/* style.css */

/* カラー変数定義 - 洗練されたダーク＆ネオンテーマ */
:root {
  --bg-color: #080b10;
  --panel-bg: rgba(16, 20, 30, 0.75);
  --panel-border: rgba(255, 255, 255, 0.06);
  --primary-color: #00f0ff; /* ネオンブルー */
  --primary-glow: rgba(0, 240, 255, 0.35);
  --secondary-color: #bd00ff; /* ネオンマゼンタ/パープル */
  --secondary-glow: rgba(189, 0, 255, 0.35);
  --success-color: #39ff14; /* ネオングリーン */
  --success-glow: rgba(57, 255, 20, 0.3);
  --error-color: #ff2a5f; /* ネオンレッド/ピンク */
  --error-glow: rgba(255, 42, 95, 0.4);
  
  --font-title: 'Outfit', 'Inter', 'Noto Sans JP', sans-serif;
  --font-body: 'Inter', 'Noto Sans JP', sans-serif;
}

/* 全体の初期設定 */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-color);
  color: #e2e8f0;
  font-family: var(--font-body);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  position: relative;
}

/* 背景用の有機的ネオングロウ (奥行きの演出) */
.glow-sphere {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.12;
  transition: all 0.5s ease;
}

.sphere-1 {
  width: 500px;
  height: 500px;
  background: var(--primary-color);
  top: -10%;
  left: -5%;
}

.sphere-2 {
  width: 600px;
  height: 600px;
  background: var(--secondary-color);
  bottom: -15%;
  right: -5%;
}

/* メインコンテナ */
.game-container {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 28px;
  padding: 45px;
  width: 90%;
  max-width: 780px;
  height: 540px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  z-index: 1;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

/* ミス時の赤枠ネオンフラッシュ */
@keyframes miss-shake-glow {
  0% {
    border-color: var(--error-color);
    box-shadow: 0 0 35px var(--error-glow), 0 24px 60px rgba(0, 0, 0, 0.4);
    transform: translateX(0);
  }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(5px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(3px); }
  100% {
    border-color: var(--panel-border);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
    transform: translateX(0);
  }
}

.game-container.miss-flash {
  animation: miss-shake-glow 0.35s cubic-bezier(.36,.07,.19,.97) both;
}

/* 画面のフェード表示切り替え */
.screen {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  width: 100%;
  animation: screenFadeIn 0.45s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.screen.active {
  display: flex;
}

@keyframes screenFadeIn {
  from {
    opacity: 0;
    transform: scale(0.97) translateY(8px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* ========================================== */
/* 1. スタート画面 (IDLE)                     */
/* ========================================== */
.brand {
  text-align: center;
  margin-bottom: 25px;
}

.logo {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 3.8rem;
  letter-spacing: 3px;
  color: #ffffff;
  text-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
  line-height: 1.1;
}

.logo-accent {
  color: var(--primary-color);
  text-shadow: 0 0 20px var(--primary-glow);
}

.tagline {
  font-size: 1.1rem;
  font-weight: 300;
  color: rgba(226, 232, 240, 0.55);
  margin-top: 8px;
  letter-spacing: 2px;
}

.rules-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 20px;
  padding: 24px 30px;
  max-width: 520px;
  margin-bottom: 35px;
  box-shadow: inset 0 2px 10px rgba(255, 255, 255, 0.01);
}

.rules-title {
  font-family: var(--font-title);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 12px;
  letter-spacing: 1.5px;
  text-align: center;
}

.rules-list {
  list-style: none;
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(226, 232, 240, 0.75);
}

.rules-list li {
  margin-bottom: 8px;
  position: relative;
  padding-left: 22px;
}

.rules-list li::before {
  content: "▶";
  font-size: 0.65rem;
  color: var(--primary-color);
  position: absolute;
  left: 2px;
  top: 1px;
}

/* ボタンデザイン */
.btn {
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 2px;
  padding: 16px 42px;
  border-radius: 32px;
  border: none;
  cursor: pointer;
  outline: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #ffffff;
  text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(0, 240, 255, 0.3), 0 12px 30px rgba(189, 0, 255, 0.2);
}

.btn-primary:active {
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  border: 1px solid rgba(0, 240, 255, 0.4);
  color: var(--primary-color);
}

.btn-secondary:hover {
  background: var(--primary-color);
  color: #080b10;
  box-shadow: 0 8px 25px var(--primary-glow);
  transform: translateY(-3px);
}

.btn-secondary:active {
  transform: translateY(-1px);
}

/* ========================================== */
/* 2. ゲームプレイ画面 (PLAYING)              */
/* ========================================== */
.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  margin-bottom: 35px;
}

.stat-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 16px;
  padding: 10px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 110px;
}

.timer-box {
  border-color: rgba(0, 240, 255, 0.2);
}

.stat-label {
  font-size: 0.72rem;
  letter-spacing: 1.5px;
  color: rgba(226, 232, 240, 0.4);
  margin-bottom: 5px;
  font-weight: 600;
}

.stat-number {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.9rem;
  color: #ffffff;
}

/* タイムリミットが少ない時の警告アニメーション */
.timer-box .stat-number.warning {
  color: var(--error-color);
  text-shadow: 0 0 15px var(--error-glow);
  animation: text-pulse 0.9s infinite alternate;
}

@keyframes text-pulse {
  0% { transform: scale(1); }
  100% { transform: scale(1.12); }
}

.stats-group {
  display: flex;
  gap: 15px;
}

.correct-text {
  color: var(--success-color);
  text-shadow: 0 0 15px var(--success-glow);
}

.miss-text {
  color: var(--error-color);
  text-shadow: 0 0 15px var(--error-glow);
}

/* 問題パネル */
.word-card {
  width: 100%;
  text-align: center;
  background: rgba(255, 255, 255, 0.015);
  border: 1px solid rgba(255, 255, 255, 0.025);
  border-radius: 24px;
  padding: 45px 30px;
  margin-bottom: 35px;
  box-shadow: inset 0 4px 30px rgba(0, 0, 0, 0.15);
}

.jp-word {
  font-size: 2.5rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 24px;
  letter-spacing: 1.5px;
}

.romaji-box {
  font-family: var(--font-title);
  font-size: 1.9rem;
  font-weight: 600;
  letter-spacing: 2px;
}

/* ローマ字のスタイル区分 */
.char-typed {
  color: var(--primary-color);
  text-shadow: 0 0 12px var(--primary-glow);
}

/* 現在入力すべき文字（アンダーライン＆ソフトバックグラウンド） */
.char-current {
  color: #ffffff;
  border-bottom: 3px solid var(--primary-color);
  background: rgba(0, 240, 255, 0.08);
  animation: caret-blink 0.8s infinite alternate;
}

@keyframes caret-blink {
  0% { background: rgba(0, 240, 255, 0.04); }
  100% { background: rgba(0, 240, 255, 0.18); }
}

.char-remaining {
  color: rgba(226, 232, 240, 0.22);
}

.keyboard-hint {
  font-size: 0.8rem;
  color: rgba(226, 232, 240, 0.35);
  letter-spacing: 1px;
}

/* ========================================== */
/* 3. リザルト画面 (COMPLETED)                */
/* ========================================== */
.result-header {
  text-align: center;
  margin-bottom: 28px;
}

.result-title {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 2.3rem;
  letter-spacing: 3px;
  background: linear-gradient(90deg, #ffffff, var(--primary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 30px rgba(0, 240, 255, 0.15);
}

.result-subtitle {
  font-size: 0.95rem;
  color: rgba(226, 232, 240, 0.45);
  margin-top: 6px;
  letter-spacing: 1px;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  width: 100%;
  max-width: 640px;
  margin-bottom: 35px;
}

.result-card {
  background: rgba(255, 255, 255, 0.015);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 18px;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.result-card-label {
  font-size: 0.78rem;
  color: rgba(226, 232, 240, 0.45);
  margin-bottom: 8px;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.result-card-value {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 2.3rem;
  color: #ffffff;
}

.text-glow-blue {
  color: var(--primary-color);
  text-shadow: 0 0 15px var(--primary-glow);
}

.text-glow-green {
  color: var(--success-color);
  text-shadow: 0 0 15px var(--success-glow);
}

.details-value {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 1.6rem;
}

.slash {
  color: rgba(226, 232, 240, 0.25);
  font-weight: 300;
  margin: 0 2px;
}
/* ========================================== */
/* 4. 設定・問題管理モーダル                 */
/* ========================================== */

/* スタート画面右下の隠し設定ボタン */
.btn-settings-hidden {
  position: absolute;
  right: 20px;
  bottom: 20px;
  background: transparent;
  border: none;
  color: rgba(226, 232, 240, 0.15);
  font-size: 1.1rem;
  cursor: pointer;
  z-index: 10;
  transition: color 0.3s ease, transform 0.3s ease;
  outline: none;
}

.btn-settings-hidden:hover {
  color: rgba(0, 240, 255, 0.4);
  transform: rotate(45deg);
}

/* モーダル全体のオーバーレイ */
.modal {
  display: none; /* 初期状態は非表示 */
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(8, 11, 16, 0.85);
  backdrop-filter: blur(12px);
  z-index: 100;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal.active {
  display: flex;
  opacity: 1;
}

/* モーダルコンテンツ */
.modal-content {
  background: rgba(18, 24, 38, 0.95);
  border: 1px solid rgba(0, 240, 255, 0.25);
  box-shadow: 0 20px 50px rgba(0, 240, 255, 0.15), inset 0 2px 10px rgba(255, 255, 255, 0.02);
  border-radius: 24px;
  width: 90%;
  max-width: 500px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalSlideIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalSlideIn {
  from {
    transform: translateY(30px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* モーダルヘッダー */
.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-family: var(--font-title);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary-color);
  letter-spacing: 1px;
}

.btn-close {
  background: transparent;
  border: none;
  color: rgba(226, 232, 240, 0.4);
  font-size: 1.8rem;
  cursor: pointer;
  transition: color 0.2s ease;
}

.btn-close:hover {
  color: var(--error-color);
}

/* モーダルボディ */
.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}

.settings-section {
  margin-bottom: 24px;
}

.settings-section h3 {
  font-size: 0.9rem;
  font-weight: 700;
  color: rgba(226, 232, 240, 0.7);
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

/* フォーム関連 */
.form-group {
  margin-bottom: 12px;
  width: 100%;
}

.form-group label {
  font-size: 0.85rem;
  color: rgba(226, 232, 240, 0.55);
  margin-bottom: 6px;
  display: block;
}

.form-group input {
  width: 100%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 10px 14px;
  color: #ffffff;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.form-group input:focus {
  border-color: rgba(0, 240, 255, 0.5);
}

.form-group input::placeholder {
  color: rgba(226, 232, 240, 0.25);
}

.inline-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.inline-group label {
  margin-bottom: 0;
  white-space: nowrap;
}

.inline-group input {
  max-width: 100px;
  text-align: center;
}

/* 問題追加フォームの横並び */
.add-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.btn-sm {
  padding: 10px 24px;
  font-size: 0.85rem;
  border-radius: 12px;
  width: 100%;
}

/* 警告ボックス */
.warning-box {
  background: rgba(255, 0, 110, 0.08);
  border: 1px solid rgba(255, 0, 110, 0.25);
  border-radius: 12px;
  padding: 12px 16px;
  color: var(--error-color);
  font-size: 0.82rem;
  line-height: 1.5;
  margin-bottom: 20px;
}

.warning-box.hidden {
  display: none;
}

/* 登録問題一覧リスト */
.questions-list-wrapper {
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 16px;
  max-height: 220px;
  overflow-y: auto;
  padding: 8px;
}

.questions-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.questions-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.02);
  font-size: 0.88rem;
}

.questions-list li:last-child {
  border-bottom: none;
}

.q-details {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.q-text {
  color: #ffffff;
  font-weight: 600;
}

.q-kana {
  font-size: 0.75rem;
  color: rgba(226, 232, 240, 0.45);
}

.btn-delete {
  background: transparent;
  border: none;
  color: rgba(255, 0, 110, 0.6);
  cursor: pointer;
  font-size: 0.82rem;
  padding: 4px 8px;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.btn-delete:hover {
  color: var(--error-color);
  background: rgba(255, 0, 110, 0.1);
}