:root {
  --bg: #0a0a12;
  --bg-2: #12121f;
  --ink: #f4f3ff;
  --muted: #9a9ab5;
  --line: rgba(255, 255, 255, 0.09);
  --card: rgba(255, 255, 255, 0.035);
  --pink: #ff3d81;
  --violet: #8b5cf6;
  --cyan: #22d3ee;
  --grad: linear-gradient(115deg, var(--pink), var(--violet) 55%, var(--cyan));
  --radius: 20px;
  --shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.7);
  font-synthesis-weight: none;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: ui-rounded, "SF Pro Rounded", "Segoe UI", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
  overscroll-behavior: none;
  -webkit-tap-highlight-color: transparent;
}

@supports (height: 100dvh) {
  html, body { height: 100dvh; }
}

button, .btn, .swatch, .size-dot, .tool, .duel-card { touch-action: manipulation; }
.screen h1, .screen h2, .prompt-label, .btn, .tool, .score-name, figcaption { user-select: none; }

body::before {
  content: "";
  position: fixed;
  inset: -20% -20% auto -20%;
  height: 70vh;
  background:
    radial-gradient(50% 60% at 20% 20%, rgba(255, 61, 129, 0.28), transparent 70%),
    radial-gradient(45% 55% at 85% 10%, rgba(34, 211, 238, 0.22), transparent 70%),
    radial-gradient(40% 50% at 55% 60%, rgba(139, 92, 246, 0.24), transparent 70%);
  filter: blur(20px);
  pointer-events: none;
  z-index: 0;
}

#app {
  position: relative;
  z-index: 1;
  height: 100%;
  display: grid;
  place-items: center;
  padding: clamp(12px, 3vw, 32px);
  padding-top: max(clamp(12px, 3vw, 32px), env(safe-area-inset-top));
  padding-bottom: max(clamp(12px, 3vw, 32px), env(safe-area-inset-bottom));
  padding-left: max(clamp(12px, 3vw, 32px), env(safe-area-inset-left));
  padding-right: max(clamp(12px, 3vw, 32px), env(safe-area-inset-right));
}

/* ---------- screen transitions ---------- */
.screen {
  grid-area: 1 / 1;
  width: 100%;
  max-width: 720px;
  max-height: 100%;
  overflow-y: auto;
  opacity: 0;
  transform: translateY(14px) scale(0.99);
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.28s cubic-bezier(0.2, 0.8, 0.2, 1);
}
#app { display: grid; }
.screen:not(.is-active) {
  overflow: hidden;
  transition: opacity 0.12s ease;
  z-index: 0;
}
.screen.is-active { z-index: 1; }
.screen.is-active {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}
#screen-draw.is-active {
  max-width: 900px;
  align-self: stretch;
  justify-self: stretch;
  width: 100%;
  height: 100%;
  margin-inline: auto;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ---------- buttons ---------- */
.btn {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 16px 26px;
  font: inherit;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  line-height: 1.15;
  transition: transform 0.14s ease, box-shadow 0.2s ease, filter 0.2s ease;
}
.btn:active { transform: translateY(1px) scale(0.985); }
.btn-primary {
  background: var(--grad);
  color: #0b0b14;
  box-shadow: 0 12px 30px -10px rgba(139, 92, 246, 0.65);
}
.btn-primary:hover { filter: brightness(1.07); box-shadow: 0 16px 40px -10px rgba(255, 61, 129, 0.6); }
.btn-ghost {
  background: var(--card);
  border: 1px solid var(--line);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.07); }
.btn-sm { padding: 11px 20px; font-size: 0.9rem; }
.btn-title { font-size: 1.05rem; letter-spacing: 0.2px; }
.btn-sub { font-size: 0.78rem; font-weight: 600; opacity: 0.72; }

/* ---------- home ---------- */
.home-card {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: clamp(26px, 5vw, 44px);
  box-shadow: var(--shadow);
  text-align: center;
}
.logo {
  margin: 0;
  font-size: clamp(2.6rem, 9vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 0.92;
}
.logo em {
  font-style: normal;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.logo span { color: var(--violet); }
.tagline {
  margin: 14px 0 26px;
  color: var(--muted);
  font-weight: 600;
}
.field {
  display: block;
  text-align: left;
  max-width: 340px;
  margin: 0 auto 22px;
}
.field span {
  display: block;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: 7px;
}
.field input {
  width: 100%;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 13px 16px;
  color: var(--ink);
  font: inherit;
  font-weight: 600;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.field input:focus {
  border-color: var(--violet);
  box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.2);
}
.home-actions {
  display: grid;
  gap: 12px;
  max-width: 340px;
  margin: 0 auto;
}
.home-actions .btn { width: 100%; }
.online-count {
  margin: 22px 0 0;
  font-size: 0.82rem;
  color: var(--muted);
}
.online-count b { color: var(--cyan); }

/* ---------- searching / waiting / private ---------- */
.search-box, .private-box, .result-box {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: clamp(30px, 6vw, 52px);
  box-shadow: var(--shadow);
  text-align: center;
}
.search-box h2, .private-box h2 { margin: 6px 0 8px; font-size: 1.5rem; }
.search-box p, .private-box > p { color: var(--muted); margin: 0 0 22px; }

.private-box .btn { width: 100%; max-width: 320px; }
.or {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  max-width: 320px;
  margin: 18px auto;
}
.or::before, .or::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}
#join-form {
  display: flex;
  gap: 10px;
  max-width: 320px;
  margin: 0 auto;
}
#code-input {
  flex: 1;
  min-width: 0;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 13px 16px;
  color: var(--ink);
  font: inherit;
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: 0.4em;
  text-align: center;
  text-transform: uppercase;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
#code-input::placeholder { letter-spacing: 0.4em; color: var(--muted); font-weight: 700; }
#code-input:focus { border-color: var(--violet); box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.2); }
#join-form .btn { width: auto; padding: 13px 22px; }
.err { color: #ff6b8b; font-size: 0.85rem; min-height: 1.2em; margin: 14px 0 6px; }
#btn-private-back { margin-top: 6px; }

.room-code-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--muted);
  margin: 0 0 8px;
}
.code-display {
  font-weight: 800;
  font-size: clamp(2.6rem, 12vw, 4rem);
  letter-spacing: 0.24em;
  padding-left: 0.24em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 14px;
}
.pulse-ring {
  position: relative;
  width: 88px;
  height: 88px;
  margin: 0 auto 22px;
}
.pulse-ring div {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 3px solid var(--violet);
  animation: pulse 1.8s cubic-bezier(0.2, 0.7, 0.3, 1) infinite;
}
.pulse-ring div:nth-child(2) { animation-delay: 0.6s; border-color: var(--pink); }
.pulse-ring div:nth-child(3) { animation-delay: 1.2s; border-color: var(--cyan); }
@keyframes pulse {
  0% { transform: scale(0.3); opacity: 0.9; }
  100% { transform: scale(1); opacity: 0; }
}

/* ---------- play head ---------- */
.play-head {
  flex: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.prompt-chip {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 10px 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.prompt-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
}
.prompt-chip strong {
  font-size: clamp(1.05rem, 3.4vw, 1.5rem);
  font-weight: 800;
  letter-spacing: -0.01em;
}
.timer {
  flex: none;
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  font-size: 2rem;
  width: 76px;
  height: 76px;
  border-radius: 20px;
  display: grid;
  place-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  transition: color 0.3s, background 0.3s, transform 0.3s;
}
.timer.warn { color: #ffcf5c; }
.timer.danger {
  color: #fff;
  background: linear-gradient(180deg, var(--pink), #b3245a);
  animation: tick 1s steps(1) infinite;
}
@keyframes tick { 50% { transform: scale(1.06); } }

/* ---------- canvas stage ---------- */
.stage {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  background: #fff;
}
#pad {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: crosshair;
}
.stage-flash {
  position: absolute;
  inset: 0;
  background: #fff;
  opacity: 0;
  pointer-events: none;
}
.stage-flash.go { animation: flash 0.5s ease; }
@keyframes flash { 0% { opacity: 0.85; } 100% { opacity: 0; } }

/* ---------- toolbar ---------- */
.toolbar {
  flex: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 12px 14px;
}
.swatches, .sizes, .tool-btns { display: flex; gap: 8px; align-items: center; }
.tool-btns { margin-left: auto; }
.swatch {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.25);
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.2s ease;
}
.swatch.active {
  transform: scale(1.18);
  box-shadow: 0 0 0 3px var(--bg-2), 0 0 0 5px currentColor;
}
.size-dot {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--card);
  border: 1px solid var(--line);
  cursor: pointer;
}
.size-dot i {
  display: block;
  border-radius: 50%;
  background: var(--ink);
}
.size-dot.active { background: rgba(139, 92, 246, 0.25); border-color: var(--violet); }
.tool {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  font: inherit;
  font-weight: 700;
  font-size: 0.82rem;
  padding: 9px 13px;
  border-radius: 11px;
  cursor: pointer;
  transition: background 0.16s ease, border-color 0.16s ease;
}
.tool:hover { background: rgba(255, 255, 255, 0.08); }
.tool.active { background: rgba(255, 61, 129, 0.2); border-color: var(--pink); }
.btn-done { flex-direction: row; padding: 13px 22px; }
.draw-hint {
  flex: none;
  text-align: center;
  color: var(--muted);
  font-size: 0.82rem;
  min-height: 1.2em;
  margin: 0;
}

/* ---------- vote ---------- */
.vote-head { text-align: center; margin-bottom: 18px; }
.vote-prompt {
  margin: 0;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--muted);
}
.vote-head strong { font-size: clamp(1.3rem, 4vw, 2rem); font-weight: 800; }
.duel {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: clamp(8px, 2vw, 20px);
}
.duel-card {
  margin: 0;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  border: 3px solid transparent;
  box-shadow: var(--shadow);
  transition: transform 0.16s ease, border-color 0.2s ease;
}
.duel-card img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: contain; background: #fff; }
.duel-card figcaption {
  color: #0b0b14;
  font-weight: 800;
  text-align: center;
  padding: 8px;
  font-size: 0.9rem;
  background: #fff;
}
.duel-card.pick { border-color: var(--violet); transform: translateY(-4px); }
.duel-card.win { border-color: var(--cyan); }
.versus {
  font-weight: 900;
  font-size: clamp(1rem, 3vw, 1.6rem);
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.vote-actions {
  margin: 20px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.vote-status {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  min-height: 1.2em;
  margin-top: 12px;
}

/* ---------- result ---------- */
.result-badge { font-size: 3.4rem; line-height: 1; }
.result-box h2 { margin: 10px 0 6px; font-size: 1.7rem; }
.result-box > p { color: var(--muted); margin: 0 0 20px; }
.scoreboard {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  margin: 8px 0 26px;
}
.score-col { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.score-name {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.score-num {
  font-size: 2.8rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}
.score-sep { font-size: 1.8rem; color: var(--muted); }
.result-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.result-status { color: var(--muted); font-size: 0.84rem; min-height: 1.2em; margin: 14px 0 0; }

/* ---------- toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%) translateY(12px);
  background: var(--bg-2);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: var(--shadow);
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 50;
}
.toast.show { opacity: 1; transform: translateX(-50%); }

@media (max-width: 560px) {
  .toolbar { justify-content: center; gap: 8px 10px; padding: 10px; }
  .tool-btns { margin-left: 0; }
  .btn-done { width: 100%; justify-content: center; padding: 12px; }
  .duel { grid-template-columns: 1fr; }
  .versus { justify-self: center; }
  .timer { width: 60px; height: 60px; font-size: 1.6rem; border-radius: 16px; }
  .prompt-chip { padding: 8px 12px; }
  .swatch { width: 32px; height: 32px; }
  .size-dot { width: 36px; height: 36px; }
  .tool { padding: 10px 12px; }
}

@media (max-height: 560px) and (orientation: landscape) {
  #screen-draw.is-active { flex-direction: row; flex-wrap: wrap; }
  .play-head { width: 100%; }
  .stage { flex-basis: 55%; }
  .toolbar { flex: 1 1 40%; align-content: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001s !important; transition-duration: 0.05s !important; }
}