:root {
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
}

body {
  margin: 0;
  overflow: hidden;
  font-family: "Inter", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: radial-gradient(circle at 50% 10%, #2b1f4d 0%, #0a1024 55%, #03050f 100%);
  color: #eef3ff;
}

.game-wrap {
  position: relative;
  width: 100vw;
  height: 100vh;
}

#poolTable {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

.hud {
  position: absolute;
  top: clamp(0.8rem, 2vw, 1.4rem);
  left: clamp(0.8rem, 2vw, 1.4rem);
  width: min(370px, calc(100vw - 1.6rem));
  background: linear-gradient(180deg, rgba(11, 15, 32, 0.84), rgba(11, 15, 32, 0.7));
  border: 1px solid rgba(157, 193, 255, 0.38);
  border-radius: 16px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  backdrop-filter: blur(8px);
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.42);
}

.hud h1 {
  margin: 0;
  font-size: clamp(1.3rem, 2.4vw, 1.8rem);
  letter-spacing: 0.03em;
}

.hud p {
  margin: 0;
  color: rgba(238, 243, 255, 0.9);
}


.mode-picker {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.92rem;
}

.mode-picker select {
  border: 1px solid rgba(157, 193, 255, 0.38);
  border-radius: 10px;
  padding: 0.5rem 0.6rem;
  background: rgba(11, 15, 32, 0.8);
  color: #eef3ff;
  font: inherit;
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.45rem 0.9rem;
  font-weight: 640;
}

.status {
  min-height: 2.3rem;
  padding: 0.45rem 0.6rem;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
}

.controls {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

#resetBtn,
.back-link {
  border: none;
  border-radius: 10px;
  padding: 0.66rem 0.9rem;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 160ms ease, filter 160ms ease;
}

#resetBtn:hover,
.back-link:hover {
  transform: translateY(-1px);
  filter: brightness(1.09);
}

#resetBtn {
  background: linear-gradient(180deg, #43de9e, #15a46f);
  color: #072315;
  font-weight: 650;
}

.back-link {
  text-align: center;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.15);
  color: #f2f5ff;
}


.hud.is-hidden {
  opacity: 0;
  transform: translateY(-10px) scale(0.98);
  pointer-events: none;
}

.hud-toggle {
  position: absolute;
  top: clamp(0.8rem, 2vw, 1.4rem);
  left: clamp(0.8rem, 2vw, 1.4rem);
  z-index: 2;
  border: 1px solid rgba(157, 193, 255, 0.38);
  border-radius: 999px;
  padding: 0.55rem 0.85rem;
  background: rgba(11, 15, 32, 0.85);
  color: #eef3ff;
  font-size: 0.9rem;
  cursor: pointer;
  backdrop-filter: blur(8px);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.35);
}

.hud-toggle:hover {
  filter: brightness(1.08);
}

.hud-toggle.is-hidden {
  display: none;
}

.hud {
  transition: opacity 170ms ease, transform 170ms ease;
  z-index: 1;
}