/*
Theme Name: FastSEO
Theme URI: https://example.com/fastseo
Author: FastSEO
Author URI: https://example.com
Description: Theme WordPress tối ưu tốc độ, chuẩn SEO và UX/UI chuyên nghiệp.
Version: 1.0.0
Text Domain: fastseo
Requires at least: 5.8
Tested up to: 6.6
Requires PHP: 7.4
License: GPL-2.0-or-later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
*/
:root{--color-bg:#ffffff;--color-text:#111111;--color-muted:#6b7280;--color-primary:#0d6efd;--max-width:1120px;--radius:10px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif,"Apple Color Emoji","Segoe UI Emoji";color:var(--color-text);background:var(--color-bg);line-height:1.6}
a{color:var(--color-primary);text-decoration:none}
a:hover{text-decoration:underline}
img,svg,video{max-width:100%;height:auto;display:block}
.container{max-width:var(--max-width);margin:0 auto;padding:0 16px}
.site-header{position:sticky;top:0;background:#fff;border-bottom:1px solid #eee;z-index:50}
.site-branding{display:flex;gap:12px;align-items:center;padding:10px 0}
.site-title{font-weight:600;color:var(--color-text)}
.menu-toggle{display:none}
.primary-nav{display:flex;gap:18px;align-items:center}
.primary-nav a{padding:10px 6px;border-radius:6px}
.primary-nav a:hover{background:#f5f5f5}
@media (max-width:960px){.menu-toggle{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border:1px solid #eee;border-radius:8px;background:#fff}.primary-nav{display:none}.primary-nav.open{display:flex;flex-direction:column;padding:8px 0}}
main{display:block}
.content{padding:24px 0}
.post{margin:0 0 24px 0}
.post-title{font-size:clamp(1.25rem,2.5vw,1.75rem);margin:0 0 8px}
.post-meta{color:var(--color-muted);font-size:.9rem}
.post-excerpt{color:#333}
.site-footer{border-top:1px solid #eee;margin-top:24px}
.site-footer .container{padding:24px 0}
.footer-nav{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:10px 14px;border-radius:8px;background:var(--color-primary);color:#fff}
.btn:hover{filter:brightness(0.95)}
table{border-collapse:collapse;width:100%}
th,td{border:1px solid #e5e7eb;padding:8px}
code,pre{font-family:ui-monospace,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace}
.breadcrumbs{color:var(--color-muted);font-size:.9rem;margin:8px 0}
.screen-reader-text{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}