/* ============================================
   贝贝证件照助手 - 全站共享样式
   配色：湖蓝主色 #2B8CFF + 淡蓝背景 #F2F8FF
   ============================================ */

:root {
  --primary: #2B8CFF;
  --primary-dark: #1a6ee0;
  --primary-light: #e8f2ff;
  --bg: #F2F8FF;
  --white: #ffffff;
  --text: #1a2332;
  --text-secondary: #5a6578;
  --border: #d8e8fc;
  --shadow: 0 4px 20px rgba(43, 140, 255, 0.12);
  --shadow-hover: 0 8px 32px rgba(43, 140, 255, 0.22);
  --radius: 14px;
  --container: 1100px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}

/* ===== 导航栏 ===== */
.navbar {
  background: var(--white);
  box-shadow: 0 2px 12px rgba(43, 140, 255, 0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #2B8CFF, #60A5FA);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.5px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 8px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 15px;
  padding: 6px 16px;
  border-radius: 8px;
  transition: all 0.2s;
  font-weight: 500;
}

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

.nav-mini {
  background: var(--primary);
  color: var(--white);
  font-size: 13px;
  padding: 6px 16px;
  border-radius: 20px;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.2s;
}
.nav-mini:hover { background: var(--primary-dark); }

/* ===== 通用容器 ===== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 通用卡片 ===== */
.card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px;
}

/* ===== 通用按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.25s;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 20px rgba(43, 140, 255, 0.35);
  transform: translateY(-1px);
}

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

/* ===== 页面标题 ===== */
.page-header {
  padding: 60px 0 48px;
  text-align: center;
}

.page-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 14px;
}

.page-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

/* ===== 底部栏 ===== */
.footer {
  background: var(--white);
  border-top: 1px solid var(--border);
  padding: 36px 0;
  margin-top: 80px;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-copy {
  font-size: 13px;
  color: var(--text-secondary);
}

.footer-links {
  display: flex;
  gap: 20px;
  list-style: none;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--primary); }

/* ===== 标签 ===== */
.tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}
.tag-blue { background: var(--primary-light); color: var(--primary); }
.tag-green { background: #e6f9f0; color: #27ae60; }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .page-title { font-size: 26px; }
  .card { padding: 24px 20px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}