/*
Theme Name: imaseo Blog
Theme URI: https://www.imaseo.com
Author: imaseo
Author URI: https://www.imaseo.com
Description: imaseo 自研 SEO/GEO 博客主题，基于 WordPress Twenty Twenty-Five 二开，配色对齐 imaseo.com 品牌视觉体系。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.9
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: imaseo-blog
Tags: blog, seo, custom-colors, responsive-layout, two-columns
*/

/* ============================================================
   CSS 变量 & Reset
   ============================================================ */
:root {
  /* 品牌色 */
  --primary:        #3b82f6;
  --primary-dark:   #2563eb;
  --primary-light:  #eff6ff;
  --secondary:      #8b5cf6;
  --secondary-light:#f5f3ff;
  --accent:         #06b6d4;
  --accent-light:   #ecfeff;
  --green:          #10b981;
  --pink:           #ec4899;

  /* 渐变 */
  --grad-primary:   linear-gradient(135deg, #3b82f6, #8b5cf6);
  --grad-hero:      linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);

  /* 中性色 */
  --gray-50:  #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-900: #111827;

  /* 排版 */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", Consolas, monospace;

  /* 尺寸 */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --nav-h:     60px;
  --content-w: 1200px;
  --sidebar-w: 280px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  color: var(--gray-700);
  background: #fff;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }

/* ============================================================
   全局布局
   ============================================================ */
.ima-container {
  max-width: var(--content-w);
  margin: 0 auto;
  padding: 0 20px;
}

/* ============================================================
   导航栏
   ============================================================ */
.ima-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
}
.ima-nav .ima-container {
  display: flex;
  align-items: center;
  gap: 32px;
  width: 100%;
}
.ima-nav-logo {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-shrink: 0;
  text-decoration: none;
}
.ima-nav-logo-icon {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 15px;
  font-weight: 700;
}
.ima-nav-logo-text {
  font-size: 17px;
  font-weight: 700;
  color: var(--gray-900);
}
.ima-nav-logo-text span { color: var(--primary); }

.ima-nav-links {
  display: flex;
  gap: 6px;
  align-items: center;
}
.ima-nav-links a {
  font-size: 14px;
  color: var(--gray-500);
  padding: 5px 10px;
  border-radius: var(--radius-md);
  transition: color .15s, background .15s;
}
.ima-nav-links a:hover,
.ima-nav-links a.current-menu-item { color: var(--primary); background: var(--primary-light); }

.ima-nav-actions { margin-left: auto; display: flex; gap: 10px; align-items: center; }
.ima-nav-search {
  display: flex;
  align-items: center;
  gap: 7px;
  background: var(--gray-100);
  border-radius: 20px;
  padding: 6px 14px;
  border: 1px solid transparent;
  transition: border-color .15s;
}
.ima-nav-search:focus-within { border-color: var(--primary); background: #fff; }
.ima-nav-search input {
  background: transparent;
  border: none;
  outline: none;
  font-size: 13px;
  color: var(--gray-700);
  width: 140px;
}
.ima-nav-search input::placeholder { color: var(--gray-400); }
.ima-btn-cta {
  background: var(--grad-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: 20px;
  border: none;
  white-space: nowrap;
  transition: opacity .15s;
}
.ima-btn-cta:hover { opacity: .88; }

/* 汉堡 */
.ima-nav-toggle { display: none; background: none; border: none; padding: 4px; }
.ima-nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gray-600);
  margin: 4px 0;
  border-radius: 2px;
  transition: transform .2s;
}

/*增加导航样式*/
.ima-nav-links .menu-item{
    list-style: none; /*pc端*/
}
.ima-nav-mobile .menu-item{
    list-style: none; /*移动端*/
}

/* ============================================================
   分类标签栏
   ============================================================ */
.ima-cat-bar {
  border-bottom: 1px solid var(--gray-200);
  background: #fff;
  position: sticky;
  top: var(--nav-h);
  z-index: 90;
}
.ima-cat-bar .ima-container {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.ima-cat-bar .ima-container::-webkit-scrollbar { display: none; }
.ima-cat-btn {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--gray-500);
  white-space: nowrap;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color .15s, border-color .15s;
}
.ima-cat-btn:hover { color: var(--primary); }
.ima-cat-btn.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 500; }

/* ============================================================
   双栏页面骨架
   ============================================================ */
.ima-page {
  padding: 32px 0 60px;
}
.ima-layout {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-w);
  gap: 32px;
  align-items: start;
}

/* ============================================================
   卡片通用
   ============================================================ */
.ima-card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow .2s, transform .2s;
}
.ima-card:hover {
  box-shadow: 0 8px 24px rgba(59,130,246,.1);
  transform: translateY(-2px);
}

/* 分类徽章 */
.ima-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
}
.ima-badge-blue   { background: var(--primary-light); color: var(--primary-dark); }
.ima-badge-purple { background: var(--secondary-light); color: #6d28d9; }
.ima-badge-cyan   { background: var(--accent-light); color: #0891b2; }
.ima-badge-green  { background: #ecfdf5; color: #065f46; }
.ima-badge-pink   { background: #fdf2f8; color: #9d174d; }

/* ============================================================
   侧边栏
   ============================================================ */
.ima-sidebar { display: flex; flex-direction: column; gap: 20px; }
.ima-widget {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.ima-widget-hdr {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 16px 12px;
  border-bottom: 1px solid var(--gray-100);
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-900);
}
.ima-widget-hdr::before {
  content: '';
  width: 3px;
  height: 14px;
  border-radius: 2px;
  background: var(--grad-primary);
  flex-shrink: 0;
}
.ima-widget-body { padding: 14px 16px; }

/* ============================================================
   作者卡
   ============================================================ */
.ima-author-card { text-align: center; }
.ima-author-av {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin: 0 auto 10px;
}
.ima-author-name { font-size: 15px; font-weight: 600; color: var(--gray-900); margin-bottom: 4px; }
.ima-author-bio { font-size: 12px; color: var(--gray-500); line-height: 1.6; margin-bottom: 12px; }
.ima-btn-subscribe {
  display: block;
  width: 100%;
  padding: 9px;
  background: var(--grad-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  transition: opacity .15s;
}
.ima-btn-subscribe:hover { opacity: .88; }

/* 热门列表 */
.ima-hot-list { display: flex; flex-direction: column; gap: 10px; }
.ima-hot-item { display: flex; gap: 10px; align-items: flex-start; }
.ima-hot-num {
  width: 20px;
  height: 20px;
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}
.ima-hot-num.top { background: var(--grad-primary); color: #fff; }
.ima-hot-num.mid { background: var(--primary-light); color: var(--primary); }
.ima-hot-title { font-size: 13px; color: var(--gray-700); line-height: 1.45; }
.ima-hot-title:hover { color: var(--primary); }

/* 标签云 */
.ima-tag-cloud { display: flex; flex-wrap: wrap; gap: 7px; }
.ima-tag-cloud a {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  border: 1px solid var(--gray-200);
  color: var(--gray-500);
  background: #fff;
  transition: all .15s;
}
.ima-tag-cloud a:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }

/* 订阅框 */
.ima-sub-box { background: var(--primary-light); border-radius: var(--radius-md); padding: 14px; }
.ima-sub-box p { font-size: 12px; color: #1d4ed8; line-height: 1.6; margin-bottom: 10px; }
.ima-sub-input {
  width: 100%;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  border: 1px solid #bfdbfe;
  font-size: 13px;
  outline: none;
  margin-bottom: 8px;
  color: var(--gray-700);
  transition: border-color .15s;
}
.ima-sub-input:focus { border-color: var(--primary); }
.ima-sub-btn {
  width: 100%;
  padding: 9px;
  background: var(--grad-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  transition: opacity .15s;
}
.ima-sub-btn:hover { opacity: .88; }

/* ============================================================
   分页
   ============================================================ */
.ima-pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  padding: 32px 0 0;
}
.ima-pagination a, .ima-pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  font-size: 13px;
  border: 1px solid var(--gray-200);
  color: var(--gray-500);
  background: #fff;
  transition: all .15s;
}
.ima-pagination a:hover { border-color: var(--primary); color: var(--primary); }
.ima-pagination .current { background: var(--grad-primary); color: #fff; border-color: transparent; }

.ima-pagination li {float:left;margin-left:5px;}
/* ============================================================
   Footer
   ============================================================ */
.ima-footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: 40px 0 24px;
  font-size: 13px;
}
.ima-footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}
.ima-footer-brand .ima-nav-logo { margin-bottom: 12px; }
.ima-footer-brand .ima-nav-logo-text { color: #fff; }
.ima-footer-brand p { line-height: 1.7; max-width: 280px; }
.ima-footer-col h4 { font-size: 13px; font-weight: 600; color: #fff; margin-bottom: 12px; }
.ima-footer-col ul { display: flex; flex-direction: column; gap: 8px; }
.ima-footer-col a { color: var(--gray-400); transition: color .15s; }
.ima-footer-col a:hover { color: var(--primary); }
.ima-footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.ima-footer-bottom a { color: var(--gray-400); }
.ima-footer-bottom a:hover { color: var(--primary); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  :root { --sidebar-w: 240px; }
}

@media (max-width: 768px) {
  .ima-layout { grid-template-columns: 1fr; }
  .ima-sidebar { order: -1; }

  .ima-nav-links, .ima-nav-search { display: none; }
  .ima-nav-toggle { display: block; margin-left: auto; }
  .ima-nav .ima-btn-cta { display: none; }

  .ima-nav-mobile {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--gray-200);
    padding: 12px 20px 16px;
    z-index: 99;
    box-shadow: 0 8px 24px rgba(0,0,0,.08);
  }
  .ima-nav-mobile.open { display: block; }
  .ima-nav-mobile a {
    display: block;
    padding: 10px 0;
    font-size: 15px;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-100);
  }
  .ima-nav-mobile a:last-child { border-bottom: none; }

  .ima-footer-inner { grid-template-columns: 1fr; gap: 24px; }
  .ima-footer-bottom { flex-direction: column; align-items: flex-start; }

  .ima-page { padding: 20px 0 40px; }
}

@media (max-width: 480px) {
  .ima-cat-btn { padding: 10px 12px; font-size: 12px; }
  .ima-container { padding: 0 14px; }
}