:root {
  --a: #4cc9f0;
  --b: #ff8a3d;
  --bg: #05060f;
  --panel: rgba(14, 18, 40, 0.92);
  --line: rgba(140, 170, 255, 0.22);
  --txt: #e8ecff;
  --dim: #93a0c8;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--txt);
  font-family: "Inter", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  overflow: hidden;
  -webkit-user-select: none;
  user-select: none;
}

body {
  display: grid;
  grid-template-rows: auto 1fr auto;
  height: 100vh;
  height: 100dvh;
}

/* ------------------------------------------------------------------- HUD */

#hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 16px;
  background: linear-gradient(180deg, rgba(20,26,55,0.95), rgba(10,12,28,0.6));
  border-bottom: 1px solid var(--line);
  position: relative;
}

.score-side { display: flex; align-items: center; gap: 10px; min-width: 190px; }
.score-side.team-b { justify-content: flex-end; }
.team-name { font-size: 12px; letter-spacing: 2px; font-weight: 700; color: var(--dim); }
.team-a .team-name { color: var(--a); }
.team-b .team-name { color: var(--b); }
.score {
  font-size: 30px; font-weight: 800; font-variant-numeric: tabular-nums;
  min-width: 34px; text-align: center;
}
.team-a .score { color: var(--a); text-shadow: 0 0 18px rgba(76,201,240,0.55); }
.team-b .score { color: var(--b); text-shadow: 0 0 18px rgba(255,138,61,0.55); }
.dot { width: 12px; height: 12px; border-radius: 50%; }
.team-a .dot { background: var(--a); box-shadow: 0 0 14px var(--a); }
.team-b .dot { background: var(--b); box-shadow: 0 0 14px var(--b); }

.center-hud { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.badge {
  padding: 6px 16px; border-radius: 999px; font-weight: 700; font-size: 14px;
  border: 1px solid var(--line); background: rgba(76,201,240,0.15); color: var(--a);
  white-space: nowrap;
}
.meta { display: flex; gap: 14px; font-size: 11px; color: var(--dim); letter-spacing: 0.4px; }

.ghost-btn {
  position: absolute; right: 14px; top: 50%; transform: translateY(-50%);
  width: 38px; height: 38px; border-radius: 10px;
  background: rgba(255,255,255,0.06); border: 1px solid var(--line);
  color: var(--txt); font-size: 17px; cursor: pointer;
}
.ghost-btn:hover { background: rgba(255,255,255,0.13); }

/* ----------------------------------------------------------------- campo */

#stage {
  position: relative;
  display: flex; align-items: center; justify-content: center;
  min-height: 0; overflow: hidden;
}
#canvas { touch-action: none; cursor: crosshair; display: block; }

#banner {
  position: absolute; left: 50%; top: 22%;
  transform: translate(-50%, -50%) scale(0.85);
  font-size: clamp(26px, 5vw, 58px); font-weight: 900; letter-spacing: 2px;
  text-shadow: 0 0 30px rgba(255,255,255,0.6);
  opacity: 0; pointer-events: none; transition: opacity .25s, transform .25s;
  white-space: nowrap;
}
#banner.show { opacity: 1; transform: translate(-50%, -50%) scale(1); }

#ffBtn {
  position: absolute; right: 18px; bottom: 14px;
  padding: 8px 14px; border-radius: 8px; cursor: pointer;
  background: rgba(255,255,255,0.08); border: 1px solid var(--line); color: var(--txt);
  font-size: 12px;
}

/* -------------------------------------------------------------- comandi */

#controls {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  grid-template-areas: "ang pow shoot" "hint hint hint";
  gap: 10px 20px;
  align-items: center;
  padding: 12px 20px 14px;
  background: linear-gradient(0deg, rgba(20,26,55,0.95), rgba(10,12,28,0.6));
  border-top: 1px solid var(--line);
  transition: opacity .2s;
}
#controls.disabled { opacity: 0.38; pointer-events: none; }
.ctl:nth-of-type(1) { grid-area: ang; }
.ctl:nth-of-type(2) { grid-area: pow; }
.ctl label { display: block; font-size: 12px; color: var(--dim); margin-bottom: 4px; letter-spacing: .4px; }
.ctl label b { color: var(--txt); font-variant-numeric: tabular-nums; }
.hint { grid-area: hint; margin: 0; font-size: 11px; color: var(--dim); text-align: center; }

input[type=range] {
  width: 100%; height: 22px; -webkit-appearance: none; background: transparent; cursor: pointer;
}
input[type=range]::-webkit-slider-runnable-track {
  height: 5px; border-radius: 3px;
  background: linear-gradient(90deg, rgba(76,201,240,.6), rgba(255,138,61,.6));
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 17px; height: 17px; border-radius: 50%;
  background: #fff; margin-top: -6px; box-shadow: 0 0 10px rgba(255,255,255,.7);
}

button {
  font: inherit; color: var(--txt); cursor: pointer;
  background: rgba(255,255,255,0.07); border: 1px solid var(--line);
  padding: 10px 18px; border-radius: 10px; transition: .15s;
}
button:hover:not(:disabled) { background: rgba(255,255,255,0.15); transform: translateY(-1px); }
button:disabled { opacity: .45; cursor: default; }
button.primary {
  grid-area: shoot;
  background: linear-gradient(135deg, #4cc9f0, #4361ee);
  border: none; font-weight: 800; letter-spacing: 1px; color: #04122b;
  box-shadow: 0 6px 22px rgba(67,97,238,.45);
}
button.big { width: 100%; padding: 14px; font-weight: 600; margin-bottom: 8px; }

/* -------------------------------------------------------------- overlay */

#overlay {
  position: fixed; inset: 0; z-index: 20;
  background: rgba(4, 6, 16, 0.82);
  backdrop-filter: blur(7px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
#overlay[hidden] { display: none; }
.modal {
  width: min(520px, 100%);
  max-height: 90vh; overflow-y: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 26px;
  box-shadow: 0 30px 80px rgba(0,0,0,.65);
}
.modal h1 { font-size: 42px; margin: 0 0 4px; letter-spacing: -1px; }
.modal h1 span { color: var(--b); }
.modal h2 { margin: 0 0 14px; }
.tagline { color: var(--dim); margin: 0 0 22px; }
.row { display: flex; gap: 8px; margin-top: 12px; }
.row button { flex: 1; padding: 10px 6px; font-size: 13px; }
.code {
  font-size: 42px; font-weight: 800; letter-spacing: 10px; text-align: center;
  padding: 14px; margin: 12px 0; border-radius: 12px;
  background: rgba(76,201,240,.12); border: 1px dashed var(--line); color: var(--a);
}
.status { color: var(--b); font-size: 13px; min-height: 18px; }
.small { font-size: 12px; color: var(--dim); line-height: 1.5; }
.ca { color: var(--a); }
.field { display: block; font-size: 13px; color: var(--dim); margin-bottom: 14px; }
.field input, .field select {
  display: block; width: 100%; margin-top: 6px; padding: 11px 12px;
  background: rgba(255,255,255,.06); border: 1px solid var(--line);
  border-radius: 9px; color: var(--txt); font: inherit;
}
#joinCode { text-transform: uppercase; letter-spacing: 8px; text-align: center; font-size: 22px; font-weight: 700; }
.check { display: flex; align-items: center; gap: 9px; font-size: 13px; color: var(--dim); margin-bottom: 14px; }
.check input { width: 17px; height: 17px; accent-color: var(--a); }
.rules { padding-left: 20px; line-height: 1.65; font-size: 13.5px; color: #c8d0ea; }
.rules li { margin-bottom: 8px; }
.rules b { color: var(--txt); }
#panelOver h2 { font-size: 34px; text-align: center; }

#toast {
  position: fixed; left: 50%; bottom: 26px; transform: translate(-50%, 20px);
  background: rgba(20,26,55,.96); border: 1px solid var(--line);
  padding: 11px 20px; border-radius: 10px; font-size: 14px;
  opacity: 0; pointer-events: none; transition: .25s; z-index: 40;
}
#toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 720px) {
  .score-side { min-width: 0; }
  .team-name { display: none; }
  #controls { grid-template-columns: 1fr 1fr; grid-template-areas: "ang pow" "shoot shoot" "hint hint"; }
  button.primary { width: 100%; }
  .modal h1 { font-size: 32px; }
}

/* avviso di pozzo gravitazionale */
#wellWarn {
  grid-area: hint;
  margin: 0 0 2px; font-size: 12px; text-align: center;
  color: #ff9f6b; font-weight: 600;
}
#wellWarn.ok { color: #7dffb0; }
#controls { grid-template-areas: "ang pow shoot" "curve curve curve" "well well well" "hint hint hint"; }
#curveVal { grid-area: curve; margin: 0; font-size: 12px; text-align: center; color: var(--dim); font-variant-numeric: tabular-nums; }
#curveVal.ok { color: #7dffb0; }
#wellWarn { grid-area: well; }
input[type=range].con-soglia::-webkit-slider-runnable-track {
  background: linear-gradient(90deg,
    rgba(255,120,90,.55) 0%, rgba(255,120,90,.55) var(--soglia, 50%),
    rgba(125,255,176,.6) var(--soglia, 50%), rgba(125,255,176,.6) 100%);
}
@media (max-width: 720px) {
  #controls { grid-template-areas: "ang pow" "shoot shoot" "curve curve" "well well" "hint hint"; }
}