/* ============================================
   清溪玩 — 全局设计系统
   国风灵植马卡龙风格
   ============================================ */

/* ---- 字体引入 ---- */
@import url('https://cdn.jsdelivr.net/npm/lxgw-wenkai-webfont@1.7.0/style.css');

/* ---- CSS 变量 ---- */
:root {
  /* 马卡龙国风配色 */
  --mint: #A8E6CF;
  --mint-dark: #8DD4B8;
  --mint-soft: #E8F8F0;
  --sakura: #FFD1DC;
  --sakura-soft: #FFF0F3;
  --lavender: #C9B1FF;
  --lavender-soft: #F3EEFF;
  --cream: #F9E4B7;
  --cream-soft: #FDF6E3;
  --sky: #B5D8EB;
  --sky-soft: #EDF6FB;
  --ink: #2D3B2D;
  --paper: #FDFBF7;
  --paper-warm: #F5F0E8;
  --text-muted: #6B7B6B;
  --border: rgba(45, 59, 45, 0.12);

  /* 字体 */
  --font-display: 'LXGW WenKai', 'PingFang SC', 'Microsoft YaHei', serif;
  --font-body: 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;

  /* 间距 */
  --section-gap: 80px;
  --page-padding: 80px;
  --card-padding: 20px;
  --grid-gap: 24px;

  /* 圆角 */
  --radius-card: 16px;
  --radius-pill: 999px;

  /* 过渡 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* ---- 重置 ---- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
  background-color: var(--paper);
  -webkit-font-smoothing: antialiased;
}

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

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

/* ---- 工具类 ---- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--page-padding);
}

.section-title {
  font-family: var(--font-display);
  font-size: 32px;
  color: var(--ink);
  text-align: center;
  margin-bottom: 48px;
}

.section-title::before {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background: var(--mint);
  margin: 0 auto 16px;
  border-radius: 2px;
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--page-padding);
  transition: background var(--transition-normal), backdrop-filter var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(253, 251, 247, 0.85);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--ink);
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: var(--mint);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.navbar-nav a {
  font-size: 15px;
  color: var(--ink);
  position: relative;
  padding: 4px 0;
  transition: color var(--transition-fast);
}

.navbar-nav a:hover,
.navbar-nav a.active {
  color: var(--mint-dark);
}

.navbar-nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--mint);
  border-radius: 1px;
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ink);
  border-radius: 1px;
  transition: var(--transition-fast);
}

/* ============================================
   页脚
   ============================================ */
.footer {
  background: var(--ink);
  color: var(--paper);
  padding: 40px var(--page-padding);
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 20px;
  margin-bottom: 16px;
  opacity: 0.9;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 16px;
  opacity: 0.7;
  font-size: 13px;
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 20px;
}

.social-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: background var(--transition-fast);
}

.social-icon:hover {
  background: rgba(255,255,255,0.2);
}

.footer-icp {
  font-size: 12px;
  opacity: 0.5;
}

.footer-icp p {
  margin-bottom: 4px;
}

/* ============================================
   按钮
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 32px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.btn:hover {
  transform: scale(1.05);
}

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

.btn-primary:hover {
  background: var(--mint);
}

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

.btn-secondary:hover {
  background: var(--mint);
  color: var(--ink);
}

/* ============================================
   产品卡片
   ============================================ */
.product-card {
  background: #fff;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(45, 59, 45, 0.1);
  border-color: var(--mint);
}

.card-cover {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--mint-soft) 0%, var(--sky-soft) 50%, var(--lavender-soft) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
}

.card-body {
  padding: var(--card-padding);
}

.card-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 8px;
}

.card-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 500;
}

.tag-type {
  background: var(--mint-soft);
  color: var(--ink);
}

.tag-status-upcoming {
  background: var(--sakura-soft);
  color: #5C2D3A;
}

.tag-status-online {
  background: #E8F5E9;
  color: #2E7D32;
}

.tag-status-dev {
  background: var(--lavender-soft);
  color: var(--ink);
}

.card-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 12px;
}

.card-action {
  font-size: 14px;
  color: var(--mint-dark);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition-fast);
  cursor: pointer;
}

.card-action:hover {
  gap: 8px;
}

/* ============================================
   联系卡片
   ============================================ */
.contact-card {
  background: #fff;
  border-radius: var(--radius-card);
  padding: 32px 24px;
  text-align: center;
  border-top: 4px solid var(--mint);
  box-shadow: 0 4px 20px rgba(45, 59, 45, 0.06);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(45, 59, 45, 0.1);
}

.contact-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--mint-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin: 0 auto 16px;
}

.contact-title {
  font-family: var(--font-display);
  font-size: 18px;
  margin-bottom: 8px;
}

.contact-email {
  font-size: 14px;
  color: var(--text-muted);
}

/* ============================================
   表单
   ============================================ */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--ink);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 14px;
  font-family: var(--font-body);
  color: var(--ink);
  background: #fff;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--mint);
  box-shadow: 0 0 0 3px var(--mint-soft);
}

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

/* ============================================
   响应式
   ============================================ */
@media (max-width: 768px) {
  :root {
    --page-padding: 40px;
    --section-gap: 60px;
  }

  .navbar-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(253, 251, 247, 0.95);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 20px var(--page-padding);
    gap: 16px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  }

  .navbar-nav.open {
    display: flex;
  }

  .menu-toggle {
    display: flex;
  }

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

  .navbar-brand {
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  :root {
    --page-padding: 24px;
  }

  .section-title {
    font-size: 22px;
  }
}

/* ============================================
   滚动动画
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}