/* BopoType (ㄅㄆ打字) - 極客暗黑風格樣式規範 */
:root {
  --bg-primary: #121316;
  --bg-secondary: #1a1b1f;
  --bg-card: #22242a;
  --text-main: #f1f3f5;
  --text-dim: #6c727f;
  --text-muted: #4b5162;
  --color-accent: #e2b714; /* Monkeytype 經典金黃 */
  --color-accent-green: #00e676; /* 翡翠綠 */
  --color-error: #ff5252; /* 霓虹紅 */
  --color-error-bg: rgba(255, 82, 82, 0.15);
  --border-subtle: #2d3139;
  --font-mono: "JetBrains Mono", "SF Mono", "Consolas", monospace;
  --font-sans: "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", sans-serif;
}

[data-theme="light"] {
  --bg-primary: #f8f9fa;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --text-main: #212529;
  --text-dim: #6c757d;
  --text-muted: #adb5bd;
  --color-accent: #d97706;
  --color-accent-green: #059669;
  --color-error: #dc2626;
  --color-error-bg: rgba(220, 38, 38, 0.1);
  --border-subtle: #e9ecef;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.2s ease, color 0.2s ease;
  overflow-x: hidden;
}

/* 核心容器 */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* 頂部導航 */
header {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--text-main);
  text-decoration: none;
}

.logo-badge {
  background: var(--color-accent);
  color: #121316;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-icon {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-dim);
  padding: 0.45rem 0.75rem;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  transition: all 0.15s ease;
}

.btn-icon:hover {
  color: var(--text-main);
  border-color: var(--text-dim);
  background: var(--bg-secondary);
}

/* 工具主區域 */
main {
  flex: 1;
  padding: 2.5rem 0 4rem;
}

/* 模式選擇控制欄 */
.controls-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  background: var(--bg-secondary);
  padding: 0.6rem 1.25rem;
  border-radius: 12px;
  margin-bottom: 2.5rem;
  border: 1px solid var(--border-subtle);
}

.control-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.control-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-family: var(--font-mono);
  margin-right: 0.2rem;
}

.control-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 0.35rem 0.7rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.control-btn:hover {
  color: var(--text-main);
}

.control-btn.active {
  color: var(--color-accent);
  background: rgba(226, 183, 20, 0.12);
  font-weight: 700;
}

.divider {
  width: 1px;
  height: 18px;
  background: var(--border-subtle);
}

/* 即時數據浮動欄 */
.live-stats {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  margin-bottom: 1.25rem;
  padding: 0 0.5rem;
}

.stat-timer {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-accent);
}

.stat-pills {
  display: flex;
  gap: 1.5rem;
  font-size: 0.95rem;
  color: var(--text-dim);
}

.stat-pills strong {
  color: var(--text-main);
  margin-left: 0.3rem;
}

/* 打字核心區域 */
.typing-box {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 2.5rem;
  min-height: 220px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  cursor: text;
  outline: none;
  transition: border-color 0.2s ease;
}

.typing-box:focus-within {
  border-color: rgba(226, 183, 20, 0.4);
}

/* 隱藏但接收焦點的底層輸入框 */
.hidden-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  left: -9999px;
}

/* 文本文字展示流 */
.words-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 0.8rem;
  font-size: 1.75rem;
  line-height: 2;
  user-select: none;
}

.char-token {
  position: relative;
  transition: color 0.1s ease;
  color: var(--text-muted);
}

.char-token.waiting {
  color: var(--text-muted);
}

.char-token.current {
  color: var(--text-main);
  border-bottom: 3px solid var(--color-accent);
  padding-bottom: 2px;
}

.char-token.correct {
  color: var(--color-accent-green);
}

.char-token.incorrect {
  color: var(--color-error);
  background: var(--color-error-bg);
  border-radius: 4px;
}

/* 注音標音小字提示 (Zhuyin Ruby) */
.zhuyin-ruby {
  position: absolute;
  top: -1.2rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  font-family: var(--font-sans);
  color: var(--text-dim);
  white-space: nowrap;
}

/* 敲擊指示小提示 */
.restart-hint {
  margin-top: 1.75rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

.restart-hint kbd {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  color: var(--text-dim);
}

/* 大千注音鍵盤可視化容器 */
.keyboard-section {
  margin-top: 2.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 1.5rem;
}

.keyboard-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  font-size: 0.9rem;
  color: var(--text-dim);
}

.keyboard-grid {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.kb-row {
  display: flex;
  justify-content: center;
  gap: 0.4rem;
}

.kb-key {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 0.4rem 0.6rem;
  min-width: 44px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-dim);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: all 0.1s ease;
}

.kb-key .bopomofo {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
}

.kb-key .qwerty {
  font-size: 0.65rem;
  color: var(--text-muted);
}

.kb-key.active-key {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.kb-key.active-key .bopomofo,
.kb-key.active-key .qwerty {
  color: #121316;
}

/* 結算卡片彈窗 (Result Modal) */
.result-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  display: none;
  justify-content: center;
  align-items: center;
  padding: 1.5rem;
  z-index: 1000;
}

.result-modal-backdrop.open {
  display: flex;
}

.result-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 2.5rem;
  max-width: 580px;
  width: 100%;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
  text-align: center;
  position: relative;
}

.result-badge {
  display: inline-block;
  background: rgba(226, 183, 20, 0.15);
  color: var(--color-accent);
  padding: 0.35rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.result-main-wpm {
  font-size: 4.5rem;
  font-weight: 900;
  font-family: var(--font-mono);
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.result-main-label {
  font-size: 0.9rem;
  color: var(--text-dim);
  text-transform: uppercase;
  font-family: var(--font-mono);
  letter-spacing: 1px;
  margin-bottom: 2rem;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
  background: var(--bg-card);
  padding: 1.25rem;
  border-radius: 12px;
}

.result-stat-val {
  font-size: 1.6rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--text-main);
}

.result-stat-lbl {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 0.2rem;
}

.result-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.btn-primary {
  background: var(--color-accent);
  color: #121316;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 10px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: opacity 0.15s ease;
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
  padding: 0.75rem 1.5rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-secondary:hover {
  border-color: var(--text-dim);
}

/* 1500 詞深度 SEO 科普文章區 */
.seo-article-section {
  margin-top: 4rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border-subtle);
}

.seo-article-section h1 {
  font-size: 1.85rem;
  margin-bottom: 1.25rem;
  color: var(--text-main);
}

.seo-article-section h2 {
  font-size: 1.4rem;
  margin: 2.25rem 0 1rem;
  color: var(--text-main);
  border-left: 4px solid var(--color-accent);
  padding-left: 0.75rem;
}

.seo-article-section h3 {
  font-size: 1.15rem;
  margin: 1.5rem 0 0.75rem;
  color: var(--text-main);
}

.seo-article-section p {
  color: var(--text-dim);
  margin-bottom: 1.25rem;
  line-height: 1.8;
  font-size: 1.02rem;
}

.seo-article-section ul, 
.seo-article-section ol {
  margin: 1rem 0 1.5rem 1.5rem;
  color: var(--text-dim);
  line-height: 1.8;
}

.seo-article-section li {
  margin-bottom: 0.5rem;
}

.seo-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.seo-table th, 
.seo-table td {
  border: 1px solid var(--border-subtle);
  padding: 0.85rem 1rem;
  text-align: left;
}

.seo-table th {
  background: var(--bg-card);
  color: var(--text-main);
}

.seo-table td {
  background: var(--bg-secondary);
  color: var(--text-dim);
}

/* FAQ 手風琴 */
.faq-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  margin-bottom: 0.85rem;
  padding: 1.15rem 1.35rem;
}

.faq-q {
  font-weight: 700;
  color: var(--text-main);
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.faq-a {
  color: var(--text-dim);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* 頁尾 */
footer {
  border-top: 1px solid var(--border-subtle);
  padding: 2.5rem 0;
  background: var(--bg-secondary);
  margin-top: auto;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-dim);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--color-accent);
}

/* 響應式優化 */
@media (max-width: 768px) {
  .words-container {
    font-size: 1.4rem;
  }
  .typing-box {
    padding: 1.5rem;
  }
  .controls-bar {
    gap: 0.6rem;
  }
  .result-main-wpm {
    font-size: 3.5rem;
  }
  .result-grid {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }
}