* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: #0a0a1a;
  color: #eee;
  font-family: 'Segoe UI', sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

.hidden { display: none !important; }

/* --- Portrait orientation warning (mobile only) --- */
#rotate-notice {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(10,10,26,0.95);
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: clamp(1em, 3vmin, 2em);
  color: rgba(220,220,240,0.85);
  text-align: center;
  padding: 2em;
}
#rotate-notice .rotate-icon {
  font-size: clamp(3rem, 12vmin, 6rem);
  animation: rotatePhone 2s ease-in-out infinite;
}
#rotate-notice p {
  font-size: clamp(0.9rem, 2.5vmin, 1.3rem);
  line-height: 1.6;
}
@keyframes rotatePhone {
  0%, 100% { transform: rotate(0deg); }
  25%      { transform: rotate(-90deg); }
  50%, 75% { transform: rotate(-90deg); }
}
@media (pointer: coarse) and (orientation: portrait) and (max-width: 768px) {
  #rotate-notice { display: flex; }
}

/* ============================================
   SETUP SCREEN — Full visual polish
   ============================================ */
#setup-screen {
  text-align: center;
  position: relative;
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding-top: clamp(0.5vh, 2vh, 5vh);
  align-items: center;
  background: url('image/main_bg.png') center/cover no-repeat;
  overflow-x: hidden;
  overflow-y: auto;
}

/* Dark gradient overlay with vignette */
#setup-screen::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, rgba(10,10,30,0.3) 0%, rgba(10,10,30,0.75) 100%),
    linear-gradient(180deg, rgba(10,10,30,0.2) 0%, rgba(10,10,30,0.6) 100%);
  z-index: 0;
}
#setup-screen > * {
  position: relative;
  z-index: 1;
}

/* --- Floating Triangle Decorations --- */
.deco-tri {
  position: absolute;
  width: 0; height: 0;
  border-left: solid transparent;
  border-right: solid transparent;
  border-bottom: solid;
  opacity: 0;
  animation: floatTri linear infinite;
  z-index: 0;
  pointer-events: none;
  filter: blur(0.5px);
}
.tri-1 {
  border-left-width: clamp(12px, 3vmin, 30px);
  border-right-width: clamp(12px, 3vmin, 30px);
  border-bottom-width: clamp(20px, 5vmin, 50px);
  border-bottom-color: rgba(233,69,96,0.25);
  top: 8%; left: 12%;
  animation-duration: 14s; animation-delay: 0s;
}
.tri-2 {
  border-left-width: clamp(8px, 2vmin, 20px);
  border-right-width: clamp(8px, 2vmin, 20px);
  border-bottom-width: clamp(14px, 3.5vmin, 35px);
  border-bottom-color: rgba(0,210,255,0.2);
  top: 15%; right: 18%;
  animation-duration: 18s; animation-delay: 2s;
}
.tri-3 {
  border-left-width: clamp(15px, 4vmin, 40px);
  border-right-width: clamp(15px, 4vmin, 40px);
  border-bottom-width: clamp(26px, 6.5vmin, 65px);
  border-bottom-color: rgba(80,250,123,0.15);
  bottom: 20%; left: 8%;
  animation-duration: 20s; animation-delay: 4s;
}
.tri-4 {
  border-left-width: clamp(6px, 1.5vmin, 15px);
  border-right-width: clamp(6px, 1.5vmin, 15px);
  border-bottom-width: clamp(10px, 2.5vmin, 25px);
  border-bottom-color: rgba(241,250,140,0.2);
  top: 60%; right: 10%;
  animation-duration: 16s; animation-delay: 1s;
}
.tri-5 {
  border-left-width: clamp(10px, 2.5vmin, 25px);
  border-right-width: clamp(10px, 2.5vmin, 25px);
  border-bottom-width: clamp(18px, 4.5vmin, 45px);
  border-bottom-color: rgba(233,69,96,0.15);
  bottom: 12%; right: 30%;
  animation-duration: 22s; animation-delay: 3s;
}
.tri-6 {
  border-left-width: clamp(9px, 2vmin, 22px);
  border-right-width: clamp(9px, 2vmin, 22px);
  border-bottom-width: clamp(16px, 3.5vmin, 38px);
  border-bottom-color: rgba(0,210,255,0.15);
  top: 35%; left: 5%;
  animation-duration: 17s; animation-delay: 5s;
}

@keyframes floatTri {
  0%   { opacity: 0; transform: translateY(0) rotate(0deg) scale(0.7); }
  15%  { opacity: 1; }
  50%  { transform: translateY(-30px) rotate(180deg) scale(1.1); }
  85%  { opacity: 1; }
  100% { opacity: 0; transform: translateY(0) rotate(360deg) scale(0.7); }
}

/* --- Title Group --- */
.title-group {
  position: relative;
  margin-bottom: clamp(0.3em, 1.5vmin, 1.5em);
}
.title-glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: clamp(200px, 50vmin, 500px);
  height: clamp(100px, 25vmin, 250px);
  background: radial-gradient(ellipse, rgba(233,69,96,0.25) 0%, rgba(15,52,96,0.15) 40%, transparent 70%);
  filter: blur(clamp(20px, 5vmin, 50px));
  animation: pulseGlow 4s ease-in-out infinite;
  pointer-events: none;
}
@keyframes pulseGlow {
  0%, 100% { opacity: 0.6; transform: translate(-50%, -50%) scale(1); }
  50%      { opacity: 1;   transform: translate(-50%, -50%) scale(1.15); }
}

#setup-screen h1 {
  font-size: clamp(1.5rem, 8vmin, 5rem);
  font-weight: 800;
  margin-bottom: 0.15em;
  background: linear-gradient(135deg, #ff6b8a, #e94560, #c23152, #0f3460, #00d2ff);
  background-size: 300% 300%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientShift 6s ease-in-out infinite;
  text-shadow: none;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.subtitle {
  font-size: clamp(1rem, 2.5vmin, 1.5rem);
  color: rgba(200, 200, 220, 0.7);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  animation: fadeSlideUp 1s 0.3s both;
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* --- Setup Card (glassmorphism) --- */
.setup-card {
  background: rgba(22, 33, 62, 0.5);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: clamp(12px, 2.5vmin, 24px);
  padding: clamp(0.6em, 2vmin, 2.5em) clamp(0.8em, 3vmin, 3em);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  animation: fadeSlideUp 0.8s 0.5s both;
  max-width: 45vw;
  width: 100%;
}

.setup-options {
  display: flex;
  flex-direction: column;
  gap: clamp(0.2em, 1.3vmin, 1.4em);
  align-items: center;
}

.setup-row {
  display: flex;
  gap: clamp(0.8em, 2vmin, 2em);
  align-items: center;
  justify-content: center;
}

.setup-options label {
  display: flex;
  gap: 0.8em;
  align-items: center;
  font-size: clamp(0.7rem, 2vmin, 1.2rem);
  color: rgba(220, 220, 240, 0.85);
}

.setup-options select {
  padding: 0.45em 0.9em;
  font-size: clamp(0.65rem, 1.8vmin, 1.1rem);
  border-radius: clamp(6px, 1vmin, 10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(22, 33, 62, 0.8);
  color: #eee;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.setup-options select:focus {
  border-color: rgba(233, 69, 96, 0.5);
  box-shadow: 0 0 8px rgba(233, 69, 96, 0.2);
  outline: none;
}

/* Name inputs */
#name-inputs {
  display: flex;
  flex-direction: column;
  gap: clamp(0.4em, 1vmin, 0.8em);
  width: 100%;
  max-width: min(20ch, 50vw);
}
.name-input-row {
  display: flex;
  align-items: center;
  gap: 0.6em;
  animation: fadeSlideUp 0.4s both;
}
.name-input-row:nth-child(1) { animation-delay: 0.1s; }
.name-input-row:nth-child(2) { animation-delay: 0.15s; }
.name-input-row:nth-child(3) { animation-delay: 0.2s; }
.name-input-row:nth-child(4) { animation-delay: 0.25s; }

.name-input-row .name-dot {
  width: clamp(10px, 1.6vmin, 16px);
  height: clamp(10px, 1.6vmin, 16px);
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 8px currentColor;
}
.name-input-row input {
  flex: 1;
  padding: 0.45em 0.8em;
  font-size: clamp(0.65rem, 1.8vmin, 1.1rem);
  border-radius: clamp(6px, 1vmin, 10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(22, 33, 62, 0.6);
  color: #eee;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  -webkit-user-select: text;
  user-select: text;
}
.name-input-row input:focus {
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 0 12px rgba(255, 255, 255, 0.05);
}
.name-input-row input.invalid {
  border-color: #e94560;
  box-shadow: 0 0 12px rgba(233, 69, 96, 0.3);
  animation: shake 0.4s;
}
@keyframes shake {
  0%,100% { transform: translateX(0); }
  20%,60% { transform: translateX(-4px); }
  40%,80% { transform: translateX(4px); }
}
.name-error {
  color: #ff6b8a;
  font-size: clamp(0.6rem, 1.4vmin, 0.95rem);
  min-height: 1.2em;
  text-shadow: 0 0 10px rgba(233, 69, 96, 0.3);
}

/* --- Start Button --- */
#start-btn, #restart-btn {
  position: relative;
  margin-top: 1.2em;
  padding: 0.75em 2.8em;
  font-size: clamp(0.8rem, 2.2vmin, 1.4rem);
  font-weight: 700;
  border: none;
  border-radius: clamp(8px, 1.5vmin, 14px);
  color: #fff;
  cursor: pointer;
  overflow: hidden;
  background: linear-gradient(135deg, #e94560, #c23152, #0f3460);
  background-size: 200% 200%;
  animation: gradientShift 4s ease-in-out infinite;
  box-shadow:
    0 4px 20px rgba(233, 69, 96, 0.35),
    0 0 40px rgba(233, 69, 96, 0.1);
  transition: transform 0.2s, box-shadow 0.2s;
  -webkit-tap-highlight-color: transparent;
}
#start-btn::before, #restart-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent 50%);
  pointer-events: none;
}
#start-btn::after {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
#start-btn:hover, #restart-btn:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow:
    0 8px 30px rgba(233, 69, 96, 0.45),
    0 0 60px rgba(233, 69, 96, 0.15);
}
#start-btn:hover::after {
  opacity: 1;
}
#start-btn:active, #restart-btn:active {
  transform: translateY(0) scale(0.98);
}
#start-btn span, #restart-btn span {
  position: relative;
  z-index: 1;
  text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

/* --- Language Toggle --- */
#lang-btn {
  position: absolute;
  top: clamp(10px, 2vmin, 20px);
  right: clamp(10px, 2vmin, 20px);
  z-index: 5;
  padding: clamp(4px, 0.8vmin, 8px) clamp(10px, 2vmin, 16px);
  font-size: clamp(0.7rem, 1.4vmin, 0.95rem);
  font-weight: 600;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: clamp(6px, 1vmin, 10px);
  background: rgba(22,33,62,0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: rgba(220,220,240,0.8);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
  -webkit-tap-highlight-color: transparent;
}
#lang-btn:hover {
  background: rgba(233,69,96,0.2);
  border-color: rgba(233,69,96,0.4);
}

/* --- Footer Hint --- */
.footer-hint {
  display: none;
}

/* --- Mobile landscape: compact layout --- */
@media (max-height: 500px) and (orientation: landscape) {
  #setup-screen {
    padding-top: 1vh;
  }
  .title-group {
    margin-bottom: 0.2em;
  }
  #setup-screen h1 {
    font-size: clamp(1.2rem, 5vmin, 2.5rem);
  }
  .subtitle {
    font-size: clamp(0.6rem, 1.5vmin, 0.9rem);
  }
  .setup-card {
    padding: 0.4em 0.8em;
  }
  .setup-options {
    gap: 0.15em;
  }
  #name-inputs {
    gap: 0.2em;
  }
  .name-input-row input {
    padding: 0.2em 0.5em;
  }
  #start-btn {
    margin-top: 0.4em;
    padding: 0.4em 2em;
  }
}

/* ============================================
   GAME SCREEN
   ============================================ */
#game-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  height: 100vh;
  background: url('image/game_bg.webp') center/cover no-repeat;
  position: relative;
}
#game-screen::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 30, 0.45);
  z-index: 0;
  pointer-events: none;
}
#game-screen > * {
  position: relative;
  z-index: 1;
}

/* HUD — shared */
.hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: clamp(4px, 1vmin, 12px) clamp(8px, 2vmin, 20px);
  flex-shrink: 0;
  z-index: 10;
}
.hud-mirror { transform: rotate(180deg); }
#hud-bottom { display: none; }
@media (max-width: 768px), (pointer: coarse) {
  #hud-bottom { display: flex; }
}

.player-info {
  display: flex;
  gap: clamp(6px, 1.5vmin, 20px);
  flex-wrap: wrap;
}

.player-badge {
  display: flex;
  align-items: center;
  gap: clamp(4px, 0.8vmin, 10px);
  padding: clamp(6px, 1.2vmin, 12px) clamp(12px, 2vmin, 22px);
  border-radius: clamp(14px, 3vmin, 28px);
  font-size: clamp(0.9rem, 2.2vmin, 1.4rem);
  font-weight: 600;
  opacity: 0.45;
  transition: opacity 0.3s, transform 0.3s, box-shadow 0.3s;
  background: rgba(255,255,255,0.04);
  -webkit-tap-highlight-color: transparent;
}
.player-badge.active {
  opacity: 1;
  transform: scale(1.1);
  box-shadow: 0 0 clamp(8px, 1.5vmin, 16px) var(--player-glow, rgba(255,255,255,0.3));
}
.player-badge .dot {
  width: clamp(8px, 1.4vmin, 16px);
  height: clamp(8px, 1.4vmin, 16px);
  border-radius: 50%;
}
.player-badge .score {
  font-weight: 700;
  font-size: 1.1em;
  margin-left: clamp(3px, 0.7vmin, 8px);
  color: #eee;
}

.turn-info {
  font-size: clamp(1rem, 2.5vmin, 1.6rem);
  font-weight: 600;
  color: #ccc;
  white-space: nowrap;
  text-shadow: 0 0 10px rgba(255,255,255,0.15);
}

/* Board container */
#board-container {
  flex: 1;
  width: 100%;
  overflow: hidden;
  position: relative;
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
}

canvas#board {
  position: absolute;
  top: 0;
  left: 0;
  cursor: grab;
  border-radius: 0;
  -webkit-tap-highlight-color: transparent;
}
canvas#board:active {
  cursor: grabbing;
}

/* Minimap */
canvas#minimap,
canvas#minimap-mirror {
  position: absolute;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: clamp(4px, 0.8vmin, 8px);
  background: rgba(22,33,62,0.85);
  z-index: 12;
  pointer-events: none;
  box-shadow: 0 2px 10px rgba(0,0,0,0.4);
}
canvas#minimap {
  top: clamp(6px, 1.2vmin, 12px);
  right: clamp(6px, 1.2vmin, 12px);
}
/* Mirror minimap: bottom-left, rotated 180 for opponent view — mobile only */
canvas#minimap-mirror {
  display: none;
  bottom: clamp(6px, 1.2vmin, 12px);
  left: clamp(6px, 1.2vmin, 12px);
  transform: scaleY(-1);
}
@media (max-width: 768px), (pointer: coarse) {
  canvas#minimap-mirror {
    display: block;
  }
}

/* Timer bar */
#timer-bar-wrap,
#timer-bar-wrap-mirror {
  position: absolute;
  left: 0;
  width: 100%;
  height: clamp(4px, 0.6vmin, 6px);
  background: rgba(255,255,255,0.08);
  z-index: 15;
  pointer-events: none;
}
#timer-bar-wrap { top: 0; }
#timer-bar-wrap-mirror {
  display: none;
  bottom: 0;
  transform: scaleX(-1);
}
@media (max-width: 768px), (pointer: coarse) {
  #timer-bar-wrap-mirror { display: block; }
}
#timer-bar,
#timer-bar-mirror {
  height: 100%;
  width: 100%;
  border-radius: 0 2px 2px 0;
  transition: width 0.15s linear, background-color 0.3s;
}

/* ============================================
   RESULT OVERLAY
   ============================================ */
#result-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 100;
  animation: fadeIn 0.4s;
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

#result-box {
  background: rgba(22, 33, 62, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: clamp(1.5em, 4vmin, 3em) clamp(1.8em, 5vmin, 4em);
  border-radius: clamp(12px, 2.5vmin, 24px);
  text-align: center;
  min-width: min(300px, 80vw);
  box-shadow:
    0 16px 48px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  animation: popIn 0.5s 0.1s both;
}
@keyframes popIn {
  from { opacity: 0; transform: scale(0.85) translateY(20px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

#result-box h2 {
  margin-bottom: 1em;
  font-size: clamp(1.3rem, 3.5vmin, 2.2rem);
  background: linear-gradient(135deg, #ff6b8a, #00d2ff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
#result-list {
  margin-bottom: 1.5em;
  font-size: clamp(0.9rem, 2vmin, 1.3rem);
  line-height: 2;
}
.rank-entry {
  display: flex;
  justify-content: space-between;
  gap: clamp(1em, 3vmin, 3em);
}
.rank-entry .medal {
  font-size: clamp(1rem, 2.2vmin, 1.5rem);
}

.result-summary {
  margin-bottom: clamp(0.8em, 2vmin, 1.5em);
  padding-bottom: clamp(0.6em, 1.5vmin, 1.2em);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.summary-winner {
  font-size: clamp(1.1rem, 2.8vmin, 1.8rem);
  margin-bottom: 0.4em;
}
.summary-stats {
  font-size: clamp(0.8rem, 1.6vmin, 1rem);
  color: #888;
}