/* tictac — modern gorunum (T-6). Once minimal #board/.cell/#restart vardi,
   bu surumde genel sayfa duzeni, #lobi karti ve #oda-oyun/.oda-hucre
   tahtasi ayni tasarim diliyle genisletildi. Framework/CDN yok, duz CSS. */

:root {
  --renk-arkaplan: #eef2f7;
  --renk-panel: #ffffff;
  --renk-govde: #1f2937;
  --renk-ana: #4f46e5;
  --renk-ana-koyu: #4338ca;
  --renk-vurgu: #0891b2;
  --renk-kenar: #d8dee9;
  --golge-panel: 0 10px 25px rgba(31, 41, 55, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 32px 16px 64px;
  min-width: 400px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  background: var(--renk-arkaplan);
  color: var(--renk-govde);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
}

h1 {
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 16px;
  text-align: center;
  color: var(--renk-govde);
}

h2 {
  font-size: 20px;
  font-weight: 600;
  margin: 0 0 16px;
  color: var(--renk-govde);
}

hr {
  border: none;
  border-top: 1px solid var(--renk-kenar);
  margin: 32px 0;
}

#status {
  text-align: center;
  font-size: 16px;
  font-weight: 600;
  padding: 10px 16px;
  margin-bottom: 4px;
  background: var(--renk-panel);
  border-radius: 10px;
  box-shadow: var(--golge-panel);
}

#board {
  display: grid;
  grid-template-columns: repeat(3, 80px);
  grid-template-rows: repeat(3, 80px);
  gap: 6px;
  margin: 16px auto;
  padding: 12px;
  background: var(--renk-panel);
  border-radius: 14px;
  box-shadow: var(--golge-panel);
  justify-content: center;
}

.cell {
  border: none;
  border-radius: 8px;
  background: #f3f4f6;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: 700;
  cursor: pointer;
  user-select: none;
  color: var(--renk-ana);
  transition: background-color 0.15s ease, transform 0.1s ease;
}

.cell:hover {
  background: #e5e7eb;
  transform: translateY(-1px);
}

.cell:not(:empty) {
  cursor: default;
  background: #eef2ff;
}

#restart {
  display: block;
  margin: 4px auto 0;
  padding: 10px 22px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--renk-ana);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

#restart:hover {
  background: var(--renk-ana-koyu);
}

#restart:focus-visible {
  outline: 2px solid var(--renk-vurgu);
  outline-offset: 2px;
}

/* --- Çok oyunculu lobi --- */

#lobi {
  background: var(--renk-panel);
  border-radius: 14px;
  box-shadow: var(--golge-panel);
  padding: 24px;
  margin-bottom: 24px;
}

#lobi h2 {
  text-align: center;
}

#oda-olustur,
#oda-katil {
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--renk-ana);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

#oda-olustur {
  display: block;
  width: 100%;
  margin-bottom: 16px;
}

#oda-olustur:hover,
#oda-katil:hover {
  background: var(--renk-ana-koyu);
}

#oda-olustur:focus-visible,
#oda-katil:focus-visible,
#oda-kodu-input:focus-visible {
  outline: 2px solid var(--renk-vurgu);
  outline-offset: 2px;
}

#oda-katil-alani {
  display: flex;
  gap: 8px;
}

#oda-kodu-input {
  flex: 1;
  padding: 10px 12px;
  font-size: 15px;
  border: 1px solid var(--renk-kenar);
  border-radius: 8px;
  background: #f9fafb;
  color: var(--renk-govde);
}

#oda-kodu-input:focus {
  border-color: var(--renk-ana);
  background: #fff;
}

#oda-katil {
  flex-shrink: 0;
  background: var(--renk-vurgu);
}

#oda-katil:hover {
  background: #0e7490;
}

#lobi-mesaj {
  margin: 14px 0 0;
  font-size: 14px;
  color: #6b7280;
  text-align: center;
  min-height: 1.4em;
}

/* --- Oda içi oyun ekranı --- */

#oda-oyun {
  background: var(--renk-panel);
  border-radius: 14px;
  box-shadow: var(--golge-panel);
  padding: 24px;
}

#oda-bilgi {
  text-align: center;
  font-size: 14px;
  color: #6b7280;
  margin-bottom: 8px;
}

#oda-kodu-goster,
#oda-oyuncu-goster {
  font-weight: 700;
  color: var(--renk-ana);
}

#oda-status {
  text-align: center;
  font-size: 16px;
  font-weight: 600;
  padding: 10px 16px;
  margin-bottom: 16px;
  background: #f3f4f6;
  border-radius: 10px;
}

#oda-board {
  display: grid;
  grid-template-columns: repeat(3, 80px);
  grid-template-rows: repeat(3, 80px);
  gap: 6px;
  margin: 0 auto;
  justify-content: center;
}

.oda-hucre {
  border: none;
  border-radius: 8px;
  background: #f3f4f6;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: 700;
  cursor: pointer;
  user-select: none;
  color: var(--renk-vurgu);
  transition: background-color 0.15s ease, transform 0.1s ease;
}

.oda-hucre:hover {
  background: #e5e7eb;
  transform: translateY(-1px);
}

.oda-hucre:not(:empty) {
  cursor: default;
  background: #ecfeff;
}