/* ===================================
   BorderComfy 舒適邊境 - 樣式表
   玩家級露營枕官方網站
   =================================== */

/* --- 變數定義 --- */
:root {
  /* 顏色 */
  --color-primary: #272120;      /* 深棕色主色 */
  --color-secondary: #8B7355;    /* 駝色次要色 */
  --color-accent: #4A90A4;       /* 藍綠色強調 */
  --color-light: #F5F1EB;        /* 米白色背景 */
  --color-white: #FFFFFF;
  --color-text: #333333;
  --color-text-light: #666666;
  
  /* 字體 */
  --font-heading: 'Futura', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-body: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-serif: 'Didot', 'Times New Roman', serif;
  
  /* 間距 */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 48px;
  --spacing-xl: 80px;
  
  /* 容器寬度 */
  --max-width: 980px;
}

/* --- 重置樣式 --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-light);
}

/* --- 排版 --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
}

h1 { font-size: 56px; }
h2 { font-size: 36px; }
h3 { font-size: 24px; }

p {
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--color-primary);
}

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

/* --- 容器 --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* --- 導航列 --- */
.header {
  background-color: var(--color-white);
  padding: var(--spacing-sm) 0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

.logo img {
  height: 40px;
  width: auto;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}

.nav-menu a {
  font-size: 14px;
  color: var(--color-text);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 4px;
  transition: all 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.social-icons {
  display: flex;
  gap: var(--spacing-xs);
}

.social-icons a img {
  width: 20px;
  height: 20px;
}

/* --- 漢堡選單 --- */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 10px;
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--color-primary);
  transition: all 0.3s ease;
}

/* --- 主要內容區塊 --- */
.hero {
  text-align: center;
  padding: var(--spacing-xl) 0;
  background: linear-gradient(135deg, var(--color-light) 0%, var(--color-white) 100%);
}

.hero h1 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: 18px;
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto var(--spacing-md);
}

/* --- 按鈕 --- */
.btn {
  display: inline-block;
  padding: 12px 32px;
  font-size: 16px;
  font-weight: 500;
  text-align: center;
  border-radius: 30px;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-secondary);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* --- 區塊 --- */
.section {
  padding: var(--spacing-xl) 0;
}

.section-dark {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.section-light {
  background-color: var(--color-white);
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-title h2 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.section-title p {
  color: var(--color-text-light);
  font-size: 18px;
}

/* --- 特色區塊 --- */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
}

.feature-card {
  text-align: center;
  padding: var(--spacing-md) var(--spacing-sm);
}

.feature-card img {
  width: 70px;
  height: 70px;
  margin: 0 auto var(--spacing-sm);
  object-fit: contain;
}

.feature-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  color: var(--color-text-light);
  font-size: 14px;
}

/* --- 圖文區塊 --- */
.image-text-section {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl) 0;
}

.image-text-section.reverse {
  flex-direction: row-reverse;
}

.image-text-section img {
  flex: 1;
  max-width: 50%;
  border-radius: 8px;
}

.image-text-section .text {
  flex: 1;
}

.image-text-section h2 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.image-text-section p {
  color: var(--color-text-light);
  line-height: 1.8;
}

/* --- 見證區塊 --- */
.testimonials {
  background-color: var(--color-light);
  padding: var(--spacing-xl) 0;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.testimonial-card {
  background-color: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.testimonial-card p {
  font-style: italic;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

.testimonial-card .author {
  font-weight: 600;
  color: var(--color-primary);
}

/* --- 零售商區塊 --- */
.retailers {
  padding: var(--spacing-xl) 0;
}

.retailer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.retailer-card {
  background-color: var(--color-white);
  padding: var(--spacing-md);
  border-radius: 8px;
  text-align: center;
}

.retailer-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  font-size: 18px;
}

.retailer-card p {
  color: var(--color-text-light);
  font-size: 14px;
  margin-bottom: 0;
}

/* --- 定價區塊 --- */
.pricing {
  text-align: center;
  padding: var(--spacing-xl) 0;
  background-color: var(--color-white);
}

.price-tag {
  font-size: 48px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.price-tag span {
  font-size: 24px;
  font-weight: 400;
}

/* --- FAQ 區塊 --- */
.faq-section {
  padding: var(--spacing-xl) 0;
}

.faq-item {
  background-color: var(--color-white);
  margin-bottom: var(--spacing-sm);
  border-radius: 8px;
  overflow: hidden;
}

.faq-question {
  padding: var(--spacing-md);
  cursor: pointer;
  font-weight: 600;
  color: var(--color-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-answer {
  padding: 0 var(--spacing-md);
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s ease;
  color: var(--color-text-light);
}

.faq-item.open .faq-answer {
  padding: var(--spacing-md);
  max-height: 500px;
}

/* --- 聯絡表單 --- */
.contact-form {
  background-color: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: 8px;
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 16px;
  font-family: inherit;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

/* --- 頁尾 --- */
.footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-lg) 0;
  text-align: center;
}

.footer p {
  margin-bottom: 0;
  font-size: 14px;
  opacity: 0.8;
}

/* --- 實用連結 --- */
.links-section {
  padding: var(--spacing-xl) 0;
  background-color: var(--color-light);
}

.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.link-card {
  background-color: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: 8px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.link-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.link-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.link-card p {
  color: var(--color-text-light);
  font-size: 14px;
  margin-bottom: var(--spacing-md);
}

/* --- 響應式設計 --- */
@media (max-width: 768px) {
  h1 { font-size: 36px; }
  h2 { font-size: 28px; }
  h3 { font-size: 20px; }
  
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  }
  
  .nav-menu.active {
    display: flex;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .image-text-section,
  .image-text-section.reverse {
    flex-direction: column;
  }
  
  .image-text-section img {
    max-width: 100%;
  }
  
  .retailer-grid {
    grid-template-columns: 1fr;
  }
  
  .features {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .testimonial-grid {
    grid-template-columns: 1fr;
  }
  
  .section {
    padding: var(--spacing-lg) 0;
  }
}

/* --- 動畫 --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

/* --- 實用類別 --- */
.text-center { text-align: center; }
.text-white { color: var(--color-white); }
.mb-0 { margin-bottom: 0; }
.mt-md { margin-top: var(--spacing-md); }
.mb-md { margin-bottom: var(--spacing-md); }