:6px;padding:6px 10px}
#langbar .homebtn svg{width:16px;height:16px}
#langbar .homebtn span{display:none}
html[dir=rtl] #langbar .homebtn{left:auto;right:12px}
@media (min-width:480px){#langbar .homebtn span{display:inline}}
@media (max-width:360px){#langbar button{padding:6px 9px;font-size:12px}#langbar .homebtn{left:6px;padding:6px 8px}}

/* ---------- Arabisch / RTL ---------- */
html[dir=rtl] .stat small,html[dir=rtl] .label,html[dir=rtl] h1{letter-spacing:0;text-transform:none}
html[dir=rtl] body{font-family:"Segoe UI",Tahoma,"Noto Naskh Arabic",system-ui,sans-serif}

/* ---------- Bewegung reduzieren ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}