@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&family=DM+Mono:wght@400;500&display=swap');

:root {
  --green: #1D9E75;
  --green-dark: #0F6E56;
  --green-deeper: #085041;
  --green-light: #E1F5EE;
  --green-mid: #9FE1CB;
  --amber: #BA7517;
  --amber-light: #FAEEDA;
  --coral: #D85A30;
  --bg: #F4F7F5;
  --surface: #FFFFFF;
  --text: #1a2e26;
  --text-2: #4a6b5e;
  --text-3: #7a9b8e;
  --border: rgba(15,110,86,0.15);
  --radius: 16px;
  --radius-sm: 10px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: 'Noto Sans JP', "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  line-height: 1.6;
}

#app {
  max-width: 520px;
  margin: 0 auto;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

h1 {
  font-size: 22px;
  margin-top: 0;
  margin-bottom: 8px;
  color: var(--text);
}

h2 {
  font-size: 15px;
  margin: 0 0 10px;
  color: var(--text-2);
}

.app-description {
  margin-top: 0;
  margin-bottom: 24px;
  font-size: 13px;
  color: var(--text-3);
}

/* ============================
   ヘッダー・タブバー
   ============================ */
.header {
  background: var(--green-dark);
  color: white;
  padding: 12px 20px 10px;
  padding-top: calc(12px + env(safe-area-inset-top, 0px));
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.header-title {
  font-size: 18px;
  font-weight: 700;
}

.header-sub {
  font-size: 11px;
  opacity: 0.65;
  font-family: 'DM Mono', monospace;
}

.sync-indicator {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.15);
  font-family: 'DM Mono', monospace;
}

.sync-indicator.ok {
  background: rgba(100, 255, 180, 0.25);
}

.tab-bar {
  display: flex;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.tab-btn {
  flex: 1;
  padding: 11px 8px;
  border: none;
  background: none;
  font-size: 13px;
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 500;
  color: var(--text-3);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.tab-btn.active {
  color: var(--green-dark);
  border-bottom-color: var(--green);
}

/* Firebase未設定画面表示中はヘッダー・タブバーを隠す（FOUC防止） */
#app.pre-auth .header,
#app.pre-auth .tab-bar {
  display: none;
}

/* 画面切替 */
.screen {
  display: none;
  flex: 1;
  overflow-y: auto;
  padding: 14px 12px;
}

.screen.active {
  display: block;
}

/* Firebase設定画面のみ中央寄せの全画面カード表示にする */
#screen-firebase-setup.active {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.setup-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  width: 100%;
  max-width: 420px;
}

/* 設定画面の各項目のグルーピング */
.setting-block {
  margin-bottom: 24px;
  padding: 16px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

#group-checkbox-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.checkbox-label,
.radio-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text);
  cursor: pointer;
}

.radio-label {
  display: inline-flex;
  margin-right: 24px;
}

select,
textarea {
  width: 100%;
  padding: 8px 10px;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: var(--bg);
  color: var(--text);
  font-family: inherit;
  resize: vertical;
}

/* ボタン共通スタイル */
.btn {
  display: inline-block;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  font-family: 'Noto Sans JP', sans-serif;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: background-color 0.15s ease, opacity 0.15s ease;
}

.btn:hover:not(:disabled) {
  background-color: var(--green-light);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background-color: var(--green);
  border-color: var(--green);
  color: #ffffff;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--green-dark);
}

.btn-play {
  font-size: 16px;
}

.play-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.play-controls select {
  width: auto;
}

/* 練習画面 */
.progress-indicator {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-2);
  font-family: 'DM Mono', monospace;
  margin-bottom: 12px;
}

.practice-actions {
  display: flex;
  gap: 12px;
  margin: 16px 0;
}

/* フィードバック領域 */
.feedback-area {
  margin-top: 20px;
  padding: 16px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 15px;
}

.feedback-title {
  margin: 0 0 10px;
  font-weight: 600;
  color: var(--text-2);
}

.diff-line {
  line-height: 2;
}

.diff-correct {
  color: #22863a;
  font-weight: 600;
}

.diff-incorrect {
  color: #d73a49;
  font-weight: 600;
  text-decoration: line-through;
  text-decoration-color: #d73a49;
}

.diff-missing {
  color: #b7791f;
  font-weight: 600;
  background-color: #fefcbf;
  border-radius: 3px;
  padding: 0 2px;
}

.diff-hint-correct {
  color: #2b6cb0;
  font-weight: 600;
}

.diff-hint-wrong {
  color: #c53030;
  font-weight: 600;
}

.diff-hint-misplaced {
  color: #b7791f;
  font-weight: 600;
}

.diff-hint-blank {
  display: inline-block;
  min-width: 32px;
  height: 1em;
  border-bottom: 2px solid #a0aec0;
  margin: 0 2px;
}

.revealed-answer-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-2);
}

/* 結果画面 */
.score-summary {
  font-size: 20px;
  font-weight: 700;
  color: var(--green-dark);
  font-family: 'DM Mono', monospace;
  margin-bottom: 24px;
}

/* 音声警告 */
.voice-warning {
  font-size: 13px;
  color: var(--amber);
  background-color: var(--amber-light);
  border: 1px solid var(--amber);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin-bottom: 16px;
}

.hidden {
  display: none;
}

/* ============================
   Firebase設定画面
   ============================ */
.setup-error {
  font-size: 13px;
  color: var(--coral);
  background-color: var(--bg);
  border: 1px solid var(--coral);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin: 12px 0;
}

.setup-link-row {
  margin-top: 16px;
  font-size: 13px;
}

.setup-link-row a {
  color: var(--green);
}

/* ============================
   管理画面（グループ・文一覧）
   ============================ */
.admin-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.admin-row,
.admin-sentence-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.admin-row-label {
  flex: 1 1 160px;
  font-size: 14px;
  color: var(--text);
}

.admin-sentence-group-select {
  flex: 0 0 auto;
  width: auto;
  min-width: 120px;
}

.admin-sentence-text-input {
  flex: 1 1 200px;
}

.admin-add-row {
  display: flex;
  gap: 8px;
}

.admin-add-row input[type="text"] {
  flex: 1;
}

input[type="text"] {
  padding: 8px 10px;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: var(--bg);
  color: var(--text);
  font-family: inherit;
}

.btn-icon {
  padding: 6px 10px;
  font-size: 13px;
}

.btn-danger {
  border-color: var(--coral);
  color: var(--coral);
}

.btn-danger:hover:not(:disabled) {
  background-color: var(--amber-light);
}

.admin-bulk-result {
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-2);
}

.admin-bulk-result ul {
  margin: 6px 0 0;
  padding-left: 20px;
}

#admin-bulk-submit-btn,
#admin-seed-btn {
  margin-top: 10px;
}

#admin-back-btn {
  margin-top: 8px;
}

/* ============================
   苦戦度ピッカー／バッジ（練習画面・設定画面・管理画面で共通利用）
   配色はvocab-app（C:\Users\hiros\vocab-app\src\index.html）の
   .btn-struggle / .struggle-badge をそのまま踏襲
   ============================ */
.struggle-picker {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
}

.struggle-picker-label {
  font-size: 13px;
  color: var(--text-2);
  white-space: nowrap;
}

.struggle-btns {
  display: flex;
  gap: 6px;
}

.btn-struggle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  background-color: var(--surface);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-3);
  flex-shrink: 0;
}

.btn-struggle.s0.active { background-color: #f4f6f8; border-color: #a0aec0; color: #4a5568; }
.btn-struggle.s1.active { background-color: #EAF3DE; border-color: #639922; color: #3B6D11; }
.btn-struggle.s2.active { background-color: #FAEEDA; border-color: #BA7517; color: #854F0B; }
.btn-struggle.s3.active { background-color: #FAECE7; border-color: #D85A30; color: #993C1D; }
.btn-struggle.s4.active { background-color: #F7D0D0; border-color: #B32020; color: #7A0000; }
.btn-struggle.s5.active { background-color: #EDD0F0; border-color: #8B2AA0; color: #5C0070; }
.btn-struggle.s6.active { background-color: #D0D0F0; border-color: #3030A0; color: #000070; }
.btn-struggle.s7.active { background-color: #D0D0D0; border-color: #404040; color: #1A1A1A; }

.struggle-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 20px;
  white-space: nowrap;
  font-weight: 700;
}

.struggle-badge.s0 { background-color: #f4f6f8; color: #4a5568; }
.struggle-badge.s1 { background-color: #EAF3DE; color: #3B6D11; }
.struggle-badge.s2 { background-color: #FAEEDA; color: #854F0B; }
.struggle-badge.s3 { background-color: #FAECE7; color: #993C1D; }
.struggle-badge.s4 { background-color: #F7D0D0; color: #7A0000; }
.struggle-badge.s5 { background-color: #EDD0F0; color: #5C0070; }
.struggle-badge.s6 { background-color: #D0D0F0; color: #000070; }
.struggle-badge.s7 { background-color: #D0D0D0; color: #1A1A1A; }

#struggle-checkbox-list {
  display: flex;
  gap: 8px;
}

/* ============================
   レスポンシブ（スマホ表示対応）
   ============================ */
@media (max-width: 600px) {
  h1 {
    font-size: 20px;
  }

  .practice-actions {
    flex-direction: column;
  }

  .practice-actions .btn {
    width: 100%;
  }

  .play-controls {
    flex-wrap: wrap;
  }

  .struggle-picker,
  #struggle-checkbox-list,
  .admin-row,
  .admin-sentence-row {
    flex-wrap: wrap;
  }

  .btn {
    min-height: 44px;
  }
}

@media (max-width: 400px) {
  .setting-block,
  .feedback-area {
    padding: 12px;
  }
}