* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: #05030f;
  overflow: hidden;
  overscroll-behavior: none;
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
}

#game-container {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

#game-canvas {
  display: block;
  touch-action: none;
  max-width: 100vw;
  max-height: 100vh;
  border-radius: 0;
}

@media (min-width: 700px) {
  #game-canvas {
    border-radius: 12px;
    box-shadow: 0 0 60px rgba(57, 255, 206, 0.15);
  }
}

.hidden {
  display: none !important;
}

/* =========================================================
   HUD
   ========================================================= */

#hud {
  position: absolute;
  top: max(16px, env(safe-area-inset-top));
  left: 16px;
  color: #39ffce;
  font-weight: 800;
  font-size: clamp(14px, 3vw, 20px);
  letter-spacing: 0.04em;
  text-shadow: 0 0 10px rgba(57, 255, 206, 0.6);
  pointer-events: none;
}

#hud-coins {
  margin-top: 4px;
  color: #ffd23f;
  text-shadow: 0 0 8px rgba(255, 210, 63, 0.6);
}

#hud-combo {
  margin-top: 4px;
  color: #f472b6;
  font-size: clamp(12px, 2.5vw, 16px);
}

#hud-vibepack {
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #a78bfa;
  font-size: clamp(11px, 2.2vw, 14px);
}

.pack-bar-track {
  width: 90px;
  height: 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.15);
  overflow: hidden;
}

#pack-bar-fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #7c3aed, #39ffce);
  transition: width 0.1s linear;
}

#hud-status-icons {
  margin-top: 8px;
  display: flex;
  gap: 8px;
}

.status-icon {
  font-size: 20px;
  filter: drop-shadow(0 0 6px rgba(255, 255, 255, 0.4));
}

/* =========================================================
   SCREENS
   ========================================================= */

.screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
  background:
    radial-gradient(
      ellipse at 50% 30%,
      rgba(124, 58, 237, 0.25),
      transparent 60%
    ),
    rgba(5, 3, 15, 0.92);
  color: #fff;
}

/* =========================================================
   TITLES
   ========================================================= */

.title {
  font-size: clamp(40px, 10vw, 72px);
  font-weight: 900;
  letter-spacing: -0.02em;
  margin: 0;
  background: linear-gradient(
    90deg,
    #39ffce,
    #7c3aed
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.title-sm {
  font-size: clamp(26px, 6vw, 38px);
  font-weight: 900;
  margin: 0 0 18px;
  color: #ff4d6d;
}

.subtitle {
  font-weight: 700;
  letter-spacing: 0.25em;
  color: #22d3ee;
  margin: 8px 0 4px;
  font-size: clamp(12px, 2.5vw, 15px);
}

.desc {
  color: rgba(255, 255, 255, 0.6);
  margin: 0 0 32px;
  font-size: clamp(13px, 2.5vw, 15px);
}

/* =========================================================
   PRIMARY BUTTON
   ========================================================= */

.btn-primary {
  font-family: inherit;
  font-weight: 800;
  font-size: clamp(16px, 3vw, 20px);
  letter-spacing: 0.05em;
  color: #05030f;
  background: linear-gradient(
    90deg,
    #39ffce,
    #22d3ee
  );
  border: none;
  border-radius: 999px;
  padding: 16px 48px;
  cursor: pointer;
  box-shadow: 0 0 24px rgba(57, 255, 206, 0.4);
  transition:
    transform 0.12s ease,
    box-shadow 0.12s ease;
}

.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: 0 0 32px rgba(57, 255, 206, 0.6);
}

.btn-primary:active {
  transform: scale(0.96);
}

/* =========================================================
   SECONDARY BUTTONS
   ========================================================= */

.btn-secondary {
  font-family: inherit;
  font-weight: 700;
  font-size: clamp(12px, 2.5vw, 14px);
  letter-spacing: 0.04em;
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  padding: 10px 20px;
  cursor: pointer;
  transition:
    background 0.12s ease,
    transform 0.12s ease,
    border-color 0.12s ease;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(57, 255, 206, 0.55);
}

.btn-secondary:active {
  transform: scale(0.96);
}

.btn-secondary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* =========================================================
   DAY / NIGHT SWITCH
   ========================================================= */

#day-night-btn {
  margin-top: 12px;
  min-width: 145px;
  border-color: rgba(255, 210, 63, 0.45);
  background: rgba(255, 210, 63, 0.08);
}

#day-night-btn:hover {
  background: rgba(255, 210, 63, 0.16);
  border-color: rgba(255, 210, 63, 0.75);
}

/* =========================================================
   HOME BUTTON
   ========================================================= */

#home-btn {
  font-family: inherit;
  font-weight: 700;
  font-size: clamp(12px, 2.5vw, 14px);
  letter-spacing: 0.04em;
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  padding: 11px 30px;
  margin-top: 10px;
  cursor: pointer;
  transition:
    background 0.12s ease,
    transform 0.12s ease,
    border-color 0.12s ease;
}

#home-btn:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(57, 255, 206, 0.55);
}

#home-btn:active {
  transform: scale(0.96);
}

/* =========================================================
   MENU
   ========================================================= */

.menu-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 16px;
}

/* =========================================================
   HINT / CREDIT
   ========================================================= */

.hint {
  margin-top: 20px;
  font-size: clamp(11px, 2vw, 13px);
  color: rgba(255, 255, 255, 0.4);
}

.credit {
  position: absolute;
  bottom: max(18px, env(safe-area-inset-bottom));
  font-size: 11px;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.35);
}

/* =========================================================
   SCORE
   ========================================================= */

.best-score {
  color: rgba(255, 255, 255, 0.6);
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-top: -8px;
  margin-bottom: 18px;
  font-size: clamp(11px, 2.2vw, 13px);
}

.stat-row {
  display: flex;
  gap: 16px;
  align-items: baseline;
  font-weight: 800;
  font-size: clamp(20px, 5vw, 28px);
  margin-bottom: 28px;
  color: #39ffce;
}

.stat-row span:first-child {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 700;
  letter-spacing: 0.1em;
}

/* =========================================================
   MUTE BUTTON
   ========================================================= */

.icon-btn {
  position: absolute;
  top: max(16px, env(safe-area-inset-top));
  right: 16px;
  z-index: 5;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  width: 40px;
  height: 40px;
  font-size: 18px;
  color: #fff;
  cursor: pointer;
  transition:
    background 0.12s ease,
    transform 0.12s ease;
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.16);
}

.icon-btn:active {
  transform: scale(0.92);
}

/* =========================================================
   TOAST
   ========================================================= */

#toast {
  position: absolute;
  top: max(
    64px,
    calc(env(safe-area-inset-top) + 48px)
  );
  left: 50%;
  transform: translateX(-50%);
  z-index: 6;
  background: rgba(12, 8, 30, 0.9);
  border: 1px solid rgba(57, 255, 206, 0.4);
  color: #39ffce;
  font-weight: 700;
  font-size: clamp(12px, 2.5vw, 15px);
  padding: 10px 18px;
  border-radius: 999px;
  max-width: 90%;
  text-align: center;
  box-shadow: 0 0 24px rgba(57, 255, 206, 0.25);
}

/* =========================================================
   CHARACTER SELECT
   ========================================================= */

.character-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: min(360px, 90vw);
  margin-bottom: 20px;
  max-height: 50vh;
  overflow-y: auto;
}

.character-card {
  font-family: inherit;
  text-align: left;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 12px;
  padding: 12px 16px;
  color: #fff;
  cursor: pointer;
  transition:
    background 0.12s ease,
    border-color 0.12s ease;
}

.character-card:hover {
  background: rgba(255, 255, 255, 0.1);
}

.character-card.selected {
  border-color: #39ffce;
  box-shadow:
    0 0 16px rgba(57, 255, 206, 0.3);
}

.character-card.locked {
  opacity: 0.5;
  cursor: not-allowed;
}

.character-name {
  font-weight: 800;
  letter-spacing: 0.03em;
}

.character-tagline {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 2px;
}

/* =========================================================
   TESTNET
   ========================================================= */

.testnet-status {
  width: min(320px, 90vw);
  margin-bottom: 14px;
}

.stat-row-sm {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-row-sm span:first-child {
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.08em;
}

.stat-row-sm span:last-child {
  color: #39ffce;
  font-weight: 700;
}

.notice {
  width: min(360px, 90vw);
  background: rgba(255, 77, 109, 0.12);
  border: 1px solid rgba(255, 77, 109, 0.4);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 12px;
  margin-bottom: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.unlock-list {
  width: min(320px, 90vw);
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
  max-height: 30vh;
  overflow-y: auto;
}

.unlock-row {
  font-size: 12px;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.8);
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  padding: 6px 10px;
}

/* =========================================================
   MOBILE
   ========================================================= */

@media (max-width: 500px) {
  .screen {
    padding: 18px;
  }

  .title {
    font-size: clamp(36px, 12vw, 56px);
  }

  .desc {
    margin-bottom: 22px;
  }

  .btn-primary {
    padding: 14px 40px;
  }

  .menu-row {
    width: 100%;
    max-width: 360px;
  }

  .menu-row .btn-secondary {
    flex: 1 1 auto;
  }

  #day-night-btn {
    margin-top: 12px;
  }

  #home-btn {
    padding: 10px 28px;
  }

  .credit {
    bottom: max(12px, env(safe-area-inset-bottom));
  }
}