/* ベース */
:root {
  color-scheme: dark light;
  --bg: #050012;
  --bg-soft: #120733;
  --accent: #9b5cff;
  --accent-soft: rgba(155, 92, 255, 0.18);
  --accent-strong: #e3c2ff;
  --text: #f7f5ff;
  --text-muted: #a6a0c0;
  --danger: #ff4d7a;
  --radius-lg: 20px;
  --radius-md: 14px;
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.5);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: radial-gradient(circle at top, #241b57 0, #050012 55%, #000 100%);
  color: var(--text);
  overflow: hidden;
  position: fixed;
  top: 0;
  left: 0;
  overscroll-behavior: none;
  /* iOS は -webkit-user-select: none だけでは長押しの虫眼鏡（選択ルーペ）が出る。
     -webkit-touch-callout: none まで指定して初めて止まる */
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

body {
  display: flex;
  justify-content: center;
  align-items: stretch;
}

#app {
  width: 100%;
  max-width: 520px;
  min-height: 100vh;
  padding: 12px 12px 18px;
  display: flex;
  flex-direction: column;
}

#error-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 6px 10px;
  font-size: 0.8rem;
  background: rgba(239, 68, 68, 0.9);
  color: #fef2f2;
  text-align: center;
  display: none;
}

.screen {
  display: none;
  flex: 1;
}

.screen--active {
  display: flex;
  flex-direction: column;
}

/* トップ画面レイアウト */
.header {
  position: relative;
  text-align: center;
  padding-top: 8px;
}

.home-logo-link {
  position: absolute;
  top: 0;
  left: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  text-decoration: none;
}

.home-logo-image {
  display: block;
  width: clamp(56px, 14vw, 78px);
  height: auto;
}

.title {
  margin: 0;
  font-size: clamp(1.6rem, 4.6vw, 2.1rem);
  letter-spacing: 0.08em;
  color: var(--accent-strong);
  text-shadow: 0 0 18px rgba(157, 93, 255, 0.8);
  animation: title-float 3.6s ease-in-out infinite;
}

.hero {
  margin-top: 14px;
  display: flex;
  justify-content: center;
}

.hero-character {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.hero-image {
  display: block;
  width: 180px;
  max-width: 40%;
  height: auto;
  border-radius: 30px;
  background: radial-gradient(circle at 25% 15%, #ffe3ff 0, #9b5cff 42%, #2b135c);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.65);
  object-fit: contain;
}

.character-illustration {
  width: 150px;
  height: 150px;
  border-radius: 30px;
  background: radial-gradient(circle at 25% 15%, #ffe3ff 0, #9b5cff 42%, #2b135c);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.65);
  position: relative;
  overflow: hidden;
}

.character-body {
  position: absolute;
  width: 64px;
  height: 80px;
  border-radius: 32px;
  background: linear-gradient(180deg, #f9f0ff, #d3bfff);
  left: 50%;
  top: 48%;
  transform: translate(-50%, -50%);
}

.character-drill {
  position: absolute;
  width: 24px;
  height: 90px;
  background: linear-gradient(180deg, #c9b3ff, #7e4aff);
  left: 68%;
  top: 35%;
  border-radius: 40px;
  transform: rotate(18deg);
  box-shadow: 0 0 18px rgba(255, 255, 255, 0.4);
}

.character-drill::after {
  content: "";
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 12px solid transparent;
  border-right: 12px solid transparent;
  border-top: 22px solid #f0e8ff;
  filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.4));
}

.hero-caption {
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.form-section {
  margin-top: 12px;
  padding: 14px 14px 16px;
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at top left, rgba(155, 92, 255, 0.25), rgba(16, 6, 46, 0.9));
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.label {
  font-size: 0.82rem;
  color: var(--accent-strong);
}

.input {
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid rgba(227, 194, 255, 0.4);
  background: rgba(5, 0, 24, 0.9);
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  /* 入力欄だけは選択・コピー・ペーストできるように戻す */
  -webkit-touch-callout: default;
  -webkit-user-select: text;
  user-select: text;
}

.input::placeholder {
  color: rgba(166, 160, 192, 0.8);
}

.input.invalid {
  border-color: #ff6b8a;
  box-shadow: 0 0 0 3px rgba(255, 107, 138, 0.3);
  animation: nickShake 0.4s;
}

.nickname-error {
  min-height: 1.1em;
  margin-top: 2px;
  color: #ff6b8a;
  font-size: 0.8rem;
  font-weight: 700;
  text-align: center;
}

@keyframes nickShake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

.input:focus {
  border-color: var(--accent-strong);
  box-shadow: 0 0 0 1px rgba(155, 92, 255, 0.7);
}

.button {
  margin-top: 6px;
  padding: 10px 16px;
  border-radius: 999px;
  border: none;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.08s ease-out, box-shadow 0.08s ease-out,
    background 0.12s ease-out, opacity 0.12s ease-out;
}

.button--primary {
  background: linear-gradient(135deg, #f29bff, #9b5cff);
  color: #0b0014;
  box-shadow: 0 12px 28px rgba(155, 92, 255, 0.6);
}

.button--primary:active {
  transform: translateY(1px) scale(0.98);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.7);
}

.button:disabled {
  opacity: 0.55;
  cursor: default;
  box-shadow: none;
}

.ranking-section {
  margin-top: 18px;
  padding: 14px 12px 6px;
  border-radius: var(--radius-lg);
  background: rgba(6, 2, 28, 0.92);
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
  min-height: 0;
}

.tabs {
  display: flex;
  gap: 6px;
  padding: 3px;
  border-radius: 999px;
  background: rgba(19, 8, 55, 0.95);
}

.tab {
  flex: 1;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  padding: 6px;
  font-size: 0.82rem;
  cursor: pointer;
}

.tab--active {
  background: radial-gradient(circle at top, #f4e4ff, #9b5cff);
  color: #160428;
  font-weight: 600;
}

.ranking-lists {
  flex: 1;
  min-height: 0;
}

.ranking-list {
  display: none;
  height: 100%;
}

.ranking-list--active {
  display: block;
}

.ranking-items {
  list-style: none;
  margin: 0;
  padding: 3px 0 6px;
  max-height: 230px;
  overflow-y: auto;
}

.ranking-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px;
  border-radius: var(--radius-md);
  background: linear-gradient(
    90deg,
    rgba(19, 8, 55, 0.95),
    rgba(33, 12, 85, 0.9)
  );
  color: var(--text);
  font-size: 0.9rem;
}

.ranking-item + .ranking-item {
  margin-top: 6px;
}

.ranking-item--placeholder {
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.ranking-rank {
  min-width: 32px;
  font-weight: 700;
}

.ranking-name {
  flex: 1;
  padding: 0 8px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ranking-score {
  font-weight: 600;
}

.footer {
  margin-top: 10px;
  text-align: center;
}

.footer-note {
  margin: 0;
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* ゲーム画面 */
.game-header {
  text-align: center;
  padding: 6px 0 2px;
}

/* Canvas 上オーバーレイ：深さ表示（〇m） */
.depth-overlay {
  position: absolute;
  top: 88px;
  left: 0;
  right: 0;
  padding: 14px 12px 10px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  pointer-events: none;
  z-index: 2;
}

.depth-value {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  font-size: clamp(3.4rem, 9vw, 5.4rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  color: #ff1a1a;
  text-shadow:
    0 0 2px #000,
    0 0 4px #000,
    1px 1px 2px #000,
    -1px -1px 2px #000,
    2px 2px 4px rgba(0, 0, 0, 0.9),
    0 0 12px rgba(255, 0, 0, 0.8),
    0 0 24px rgba(255, 50, 50, 0.6),
    0 0 36px rgba(255, 0, 0, 0.4);
}

/* 数字部分：等幅フォント＋固定幅で「m」の位置を1pxも動かさない */
#depth-value.depth-number {
  font-family: "Share Tech Mono", "Roboto Mono", "Courier New", Courier, monospace;
  display: inline-block;
  width: 4ch;
  min-width: 4ch;
  text-align: right;
}

.depth-unit {
  font-family: "Orbitron", "Rajdhani", "Share Tech Mono", "Segoe UI", sans-serif;
  font-size: 0.9em;
}

@media (min-width: 768px) {
  .depth-value {
    font-size: clamp(3.8rem, 7vw, 5.8rem);
  }
}

.ranking-item--gold {
  background: linear-gradient(90deg, #facc15, #b45309);
  color: #1f2933;
}

.ranking-item--silver {
  background: linear-gradient(90deg, #e5e7eb, #9ca3af);
  color: #111827;
}

.ranking-item--bronze {
  background: linear-gradient(90deg, #f97316, #7c2d12);
  color: #111827;
}

@keyframes title-float {
  0% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
  100% {
    transform: translateY(0);
  }
}

.game-section {
  position: relative;
  flex: 1;
  min-height: 0;
  margin-top: 10px;
  border-radius: 18px;
  overflow: hidden;
  background: #5fc4ff;
  box-shadow: var(--shadow-soft);
}

/* 宝箱取得時の黄金オーラ演出（Canvasの外側フレーム） */
.game-section.gold-aura-effect::before {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: inherit;
  background:
    radial-gradient(circle at 20% 0%, rgba(254, 249, 195, 0.8), transparent 55%),
    radial-gradient(circle at 80% 10%, rgba(253, 224, 71, 0.85), transparent 60%),
    radial-gradient(circle at 50% 100%, rgba(251, 191, 36, 0.75), transparent 70%);
  mix-blend-mode: screen;
  opacity: 0;
  pointer-events: none;
  animation: gold-aura-wave 3s ease-out forwards;
  z-index: 3;
}

@keyframes gold-aura-wave {
  0% {
    opacity: 0;
    transform: scale(0.96);
  }
  15% {
    opacity: 1;
    transform: scale(1);
  }
  60% {
    opacity: 0.9;
  }
  100% {
    opacity: 0;
    transform: scale(1.04);
  }
}

#game-canvas {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  -webkit-user-select: none;
  image-rendering: pixelated;
  transform: translateZ(0);
  will-change: transform;
  backface-visibility: hidden;
}

/* 「Congratulations!」超豪華テキスト演出 */
.super-flashy-congrats {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transform: scale(0.8);
  transition:
    opacity 0.35s ease-out,
    transform 0.35s ease-out;
  z-index: 4;
}

.super-flashy-congrats__inner {
  font-family: "Orbitron", "Share Tech Mono", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  /* 画面幅に追従させてはみ出しを防ぐ */
  font-size: clamp(1.6rem, 6vw, 2.6rem);
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 10px 26px;
  max-width: 90%;
  margin: 0 auto;
  border-radius: 999px;
  background:
    linear-gradient(120deg, #fef9c3, #fde68a, #fbbf24, #f97316, #fef9c3);
  background-size: 260% 260%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow:
    0 0 18px rgba(255, 255, 255, 0.95),
    0 0 28px rgba(250, 204, 21, 0.95),
    0 0 48px rgba(245, 158, 11, 0.95),
    0 0 72px rgba(180, 83, 9, 0.95);
  box-shadow:
    0 0 0 2px rgba(250, 250, 210, 0.8),
    0 0 30px rgba(250, 204, 21, 0.9),
    0 0 60px rgba(245, 158, 11, 0.9);
  animation:
    super-congrats-pulse 0.4s ease-out forwards,
    super-congrats-shimmer 2.4s linear infinite,
    super-congrats-jitter 0.28s ease-in-out infinite alternate;
}

.super-flashy-congrats--visible {
  opacity: 1;
  transform: scale(1);
}

@keyframes super-congrats-pulse {
  0% {
    transform: scale(0.3);
    filter: blur(6px);
  }
  60% {
    transform: scale(1.05);
    filter: blur(0);
  }
  100% {
    transform: scale(1);
    filter: blur(0);
  }
}

@keyframes super-congrats-shimmer {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 200% 50%;
  }
}

@keyframes super-congrats-jitter {
  0% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(-1px, 1px, 0);
  }
  100% {
    transform: translate3d(1px, -1px, 0);
  }
}

/* ゲームオーバーオーバーレイ（モバイル最適化・パープル基調） */
.gameover-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top, rgba(76, 29, 149, 0.85), rgba(15, 6, 45, 0.96));
  backdrop-filter: blur(10px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease-out;
  z-index: 50;
}

.gameover-overlay--visible {
  opacity: 1;
  pointer-events: auto;
}

.gameover-dialog {
  width: 100%;
  max-width: 420px;
  margin: 0 16px;
  padding: 20px 18px 22px;
  border-radius: 20px;
  background: radial-gradient(circle at top, #a855f7, #4c1d95);
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.75);
  text-align: center;
  color: #fdf4ff;
}

.gameover-title {
  margin: 0 0 14px;
  font-size: 2.4rem;
  letter-spacing: 0.12em;
  text-shadow:
    0 0 10px rgba(250, 250, 255, 0.95),
    0 0 22px rgba(192, 132, 252, 0.9),
    0 0 40px rgba(147, 51, 234, 0.9),
    0 0 60px rgba(88, 28, 135, 0.95);
}

.gameover-score {
  margin: 6px 0 6px;
  font-size: 1.4rem;
  font-weight: 700;
}

.gameover-score-label {
  color: #fdfdfd;
}

.gameover-score-value {
  margin-left: 4px;
  color: #fde68a;
  text-shadow:
    0 0 4px rgba(0, 0, 0, 0.7),
    0 0 10px rgba(250, 204, 21, 0.9),
    0 0 18px rgba(217, 119, 6, 0.9);
}

.gameover-badge {
  margin: 8px 0 12px;
  font-size: 1.4rem;
  font-weight: 800;
  color: #fef9c3;
  text-shadow:
    0 0 4px rgba(255, 255, 255, 0.9),
    0 0 10px rgba(251, 191, 36, 0.9),
    0 0 22px rgba(245, 158, 11, 0.9);
  animation:
    new-record-bounce 0.9s ease-out infinite,
    new-record-rainbow 2.2s linear infinite;
}

.gameover-badge--hidden {
  display: none;
}

@keyframes new-record-bounce {
  0%,
  100% {
    transform: translateY(0) scale(1);
  }
  30% {
    transform: translateY(-6px) scale(1.08);
  }
  60% {
    transform: translateY(2px) scale(0.98);
  }
}

@keyframes new-record-rainbow {
  0% {
    color: #fef9c3;
  }
  25% {
    color: #bfdbfe;
  }
  50% {
    color: #f9a8d4;
  }
  75% {
    color: #a7f3d0;
  }
  100% {
    color: #fef9c3;
  }
}

.gameover-actions {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.gameover-button {
  padding: 14px 20px;
  border-radius: 999px;
  border: none;
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  min-width: 100%;
}

.gameover-button--primary {
  background: linear-gradient(135deg, #f9a8ff, #c084fc);
  color: #0b0014;
  box-shadow: 0 12px 28px rgba(192, 132, 252, 0.7);
}

.gameover-button--secondary {
  background: rgba(15, 23, 42, 0.9);
  color: #e5e7eb;
  border: 1px solid rgba(226, 232, 240, 0.45);
}

/* PC向けの少しだけ広いレイアウト調整 */
@media (min-width: 768px) {
  #app {
    padding: 20px 18px 24px;
  }

  .form-section {
    margin-top: 24px;
  }

  .ranking-section {
    margin-top: 20px;
  }
}