/* VAR ARENA — sol menülü oyun portalı + bağımsız oyun ekranı. */
:root {
  --arena-bg: #0a0e1a;
  --arena-panel: rgba(22, 30, 48, 0.85);
  --arena-line: rgba(120, 140, 180, 0.18);
  --arena-gold: #fcd34d;
  --arena-txt: #f1f5f9;
  --arena-muted: #8294b5;
}
* { box-sizing: border-box; }
.arena-page-body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  background: var(--arena-bg);
  color: var(--arena-txt);
  min-height: 100vh;
}
.arena-shell { display: flex; min-height: 100vh; }

/* SIDEBAR — sadece 2 ana buton */
.arena-sidebar {
  width: 232px; flex-shrink: 0; background: var(--arena-panel);
  border-right: 1px solid var(--arena-line);
  display: flex; flex-direction: column; padding: 18px 14px; gap: 22px;
}
.arena-brand { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 1.05rem; }
.arena-brand-icn { font-size: 1.3rem; filter: drop-shadow(0 0 8px rgba(252, 211, 77, 0.5)); }
.arena-brand-text {
  background: linear-gradient(90deg, #fcd34d, #fb923c);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.arena-nav { display: flex; flex-direction: column; gap: 10px; flex: 1; }
.arena-nav-btn {
  display: flex; align-items: center; gap: 9px;
  background: rgba(120, 140, 180, 0.08); border: 1px solid var(--arena-line);
  color: var(--arena-txt); border-radius: 13px; padding: 15px 14px;
  font-size: 1rem; font-weight: 700; cursor: pointer; text-align: left;
  transition: background 0.15s, border-color 0.15s;
}
.arena-nav-btn:hover { background: rgba(120, 140, 180, 0.16); }
.arena-nav-btn.aktif { background: rgba(252, 211, 77, 0.14); border-color: rgba(252, 211, 77, 0.45); color: var(--arena-gold); }
.arena-portal-link { color: var(--arena-muted); font-size: 0.82rem; text-decoration: none; padding: 6px; }
.arena-portal-link:hover { color: var(--arena-txt); }

/* MAIN */
.arena-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.arena-topbar {
  display: flex; align-items: center; gap: 12px; padding: 14px 18px;
  background: var(--arena-panel); border-bottom: 1px solid var(--arena-line);
}
.arena-menu-toggle {
  display: none; background: transparent; border: 1px solid var(--arena-line);
  color: var(--arena-txt); border-radius: 9px; padding: 5px 10px; font-size: 1.1rem; cursor: pointer;
}
.arena-baslik { font-weight: 800; font-size: 1.05rem; color: var(--arena-gold); }
.arena-panel { flex: 1; min-height: 0; overflow-y: auto; padding: 22px; }
.arena-oyun-ipucu {
  margin: 0 0 16px; padding: 12px 14px; border-radius: 12px;
  border: 1px solid var(--arena-line); background: rgba(96, 165, 250, 0.08);
  font-size: 0.84rem; color: var(--arena-muted); line-height: 1.45;
}
.arena-oyun-ipucu strong { color: var(--arena-txt); }
.arena-oyun-ipucu em { color: var(--arena-gold); font-style: normal; font-weight: 700; }

/* OYUN KARTLARI (eğitim kartı stili) */
.arena-card-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px;
}
.arena-card {
  display: flex; align-items: center; gap: 14px; text-align: left; cursor: pointer;
  background: var(--arena-panel); border: 1px solid var(--arena-line); border-radius: 16px;
  padding: 18px; color: var(--arena-txt); transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.arena-card:hover { transform: translateY(-2px); border-color: rgba(252, 211, 77, 0.45); box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35); }
.arena-card:active { transform: scale(0.98); }
.arena-card-icn {
  font-size: 2rem; width: 56px; height: 56px; flex-shrink: 0; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(150deg, rgba(252, 211, 77, 0.18), rgba(96, 165, 250, 0.12));
}
.arena-card-ad { font-weight: 800; font-size: 1.05rem; margin-bottom: 3px; }
.arena-card-desc { font-size: 0.82rem; color: var(--arena-muted); line-height: 1.45; }

/* Kapak görselli kart (VAR BİLİG): görsel üstte tam-genişlik (4:3), metin altta */
.arena-card--kapakli { flex-direction: column; align-items: stretch; gap: 0; padding: 0; overflow: hidden; }
.arena-card-kapak { display: block; width: 100%; aspect-ratio: 600 / 446; overflow: hidden; background: #0b1020; }
.arena-card-kapak img { width: 100%; height: 100%; object-fit: cover; display: block; }
.arena-card--kapakli .arena-card-body { padding: 14px 18px 18px; }
.arena-card-rozet {
  margin-top: 7px; display: inline-block; font-size: 0.7rem; font-weight: 700;
  color: var(--arena-gold); background: rgba(252, 211, 77, 0.12);
  border: 1px solid rgba(252, 211, 77, 0.3); border-radius: 20px; padding: 2px 9px;
}

/* yakında / boş */
.arena-hos { margin: 40px auto; text-align: center; max-width: 420px; }
.arena-hos-icn { font-size: 3rem; margin-bottom: 10px; }
.arena-hos h1 {
  font-size: 1.3rem; margin: 0 0 8px;
  background: linear-gradient(90deg, #fcd34d, #fb923c);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.arena-hos p { color: var(--arena-muted); font-size: 0.9rem; margin: 0; }
.arena-hos b { color: var(--arena-gold); }

/* BAĞIMSIZ OYUN EKRANI (full overlay) */
.arena-game-screen { position: fixed; inset: 0; z-index: 50; background: var(--arena-bg); display: flex; flex-direction: column; }
.arena-game-screen[hidden] { display: none; }
.arena-game-back {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  background: rgba(10, 14, 26, 0.82); border: 1px solid var(--arena-line); color: var(--arena-txt);
  border-radius: 10px; padding: 8px 14px; font-size: 0.85rem; font-weight: 700; cursor: pointer;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.arena-game-back:hover { border-color: rgba(252, 211, 77, 0.5); color: var(--arena-gold); }
.arena-game-frame { flex: 1; width: 100%; border: none; background: var(--arena-bg); }

/* MOBİL */
@media (max-width: 720px) {
  .arena-menu-toggle { display: inline-block; }
  .arena-sidebar {
    position: fixed; inset: 0 auto 0 0; z-index: 30; transform: translateX(-100%);
    transition: transform 0.2s; box-shadow: 0 0 40px rgba(0, 0, 0, 0.5);
  }
  .arena-menu-acik .arena-sidebar { transform: translateX(0); }
  .arena-game-back { top: 8px; left: 8px; padding: 7px 12px; }
}