:root{
  --bg: #0b0d17;
  --bg2: #12162a;
  --panel: #161b30;
  --border: rgba(140,160,255,0.16);
  --text: #eef0ff;
  --text-dim: #9aa2c7;
  --accent: #7c5cff;
  --accent2: #22d3ee;
  --good: #2ecc71;
  --bad: #ff5d7a;
  --radius: 16px;
}
*{ box-sizing: border-box; }
html,body{ margin:0; padding:0; }
body{
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(124,92,255,0.20), transparent 60%),
    radial-gradient(1000px 500px at 100% 0%, rgba(34,211,238,0.14), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  min-height: 100vh;
}
a{ color: inherit; text-decoration: none; }

.topbar{
  display:flex; align-items:center; justify-content:space-between;
  padding: 16px 28px;
  border-bottom: 1px solid var(--border);
  background: rgba(11,13,23,0.7);
  backdrop-filter: blur(6px);
  position: sticky; top:0; z-index: 10;
}
.brand{
  display:flex; align-items:center; gap:10px;
  font-weight: 800; font-size: 18px; letter-spacing: 0.3px;
}
.brand .dot{
  width:10px; height:10px; border-radius: 3px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 14px rgba(124,92,255,0.7);
}
.back-link{
  font-size: 13px; color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 7px 14px; border-radius: 999px;
  display:inline-flex; align-items:center; gap:6px;
  transition: border-color .15s, color .15s;
}
.back-link:hover{ border-color: var(--accent2); color: var(--text); }

.wrap{ max-width: 1080px; margin: 0 auto; padding: 34px 22px 70px; }

.hero{ text-align:center; margin-bottom: 34px; }
.hero h1{
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 0 0 10px;
  background: linear-gradient(90deg, #fff, var(--accent2));
  -webkit-background-clip: text; background-clip:text; color: transparent;
  font-weight: 900;
}
.hero p{ color: var(--text-dim); margin:0; font-size: 15px; }

.game-grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
  margin-top: 28px;
}
.game-card{
  background: linear-gradient(180deg, var(--panel), var(--bg2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  display:flex; flex-direction:column; gap:10px;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
  position: relative; overflow: hidden;
}
.game-card:hover{
  transform: translateY(-4px);
  border-color: var(--accent2);
  box-shadow: 0 14px 34px rgba(34,211,238,0.12);
}
.game-card .icon{ font-size: 40px; line-height:1; }
.game-card h3{ margin: 4px 0 0; font-size: 18px; }
.game-card p{ margin:0; color: var(--text-dim); font-size: 13px; line-height:1.5; }
.game-card .play{
  margin-top: 8px; align-self: flex-start;
  font-size: 12px; font-weight:700; letter-spacing: .5px; text-transform: uppercase;
  color: var(--accent2);
}

.section-title{
  font-size: 13px; text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--text-dim); margin: 40px 0 14px;
}

.player-name-row{
  display:flex; gap:10px; align-items:center; flex-wrap:wrap;
  margin-bottom: 18px;
}
.player-name-row label{ font-size:13px; color: var(--text-dim); }
.player-name-row input[type=text]{
  background: var(--panel); border:1px solid var(--border); border-radius:10px;
  color: var(--text); padding: 8px 12px; font-size: 14px; width: 170px;
}

.btn{
  display:inline-flex; align-items:center; gap:8px;
  background: linear-gradient(135deg, var(--accent), #5a3fe0);
  color:#fff; border:none; border-radius: 10px;
  padding: 10px 18px; font-size: 14px; font-weight: 700;
  cursor:pointer; transition: filter .15s, transform .15s;
}
.btn:hover{ filter: brightness(1.12); transform: translateY(-1px); }
.btn.ghost{
  background: transparent; border:1px solid var(--border); color: var(--text);
}
.btn.ghost:hover{ border-color: var(--accent2); }

.game-shell{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.status-bar{
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px;
  margin-bottom: 18px;
}
.status-msg{ font-size: 15px; font-weight: 600; }
.status-msg .hl{ color: var(--accent2); }

.lb-table{ width:100%; border-collapse: collapse; font-size: 13.5px; }
.lb-table th, .lb-table td{ text-align:left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
.lb-table th{ color: var(--text-dim); font-weight:600; font-size:12px; text-transform:uppercase; letter-spacing:.5px; }
.lb-table tr:first-child td{ color: #ffd977; font-weight:700; }
.lb-empty{ color: var(--text-dim); font-size: 13.5px; }

footer.site-footer{
  text-align:center; color: var(--text-dim); font-size:12px; padding: 30px 0 10px;
}

/* --- mod secici (Yerel / Bilgisayar / Online) --- */
.mode-tabs{ display:flex; gap:8px; flex-wrap:wrap; margin-bottom: 18px; }
.mode-tab{
  padding: 9px 16px; border-radius: 10px; font-size: 13.5px; font-weight:600;
  background: var(--bg2); border:1px solid var(--border); color: var(--text-dim); cursor:pointer;
  transition: border-color .15s, color .15s, background .15s;
}
.mode-tab.active{ background: linear-gradient(135deg, var(--accent), #5a3fe0); color:#fff; border-color: transparent; }
.mode-tab:hover:not(.active){ border-color: var(--accent2); color: var(--text); }

.ai-level-row{ display:flex; align-items:center; gap:10px; margin-bottom:14px; font-size:13px; color:var(--text-dim); }
.ai-level-row select{
  background: var(--bg2); color: var(--text); border:1px solid var(--border); border-radius:8px;
  padding: 6px 10px; font-size: 13px;
}

/* --- online oda paneli --- */
.room-panel{
  background: var(--bg2); border:1px solid var(--border); border-radius: 14px;
  padding: 18px 20px; margin-bottom: 18px;
}
.room-panel h4{ margin: 0 0 12px; font-size: 14px; }
.room-row{ display:flex; gap:10px; align-items:center; flex-wrap:wrap; margin-bottom:10px; }
.room-code-display{
  font-family: 'Courier New', monospace; font-size: 22px; font-weight:800; letter-spacing:4px;
  background: var(--panel); border:1px dashed var(--accent2); border-radius:10px;
  padding: 8px 18px; color: var(--accent2);
}
.room-link-box{
  display:flex; gap:8px; align-items:center;
  background: var(--panel); border:1px solid var(--border); border-radius:8px;
  padding: 6px 10px; font-size:12.5px; color: var(--text-dim); max-width: 100%;
  overflow-x:auto; white-space:nowrap;
}
.room-status-pill{
  font-size:12px; padding: 4px 12px; border-radius:999px; font-weight:700;
  background: rgba(255,159,90,0.15); color:#ff9f5a;
}
.room-status-pill.live{ background: rgba(46,204,113,0.15); color: var(--good); }
.you-tag{ font-size:11px; color: var(--accent2); font-weight:700; margin-left:6px; }