/* ============================================================
   UNO ONLINE — Futuristic Theme
   ============================================================ */
:root {
  --uno-red: #ff3b47;
  --uno-yellow: #ffcc00;
  --uno-green: #00c853;
  --uno-blue: #2979ff;
  --uno-red-glow: rgba(255,59,71,.6);
  --uno-yellow-glow: rgba(255,204,0,.6);
  --uno-green-glow: rgba(0,200,83,.6);
  --uno-blue-glow: rgba(41,121,255,.6);

  --bg-0: #05060f;
  --bg-1: #0a0b1e;
  --bg-2: #12132e;
  --panel: rgba(20,22,48,0.72);
  --panel-border: rgba(120,140,255,0.18);
  --text: #eef1ff;
  --text-dim: #9aa0c8;
  --accent: #7c4dff;
  --accent-2: #00e5ff;
  --neon: #b388ff;
  --danger: #ff4569;
  --ok: #00e676;
  --radius: 18px;
  --shadow: 0 8px 40px rgba(0,0,0,.45);
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
html, body { height: 100%; }
body {
  font-family: 'Noto Sans JP', system-ui, sans-serif;
  background: radial-gradient(ellipse at top, var(--bg-2), var(--bg-0) 70%);
  color: var(--text);
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}
.font-tech { font-family: 'Orbitron', sans-serif; letter-spacing: .04em; }

/* ---------- Background FX ---------- */
#bg-fx { position: fixed; inset: 0; z-index: -1; overflow: hidden; }
.orb {
  position: absolute; border-radius: 50%; filter: blur(80px); opacity: .35;
  animation: float 18s ease-in-out infinite;
}
.orb1 { width: 480px; height: 480px; background: var(--accent); top: -120px; left: -80px; }
.orb2 { width: 400px; height: 400px; background: var(--accent-2); bottom: -100px; right: -60px; animation-delay: -6s; }
.orb3 { width: 360px; height: 360px; background: var(--uno-red); top: 40%; left: 55%; animation-delay: -11s; opacity:.22;}
@keyframes float {
  0%,100% { transform: translate(0,0) scale(1); }
  33% { transform: translate(60px,-40px) scale(1.1); }
  66% { transform: translate(-40px,50px) scale(.95); }
}
.grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(124,77,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124,77,255,.06) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

/* ---------- Layout ---------- */
#app { min-height: 100vh; display: flex; flex-direction: column; }
.screen { flex: 1; display: flex; flex-direction: column; animation: fadeIn .5s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(12px);} to { opacity:1; transform:none;} }

.container { width: 100%; max-width: 1180px; margin: 0 auto; padding: 20px; }

/* ---------- Brand / Logo ---------- */
.brand {
  display: flex; align-items: center; gap: 14px; justify-content: center;
  margin-bottom: 6px;
}
.logo-uno {
  font-family: 'Orbitron', sans-serif; font-weight: 900; font-size: clamp(48px, 12vw, 96px);
  line-height: 1; letter-spacing: .02em;
  background: linear-gradient(135deg, var(--uno-red) 0%, var(--uno-yellow) 33%, var(--uno-green) 66%, var(--uno-blue) 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 4px 24px rgba(124,77,255,.4));
  transform: rotate(-4deg);
  animation: logoPulse 3s ease-in-out infinite;
}
@keyframes logoPulse { 0%,100%{ filter: drop-shadow(0 4px 24px rgba(124,77,255,.4));} 50%{ filter: drop-shadow(0 6px 32px rgba(0,229,255,.55));} }
.logo-sub { text-align: center; color: var(--text-dim); font-size: 13px; letter-spacing: .32em; text-transform: uppercase; margin-bottom: 30px; }

/* ---------- Glass panel ---------- */
.panel {
  background: var(--panel);
  backdrop-filter: blur(16px) saturate(120%);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ---------- Buttons ---------- */
.btn {
  font-family: inherit; font-weight: 700; font-size: 15px;
  border: none; border-radius: 14px; padding: 14px 22px; cursor: pointer;
  color: #fff; position: relative; overflow: hidden;
  transition: transform .15s ease, box-shadow .2s ease, filter .2s ease;
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  user-select: none;
}
.btn:active { transform: scale(.96); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 6px 24px rgba(124,77,255,.45);
}
.btn-primary:hover:not(:disabled) { box-shadow: 0 8px 32px rgba(0,229,255,.55); filter: brightness(1.08); transform: translateY(-2px); }
.btn-ghost { background: rgba(255,255,255,.06); border: 1px solid var(--panel-border); }
.btn-ghost:hover:not(:disabled) { background: rgba(255,255,255,.12); transform: translateY(-2px); }
.btn-danger { background: linear-gradient(135deg,#ff416c,#ff4b2b); box-shadow: 0 6px 24px rgba(255,65,108,.4); }
.btn-danger:hover:not(:disabled){ filter: brightness(1.08); transform: translateY(-2px); }
.btn-block { width: 100%; }
.btn-lg { padding: 18px 28px; font-size: 17px; }
.btn-sm { padding: 9px 16px; font-size: 13px; border-radius: 11px; }

/* ---------- Inputs ---------- */
.field { margin-bottom: 16px; }
.field label { display:block; font-size: 13px; color: var(--text-dim); margin-bottom: 8px; font-weight: 600; }
.input {
  width: 100%; padding: 14px 16px; font-family: inherit; font-size: 15px;
  background: rgba(0,0,0,.35); border: 1px solid var(--panel-border);
  border-radius: 12px; color: var(--text); outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.input:focus { border-color: var(--accent-2); box-shadow: 0 0 0 3px rgba(0,229,255,.15); }
.input::placeholder { color: #55597e; }

/* ---------- Auth screen ---------- */
.auth-wrap { max-width: 440px; margin: 0 auto; padding: 40px 20px; }
.auth-card { padding: 32px 30px; }
.tabs { display: flex; background: rgba(0,0,0,.3); border-radius: 12px; padding: 5px; margin-bottom: 26px; }
.tab { flex:1; text-align:center; padding: 11px; border-radius: 9px; cursor: pointer; font-weight:700; color: var(--text-dim); transition: all .2s; }
.tab.active { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color:#fff; box-shadow: 0 4px 14px rgba(124,77,255,.4); }
.form-error { color: var(--danger); font-size: 13px; min-height: 18px; margin: 4px 0 12px; text-align:center; font-weight:600; }

/* ---------- Home / Menu ---------- */
.topbar { display:flex; align-items:center; justify-content:space-between; padding: 16px 20px; }
.user-chip { display:flex; align-items:center; gap:10px; }
.avatar {
  width: 42px; height: 42px; border-radius: 50%; display:grid; place-items:center;
  font-weight: 900; color:#fff; font-size:18px; box-shadow: 0 0 0 2px rgba(255,255,255,.15), 0 4px 14px rgba(0,0,0,.4);
}
.user-meta .name { font-weight:700; font-size:15px; }
.user-meta .stats { font-size:12px; color: var(--text-dim); }

.menu-grid { display:grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 10px; }
@media (max-width: 720px){ .menu-grid { grid-template-columns: 1fr; } }
.mode-card {
  padding: 28px 26px; cursor:pointer; position:relative; overflow:hidden;
  transition: transform .2s, box-shadow .2s; min-height: 200px;
  display:flex; flex-direction:column; justify-content:space-between;
}
.mode-card:hover { transform: translateY(-4px); box-shadow: 0 14px 44px rgba(0,0,0,.5); }
.mode-card .mc-icon { font-size: 40px; margin-bottom: 14px; }
.mode-card h3 { font-size: 24px; margin-bottom: 8px; }
.mode-card p { color: var(--text-dim); font-size: 14px; line-height:1.6; }
.mode-card::before {
  content:''; position:absolute; inset:0; opacity:.14; z-index:-1;
  background: radial-gradient(circle at 80% 10%, var(--c1), transparent 60%);
}
.mode-card.cpu { --c1: var(--uno-red); }
.mode-card.online { --c1: var(--accent-2); }
.mode-card .badge { position:absolute; top:16px; right:16px; font-size:11px; padding:4px 10px; border-radius:20px; background: rgba(255,255,255,.1); color: var(--text-dim); font-weight:700; }

/* ---------- Player count selector ---------- */
.count-grid { display:flex; gap: 14px; flex-wrap:wrap; justify-content:center; margin: 20px 0; }
.count-opt {
  width: 90px; height: 100px; border-radius: 16px; cursor:pointer;
  background: rgba(0,0,0,.3); border: 2px solid var(--panel-border);
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:6px;
  transition: all .18s; font-weight:700;
}
.count-opt .big { font-size: 34px; font-family:'Orbitron'; }
.count-opt .lbl { font-size: 12px; color: var(--text-dim); }
.count-opt:hover { border-color: var(--accent-2); transform: translateY(-3px); }
.count-opt.selected { border-color: var(--accent-2); background: linear-gradient(135deg, rgba(124,77,255,.3), rgba(0,229,255,.2)); box-shadow: 0 0 20px rgba(0,229,255,.3); }

/* ============================================================
   GAME BOARD
   ============================================================ */
.game-screen { height: 100vh; display:flex; flex-direction:column; overflow:hidden; padding: 0; }
.game-top { display:flex; align-items:center; justify-content:space-between; padding: 10px 16px; }
.game-status { font-size:13px; color: var(--text-dim); font-weight:600; }
#turn-indicator { font-family:'Orbitron'; font-weight:700; }

/* Opponents row */
.opponents { display:flex; gap: 14px; justify-content:center; flex-wrap:wrap; padding: 6px 12px; }
.opponent {
  display:flex; flex-direction:column; align-items:center; gap:6px;
  padding: 10px 14px; border-radius: 14px; min-width: 92px;
  background: rgba(255,255,255,.03); border: 1px solid transparent; transition: all .3s;
  position:relative;
}
.opponent.active { border-color: var(--accent-2); box-shadow: 0 0 22px rgba(0,229,255,.4); background: rgba(0,229,255,.06); }
.opponent .op-name { font-size: 13px; font-weight:700; max-width: 100px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.opponent .op-cards { display:flex; align-items:center; gap:6px; font-size:12px; color: var(--text-dim); }
.mini-card {
  width: 22px; height: 32px; border-radius: 4px;
  background: linear-gradient(135deg,#1a1a3a,#2a2a5a); border:1px solid rgba(255,255,255,.15);
}
.uno-flag { position:absolute; top:-8px; right:-8px; background: var(--uno-red); color:#fff; font-size:10px; font-weight:900; padding:2px 7px; border-radius:10px; font-family:'Orbitron'; box-shadow:0 2px 8px rgba(255,59,71,.6); animation: unoPop .4s ease; }
@keyframes unoPop { from{ transform: scale(0);} to{ transform:scale(1);} }

/* Center table */
.table-center {
  flex:1; display:flex; align-items:center; justify-content:center; gap: 30px;
  position:relative; padding: 10px;
}
.pile-group { display:flex; flex-direction:column; align-items:center; gap:8px; }
.pile-label { font-size:11px; color: var(--text-dim); text-transform:uppercase; letter-spacing:.15em; }
.draw-pile {
  width: 88px; height: 128px; border-radius: 12px; cursor:pointer; position:relative;
  background: repeating-linear-gradient(45deg,#12132e,#12132e 6px,#1a1b3e 6px,#1a1b3e 12px);
  border: 2px solid rgba(124,77,255,.4); box-shadow: 0 6px 24px rgba(0,0,0,.5);
  display:grid; place-items:center; transition: transform .15s;
}
.draw-pile:hover { transform: translateY(-4px) scale(1.03); box-shadow: 0 0 26px rgba(124,77,255,.5); }
.draw-pile .dp-logo { font-family:'Orbitron'; font-weight:900; font-size:22px; color:#fff; transform: rotate(-12deg); background: linear-gradient(135deg,var(--uno-red),var(--uno-yellow),var(--uno-green),var(--uno-blue)); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; }
.draw-pile .dp-count { position:absolute; bottom:-10px; background:var(--accent); font-size:11px; font-weight:800; padding:2px 8px; border-radius:10px; }

/* Direction indicator */
.direction-ring { position:absolute; width: 320px; height: 320px; border-radius:50%; border: 2px dashed rgba(124,77,255,.18); pointer-events:none; }
.direction-ring i { position:absolute; color: var(--accent-2); font-size:18px; opacity:.7; }

/* ---------- UNO CARD ---------- */
.card {
  width: 84px; height: 122px; border-radius: 12px; position: relative;
  cursor: pointer; user-select:none; flex-shrink:0;
  box-shadow: 0 4px 16px rgba(0,0,0,.5);
  transition: transform .18s cubic-bezier(.2,.8,.3,1.2), box-shadow .2s, filter .2s;
  border: 3px solid #fff;
  overflow:hidden;
}
.card .card-inner {
  position:absolute; inset:0; display:grid; place-items:center;
  background: var(--cc);
}
.card .oval {
  position:absolute; width: 62%; height: 84%; background: rgba(255,255,255,.92);
  border-radius: 50%; transform: rotate(45deg);
  box-shadow: inset 0 0 0 2px rgba(0,0,0,.05);
}
.card .center-symbol {
  position: relative; z-index:2; font-family:'Orbitron'; font-weight:900;
  font-size: 46px; color: var(--cc);
  text-shadow: 2px 2px 0 rgba(0,0,0,.12);
}
.card .corner {
  position:absolute; z-index:3; font-family:'Orbitron'; font-weight:800; font-size:16px; color:#fff;
  text-shadow: 1px 1px 2px rgba(0,0,0,.4);
}
.card .corner.tl { top: 5px; left: 8px; }
.card .corner.br { bottom: 5px; right: 8px; transform: rotate(180deg); }
.card.red { --cc: var(--uno-red); }
.card.yellow { --cc: var(--uno-yellow); }
.card.green { --cc: var(--uno-green); }
.card.blue { --cc: var(--uno-blue); }
.card.wild .card-inner { background: #1a1a2e; }
.card.wild .oval { background: #222; }
.card.wild .wild-quad { position:absolute; z-index:2; width:52%; height:74%; border-radius:50%; transform:rotate(45deg); overflow:hidden; display:grid; grid-template-columns:1fr 1fr; grid-template-rows:1fr 1fr; }
.card.wild .wild-quad span:nth-child(1){ background: var(--uno-red);} 
.card.wild .wild-quad span:nth-child(2){ background: var(--uno-blue);} 
.card.wild .wild-quad span:nth-child(3){ background: var(--uno-yellow);} 
.card.wild .wild-quad span:nth-child(4){ background: var(--uno-green);} 
.card.wild .center-symbol { color:#fff; font-size: 30px; text-shadow: 0 0 8px rgba(0,0,0,.6);}

.card.small { width: 58px; height: 84px; border-width:2px; }
.card.small .center-symbol { font-size: 30px; }
.card.small .corner { font-size: 11px; }

/* discard on table */
.discard-card { transform: rotate(-6deg); animation: dropCard .35s ease; box-shadow: 0 8px 30px rgba(0,0,0,.6); }
@keyframes dropCard { from{ transform: translateY(-60px) rotate(20deg) scale(1.2); opacity:0;} to{ transform: rotate(-6deg) scale(1); opacity:1;} }

/* current color chip */
.color-chip { width: 30px; height: 30px; border-radius: 50%; border:2px solid #fff; box-shadow: 0 0 14px var(--glow); }

/* ---------- Player hand ---------- */
.hand-zone { padding: 8px 8px 18px; }
.my-info { display:flex; align-items:center; justify-content:space-between; padding: 4px 16px 8px; }
.hand {
  display:flex; justify-content:center; align-items:flex-end; gap: 0;
  padding: 20px 16px 6px; overflow-x:auto; overflow-y:visible; min-height: 150px;
  scrollbar-width: thin;
}
.hand .card { margin-left: -22px; transition: transform .2s, margin .2s; }
.hand .card:first-child { margin-left: 0; }
.hand .card.playable:hover { transform: translateY(-24px) scale(1.06); z-index: 20; box-shadow: 0 12px 30px rgba(0,229,255,.5); }
.hand .card.playable { border-color: #fff; }
.hand .card.playable::after { content:''; position:absolute; inset:0; border-radius:9px; box-shadow: inset 0 0 0 2px rgba(0,229,255,.6); animation: playablePulse 1.6s infinite; }
@keyframes playablePulse { 0%,100%{ opacity:.4;} 50%{ opacity:1;} }
.hand .card.disabled { filter: brightness(.55) grayscale(.3); cursor: not-allowed; }
@media (min-width: 900px){ .hand .card { margin-left: -14px; } }

/* Action bar */
.action-bar { display:flex; gap:12px; justify-content:center; padding: 6px 16px; flex-wrap:wrap; }
.uno-btn {
  background: linear-gradient(135deg,var(--uno-red),#ff6b00); font-family:'Orbitron'; font-weight:900;
  box-shadow: 0 6px 22px rgba(255,59,71,.5); font-size:16px; letter-spacing:.05em;
}
.uno-btn.armed { animation: unoGlow .8s infinite; }
@keyframes unoGlow { 0%,100%{ box-shadow: 0 6px 22px rgba(255,59,71,.5);} 50%{ box-shadow: 0 6px 34px rgba(255,204,0,.8);} }

/* ---------- Color picker modal ---------- */
.modal-overlay {
  position: fixed; inset:0; background: rgba(0,0,0,.7); backdrop-filter: blur(6px);
  display:flex; align-items:center; justify-content:center; z-index: 200; animation: fadeIn .25s;
}
.modal { padding: 30px; text-align:center; max-width: 380px; width:90%; }
.modal h3 { margin-bottom: 20px; font-size:20px; }
.color-picker { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.color-swatch {
  height: 90px; border-radius: 16px; cursor:pointer; border:3px solid rgba(255,255,255,.2);
  display:grid; place-items:center; font-weight:900; font-size:16px; color:#fff; transition: transform .15s, box-shadow .2s;
  font-family:'Noto Sans JP';
}
.color-swatch:hover { transform: scale(1.06); border-color:#fff; }
.color-swatch.red { background: var(--uno-red); box-shadow:0 0 20px var(--uno-red-glow); }
.color-swatch.yellow { background: var(--uno-yellow); box-shadow:0 0 20px var(--uno-yellow-glow); color:#333; }
.color-swatch.green { background: var(--uno-green); box-shadow:0 0 20px var(--uno-green-glow); }
.color-swatch.blue { background: var(--uno-blue); box-shadow:0 0 20px var(--uno-blue-glow); }

/* ---------- Lobby ---------- */
.lobby { max-width: 560px; margin: 0 auto; padding: 20px; }
.room-code-display {
  text-align:center; padding: 24px; margin-bottom: 20px;
}
.room-code {
  font-family:'Orbitron'; font-weight:900; font-size: 44px; letter-spacing:.2em;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent;
  cursor:pointer;
}
.lobby-players { display:flex; flex-direction:column; gap:12px; margin: 18px 0; }
.lobby-player {
  display:flex; align-items:center; gap:12px; padding: 12px 16px; border-radius:12px;
  background: rgba(255,255,255,.03); border:1px solid var(--panel-border);
}
.lobby-player .ready-tag { margin-left:auto; font-size:12px; font-weight:700; padding: 4px 12px; border-radius:20px; }
.ready-tag.yes { background: rgba(0,230,118,.18); color: var(--ok); }
.ready-tag.no { background: rgba(255,255,255,.08); color: var(--text-dim); }
.host-tag { font-size:10px; background: var(--uno-yellow); color:#333; padding:2px 7px; border-radius:8px; font-weight:800; }

/* ---------- Winner overlay ---------- */
.winner-overlay {
  position: fixed; inset:0; background: rgba(5,6,15,.85); backdrop-filter: blur(10px);
  display:flex; flex-direction:column; align-items:center; justify-content:center; z-index:300; animation: fadeIn .5s;
}
.winner-title { font-family:'Orbitron'; font-weight:900; font-size: clamp(40px,10vw,80px);
  background: linear-gradient(135deg, var(--uno-yellow), var(--uno-red)); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent;
  animation: logoPulse 1.5s infinite; margin-bottom: 10px; }
.winner-name { font-size: 24px; font-weight:700; margin-bottom: 30px; }

/* ---------- Toast ---------- */
#toast-container { position: fixed; top: 20px; left:50%; transform: translateX(-50%); z-index: 500; display:flex; flex-direction:column; gap:10px; align-items:center; }
.toast {
  padding: 12px 22px; border-radius: 12px; font-weight:600; font-size:14px;
  background: var(--panel); border:1px solid var(--panel-border); box-shadow: var(--shadow);
  backdrop-filter: blur(12px); animation: toastIn .3s ease; max-width: 90vw;
}
.toast.error { border-color: rgba(255,69,105,.5); color: #ffb3c0; }
.toast.success { border-color: rgba(0,230,118,.5); color: #b3ffd1; }
.toast.info { color: var(--text); }
@keyframes toastIn { from{ transform: translateY(-20px); opacity:0;} to{ transform:none; opacity:1;} }

/* ---------- Log / misc ---------- */
.game-log { position: fixed; bottom: 10px; left: 10px; font-size: 11px; color: var(--text-dim); max-width: 260px; opacity:.7; pointer-events:none; }
.section-title { font-size: 20px; font-weight:800; margin: 22px 0 12px; display:flex; align-items:center; gap:10px; }

.leaderboard-row { display:flex; align-items:center; gap:12px; padding:10px 14px; border-radius:10px; }
.leaderboard-row:nth-child(odd){ background: rgba(255,255,255,.03); }
.rank { font-family:'Orbitron'; font-weight:900; width:28px; text-align:center; }
.rank.gold{ color:#ffd700;} .rank.silver{ color:#c0c0c0;} .rank.bronze{ color:#cd7f32; }

.loading-spin { width:44px; height:44px; border:4px solid rgba(255,255,255,.1); border-top-color: var(--accent-2); border-radius:50%; animation: spin 1s linear infinite; margin: 40px auto; }
@keyframes spin { to { transform: rotate(360deg); } }

.hidden { display:none !important; }
.text-dim { color: var(--text-dim); }
.text-center { text-align:center; }
.mt { margin-top: 16px; }
.mt-lg { margin-top: 28px; }
.row { display:flex; gap:12px; }
.row-between { display:flex; justify-content:space-between; align-items:center; }
.flex-1 { flex:1; }

/* Skip / reverse symbols */
.sym-skip::before { content:'\\00D8'; }
.sym-reverse::before { content:'\\21C4'; }
.sym-draw2::before { content:'+2'; }
.sym-draw4::before { content:'+4'; }

@media (max-width: 600px) {
  .card { width: 68px; height: 100px; }
  .card .center-symbol { font-size: 36px; }
  .hand .card { margin-left: -28px; }
  .table-center { gap: 16px; }
  .direction-ring { display:none; }
}