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

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  background: #0f172a;
  font-family: system-ui, -apple-system, 'Segoe UI', Arial, sans-serif;
}

.viewport-shell {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100dvh;
}

#game-container {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  background: transparent;
}

.menu-backdrop {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-color: #1e293b;
  background-image: url('assets/splash/spring-temple.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.menu-backdrop[hidden] {
  display: none !important;
}

#game-container canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.control-panel {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  pointer-events: none;
}

.control-panel:not([hidden]):not(.control-panel--hud) {
  pointer-events: auto;
}

.control-panel--landing {
  justify-content: stretch;
  align-items: stretch;
  background: linear-gradient(
    180deg,
    rgba(15, 23, 42, 0) 0%,
    rgba(15, 23, 42, 0) 72%,
    rgba(15, 23, 42, 0.12) 90%,
    rgba(15, 23, 42, 0.28) 100%
  );
  pointer-events: none;
}

.control-panel--landing .control-panel-content {
  pointer-events: auto;
}

.control-panel--hud {
  justify-content: flex-start;
  align-items: stretch;
  background: transparent;
  pointer-events: none;
}

.control-panel--hud .control-panel-content {
  pointer-events: auto;
}

.control-panel--modal {
  justify-content: center;
  align-items: center;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(6px);
  pointer-events: auto;
}

.control-panel--modal .control-panel-content {
  pointer-events: auto;
}

.control-panel[hidden] {
  display: none !important;
}

.control-panel-content {
  display: flex;
  flex-direction: column;
  width: 100%;
}

.control-panel--landing .control-panel-content {
  align-items: stretch;
  gap: 0;
  padding: 0;
  max-width: none;
  margin: 0;
  height: 100%;
}

.control-panel--modal .control-panel-content {
  align-items: center;
  gap: 16px;
  padding: 24px 20px 32px;
  max-width: 720px;
  margin: 0 auto;
  height: auto;
}

.control-panel--hud .control-panel-content {
  padding: 0;
  max-width: none;
}

.ui-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.15;
  color: #f8fafc;
  text-align: center;
}

.ui-title--success {
  color: #4ade80;
}

.ui-title--danger {
  color: #f87171;
}

.ui-subtitle {
  font-size: 15px;
  line-height: 1.5;
  color: #94a3b8;
  text-align: center;
  max-width: 360px;
}

.ui-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
}

.ui-label {
  font-size: 13px;
  font-weight: 600;
  color: #cbd5e1;
  letter-spacing: 0.04em;
}

.ui-input {
  font-size: 16px;
  line-height: 1.4;
  padding: 12px 14px;
  width: 100%;
  background: rgba(15, 23, 42, 0.8);
  color: #f8fafc;
  border: 1px solid rgba(248, 250, 252, 0.15);
  border-radius: 8px;
  outline: none;
  transition: border-color 0.15s ease;
}

.ui-input:focus {
  border-color: #f472b6;
}

.ui-input::placeholder {
  color: #64748b;
}

.ui-button-row {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
}

.ui-button {
  font-size: 17px;
  font-weight: 600;
  line-height: 1;
  padding: 14px 24px;
  width: 100%;
  background: linear-gradient(180deg, #475569 0%, #334155 100%);
  color: #f8fafc;
  border: 1px solid rgba(248, 250, 252, 0.15);
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease, opacity 0.15s ease;
}

.ui-button:hover:not(:disabled) {
  background: linear-gradient(180deg, #64748b 0%, #475569 100%);
  transform: translateY(-1px);
}

.ui-button--primary {
  background: linear-gradient(180deg, #f472b6 0%, #db2777 100%);
  border-color: rgba(251, 207, 232, 0.4);
}

.ui-button--primary:hover:not(:disabled) {
  background: linear-gradient(180deg, #f9a8d4 0%, #ec4899 100%);
}

.ui-button:disabled,
.ui-button--disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.ui-coming-soon {
  font-size: 12px;
  font-weight: 500;
  color: #64748b;
  text-align: center;
  font-style: italic;
}

.ui-stub-button-wrap {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 100%;
}

.ui-landing-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  height: 100%;
  min-height: 100%;
  padding: clamp(16px, 3vh, 28px) clamp(12px, 2vw, 20px) clamp(12px, 2vh, 20px);
}

.ui-landing__title {
  font-family:
    'Zen Antique',
    'Shippori Mincho B1',
    'Hiragino Mincho ProN',
    'Yu Mincho',
    'MS PMincho',
    serif;
  font-size: clamp(1.65rem, 4.2vw, 2.75rem);
  font-weight: 400;
  line-height: 1.15;
  text-align: center;
  letter-spacing: 0.14em;
  text-transform: none;
  color: #fff8f0;
  text-shadow:
    0 1px 0 rgba(255, 255, 255, 0.25),
    0 2px 6px rgba(0, 0, 0, 0.55),
    0 8px 28px rgba(0, 0, 0, 0.35),
    0 0 40px rgba(244, 114, 182, 0.22);
  margin: 0 auto;
  max-width: 900px;
  flex-shrink: 0;
}

.ui-landing__best-score {
  margin: 0.75rem 0 0;
  text-align: center;
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fbbf24;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.45);
}

.ui-landing__panel {
  width: 100%;
  max-width: min(680px, 94vw);
  margin: auto auto 0;
  padding: 14px 18px 16px;
  background: rgba(15, 23, 42, 0.78);
  border: 1px solid rgba(248, 250, 252, 0.12);
  border-radius: 14px;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.ui-landing {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px 24px;
  width: 100%;
  align-items: center;
}

.ui-landing__start {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.ui-landing__rules {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 220px;
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.55);
  border: 1px solid rgba(248, 250, 252, 0.1);
}

.ui-landing__rules-title {
  margin: 0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #94a3b8;
}

.ui-landing__rules-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ui-landing__rules-label {
  font-size: 11px;
  font-weight: 600;
  color: #cbd5e1;
}

.ui-landing__rules-hearts {
  font-size: 18px;
  line-height: 1;
  color: #f87171;
  letter-spacing: 2px;
}

.ui-landing__rules-kit {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ui-health-kit-icon {
  position: relative;
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  background: #22c55e;
  border: 2px solid rgba(255, 255, 255, 0.8);
  border-radius: 2px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
}

.ui-health-kit-icon::before,
.ui-health-kit-icon::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  background: #ffffff;
  border-radius: 1px;
  transform: translate(-50%, -50%);
}

.ui-health-kit-icon::before {
  width: 3px;
  height: 10px;
}

.ui-health-kit-icon::after {
  width: 10px;
  height: 3px;
}

.ui-landing__rules-text {
  margin: 0;
  font-size: 11px;
  line-height: 1.4;
  color: #e2e8f0;
}

.ui-landing__rules-text--muted {
  color: #94a3b8;
  font-size: 10px;
}

.ui-landing__controls {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.ui-button--start {
  min-width: 160px;
  min-height: 46px;
  font-size: 16px;
  padding: 12px 24px;
  white-space: nowrap;
}

.ui-minimal-hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 10px 16px;
  background: rgba(15, 23, 42, 0.75);
  border-bottom: 1px solid rgba(248, 250, 252, 0.1);
  backdrop-filter: blur(6px);
}

.ui-minimal-hud__stats {
  display: flex;
  align-items: center;
  gap: 20px;
  flex: 1;
}

.ui-minimal-hud__stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.ui-minimal-hud__label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #94a3b8;
}

.ui-minimal-hud__value {
  font-size: 16px;
  font-weight: 700;
  color: #f8fafc;
}

.ui-minimal-hud__value--best {
  color: #fbbf24;
}

.ui-minimal-hud__pause {
  width: auto;
  min-width: 88px;
  padding: 10px 16px;
  font-size: 14px;
}

.ui-minimal-hud__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.ui-mute-button {
  min-width: 44px;
  min-height: 44px;
  width: 44px;
  height: 44px;
  padding: 0;
  font-size: 18px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  touch-action: manipulation;
}

.ui-mobile-controls {
  display: none;
  width: 100%;
  gap: 8px;
  padding: 8px 16px 12px;
  background: rgba(15, 23, 42, 0.85);
  border-top: 1px solid rgba(248, 250, 252, 0.08);
}

.ui-mobile-controls__btn {
  flex: 1;
  min-height: 44px;
  min-width: 44px;
  padding: 10px 8px;
  font-size: 13px;
  touch-action: manipulation;
}

.ui-minimal-hud__stat--lives {
  align-items: flex-start;
}

.ui-life-hearts {
  display: flex;
  gap: 4px;
}

.ui-life-heart {
  font-size: 18px;
  line-height: 1;
}

.ui-life-heart--full {
  color: #ef4444;
}

.ui-life-heart--empty {
  color: #475569;
  opacity: 0.45;
}

.ui-controls-legend {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 0;
}

.ui-controls-legend__title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #94a3b8;
  text-align: left;
  margin-bottom: 2px;
}

.ui-controls-legend__list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 12px;
}

.ui-controls-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 8px;
  padding: 0;
}

.ui-controls-row__keys {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 4px;
  flex-shrink: 0;
}

.ui-controls-row__action {
  display: flex;
  flex-direction: row;
  align-items: baseline;
  gap: 4px;
  min-width: 0;
  text-align: left;
}

.ui-controls-row__label {
  font-size: 12px;
  font-weight: 600;
  color: #e2e8f0;
  line-height: 1.2;
}

.ui-controls-row__hint {
  font-size: 10px;
  font-weight: 500;
  color: #64748b;
  font-style: italic;
  text-transform: lowercase;
}

.ui-controls-legend__mobile {
  font-size: 10px;
  line-height: 1.35;
  color: #64748b;
  text-align: left;
  padding-top: 4px;
  border-top: 1px solid rgba(248, 250, 252, 0.08);
  grid-column: 1 / -1;
}

.ui-kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  padding: 0 6px;
  font-family: inherit;
  font-size: 10px;
  font-weight: 700;
  line-height: 1;
  color: #f8fafc;
  background: linear-gradient(180deg, #64748b 0%, #475569 55%, #334155 100%);
  border: 1px solid rgba(248, 250, 252, 0.22);
  border-bottom: 2px solid #1e293b;
  border-radius: 5px;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.12) inset,
    0 1px 3px rgba(0, 0, 0, 0.25);
}

.ui-kbd--wide {
  min-width: 44px;
  padding: 0 8px;
  font-size: 9px;
  letter-spacing: 0.02em;
}

@media (max-width: 640px), (pointer: coarse) {
  .ui-mobile-controls {
    display: flex;
  }

  .ui-minimal-hud {
    flex-wrap: wrap;
    gap: 8px;
    padding-bottom: 0;
  }

  .ui-minimal-hud__stats {
    gap: 12px;
    flex: 1 1 100%;
  }
}

@media (max-width: 640px) {
  .ui-landing {
    grid-template-columns: 1fr;
    gap: 12px;
    justify-items: center;
  }

  .ui-controls-legend__list {
    grid-template-columns: 1fr;
  }

  .ui-landing-screen {
    padding: 16px 12px 12px;
  }

  .ui-landing__panel {
    padding: 12px 14px;
  }

  .ui-button--start {
    width: 100%;
  }

  .control-panel--modal .control-panel-content {
    max-width: 100%;
    padding: 16px;
  }

  .ui-minimal-hud {
    flex-wrap: wrap;
    gap: 8px;
  }

  .ui-minimal-hud__stats {
    gap: 12px;
  }
}