/*
Theme Name: Kakobuy Spreadsheet SEO Theme
Theme URI: https://sheetfinds.com/
Description: A lightweight, ultra-fast SEO landing page theme for Kakobuy Spreadsheet affiliate navigation.
Version: 1.0
Author: SEO Expert
Author URI: https://sheetfinds.com/
License: GNU General Public License v2 or later
Text Domain: kakobuy-seo
*/

/* --- 基础重置与欧美清新配色 --- */
:root {
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --primary-color: #0ea5e9; /* 天蓝色点缀 */
    --primary-hover: #0284c7;
    --accent-color: #10b981;  /* 薄荷绿（用于Buy It Now等高转化按钮） */
    --accent-hover: #059669;
    --border-color: #e2e8f0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}
a:hover {
    color: var(--primary-hover);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- 导航栏 --- */
header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}
.logo a {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-main);
}

/* 下拉菜单样式 */
.nav-menu {
    display: flex;
    gap: 20px;
    list-style: none;
    margin: 0;
    padding: 0;
}
.dropdown {
    position: relative;
}
.dropdown-toggle {
    font-weight: 500;
    cursor: pointer;
    padding: 10px 15px;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 16px;
}
.dropdown-menu {
    display: none;
    position: absolute;
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05);
    min-width: 220px;
    list-style: none;
    padding: 8px 0;
    margin: 5px 0 0 0;
}
.dropdown:hover .dropdown-menu {
    display: block;
}
.dropdown-menu li a {
    display: block;
    padding: 10px 20px;
    color: var(--text-main);
    font-size: 14px;
}
.dropdown-menu li a:hover {
    background-color: var(--bg-color);
    color: var(--primary-color);
}

/* --- Hero 核心转化区 --- */
.hero-section {
    text-align: center;
    padding: 60px 0;
    background: radial-gradient(circle at top, #f0fdf4 0%, var(--bg-color) 100%);
}
.hero-section h1 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 15px;
    letter-spacing: -0.025em;
}
.hero-section p {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 30px auto;
}
.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
}
.btn {
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 16px;
    text-align: center;
    display: inline-block;
}
.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
}
.btn-primary:hover {
    background-color: var(--primary-hover);
    color: #fff;
}
.btn-accent {
    background-color: var(--accent-color);
    color: #fff;
}
.btn-accent:hover {
    background-color: var(--accent-hover);
    color: #fff;
}

/* --- 分类网格区 --- */
.section-title {
    text-align: center;
    font-size: 28px;
    margin: 40px 0 20px 0;
    font-weight: 700;
}
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 15px;
    margin-bottom: 50px;
}
.category-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    font-weight: 600;
    box-shadow: 0 1px 3px rgba(0,0,0,0.02);
    transition: all 0.2s ease;
    color: var(--text-main);
}
.category-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* --- 文章列表区 --- */
.article-section {
    background-color: var(--card-bg);
    padding: 50px 0;
    border-top: 1px solid var(--border-color);
}
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}
.article-card {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 25px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: var(--bg-color);
}
.article-card h3 {
    margin: 0 0 10px 0;
    font-size: 20px;
}
.article-card p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 20px;
}

/* --- 单篇文章与内链样式 --- */
.single-post-wrap {
    background: var(--card-bg);
    padding: 40px;
    margin: 30px auto;
    border-radius: 12px;
    max-width: 800px;
    border: 1px solid var(--border-color);
}
.internal-back-link {
    display: inline-block;
    margin-bottom: 20px;
    font-weight: 500;
}
.post-content h2, .post-content h3 {
    margin-top: 30px;
}

/* --- 页脚 --- */
footer {
    text-align: center;
    padding: 30px;
    color: var(--text-muted);
    font-size: 14px;
    border-top: 1px solid var(--border-color);
    background: var(--card-bg);
}