/* ==========================================================================
   設計系統與設計標記 (Design Tokens) - 馬卡龍清新版
   ========================================================================== */
:root {
  /* 圓潤親和字型 - Zen Maru Gothic */
  --font-family: 'Zen Maru Gothic', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-code: 'JetBrains Mono', 'Fira Code', monospace;

  /* 馬卡龍粉嫩清新配色系統 (清新透亮，奶油香草與粉薄荷的相遇) */
  --bg-gradient: linear-gradient(135deg, #fdf6ee 0%, #eefbf4 100%);
  --card-bg: rgba(255, 255, 255, 0.7);
  --card-border: rgba(255, 255, 255, 0.6);
  --shadow-premium: 0 16px 40px rgba(165, 185, 175, 0.12); /* 輕盈溫和的粉彩陰影 */
  
  /* 主要色彩 - 抹茶薄荷綠 */
  --primary-color: #55c28b;        /* 抹茶薄荷綠 */
  --primary-hover: #44b079;
  --primary-active: #329e67;
  --primary-light: rgba(85, 194, 139, 0.08); 
  --primary-glow: rgba(85, 194, 139, 0.2);
  
  /* 文字色彩 - 高對比深焙茶色，符合 WCAG AA 易讀性 */
  --text-primary: #2d3e35;         /* 深焙茶色，取代刺眼純黑 */
  --text-secondary: #6b8275;       /* 灰綠茶色，用於次要資訊 */
  --text-dark: #2d3e35;            /* 主按鈕字體色 */
  
  /* 語意色彩 - 馬卡龍嫩色版 */
  --color-success: #55c28b;        /* 抹茶綠 */
  --color-error: #ff9aa2;          /* 草莓粉 */
  --color-warning: #ffd3b6;        /* 杏桃橙 */
  
  /* 圓角規範 - 更加圓潤可愛 */
  --border-radius-card: 20px;      /* 卡片圓角 */
  --border-radius-btn: 14px;       /* 按鈕與輸入框圓角 */
  --border-radius-pill: 30px;      /* 膠囊圓角 */
  
  /* 互動元素平滑過渡動畫 (0.2s ease) */
  --transition-fast: all 0.2s ease;
}

/* ==========================================================================
   基礎樣式與重設 (Reset & Base Styles) - 手機優先
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background: var(--bg-gradient);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px;
  overflow-x: hidden;
  line-height: 1.6;
  letter-spacing: 0.03em;
}

.container {
  width: 100%;
  max-width: 1150px;
  margin: 0 auto;
}

code, pre {
  font-family: var(--font-code);
}

/* ==========================================================================
   標頭區樣式 (Header Section)
   ========================================================================== */
.app-header {
  text-align: center;
  margin-bottom: 24px;
}

.app-header h1 {
  font-size: 1.9rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--primary-color);
  background: linear-gradient(to right, #3aa876, #7be0ad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.app-header h1 i {
  -webkit-text-fill-color: initial;
  color: var(--primary-color);
}

.subtitle {
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
}

/* ==========================================================================
   手機優先佈局 (Mobile First Layout)
   ========================================================================== */
/* 預設為手機直式與小螢幕佈局 */
.main-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

/* 玻璃擬態亮色卡片容器 */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius-card);
  box-shadow: var(--shadow-premium);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: var(--transition-fast);
}

.section-title {
  font-size: 1.1rem;
  font-weight: 700;
  border-left: 5px solid var(--primary-color);
  padding-left: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
}

/* 第一步：輸入框樣式 (亮色馬卡龍版) */
.name-input {
  width: 100%;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(85, 194, 139, 0.25);
  border-radius: var(--border-radius-btn);
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition-fast);
}

.name-input:focus {
  outline: none;
  background: #ffffff;
  border-color: var(--primary-color);
  box-shadow: 0 0 12px var(--primary-glow);
}

.name-input::placeholder {
  color: #a4bab0;
}

/* ==========================================================================
   第二步：飲料選擇區 (馬卡龍特殊配色：每款飲料有獨特糖果色)
   ========================================================================== */
.drink-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.drink-btn {
  background: rgba(255, 255, 255, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--border-radius-btn);
  padding: 14px 8px;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: var(--transition-fast);
}

.drink-btn:hover {
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(85, 194, 139, 0.3);
  transform: translateY(-3px);
}

.drink-icon {
  font-size: 1.6rem;
  transition: var(--transition-fast);
  color: var(--text-secondary);
}

.drink-name {
  font-size: 0.85rem;
  font-weight: 700;
}

.drink-price {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* 1. 紅茶：草莓粉嫩馬卡龍色 */
#btn-black-tea.active {
  background: #ffe5ec;
  border-color: #ffb3c6;
  color: #a82443;
  box-shadow: 0 6px 15px rgba(255, 179, 198, 0.35);
}
#btn-black-tea.active .drink-icon {
  color: #ff4d6d;
  transform: scale(1.15);
}
#btn-black-tea.active .drink-price {
  color: #ff4d6d;
  font-weight: 700;
}

/* 2. 綠茶：薄荷香草馬卡龍綠 */
#btn-green-tea.active {
  background: #e8f5e9;
  border-color: #a5d6a7;
  color: #1b5e20;
  box-shadow: 0 6px 15px rgba(165, 214, 167, 0.35);
}
#btn-green-tea.active .drink-icon {
  color: #388e3c;
  transform: scale(1.15);
}
#btn-green-tea.active .drink-price {
  color: #388e3c;
  font-weight: 700;
}

/* 3. 奶茶：香草太妃奶黃馬卡龍 */
#btn-milk-tea.active {
  background: #fef8e0;
  border-color: #ffe082;
  color: #5d4037;
  box-shadow: 0 6px 15px rgba(255, 224, 130, 0.35);
}
#btn-milk-tea.active .drink-icon {
  color: #f5b041;
  transform: scale(1.15);
}
#btn-milk-tea.active .drink-price {
  color: #e67e22;
  font-weight: 700;
}

/* ==========================================================================
   第三步：客製化選項群組 (Customization Group)
   ========================================================================== */
.option-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.option-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 700;
}

.option-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(65px, 1fr));
  gap: 6px;
}

/* 次要按鈕 - 柔和白色馬卡龍 */
.option-btn {
  background: rgba(255, 255, 255, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--border-radius-btn);
  padding: 10px 4px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition-fast);
  text-align: center;
}

.option-btn:hover {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(85, 194, 139, 0.25);
}

.option-btn.active {
  background: var(--primary-light);
  border-color: var(--primary-color);
  color: #238555;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(85, 194, 139, 0.15);
}

/* ==========================================================================
   數量與送出按鈕 (Quantity & Submit)
   ========================================================================== */
.action-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
  gap: 12px;
}

.quantity-control {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid rgba(85, 194, 139, 0.2);
  border-radius: var(--border-radius-pill);
  padding: 4px 8px;
}

.qty-btn {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 0.95rem;
  width: 30px;
  height: 30px;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 50%;
  transition: var(--transition-fast);
}

.qty-btn:hover {
  background: rgba(85, 194, 139, 0.1);
  color: var(--primary-color);
}

.qty-display {
  font-size: 1rem;
  font-weight: 700;
  min-width: 28px;
  text-align: center;
}

/* 送出按鈕 - 經典薄荷香草清新雙色漸層 */
.submit-btn {
  flex: 1;
  background: linear-gradient(135deg, #a8e6cf 0%, #dcedc1 100%);
  border: none;
  border-radius: var(--border-radius-pill);
  color: #1f3a2c;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 13px 18px;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(168, 230, 207, 0.4);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(168, 230, 207, 0.6);
}

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

/* ==========================================================================
   右側：訂單看板區 (Live Orders Board)
   ========================================================================== */
.status-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid rgba(85, 194, 139, 0.15);
  padding-bottom: 10px;
}

.refresh-btn {
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid rgba(85, 194, 139, 0.2);
  border-radius: var(--border-radius-pill);
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 500;
  padding: 6px 12px;
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 5px;
}

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

.orders-list {
  max-height: 420px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-right: 4px;
}

/* 自訂捲軸樣式 */
.orders-list::-webkit-scrollbar {
  width: 5px;
}
.orders-list::-webkit-scrollbar-track {
  background: transparent;
}
.orders-list::-webkit-scrollbar-thumb {
  background: rgba(85, 194, 139, 0.25);
  border-radius: 3px;
}
.orders-list::-webkit-scrollbar-thumb:hover {
  background: rgba(85, 194, 139, 0.4);
}

.loading-state, .empty-state {
  text-align: center;
  color: var(--text-secondary);
  padding: 30px 10px;
  font-size: 0.85rem;
  font-weight: 500;
}

/* 訂單卡片 */
.order-card {
  background: rgba(255, 255, 255, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--border-radius-btn);
  padding: 12px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition-fast);
}

.order-card:hover {
  background: #ffffff;
  border-color: rgba(85, 194, 139, 0.25);
  box-shadow: 0 4px 15px rgba(165, 185, 175, 0.08);
}

.order-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.order-title {
  font-size: 0.92rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
}

.order-qty {
  font-size: 0.75rem;
  background: var(--primary-light);
  border: 1px solid rgba(85, 194, 139, 0.2);
  padding: 1px 5px;
  border-radius: 4px;
  color: var(--primary-color);
  font-weight: 700;
}

.order-spec {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.order-time {
  font-size: 0.72rem;
  color: #a0b6ab;
}

/* 訂單狀態標籤 - 馬卡龍嫩色 */
.order-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.status-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 9px;
  border-radius: var(--border-radius-pill);
}

.status-badge.pending {
  background: #fff3e0;
  color: #e65100;
  border: 1px solid #ffe0b2;
}

.status-badge.completed {
  background: #e8f5e9;
  color: #2e7d32;
  border: 1px solid #c8e6c9;
}

/* 完成按鈕 (次要按鈕 - 成功配色的清新質感框) */
.complete-btn {
  background: none;
  border: 1px solid rgba(85, 194, 139, 0.4);
  color: var(--primary-color);
  font-size: 0.72rem;
  padding: 4px 9px;
  border-radius: var(--border-radius-pill);
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 3px;
  font-weight: 700;
}

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

/* ==========================================================================
   響應式斷點優化 (Responsive Adjustments) - 由小到大
   ========================================================================== */

/* 1. 中型螢幕平板 (768px 以上)：切換雙欄，間距適度放大 */
@media (min-width: 768px) {
  body {
    padding: 28px;
  }
  
  .app-header {
    margin-bottom: 32px;
  }
  
  .app-header h1 {
    font-size: 2.3rem;
  }
  
  .subtitle {
    font-size: 0.95rem;
  }

  .main-layout {
    grid-template-columns: 1.2fr 1fr;
    gap: 24px;
  }
  
  .card {
    padding: 26px;
  }

  .section-title {
    font-size: 1.15rem;
  }
  
  .drink-grid {
    gap: 12px;
  }
  
  .drink-btn {
    padding: 16px 10px;
  }
  
  .drink-name {
    font-size: 0.9rem;
  }

  .submit-btn {
    font-size: 1.02rem;
  }
}

/* 2. 大型桌面螢幕 (1200px 以上)：大版面增強 */
@media (min-width: 1200px) {
  .app-header h1 {
    font-size: 2.6rem;
  }

  .main-layout {
    gap: 28px;
  }
  
  .card {
    padding: 30px;
    gap: 20px;
  }
  
  .section-title {
    font-size: 1.2rem;
  }

  .orders-list {
    max-height: 480px;
  }
}