.page {
  width: 100%;
  max-width: 480px;
  padding: 1.5rem 1.25rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Header */
.header { text-align: center; padding-top: .5rem; }
.header .subtitle { color: var(--c-muted); font-size: .9rem; margin-top: .25rem; }

/* Card sections */
.card {
  background: #fff;
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.1rem 1rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
.card label { font-size: .8rem; font-weight: 600; color: var(--c-muted); text-transform: uppercase; letter-spacing: .05em; }

/* Color buttons */
.color-group {
  display: flex;
  gap: .6rem;
}
.color-btn {
  flex: 1;
  padding: .8rem .5rem;
  border-radius: var(--radius);
  font-size: .95rem;
  font-weight: 600;
  color: #fff;
  background: var(--c-border);
  border: 3px solid transparent;
  transition: border-color .15s, opacity .15s;
}
.color-btn[data-color="red"]    { background: var(--c-red); }
.color-btn[data-color="green"]  { background: var(--c-green); }
.color-btn[data-color="yellow"] { background: var(--c-yellow); color: #333; }
.color-btn.selected { border-color: var(--c-text); box-shadow: 0 0 0 3px rgba(0,0,0,.15); }

/* Drum picker */
.drum-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
}

.drum-wrapper {
  position: relative;
  height: 200px;
  width: 68px;
  overflow: hidden;
  border-radius: 10px;
  border: 2px solid var(--c-border);
  background: #fafafa;
}

/* Digit-only drums (0-9) can be narrower */
.drum-wrapper.drum-digit {
  width: 56px;
}

/* Selection highlight band */
.drum-wrapper::before,
.drum-wrapper::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  height: 76px;
  pointer-events: none;
  z-index: 2;
}
.drum-wrapper::before { top: 0;    background: linear-gradient(to bottom, rgba(255,255,255,.92) 40%, transparent); }
.drum-wrapper::after  { bottom: 0; background: linear-gradient(to top,   rgba(255,255,255,.92) 40%, transparent); }

/* Center selection indicator */
.drum-wrapper .drum-center {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  left: 0; right: 0;
  height: 44px;
  border-top: 2px solid var(--c-accent);
  border-bottom: 2px solid var(--c-accent);
  pointer-events: none;
  z-index: 3;
}

.drum {
  height: 100%;
  overflow-y: scroll;
  scroll-snap-type: y mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.drum::-webkit-scrollbar { display: none; }

.drum-item {
  height: 44px;
  scroll-snap-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--c-text);
  user-select: none;
}

.drum-sep {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--c-muted);
  padding-top: .15rem;
}

.weight-readout {
  text-align: center;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: .03em;
  min-height: 1.8rem;
}

/* Submit button */
.btn-submit {
  background: var(--c-accent);
  color: #fff;
  width: 100%;
  padding: 1rem;
  font-size: 1.1rem;
  border-radius: var(--radius);
  letter-spacing: .02em;
}
.btn-submit:disabled { background: #90a4ae; cursor: not-allowed; }

/* Error / success messages */
.msg {
  text-align: center;
  font-size: .95rem;
  padding: .6rem .8rem;
  border-radius: 8px;
  display: none;
}
.msg.show { display: block; }
.msg.error   { background: #ffebee; color: var(--c-red); }
.msg.success { background: #e8f5e9; color: #2e7d32; }

/* Shake animation for duplicate weight */
@keyframes shake {
  0%,100%{ transform: translateX(0); }
  20%    { transform: translateX(-8px); }
  40%    { transform: translateX(8px); }
  60%    { transform: translateX(-6px); }
  80%    { transform: translateX(6px); }
}
.shake { animation: shake .4s ease; }

/* Success screen overlay */
.success-screen {
  display: none;
  position: fixed;
  inset: 0;
  background: #fff;
  z-index: 100;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 2rem;
  text-align: center;
}
.success-screen.show { display: flex; }
.success-screen .big-check { font-size: 4rem; }
.success-screen .weight-display { font-size: 2rem; font-weight: 800; color: var(--c-accent); }
.success-screen .btn-back {
  background: var(--c-border);
  color: var(--c-text);
  padding: .8rem 2rem;
}

/* Winner banner (shown via WS) */
.winner-banner {
  display: none;
  position: fixed;
  bottom: 1rem;
  left: 1rem; right: 1rem;
  background: #f9a825;
  color: #333;
  font-weight: 700;
  padding: 1rem;
  border-radius: var(--radius);
  text-align: center;
  z-index: 200;
  box-shadow: var(--shadow);
}
.winner-banner.show { display: block; }