/* ==========================================================================
   光合作用清楚大字版 | Right Sidebar Centralized UI & High-Legibility Design
   ========================================================================== */

:root {
  --bg-deep: #050d09;
  --bg-header: rgba(10, 22, 16, 0.96);
  --bg-panel: #0a1b12;
  --bg-card: rgba(16, 36, 26, 0.75);
  --border-glass: rgba(52, 211, 153, 0.28);
  --border-bright: rgba(52, 211, 153, 0.6);

  --emerald-main: #10b981;
  --emerald-bright: #34d399;
  --sun-gold: #fbbf24;
  --water-cyan: #38bdf8;
  --co2-gray: #e2e8f0;
  --o2-pure: #67e8f9;

  --text-main: #ffffff;
  --text-muted: #cbd5e1;
  --text-dim: #94a3b8;

  --font-sans: 'Outfit', 'Noto Sans TC', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

html, body {
  width: 100%;
  height: 100vh;
  min-height: 100vh;
  background-color: var(--bg-deep);
  color: var(--text-main);
  font-family: var(--font-sans);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ==========================================================================
   頂部大字標題列 (Header)
   ========================================================================== */
.main-header {
  background: var(--bg-header);
  border-bottom: 2px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 28px;
  flex-shrink: 0;
  gap: 16px;
  z-index: 10;
}

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

.brand-icon {
  font-size: 2.2rem;
}

.brand-title h1 {
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #ffffff;
}

.brand-sub {
  font-size: 0.9rem;
  color: var(--emerald-bright);
  display: block;
  font-weight: 600;
}

/* 大字體化學方程式看板 */
.equation-display {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(0, 0, 0, 0.6);
  border: 1.5px solid rgba(255, 255, 255, 0.15);
  padding: 8px 24px;
  border-radius: 35px;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
}

.eq-item {
  color: #cbd5e1;
  transition: all 0.3s ease;
}

.eq-item.active-co2 { color: var(--co2-gray); text-shadow: 0 0 12px rgba(226, 232, 240, 0.9); }
.eq-item.active-h2o { color: var(--water-cyan); text-shadow: 0 0 12px rgba(56, 189, 248, 0.9); }
.eq-item.active-glucose { color: var(--sun-gold); text-shadow: 0 0 15px rgba(251, 191, 36, 1); }
.eq-item.active-o2 { color: var(--o2-pure); text-shadow: 0 0 12px rgba(103, 232, 249, 0.9); }
.eq-item.active-starch { color: #fef08a; text-shadow: 0 0 16px rgba(254, 240, 138, 1); font-weight: 800; }

.eq-op {
  color: #94a3b8;
  font-weight: 800;
}

.eq-arrow {
  color: var(--emerald-bright);
  font-size: 1rem;
  padding: 0 4px;
  transition: all 0.3s ease;
}

.eq-arrow.active-poly {
  color: #fbbf24;
  text-shadow: 0 0 12px rgba(251, 191, 36, 0.9);
}

/* ==========================================================================
   主工作區：左側大畫布 + 右側集中控制面板
   ========================================================================== */
.app-layout {
  flex: 1;
  display: flex;
  min-height: 0;
  width: 100%;
  overflow: hidden;
}

/* 左側畫布區 */
.canvas-section {
  flex: 1;
  min-width: 0;
  background: #020704;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

#simCanvas {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* ==========================================================================
   右側集中控制面板 (Sidebar Panel)
   ========================================================================== */
.sidebar-panel {
  width: 360px;
  flex-shrink: 0;
  background: var(--bg-panel);
  border-left: 2px solid var(--border-glass);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  overflow-y: auto;
  z-index: 5;
}

.panel-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border-glass);
  border-radius: 18px;
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.card-heading {
  font-size: 1.15rem;
  font-weight: 800;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 8px;
}

.panel-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 8px;
  min-height: 38px;
  box-sizing: border-box;
}

.panel-header-row .card-heading {
  border-bottom: none;
  padding-bottom: 0;
}

.loop-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  background: rgba(148, 163, 184, 0.15);
  color: var(--text-dim);
  border: 1px solid rgba(148, 163, 184, 0.25);
  transition: all 0.3s ease;
  min-width: 104px;
  height: 28px;
  box-sizing: border-box;
  white-space: nowrap;
  flex-shrink: 0;
}

#loopBadgeText {
  display: inline-block;
  min-width: 66px;
  text-align: center;
  white-space: nowrap;
}

.loop-badge.active {
  background: rgba(16, 185, 129, 0.18);
  color: #34d399;
  border-color: rgba(52, 211, 153, 0.5);
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.28);
}

.loop-badge.paused {
  background: rgba(245, 158, 11, 0.18);
  color: #fbbf24;
  border-color: rgba(251, 191, 36, 0.5);
}

.loop-badge.transpiration-active {
  background: rgba(6, 182, 212, 0.2);
  color: #22d3ee;
  border-color: rgba(34, 211, 238, 0.6);
  box-shadow: 0 0 12px rgba(6, 182, 212, 0.35);
}

.loop-badge.step-mode {
  background: rgba(139, 92, 246, 0.2);
  color: #c084fc;
  border-color: rgba(192, 132, 252, 0.55);
  box-shadow: 0 0 12px rgba(139, 92, 246, 0.35);
}

.loop-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #94a3b8;
  display: inline-block;
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.loop-badge.active .loop-dot {
  background: #34d399;
  box-shadow: 0 0 8px #34d399;
  animation: loop-pulse-dot 1.5s infinite;
}

.loop-badge.paused .loop-dot {
  background: #fbbf24;
}

.loop-badge.transpiration-active .loop-dot {
  background: #22d3ee;
  box-shadow: 0 0 8px #22d3ee;
  animation: loop-pulse-dot 1.5s infinite;
}

.loop-badge.step-mode .loop-dot {
  background: #c084fc;
  box-shadow: 0 0 8px #c084fc;
  animation: loop-pulse-dot 1.5s infinite;
}

@keyframes loop-pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.55; }
}

.loop-status-detail {
  font-size: 0.84rem;
  color: #e2e8f0;
  font-weight: 600;
  background: rgba(0, 0, 0, 0.38);
  padding: 6px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  gap: 8px;
  line-height: 1.35;
  min-height: 80px;
  height: 80px;
  box-sizing: border-box;
  overflow: hidden;
}

#loopStatusText {
  display: block;
  width: 100%;
  line-height: 1.35;
  word-break: break-word;
}

.loop-status-detail .loop-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

.loop-status-detail strong {
  color: #34d399;
  font-size: 1.05rem;
}

.panel-hint {
  font-size: 0.88rem;
  color: var(--text-dim);
  font-weight: 600;
}

/* 垂直按鈕群組 */
.btn-vertical-group, .fate-vertical-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* 核心演示按鈕 */
.primary-btn-lg {
  background: linear-gradient(135deg, #059669, #10b981);
  color: #ffffff;
  border: none;
  padding: 14px 20px;
  border-radius: 14px;
  font-family: inherit;
  font-size: 1.15rem;
  font-weight: 800;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: all 0.2s ease;
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.45);
}

.primary-btn-lg:hover {
  background: linear-gradient(135deg, #10b981, #34d399);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(16, 185, 129, 0.65);
}

.primary-btn-lg.playing {
  background: linear-gradient(135deg, #0284c7, #0ea5e9);
  box-shadow: 0 4px 16px rgba(14, 165, 233, 0.45);
}

.primary-btn-lg.playing:hover {
  background: linear-gradient(135deg, #0ea5e9, #38bdf8);
  box-shadow: 0 6px 22px rgba(14, 165, 233, 0.65);
}

/* 單步演示按鈕 (Step-by-step Button) */
.step-btn-lg {
  background: linear-gradient(135deg, #6d28d9, #8b5cf6);
  color: #ffffff;
  border: 1.5px solid rgba(196, 181, 253, 0.45);
  padding: 12px 18px;
  border-radius: 14px;
  font-family: inherit;
  font-size: 1.08rem;
  font-weight: 800;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: all 0.22s ease;
  box-shadow: 0 4px 16px rgba(139, 92, 246, 0.38);
}

.step-btn-lg:hover {
  background: linear-gradient(135deg, #7c3aed, #a78bfa);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(139, 92, 246, 0.58);
}

.step-btn-lg:active {
  transform: translateY(0);
}

.secondary-btn-lg {
  background: rgba(255, 255, 255, 0.06);
  border: 1.5px solid rgba(255, 255, 255, 0.18);
  color: var(--text-muted);
  padding: 11px 18px;
  border-radius: 12px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.secondary-btn-lg:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #ffffff;
}

/* 蒸散作用專題按鈕 */
.transpiration-btn-lg {
  background: linear-gradient(135deg, #0369a1, #0284c7);
  color: #ffffff;
  border: 1.5px solid rgba(56, 189, 248, 0.4);
  padding: 12px 18px;
  border-radius: 14px;
  font-family: inherit;
  font-size: 1.08rem;
  font-weight: 800;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.transpiration-btn-lg:hover {
  background: linear-gradient(135deg, #0284c7, #38bdf8);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.55);
}

.transpiration-btn-lg.active {
  background: linear-gradient(135deg, #0284c7, #38bdf8);
  border-color: #7dd3fc;
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.7);
  animation: trans-pulse 2s infinite alternate;
}

@keyframes trans-pulse {
  0% { box-shadow: 0 0 14px rgba(56, 189, 248, 0.4); }
  100% { box-shadow: 0 0 24px rgba(56, 189, 248, 0.85); }
}

/* 蒸散作用專題資訊面板 */
.transpiration-info-box {
  margin-top: 10px;
  background: rgba(3, 43, 67, 0.45);
  border: 1.5px solid rgba(56, 189, 248, 0.35);
  border-radius: 12px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.trans-info-title {
  color: #38bdf8;
  font-weight: 800;
  font-size: 0.9rem;
}

.trans-info-desc {
  color: #e2e8f0;
  font-size: 0.82rem;
  line-height: 1.45;
}

.trans-stat-row {
  display: flex;
  gap: 8px;
  margin-top: 2px;
}

.stat-badge {
  flex: 1;
  text-align: center;
  padding: 5px 6px;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 700;
}

.stat-transpire {
  background: rgba(56, 189, 248, 0.2);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.35);
}

.stat-photo {
  background: rgba(74, 222, 128, 0.2);
  color: #4ade80;
  border: 1px solid rgba(74, 222, 128, 0.35);
}

/* 集中控制組：運行模式與光照環境 Toggle */
.controls-cluster {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: rgba(0, 0, 0, 0.32);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  padding: 12px;
  margin-top: 4px;
}

.control-toggle-block {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.control-block-title {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.segmented-pair {
  display: flex;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 11px;
  padding: 3px;
  gap: 4px;
}

.seg-btn {
  flex: 1;
  padding: 8px 6px;
  border: none;
  background: transparent;
  color: var(--text-dim);
  font-family: inherit;
  font-size: 0.86rem;
  font-weight: 700;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  text-align: center;
  white-space: nowrap;
}

.seg-btn:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}

/* 真實生理模式 Active (蔚藍科技流光) */
#modeParallelBtn.active {
  background: linear-gradient(135deg, #0284c7, #38bdf8);
  color: #ffffff;
  box-shadow: 0 0 14px rgba(56, 189, 248, 0.45);
}

/* 自動分步模式 Active (翡翠綠流光) */
#modeAutoBtn.active {
  background: linear-gradient(135deg, #059669, #10b981);
  color: #ffffff;
  box-shadow: 0 0 14px rgba(16, 185, 129, 0.45);
}

/* 手動模式 Active (皇家紫流光) */
#modeManualBtn.active {
  background: linear-gradient(135deg, #7c3aed, #a855f7);
  color: #ffffff;
  box-shadow: 0 0 14px rgba(168, 85, 247, 0.45);
}

/* 日間光照 Active (暖金陽光) */
.seg-btn.light-day.active {
  background: linear-gradient(135deg, #d97706, #fbbf24);
  color: #1e1b4b;
  font-weight: 800;
  box-shadow: 0 0 16px rgba(251, 191, 36, 0.5);
}

/* 夜間黑暗 Active (深邃靛藍月光) */
.seg-btn.light-night.active {
  background: linear-gradient(135deg, #312e81, #6366f1);
  color: #ffffff;
  font-weight: 800;
  box-shadow: 0 0 16px rgba(99, 102, 241, 0.5);
}

/* 顯示字幕 Active (晴空天藍亮光) */
.seg-btn.subtitle-on.active {
  background: linear-gradient(135deg, #0284c7, #38bdf8);
  color: #041d33;
  font-weight: 800;
  box-shadow: 0 0 14px rgba(56, 189, 248, 0.45);
}

/* 隱藏字幕 Active (俐落灰藍深調) */
.seg-btn.subtitle-off.active {
  background: linear-gradient(135deg, #475569, #64748b);
  color: #ffffff;
  font-weight: 800;
  box-shadow: 0 0 12px rgba(100, 116, 139, 0.35);
}

/* 開啟放大圖 Active (翡翠綠光) */
.seg-btn.inset-on.active {
  background: linear-gradient(135deg, #10b981, #34d399);
  color: #064e3b;
  font-weight: 800;
  box-shadow: 0 0 14px rgba(52, 211, 153, 0.45);
}

/* 關閉放大圖 Active (俐落灰藍深調) */
.seg-btn.inset-off.active {
  background: linear-gradient(135deg, #475569, #64748b);
  color: #ffffff;
  font-weight: 800;
  box-shadow: 0 0 12px rgba(100, 116, 139, 0.35);
}



/* 保衛細胞狀態即時卡片 */
.guard-cell-status-box {
  background: rgba(0, 0, 0, 0.42);
  border: 1px solid rgba(52, 211, 153, 0.25);
  border-radius: 12px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
}

.guard-status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.guard-status-label {
  color: var(--text-dim);
  font-weight: 600;
}

.guard-status-val {
  color: #34d399;
  font-weight: 700;
}

/* 葡萄糖去向大選項按鈕 */
.fate-btn-lg {
  background: rgba(0, 0, 0, 0.45);
  border: 2px solid rgba(255, 255, 255, 0.12);
  color: var(--text-muted);
  padding: 12px 16px;
  border-radius: 14px;
  font-family: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all 0.2s ease;
  text-align: left;
}

.fate-btn-lg:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

.fate-btn-lg .fate-icon {
  font-size: 1.9rem;
}

.fate-info {
  display: flex;
  flex-direction: column;
}

.fate-info strong {
  font-size: 1.08rem;
  color: #ffffff;
}

.fate-info small {
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* 激活狀態 */
#fateRootBtn.active {
  background: linear-gradient(135deg, rgba(126, 34, 206, 0.45), rgba(168, 85, 247, 0.45));
  border-color: #c084fc;
  box-shadow: 0 0 16px rgba(168, 85, 247, 0.4);
}
#fateRootBtn.active .fate-info strong { color: #f3e8ff; }

#fateFlowerBtn.active {
  background: linear-gradient(135deg, rgba(190, 24, 93, 0.45), rgba(236, 72, 153, 0.45));
  border-color: #f472b6;
  box-shadow: 0 0 16px rgba(236, 72, 153, 0.4);
}
#fateFlowerBtn.active .fate-info strong { color: #fce7f3; }

#fateFruitBtn.active {
  background: linear-gradient(135deg, rgba(185, 28, 28, 0.45), rgba(239, 68, 68, 0.45));
  border-color: #f87171;
  box-shadow: 0 0 16px rgba(239, 68, 68, 0.4);
}
#fateFruitBtn.active .fate-info strong { color: #fee2e2; }

#fateShootBtn.active {
  background: linear-gradient(135deg, rgba(77, 124, 15, 0.45), rgba(132, 204, 22, 0.45));
  border-color: #a3e635;
  box-shadow: 0 0 16px rgba(163, 230, 53, 0.4);
}
#fateShootBtn.active .fate-info strong { color: #ecfccb; }

/* 根部養分再動員轉運按鈕 */
.remobilize-card {
  border-color: rgba(192, 132, 252, 0.35);
  background: linear-gradient(160deg, rgba(20, 30, 24, 0.8), rgba(28, 20, 36, 0.75));
}

.remobilize-btn {
  background: rgba(0, 0, 0, 0.5);
  border: 1.8px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
  padding: 12px 16px;
  border-radius: 14px;
  font-family: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all 0.22s ease;
  text-align: left;
}

.remobilize-btn .btn-icon {
  font-size: 1.8rem;
}

.flower-remobilize:hover {
  background: linear-gradient(135deg, rgba(190, 24, 93, 0.35), rgba(236, 72, 153, 0.35));
  border-color: #f472b6;
  box-shadow: 0 0 18px rgba(236, 72, 153, 0.45);
  transform: translateY(-2px);
}

.fruit-remobilize:hover {
  background: linear-gradient(135deg, rgba(185, 28, 28, 0.35), rgba(239, 68, 68, 0.35));
  border-color: #f87171;
  box-shadow: 0 0 18px rgba(239, 68, 68, 0.45);
  transform: translateY(-2px);
}

.shoot-remobilize:hover {
  background: linear-gradient(135deg, rgba(63, 98, 18, 0.35), rgba(132, 204, 22, 0.35));
  border-color: #84cc16;
  box-shadow: 0 0 18px rgba(132, 204, 22, 0.45);
  transform: translateY(-2px);
}

.remobilize-btn.disabled {
  opacity: 0.45;
  cursor: not-allowed;
  filter: grayscale(0.6);
}
.remobilize-btn.disabled:hover {
  transform: none;
  box-shadow: none;
  background: rgba(0, 0, 0, 0.5);
  border-color: rgba(255, 255, 255, 0.15);
}

/* ==========================================================================
   響應式規則 (小螢幕自適應)
   ========================================================================== */
@media (max-width: 1100px) {
  .equation-display {
    display: none;
  }
}

@media (max-width: 860px) {
  html, body {
    height: auto;
    overflow-y: auto;
  }
  .app-layout {
    flex-direction: column;
    overflow: visible;
  }
  .sidebar-panel {
    width: 100%;
    border-left: none;
    border-top: 2px solid var(--border-glass);
  }
}