/* ==========================================================================
   《無日浪漫》沉浸式打字工作站與多軌同步音樂系統 - 樣式表
   風格：夜幕都市、王家衛 × 新海誠電影色調、毛玻璃態 (Glassmorphism)、呼吸光標
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;600;700&family=Noto+Serif+TC:wght@400;600;700;900&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --font-serif: 'Noto Serif TC', serif;
  --font-title: 'Cinzel', 'Noto Serif TC', serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* 色彩系統：深夜墨藍、窗台琥珀光、秘銀微光 */
  --bg-dark: #070a10;
  --color-amber: #f7c873;
  --color-amber-glow: rgba(247, 200, 115, 0.4);
  --color-cyan: #64d2ff;
  --color-cyan-glow: rgba(100, 210, 255, 0.35);
  --panel-bg: rgba(10, 14, 23, 0.72);
  --panel-border: rgba(247, 200, 115, 0.22);
  --panel-border-active: rgba(247, 200, 115, 0.65);
  --text-main: #f5f6f8;
  --text-muted: #9ba4b5;
  --text-whisper: #5c6475;
}

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

html, body {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background-color: var(--bg-dark);
  font-family: var(--font-serif);
  color: var(--text-main);
  user-select: none;
  -webkit-user-select: none;
}

/* 主容器 */
#stage-container {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  overflow: hidden;
}

/* ==========================================================================
   全螢幕背景影片與電影感濾鏡
   ========================================================================== */
.video-background-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  overflow: hidden;
}

#bg-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.85) contrast(1.05) saturate(1.1);
  transform: scale(1.02); /* 微幅放大小晃動適配 */
}

/* 電影感暗角遮罩與霧氣粒子 */
.video-overlay-tint {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background: radial-gradient(circle at 50% 40%, rgba(7, 10, 16, 0.25) 0%, rgba(7, 10, 16, 0.8) 100%);
  z-index: 2;
}

/* ==========================================================================
   頂部 HUD：作品標題與主唱甦醒指示儀
   ========================================================================== */
.top-header {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: 1200px;
  padding: 24px 32px 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid var(--panel-border-active);
  box-shadow: 0 0 16px rgba(247, 200, 115, 0.35);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.brand-logo:hover {
  transform: rotate(6deg) scale(1.08);
  box-shadow: 0 0 24px rgba(247, 200, 115, 0.6);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-title);
  font-size: 1.45rem;
  letter-spacing: 0.2em;
  font-weight: 700;
  background: linear-gradient(135deg, #ffffff 0%, var(--color-amber) 80%, #99752b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 20px var(--color-amber-glow);
}

.brand-subtitle {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-top: 3px;
}

/* 主唱動態聲量儀 (Vocals Resonance Meter) */
.vocals-meter-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  padding: 10px 20px;
  border-radius: 999px;
  backdrop-filter: blur(16px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  transition: all 0.3s ease;
}

.vocals-meter-card.awake {
  border-color: var(--panel-border-active);
  box-shadow: 0 0 25px rgba(247, 200, 115, 0.3);
}

.meter-info {
  display: flex;
  flex-direction: column;
  text-align: right;
}

.meter-label {
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.meter-percent {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-amber);
}

/* 跳動波形條 (Waveform Bars - GPU 硬體加速) */
.waveform-bars {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 24px;
}

.wave-bar {
  width: 3.5px;
  height: 20px;
  background-color: var(--color-amber);
  border-radius: 2px;
  transform-origin: bottom;
  transform: scaleY(0.2);
  will-change: transform, opacity;
  transition: opacity 0.2s ease;
  opacity: 0.3;
}

.vocals-meter-card.awake .wave-bar {
  opacity: 1;
  box-shadow: 0 0 6px var(--color-amber);
}

/* ==========================================================================
   中央與下方：詩人打字機視窗 (Flow Typer Deck)
   ========================================================================== */
.typer-main-stage {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: 920px;
  margin: 0 auto;
  padding: 0 24px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.typer-card {
  width: 100%;
  height: 380px;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 20px;
  padding: 28px 32px;
  backdrop-filter: blur(20px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.65);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.typer-card:focus-within,
.typer-card.typing-active {
  border-color: var(--panel-border-active);
  box-shadow: 0 16px 52px rgba(247, 200, 115, 0.15);
}

/* 打字機卡片頂部小標籤 */
.typer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 16px;
}

.typer-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-amber);
  box-shadow: 0 0 8px var(--color-amber);
  animation: pulse-dot 2s infinite ease-in-out;
}

.typer-stats {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* 文字輸出捲動視窗 */
.text-stream-viewport {
  flex: 1;
  overflow-y: auto;
  padding-right: 12px;
  font-size: 1.15rem;
  line-height: 2.1;
  letter-spacing: 0.06em;
  color: var(--text-main);
  text-align: justify;
  scrollbar-width: thin;
  scrollbar-color: rgba(247, 200, 115, 0.25) transparent;
}

.text-stream-viewport::-webkit-scrollbar {
  width: 6px;
}

.text-stream-viewport::-webkit-scrollbar-thumb {
  background: rgba(247, 200, 115, 0.25);
  border-radius: 999px;
}

/* 打出的字元效果 */
.char-revealed {
  display: inline;
  animation: char-fade-in 0.3s ease forwards;
}

@keyframes char-fade-in {
  0% { opacity: 0; color: var(--color-amber); text-shadow: 0 0 12px var(--color-amber); }
  100% { opacity: 1; color: var(--text-main); text-shadow: none; }
}

/* 呼吸閃爍光標 */
.typing-cursor {
  display: inline-block;
  width: 2.5px;
  height: 1.2em;
  background-color: var(--color-amber);
  vertical-align: text-bottom;
  margin-left: 3px;
  box-shadow: 0 0 8px var(--color-amber);
  animation: blink-cursor 1s infinite;
}

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

/* 初次打字提示引導 (浮動於打字框正中) */
.typer-prompt-guide {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  pointer-events: none;
  transition: opacity 0.4s ease;
  width: 80%;
}

.typer-prompt-guide.hidden {
  opacity: 0;
  visibility: hidden;
}

.guide-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
  filter: drop-shadow(0 0 12px var(--color-amber-glow));
}

.guide-text {
  font-size: 1.05rem;
  color: var(--color-amber);
  letter-spacing: 0.15em;
  font-weight: 600;
  margin-bottom: 6px;
}

.guide-subtext {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 隱形接收打字的鍵盤焦點 input */
#hidden-type-catcher {
  position: absolute;
  opacity: 0;
  pointer-events: auto;
  width: 1px;
  height: 1px;
  top: 0;
  left: 0;
}

/* ==========================================================================
   底部控制工具列 (Bottom Dock)
   ========================================================================== */
.bottom-dock {
  position: relative;
  z-index: 10;
  width: 100%;
  max-width: 1200px;
  padding: 12px 32px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* 音樂進度條 */
.music-progress-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  max-width: 420px;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  padding: 8px 16px;
  backdrop-filter: blur(12px);
}

.progress-time {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.progress-bar-container {
  flex: 1;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-cyan) 0%, var(--color-amber) 100%);
  border-radius: 999px;
  transition: width 0.2s linear;
}

/* 按鈕組 */
.action-buttons {
  display: flex;
  align-items: center;
  gap: 10px;
}

.dock-btn {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  color: var(--text-main);
  padding: 8px 16px;
  border-radius: 999px;
  font-family: var(--font-serif);
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  backdrop-filter: blur(12px);
  transition: all 0.25s ease;
  outline: none;
}

.dock-btn:hover {
  background: rgba(247, 200, 115, 0.15);
  border-color: var(--color-amber);
  color: var(--color-amber);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(247, 200, 115, 0.2);
}

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

/* ==========================================================================
   初次進入引導遮罩 (Welcome Splash)
   ========================================================================== */
#welcome-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(5, 7, 12, 0.85);
  backdrop-filter: blur(18px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 100;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}

#welcome-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.welcome-modal {
  max-width: 540px;
  text-align: center;
  padding: 44px 36px;
  background: linear-gradient(180deg, rgba(17, 23, 36, 0.95) 0%, rgba(9, 12, 19, 0.95) 100%);
  border: 1px solid var(--panel-border-active);
  border-radius: 24px;
  box-shadow: 0 0 60px rgba(247, 200, 115, 0.25);
}

.welcome-icon {
  font-size: 3.2rem;
  margin-bottom: 16px;
  filter: drop-shadow(0 0 16px var(--color-amber-glow));
}

.welcome-title {
  font-family: var(--font-title);
  font-size: 1.85rem;
  color: var(--color-amber);
  letter-spacing: 0.15em;
  margin-bottom: 12px;
}

.welcome-desc {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.welcome-desc strong {
  color: #fff;
  font-weight: 600;
}

.start-btn {
  background: linear-gradient(135deg, var(--color-amber) 0%, #b88a35 100%);
  color: #080b11;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 1.05rem;
  padding: 14px 44px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  letter-spacing: 0.15em;
  box-shadow: 0 0 25px var(--color-amber-glow);
  transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

.start-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 0 35px rgba(247, 200, 115, 0.7);
}

/* 響應式微調 */
@media (max-width: 768px) {
  .top-header {
    padding: 16px 20px 8px;
  }
  .brand-title {
    font-size: 1.15rem;
  }
  .typer-card {
    height: 300px;
    padding: 20px;
  }
  .bottom-dock {
    flex-direction: column;
    gap: 12px;
    padding: 8px 20px 16px;
  }
  .music-progress-wrapper {
    max-width: 100%;
    width: 100%;
  }
}

/* ==========================================================================
   打字視窗收起至底部動畫 (讓觀眾專注畫面與音樂)
   ========================================================================== */
.typer-main-stage {
  transition: transform 0.85s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.6s ease;
  will-change: transform, opacity;
}

.typer-main-stage.collapsed {
  transform: translateY(calc(100% + 70px));
  opacity: 0;
  pointer-events: none;
}

/* ==========================================================================
   浮動提示通知 (Toast Notification)
   ========================================================================== */
.toast-notification {
  position: fixed;
  top: 76px;
  left: 50%;
  transform: translateX(-50%) translateY(0);
  background: rgba(10, 14, 23, 0.9);
  border: 1px solid var(--panel-border-active);
  color: var(--color-amber);
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  backdrop-filter: blur(20px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.7), 0 0 24px rgba(247, 200, 115, 0.25);
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
  font-family: var(--font-serif);
}

.toast-notification.hidden {
  opacity: 0;
  transform: translateX(-50%) translateY(-28px);
}

/* ==========================================================================
   PDF 輸出專屬排版樣式 (白櫻蒼成 · 散文手稿 · 嚴格 A4 雙頁無損排版)
   ========================================================================== */
.pdf-document {
  background: #ffffff;
  color: #1a1e24;
  font-family: 'Noto Serif TC', 'Songti TC', 'PingFang TC', 'STSong', serif;
  box-sizing: border-box;
  width: 794px; /* A4 96 DPI 標準寬度 */
  margin: 0;
  padding: 0;
}

.pdf-page {
  width: 794px;
  height: 1123px; /* A4 96 DPI 標準高度 */
  min-height: 1123px;
  max-height: 1123px;
  padding: 48px 56px 40px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: #ffffff;
  overflow: hidden;
  position: relative;
  page-break-inside: avoid;
  break-inside: avoid;
}

.pdf-header {
  text-align: center;
  margin-bottom: 20px;
}

.pdf-category {
  font-size: 12px;
  letter-spacing: 0.25em;
  color: #8c734b;
  margin-bottom: 6px;
  text-transform: uppercase;
}

.pdf-title {
  font-size: 30px;
  font-weight: 900;
  letter-spacing: 0.22em;
  color: #11141a;
  margin-bottom: 10px;
}

.pdf-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  font-size: 14px;
  color: #4a5568;
  margin-bottom: 12px;
}

.pdf-author strong {
  color: #1a1e24;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.pdf-seal {
  display: inline-block;
  border: 1.2px solid #b33939;
  color: #b33939;
  padding: 1px 7px;
  font-size: 11.5px;
  font-weight: 700;
  border-radius: 3px;
  letter-spacing: 0.1em;
}

.pdf-divider {
  width: 100%;
  height: 1.5px;
  background: linear-gradient(90deg, transparent, #8c734b, transparent);
  margin: 0 auto;
}

.pdf-sub-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #718096;
  letter-spacing: 0.15em;
  padding-bottom: 8px;
}

.pdf-sub-title {
  font-weight: 700;
  color: #2d3748;
}

.pdf-sub-author {
  color: #8c734b;
}

.pdf-sub-divider {
  width: 100%;
  height: 1px;
  background: #e2e8f0;
  margin-bottom: 18px;
}

.pdf-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.pdf-body p {
  font-size: 13.5px;
  color: #24292e;
  text-align: justify;
  text-indent: 2em;
  margin-bottom: 12px;
  line-height: 1.85;
  letter-spacing: 0.035em;
}

.pdf-signature-section {
  margin-top: 14px;
  margin-bottom: 10px;
  padding: 12px 18px;
  background: #f8fafc;
  border-left: 3px solid #8c734b;
  border-radius: 0 6px 6px 0;
}

.pdf-signature-quote {
  font-size: 13px;
  font-style: italic;
  color: #4a5568;
  margin-bottom: 4px;
}

.pdf-signature-author {
  text-align: right;
  font-size: 12px;
  font-weight: 700;
  color: #2d3748;
  letter-spacing: 0.1em;
}

.pdf-page-footer {
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px solid #e2e8f0;
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: #a0aec0;
  letter-spacing: 0.08em;
}

.html2pdf__page-break {
  page-break-after: always;
  break-after: page;
}