:root {
  --pk-red: #ff1c1c;
  --pk-blue: #3b4cca;
  --pk-yellow: #ffde00;
  --pk-gold: #b3a125;
  --glass-bg: rgba(255, 255, 255, 0.15);
  --glass-border: rgba(255, 255, 255, 0.2);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
}

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

.hidden {
  display: none !important;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: #000;
  color: var(--text-primary);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
}

.splash-container {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #000;
  z-index: 1000;
  transition: opacity 1s ease-in-out;
}

.splash-container.splash-rush-logos .splash-screen {
  transition: opacity 0.14s ease-out, transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.splash-container.splash-rush-logos {
  transition: opacity 0.45s ease-in-out;
}

.splash-load-dock {
  position: absolute;
  left: 50%;
  bottom: 1.25rem;
  transform: translateX(-50%);
  width: min(420px, calc(100vw - 2rem));
  z-index: 2;
  pointer-events: none;
  text-align: center;
}

.splash-load-dock__bar {
  height: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  overflow: hidden;
  margin-bottom: 0.45rem;
}

.splash-load-dock__bar-inner {
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--pk-blue), var(--pk-red));
  transition: width 0.12s ease-out;
}

.splash-load-dock__text {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 0.35rem;
}

.splash-load-dock__hint {
  font-size: 0.68rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: 0.04em;
}

.splash-file-input-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.splash-screen {
  position: absolute;
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.8s ease-in-out, transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
  text-align: center;
  pointer-events: none;
}

.splash-screen.active {
  opacity: 1;
  transform: scale(1);
}

.splash-grid {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  align-items: center;
}

.splash-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.splash-disclaimer {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  font-weight: 600;
}

.splash-logo {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  text-transform: uppercase;
}

.nintendo-logo {
  font-family: serif;
  border: 3px solid #fff;
  padding: 0.4rem 1.5rem;
  border-radius: 100px;
  font-size: 3rem;
  font-weight: bold;
}

.game-freak-logo {
  font-style: italic;
  font-weight: 900;
  font-size: 2rem;
}

/* Main Menu */
.main-menu {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  padding-right: 8%;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 1.5s ease-in-out;
}

.main-menu.visible {
  opacity: 1;
  pointer-events: auto;
}

.splash-language-row {
  position: absolute;
  top: 2rem;
  right: 8%;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 4;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.88);
}

.splash-language-row label {
  font-weight: 600;
  letter-spacing: 0.04em;
}

.splash-language-select {
  min-width: 140px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.26);
  background: rgba(14, 16, 24, 0.82);
  color: #fff;
  padding: 0.35rem 0.55rem;
}

.background-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  filter: brightness(0.7) contrast(1.1);
}

.menu-overlay {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at center, transparent 0%, rgba(0,0,0,0.4) 100%);
  z-index: 2;
  pointer-events: none;
}

.game-title {
  margin-bottom: 4rem;
  text-align: right;
  animation: titleFloat 4s ease-in-out infinite;
}

.game-title h1 {
  font-size: 5rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.04em;
  background: linear-gradient(to bottom, #fff, #ccc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 10px 20px rgba(0,0,0,0.5));
}

.game-title .subtitle {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--pk-yellow);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-top: -0.5rem;
  display: block;
}

.menu-options {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 300px;
}

.menu-button {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  padding: 1.2rem 2rem;
  border-radius: 12px;
  color: #fff;
  font-size: 1.2rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.menu-button:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateX(10px);
  border-color: #fff;
}

.menu-button .icon {
  width: 24px;
  height: 24px;
  opacity: 0.5;
  transition: opacity 0.3s ease;
}

.menu-button:hover .icon {
  opacity: 1;
}

.splash-continue-btn {
  background: linear-gradient(135deg, #2e7d6b, #1b5e4a);
  border: 1px solid rgba(144, 255, 214, 0.35);
  box-shadow: 0 8px 18px rgba(20, 80, 64, 0.35);
}

.splash-continue-btn:hover {
  background: linear-gradient(135deg, #38a090, #2e7d6b);
  box-shadow: 0 12px 24px rgba(20, 100, 80, 0.42);
}

.play-button {
  background: linear-gradient(135deg, var(--pk-red), #d32f2f);
  border: none;
  box-shadow: 0 10px 20px rgba(211, 47, 47, 0.3);
}

.play-button:hover {
  background: linear-gradient(135deg, #ff5252, var(--pk-red));
  box-shadow: 0 15px 30px rgba(211, 47, 47, 0.4);
}

.press-start {
  position: absolute;
  bottom: 15%;
  right: 8%;
  font-size: 1.2rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: #fff;
  animation: blink 1.5s ease-in-out infinite;
  cursor: pointer;
}

@keyframes titleFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes blink {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

.menu-footer {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.5;
  width: 100%;
  padding: 0 2rem;
  z-index: 5;
}

.disclaimer-row {
  margin-bottom: 0.2rem;
}

.free-distribution {
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.5rem;
}

.biome-info {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  padding: 0.8rem 1.2rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.biome-info.visible {
  opacity: 1;
}

.biome-swatch {
  width: 12px;
  height: 12px;
  border-radius: 2px;
}

.loading-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 4px;
  background: var(--pk-red);
  width: 0%;
  transition: width 10s linear;
}

html[lang="ja-JP"] body {
  font-family: 'Inter', 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Yu Gothic UI', sans-serif;
}

html[lang="ja-JP"] .splash-disclaimer,
html[lang="ja-JP"] .game-title .subtitle,
html[lang="ja-JP"] .menu-button,
html[lang="ja-JP"] .press-start,
html[lang="ja-JP"] .free-distribution {
  text-transform: none;
  letter-spacing: 0.02em;
}

html[lang="ja-JP"] .menu-options {
  width: 360px;
}