/* ============================================================
   Entangle Together — Co-op Bell Challenge styles
   ARTISTIC INDIE theme: dark cinematic with warm accents
   ============================================================ */

:root {
  --coop-bg-deep: #0B0D14;
  --coop-bg-card: #1A1B24;
  --coop-coral: #E87979;
  --coop-gold: #D4A574;
  --coop-purple: #8B6BAE;
  --coop-text: #E6E2DC;
  --coop-text-secondary: #A8A5A0;
  --coop-border: #2A2B34;
  --coop-radius-lg: 20px;
  --coop-radius-md: 14px;
}

#coopPage {
  padding: 0 clamp(16px, 3vw, 32px) 40px;
}

.coop-page-inner {
  max-width: 1100px;
  margin: 0 auto;
}

/* ── Header ── */
.coop-header {
  text-align: center;
  margin-bottom: 24px;
  padding-top: 8px;
}

.coop-header-number {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 3px;
  color: var(--coop-gold);
  margin-bottom: 10px;
}

.coop-header-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  font-weight: 800;
  background: linear-gradient(125deg, var(--coop-coral), var(--coop-gold), var(--coop-purple));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 12px;
  line-height: 1.15;
  text-shadow: 0 0 40px rgba(232, 121, 121, 0.3);
  animation: warmGlow 3s ease-in-out infinite alternate;
}

@keyframes warmGlow {
  0% { filter: drop-shadow(0 0 20px rgba(212, 165, 116, 0.2)); }
  100% { filter: drop-shadow(0 0 30px rgba(232, 121, 121, 0.35)); }
}

.coop-header-desc {
  color: var(--coop-text-secondary);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
  font-size: 1rem;
}

/* ── Viewport (dark screen) ── */
.coop-viewport {
  background: var(--coop-bg-deep);
  border: 1px solid var(--coop-border);
  border-radius: var(--coop-radius-lg);
  position: relative;
  overflow: hidden;
  box-shadow:
    0 10px 40px rgba(0, 0, 0, 0.5),
    inset 0 0 60px rgba(232, 121, 121, 0.03),
    inset 0 0 100px rgba(212, 165, 116, 0.02);
}

#coopWrap {
  width: 100%;
  height: clamp(380px, 52vw, 560px);
  position: relative;
}

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

/* ── HUD (inside viewport, over canvas) ── */
.coop-hud {
  position: absolute;
  top: 0; left: 0; right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  pointer-events: none;
  z-index: 5;
  gap: 10px;
}

.coop-hud-pips {
  display: flex;
  gap: 5px;
}

.coop-pip {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1.5px solid rgba(232, 121, 121, 0.35);
  background: transparent;
  transition: all 0.25s;
}

.coop-pip.filled {
  background: var(--coop-coral);
  border-color: var(--coop-coral);
  box-shadow: 0 0 12px rgba(232, 121, 121, 0.7);
  animation: pipPulse 1.5s ease-in-out infinite;
}

@keyframes pipPulse {
  0%, 100% { box-shadow: 0 0 8px rgba(232, 121, 121, 0.6); }
  50% { box-shadow: 0 0 16px rgba(232, 121, 121, 0.9); }
}

.coop-hud-right {
  display: flex;
  gap: 14px;
  align-items: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--coop-text-secondary);
}

.coop-hud-streak {
  color: var(--coop-gold);
  font-weight: 600;
  text-shadow: 0 0 10px rgba(212, 165, 116, 0.5);
}

/* ── Goal card ── */
.coop-goal {
  position: absolute;
  top: 52px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  pointer-events: none;
  text-align: center;
  padding: 10px 24px;
  border-radius: 14px;
  background: rgba(26, 27, 36, 0.9);
  backdrop-filter: blur(12px);
  border: 1px solid var(--coop-border);
  transition: opacity 0.25s, transform 0.25s, border-color 0.3s, box-shadow 0.3s;
}

.coop-goal.match {
  border-color: rgba(232, 121, 121, 0.6);
  box-shadow: 0 0 20px rgba(232, 121, 121, 0.2), inset 0 0 30px rgba(232, 121, 121, 0.05);
}
.coop-goal.anti  {
  border-color: rgba(212, 165, 116, 0.6);
  box-shadow: 0 0 20px rgba(212, 165, 116, 0.2), inset 0 0 30px rgba(212, 165, 116, 0.05);
}
.coop-goal.hidden { opacity: 0; transform: translateX(-50%) translateY(-8px); }

.coop-goal-tag {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.62rem;
  letter-spacing: 2px;
  color: var(--coop-text-secondary);
  margin-bottom: 2px;
}

.coop-goal-text {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.coop-goal.match .coop-goal-text { color: var(--coop-coral); }
.coop-goal.anti  .coop-goal-text { color: var(--coop-gold); }

.coop-goal-sub {
  font-size: 0.72rem;
  color: var(--coop-text-secondary);
  margin-top: 2px;
}

/* ── Probability meter ── */
.coop-meter {
  position: absolute;
  bottom: 64px;
  left: 50%;
  transform: translateX(-50%);
  width: min(300px, 60%);
  z-index: 5;
  pointer-events: none;
  text-align: center;
}

.coop-meter-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--coop-text-secondary);
  margin-bottom: 4px;
}

.coop-meter-track {
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  position: relative;
}

.coop-meter-fill {
  height: 100%;
  width: 50%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--coop-coral), var(--coop-gold));
  transition: width 0.12s linear, background 0.2s;
  box-shadow: 0 0 15px rgba(232, 121, 121, 0.4);
}

.coop-meter-fill.good { background: linear-gradient(90deg, var(--coop-gold), var(--coop-coral)); }

.coop-meter-mark {
  position: absolute;
  top: -3px;
  bottom: -3px;
  width: 3px;
  border-radius: 2px;
  background: var(--coop-purple);
  box-shadow: 0 0 10px rgba(139, 107, 174, 0.8);
  transform: translateX(-50%);
}

/* ── Overlays (menu / game over) ── */
.coop-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(11, 13, 20, 0.94);
  backdrop-filter: blur(12px);
  z-index: 10;
  text-align: center;
  gap: 10px;
  padding: 20px;
  overflow-y: auto;
}

.coop-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(1.7rem, 4.5vw, 2.8rem);
  font-weight: 800;
  background: linear-gradient(125deg, var(--coop-coral) 0%, var(--coop-text) 45%, var(--coop-gold) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 2px;
  filter: drop-shadow(0 0 25px rgba(232, 121, 121, 0.4));
  animation: titleGlow 4s ease-in-out infinite alternate;
}

@keyframes titleGlow {
  0% { filter: drop-shadow(0 0 20px rgba(232, 121, 121, 0.3)); }
  100% { filter: drop-shadow(0 0 35px rgba(212, 165, 116, 0.5)); }
}

.coop-subtitle {
  font-size: 0.95rem;
  color: var(--coop-text-secondary);
  max-width: 480px;
  line-height: 1.6;
}

.coop-mode-btns {
  display: flex;
  gap: 12px;
  margin-top: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

.coop-mode-btn {
  padding: 14px 30px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-family: 'Orbitron', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: #fff;
  transition: transform 0.15s, box-shadow 0.2s;
}

.coop-mode-btn.two {
  background: linear-gradient(135deg, var(--coop-coral), #c45c5c);
  box-shadow: 0 6px 26px rgba(232, 121, 121, 0.4);
}

.coop-mode-btn.ai {
  background: linear-gradient(135deg, var(--coop-gold), #b8894e);
  box-shadow: 0 6px 26px rgba(212, 165, 116, 0.35);
}

.coop-mode-btn:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 8px 32px rgba(232, 121, 121, 0.5);
}

.coop-mode-btn.ai:hover {
  box-shadow: 0 8px 32px rgba(212, 165, 116, 0.45);
}

/* How-to steps on the menu */
.coop-howto {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
  background: rgba(26, 27, 36, 0.7);
  border: 1px solid rgba(232, 121, 121, 0.15);
  border-radius: var(--coop-radius-md);
  padding: 14px 20px;
  max-width: 460px;
  width: 100%;
  backdrop-filter: blur(8px);
}

.coop-howto-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.68rem;
  letter-spacing: 2px;
  color: var(--coop-gold);
  margin-bottom: 2px;
}

html[lang="th"] .coop-howto-title { font-family: 'Kanit', sans-serif; font-size: 0.95rem; letter-spacing: 0.5px; }

.coop-howto-step {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.02rem;
  color: var(--coop-text);
  text-align: left;
  line-height: 1.5;
}

.coop-howto-num {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--coop-coral), var(--coop-gold));
  color: #fff;
  font-weight: 800;
  font-size: 0.85rem;
  display: grid;
  place-items: center;
  box-shadow: 0 0 12px rgba(232, 121, 121, 0.3);
}

/* Controls legend */
.coop-legend {
  display: flex;
  gap: 18px;
  margin-top: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

.coop-legend-col {
  background: rgba(26, 27, 36, 0.7);
  border: 1px solid var(--coop-border);
  border-radius: var(--coop-radius-md);
  padding: 14px 20px;
  min-width: 200px;
  text-align: left;
  backdrop-filter: blur(8px);
}

.coop-legend-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.68rem;
  letter-spacing: 2px;
  margin-bottom: 8px;
}

.coop-legend-col.p1 .coop-legend-title { color: var(--coop-coral); }
.coop-legend-col.p2 .coop-legend-title { color: var(--coop-gold); }

.coop-legend-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--coop-text-secondary);
  padding: 3px 0;
}

.coop-key {
  display: inline-grid;
  place-items: center;
  min-width: 26px;
  height: 24px;
  padding: 0 6px;
  border-radius: 6px;
  border: 1px solid rgba(232, 121, 121, 0.3);
  background: rgba(26, 27, 36, 0.8);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--coop-text);
}

/* Game-over stats */
.coop-stats {
  display: flex;
  gap: 22px;
  margin: 10px 0 4px;
  flex-wrap: wrap;
  justify-content: center;
}

.coop-stat {
  text-align: center;
}

.coop-stat-value {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--coop-gold);
  text-shadow: 0 0 20px rgba(212, 165, 116, 0.5);
}

.coop-stat-label {
  font-size: 0.72rem;
  color: var(--coop-text-secondary);
  margin-top: 2px;
}

.coop-over-title-win {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--coop-coral);
  letter-spacing: 2px;
  text-shadow: 0 0 30px rgba(232, 121, 121, 0.5);
  animation: winPulse 2s ease-in-out infinite;
}

@keyframes winPulse {
  0%, 100% { text-shadow: 0 0 30px rgba(232, 121, 121, 0.5); }
  50% { text-shadow: 0 0 50px rgba(232, 121, 121, 0.8), 0 0 80px rgba(212, 165, 116, 0.4); }
}

.coop-over-title-lose {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--coop-text-secondary);
  letter-spacing: 2px;
  text-shadow: 0 0 20px rgba(168, 165, 160, 0.3);
}

/* ── Touch controls ── */
.coop-touch {
  position: absolute;
  bottom: 10px;
  z-index: 6;
  display: flex;
  gap: 8px;
}

.coop-touch.p1 { left: 10px; }
.coop-touch.p2 { right: 10px; }

.coop-touch-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(232, 121, 121, 0.35);
  background: rgba(26, 27, 36, 0.85);
  color: var(--coop-text);
  font-size: 1.1rem;
  cursor: pointer;
  display: grid;
  place-items: center;
  user-select: none;
  touch-action: none;
  transition: all 0.15s;
}

.coop-touch-btn:active {
  background: rgba(232, 121, 121, 0.2);
  border-color: var(--coop-coral);
  box-shadow: 0 0 15px rgba(232, 121, 121, 0.4);
}

/* ── Home page banner ── */
.coop-banner {
  width: 100%;
  max-width: 1000px;
  margin: var(--space-2xl, 48px) auto var(--space-2xl, 48px);
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 22px 28px;
  border-radius: var(--coop-radius-md);
  border: 1px solid var(--coop-border);
  background: rgba(26, 27, 36, 0.7);
  backdrop-filter: blur(12px);
  cursor: pointer;
  text-align: left;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s, background 0.25s;
}

.coop-banner:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(232, 121, 121, 0.15);
  border-color: rgba(232, 121, 121, 0.4);
  background: rgba(26, 27, 36, 0.85);
}

.coop-banner-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--coop-coral), var(--coop-gold));
  display: grid;
  place-items: center;
  font-size: 1.6rem;
  flex-shrink: 0;
  color: #fff;
  box-shadow: 0 4px 20px rgba(232, 121, 121, 0.3);
}

.coop-banner-content { flex: 1; }

.coop-banner-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--coop-gold);
  text-transform: uppercase;
  margin-bottom: 3px;
}

.coop-banner-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--coop-text);
  margin-bottom: 3px;
}

.coop-banner-desc {
  font-size: 0.9rem;
  color: var(--coop-text-secondary);
}

.coop-banner-play {
  flex-shrink: 0;
  font-size: 1.6rem;
  color: var(--coop-coral);
  animation: playPulse 2s ease-in-out infinite;
}

@keyframes playPulse {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.1); opacity: 1; }
}

/* ── Physics strip under viewport ── */
.coop-physics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.coop-physics-card {
  background: rgba(26, 27, 36, 0.7);
  border: 1px solid var(--coop-border);
  border-radius: var(--coop-radius-md);
  padding: 18px 20px;
  backdrop-filter: blur(8px);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.coop-physics-card:hover {
  border-color: rgba(232, 121, 121, 0.3);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.coop-physics-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.8rem;
  color: var(--coop-gold);
  margin-bottom: 6px;
}

.coop-physics-text {
  font-size: 0.88rem;
  color: var(--coop-text-secondary);
  line-height: 1.6;
}

/* ── Responsive ── */
@media (max-width: 640px) {
  #coopWrap { height: clamp(340px, 90vw, 480px); }
  .coop-legend { gap: 10px; }
  .coop-legend-col { min-width: 150px; padding: 10px 14px; }
  .coop-banner { flex-direction: column; text-align: center; }
  .coop-banner-content { text-align: center; }
  .coop-meter { bottom: 70px; width: 55%; }

  /* Compact goal card */
  .coop-goal {
    top: 50px;
    width: max-content;
    max-width: 88%;
    padding: 6px 14px;
  }
  .coop-goal-text { font-size: 0.9rem; }
  .coop-goal-sub { font-size: 0.66rem; }
  .coop-goal-tag { display: none; }
}