/* 🤖 public/css/style.css
 * Supermarket Tracker — Mobile First 響應式樣式
 * 設計規範：[CLAUDE.md §3.3] 程式碼風格
 * 響應式斷點：375px → 768px → 1024px → 1920px
 * 最小 touch target：44x44px
 */

/* ==========================================================================
   CSS 變數（粗獷歡樂 Brutalist Joy 配色）
   ========================================================================== */
:root {
  /*核心配色 */
  --yellow: #ffd93d;
  --coral: #ff6b6b;
  --mint: #4ecdc4;
  --lavender: #a78bfa;
  --black: #1a1a1a;
  --white: #ffffff;

  /* 字型 */
  --font-display: "Fredoka", "Noto Sans TC", sans-serif;
  --font-body: "Fredoka", "Noto Sans TC", sans-serif;

  /* 粗黑邊框 */
  --border-thick: 4px solid var(--black);
  --border-thin: 3px solid var(--black);

  /* 硬陰影（撞擊感）*/
  --shadow-sm: 4px 4px 0 var(--black);
  --shadow-md: 6px 6px 0 var(--black);
  --shadow-lg: 8px 8px 0 var(--black);

  /* 過渡 */
  --bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --transition-base: 200ms var(--bounce);

  /* Safe area（iOS 瀏覽器）*/
  --safe-top: env(safe-area-inset-top);
  --safe-bottom: env(safe-area-inset-bottom);
}

/* ==========================================================================
   Reset& Base（所有元素 box-sizing 統一）
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.4;
  color: var(--black);
  background-color: var(--yellow);
  background-image:
    radial-gradient(circle at 15% 10%, var(--coral) 0%, transparent 8%),
    radial-gradient(circle at 85% 20%, var(--mint) 0%, transparent 10%),
    radial-gradient(circle at 50% 80%, var(--lavender) 0%, transparent 12%),
    radial-gradient(var(--black) 1.5px, transparent 1.5px);
  background-size:
    auto,
    auto,
    auto,
    24px 24px;
  background-attachment: fixed;
  min-height: 100vh;
  padding: calc(20px + var(--safe-top)) 16px calc(130px + var(--safe-bottom)) 16px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.1;
}

p {
  line-height: 1.5;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

a {
  text-decoration: none;
  color: inherit;
}

img {
  max-width: 100%;
  height: auto;
}

/* ==========================================================================
   無障礙 Focus樣式（粗黑邊框）
   ========================================================================== */
:focus-visible {
  outline: 4px solid var(--coral);
  outline-offset: 2px;
}

/* ==========================================================================
   卡片元件（粗獷歡樂風格）
   ========================================================================== */
.card {
  background: var(--white);
  border: var(--border-thick);
  box-shadow: var(--shadow-md);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 20px;
}

.card-title {
  font-size: 20px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-description {
  font-size: 14px;
  color: #555;
  margin-bottom: 16px;
}

/* ==========================================================================
   Header
   ========================================================================== */
.app-header {
  text-align: center;
  margin-bottom: 20px;
}

.app-title {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.app-subtitle {
  font-size: 14px;
  color: #555;
  margin-top: 4px;
}

.app-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--white);
  border: var(--border-thin);
  border-radius: 20px;
  padding: 6px 14px;
  margin-top: 10px;
  font-size: 13px;
}

.status-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ccc;
}

.status-indicator.online {
  background: var(--mint);
}

.status-indicator.offline {
  background: var(--coral);
}

.app-status.offline .status-text {
  color: var(--coral);
}

/* ==========================================================================
   瀏覽計數器
   ========================================================================== */
.visit-counter {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--lavender);
  color: var(--white);
  border: var(--border-thin);
  border-radius: 20px;
  padding: 6px 14px;
  margin-top: 10px;
  margin-left: 10px;
  font-size: 13px;
  font-weight: 600;
  vertical-align: middle;
}

.visit-icon {
  font-size: 14px;
}

.visit-label {
  opacity: 0.85;
  font-size: 12px;
}

.visit-count {
  font-weight: 700;
  font-size: 14px;
  min-width: 36px;
  text-align: right;
}

/* ==========================================================================
   主要內容區域
   ========================================================================== */
.app-main {
  max-width: 600px;
  margin: 0 auto;
}

/* ==========================================================================
   拍照辨識區（F-01, F-04, F-05）
   ========================================================================== */
.capture-section {
  /*拍照卡片样式 */
}

.capture-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

/* 拍照按鈕群組 */
.capture-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  width: 100%;
}

/* 主要操作按鈕（最小 44x44px touch target）*/
.btn-capture-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 44px;
  min-height: 44px;
  padding: 12px 20px;
  background: var(--yellow);
  border: var(--border-thick);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  font-size: 16px;
  font-weight: 600;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
}

.btn-capture-action:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-capture-action:active {
  transform: translateY(2px) translateX(2px);
  box-shadow: 2px 2px 0 var(--black);
}

.btn-capture-action .btn-icon {
  font-size: 24px;
}

/* 相機按鈕（主要）*/
.btn-capture-primary {
  background: #81D8D0;
  color: var(--white);
}

.btn-capture-primary:hover {
  transform: translateY(-3px) rotate(-1deg);
  box-shadow: var(--shadow-lg);
}

.btn-capture-primary:active {
  transform: translateY(2px) translateX(2px) rotate(-1deg);
  box-shadow: 2px 2px 0 var(--black);
}

/* 相簿按鈕（替代）*/
.btn-capture-alt {
  background: var(--mint);
}

/* 按鈕鎖定防誤按（disabled 狀態） */
.btn-disabled,
.file-input-hidden:disabled + label {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
  user-select: none;
}

/* 隱藏的 file input（以 label 作為點擊目標）
 * 注意：不可設 pointer-events: none，否則 label 的 for 關聯會失效 */
.file-input-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

/* 預覽區塊 */
.capture-preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  width: 100%;
}

.preview-img {
  max-width: 100%;
  max-height: 300px;
  border: var(--border-thick);
  border-radius: 12px;
  object-fit: contain;
}

.preview-info {
  font-size: 13px;
  color: #666;
  text-align: center;
}

.preview-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

/* 進度條 */
.capture-progress {
  width: 100%;
  text-align: center;
}

.progress-text {
  font-size: 14px;
  margin-bottom: 8px;
}

.progress-bar-track {
  width: 100%;
  height: 12px;
  background: #eee;
  border: 2px solid var(--black);
  border-radius: 6px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--mint);
  border-radius: 4px;
  transition: width 200ms ease;
}

/* 結果區塊 */
.capture-result {
  width: 100%;
}

.result-card {
  border: var(--border-thick);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
}

.result-success {
  background: #e8f5e9;
  border-color: var(--mint);
}

.result-error {
  background: #ffebee;
  border-color: var(--coral);
}

.result-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 16px;
  margin: 12px 0;
  font-size: 14px;
}

.result-label {
  font-weight: 700;
  opacity: 0.7;
}

.result-value {
  font-weight: 600;
}

.result-action-hint {
  font-size: 13px;
  color: #555;
  margin-top: 8px;
}

.result-error-code {
  font-size: 12px;
  opacity: 0.8;
  margin-top: 4px;
}

/* ==========================================================================
   購物車區（F-06）
   ========================================================================== */
.cart-section {
  /* 購物车卡片样式 */
}

.item-list-toolbar {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.btn-cart-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 44px;
  min-height: 44px;
  padding: 8px 14px;
  background: var(--white);
  border: var(--border-thin);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.btn-cart-action:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn-cart-action:active {
  transform: translateY(1px);
  box-shadow: none;
}

.btn-cart-danger {
  background: #ffebee;
  border-color: var(--coral);
  color: var(--coral);
}

.item-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.item-list-empty,
.item-list-loading,
.item-list-error {
  text-align: center;
  padding: 24px;
  font-size: 14px;
  color: #777;
  background: #f5f5f5;
  border-radius: 8px;
}

.item-list-error {
  color: var(--coral);
  background: #ffebee;
}

/* 購物車商品項目 */
.cart-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--white);
  border: var(--border-thin);
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
}

.cart-item-emoji {
  font-size: 28px;
  flex-shrink: 0;
}

.cart-item-info {
  flex: 1;
  min-width: 0;
}

.cart-item-name {
  font-weight: 600;
  font-size: 15px;
  white-space: normal;
  overflow: visible;
  text-overflow: unset;
  line-height: 1.3;
}

.cart-item-name .name-original {
  display: block;
}

.cart-item-name .name-translation {
  display: block;
  font-size: 13px;
  color: #666;
  font-weight: 400;
}

.cart-item-meta {
  font-size: 12px;
  color: #777;
  margin-top: 2px;
}

.cart-item-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  flex-shrink: 0;
}

.cart-item-price {
  font-weight: 700;
  font-size: 16px;
  cursor: text;
  border-bottom: 1px dashed #aaa;
  padding: 2px 4px;
  border-radius: 4px;
  transition: background 150ms;
}

.cart-item-price:hover {
  background: #fffde7;
}

.cart-item-price:focus {
  outline: 3px solid var(--lavender);
  background: #fffde7;
}

.btn-item-delete {
  width: 32px;
  height: 32px;
  min-width: 32px;
  min-height: 32px;
  border-radius: 50%;
  background: var(--coral);
  color: var(--white);
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--transition-base);
}

.btn-item-delete:hover {
  transform: scale(1.1);
}

.btn-item-delete:active {
  transform: scale(0.95);
}

/* 購物車商品縮圖 */
.cart-item-thumb {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: 8px;
  flex-shrink: 0;
  border: 1px solid var(--border-color, #ddd);
  cursor: zoom-in;
  transition: transform var(--transition-base);
}

.cart-item-thumb:hover {
  transform: scale(1.05);
}

/* 圖片放大 Lightbox */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  cursor: zoom-out;
  padding: 16px;
}

.lightbox-overlay img {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.lightbox-overlay .lightbox-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  font-size: 24px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 購物車總計 */
.cart-summary {
  margin-top: 16px;
  padding: 16px;
  background: var(--yellow);
  border: var(--border-thick);
  border-radius: 12px;
}

.cart-summary h4 {
  font-size: 16px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.summary-rows {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.summary-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

.summary-currency {
  font-weight: 700;
  min-width: 40px;
}

.summary-count {
  color: #555;
  flex: 1;
}

.summary-amount {
  font-weight: 700;
  font-size: 18px;
}

/* 退稅提示 */
.tax-refund-hint {
  margin-top: 10px;
  padding: 8px 12px;
  background: #fff8e1;
  border: 1.5px solid #ffc107;
  border-radius: 8px;
  font-size: 13px;
  color: #5d4037;
  line-height: 1.4;
}

/* ==========================================================================
   外幣雙顯示區（F-07）
   ========================================================================== */
.exchange-section {
  /* 匯率卡片样式 */
}

.exchange-rates {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.exchange-rate-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: #f5f5f5;
  border: 2px solid var(--black);
  border-radius: 8px;
  font-size: 14px;
}

.exchange-rate-currency {
  font-weight: 700;
}

.exchange-rate-value {
  font-weight: 600;
}

.exchange-rate-twd {
  font-size: 12px;
  color: #777;
}

/* ==========================================================================
   底部 Sticky CTA
   ========================================================================== */
.sticky-cta {
  position: fixed;
  bottom: calc(120px + var(--safe-bottom));
  left: 0;
  right: 0;
  padding: 0 16px;
  z-index: 200;
  pointer-events: none;
}

.sticky-cta .btn-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
  padding: 16px 24px;
  background: var(--coral);
  color: var(--white);
  border: var(--border-thick);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  font-size: 18px;
  font-weight: 700;
  pointer-events: auto;
  cursor: pointer;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.sticky-cta .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 10px 10px 0 var(--black);
}

.sticky-cta .btn-primary:active {
  transform: translateY(2px);
  box-shadow: 4px 4px 0 var(--black);
}

/* ==========================================================================
   底部 Tab Bar
   ========================================================================== */
.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-around;
  background: var(--white);
  border-top: var(--border-thick);
  padding: calc(8px + var(--safe-bottom)) 08px;
  z-index: 200;
}

.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 44px;
  min-height: 44px;
  padding: 8px 12px;
  font-size: 11px;
  color: #777;
  text-decoration: none;
  transition: color var(--transition-base);
}

.tab-item.active {
  color: var(--coral);
  font-weight: 700;
}

.tab-icon {
  font-size: 22px;
}

.tab-fab {
  margin-top: -24px;
}

.tab-circle {
  width: 56px;
  height: 56px;
  background: var(--coral);
  border: var(--border-thick);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  box-shadow: var(--shadow-md);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.app-footer {
  text-align: center;
  padding: 20px 0;
  font-size: 12px;
  color: #777;
}

.footer-text {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px;
}

.version-badge,
.tech-badge {
  display: inline-block;
  padding: 2px 8px;
  background: var(--white);
  border: 2px solid var(--black);
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}

/* ==========================================================================
   錯誤提示訊息（通用）
   ========================================================================== */
.error-toast {
  position: fixed;
  top: calc(20px + var(--safe-top));
  left: 50%;
  transform: translateX(-50%);
  background: var(--coral);
  color: var(--white);
  padding: 12px 20px;
  border: var(--border-thick);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  font-size: 14px;
  font-weight: 600;
  z-index: 1000;
  max-width: calc(100vw - 32px);
  text-align: center;
  /* 預設隱藏 */
  display: none;
  opacity: 0;
}

/* Toast 顯示時（.visible class 由 JS 動態新增） */
.error-toast.visible {
  display: block;
  animation: toast-in 300ms var(--bounce) forwards;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

/* ==========================================================================
   App Toast 提示訊息（通用，支援類型）
   ========================================================================== */
.app-toast {
  position: fixed;
  top: calc(20px + var(--safe-top));
  left: 50%;
  transform: translateX(-50%);
  color: var(--white);
  background: #ff6b6b !important; /* 預設珊瑚紅背景，確保可讀性 */
  padding: 12px 20px;
  border: var(--border-thick);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  font-size: 14px;
  font-weight: 600;
  z-index: 1000;
  max-width: calc(100vw - 32px);
  text-align: center;
  /* 預設隱藏 */
  opacity: 0;
  pointer-events: none;
}

/* Toast 顯示時（.visible class 由 JS 動態新增） */
.app-toast.visible {
  display: block !important;
  opacity: 1 !important;
  animation: toast-in 300ms var(--bounce) forwards;
}

.app-toast-info {
  background: var(--blue);
}

.app-toast-error {
  background: var(--coral);
}

.app-toast-success {
  background: var(--green);
}

/* ==========================================================================
   模型載入進度條（F-02）
   ========================================================================== */
.progress-container {
  width: 100%;
  margin-bottom: 16px;
}

.progress-label {
  font-size: 13px;
  margin-bottom: 6px;
  text-align: center;
}

.progress-track {
  width: 100%;
  height: 10px;
  background: #eee;
  border: 2px solid var(--black);
  border-radius: 5px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--lavender);
  border-radius: 3px;
  transition: width 200ms ease;
}

/* ==========================================================================
   響應式斷點（Tablet768px+）
   ========================================================================== */
@media (min-width: 768px) {
  body {
    padding: 24px 24px calc(110px + var(--safe-bottom));
  }

  .app-title {
    font-size: 26px;
  }

  .card {
    padding: 24px;
    margin-bottom: 24px;
  }

  .card-title {
    font-size: 24px;
  }

  .capture-buttons {
    gap: 16px;
  }

  .btn-capture-action {
    padding: 14px 28px;
    font-size: 18px;
  }

  .preview-img {
    max-height: 400px;
  }

  .cart-item {
    padding: 16px;
  }

  .sticky-cta {
    bottom: calc(90px + var(--safe-bottom));
  }
}

/* ==========================================================================
   響應式斷點（Desktop 1024px+）
   ========================================================================== */
@media (min-width: 1024px) {
  body {
    padding: 32px 32px calc(120px + var(--safe-bottom));
  }

  .app-main {
    max-width: 800px;
  }

  .app-title {
    font-size: 30px;
  }

  .card {
    padding: 28px;
    margin-bottom: 28px;
  }

  .capture-buttons {
    gap: 20px;
  }

  .btn-capture-action {
    padding: 16px 32px;
    font-size: 20px;
  }

  .preview-img {
    max-height: 500px;
  }

  .sticky-cta {
    bottom: calc(100px + var(--safe-bottom));
  }
}

/* ==========================================================================
   響應式斷點（Large Desktop 1920px）
   ========================================================================== */
@media (min-width: 1920px) {
  body {
    padding: 40px 40px calc(130px + var(--safe-bottom));
  }

  .app-main {
    max-width: 1000px;
  }

  .app-title {
    font-size: 48px;
  }

  .card {
    padding: 32px;
    margin-bottom: 32px;
  }
}