/* Developer Starter v2.0 — RogerCMS */
:root {
    --color-bg: #0a0a15;
    --color-surface: rgba(255,255,255,0.025);
    --color-surface-hover: rgba(255,255,255,0.045);
    --color-border: rgba(255,255,255,0.06);
    --color-text: #d4d4d8;
    --color-text-muted: #71717a;
    --color-text-dim: #3f3f46;
    --color-heading: #fafafa;
    --color-accent: #2BB5B2;
    --color-accent-hover: #24a09d;
    --color-accent-glow: rgba(43,181,178,0.15);
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --max-width: 1100px;
    --content-width: 720px;
    --radius: 14px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: var(--font-main); background: var(--color-bg); color: var(--color-text); line-height: 1.7; font-size: 16px; -webkit-font-smoothing: antialiased; }
a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent-hover); }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.content-narrow { max-width: var(--content-width); margin: 0 auto; }

/* Header */
.site-header { border-bottom: 1px solid var(--color-border); background: rgba(10,10,21,0.85); backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 100; }
.site-header .container { display: flex; justify-content: space-between; align-items: center; height: 64px; }
.site-brand { font-size: 1.25rem; font-weight: 800; letter-spacing: -0.5px; }
.site-brand a { color: var(--color-accent); display: flex; align-items: center; gap: 8px; }
.site-brand img { height: 32px; width: auto; }
.site-nav { display: flex; gap: 6px; align-items: center; }
.site-nav a { color: var(--color-text-muted); font-size: 0.85rem; font-weight: 500; padding: 6px 14px; border-radius: 6px; transition: all var(--transition); }
.site-nav a:hover { color: var(--color-heading); background: var(--color-surface); }
.nav-toggle { display: none; background: none; border: none; color: var(--color-text); font-size: 1.5rem; cursor: pointer; padding: 8px; }

/* Main */
.site-main { padding: 60px 0; min-height: 60vh; }
.home-hero { text-align: center; padding: 30px 0 50px; }
.page-title { font-size: 2.2rem; font-weight: 800; color: var(--color-heading); letter-spacing: -1px; margin-bottom: 8px; line-height: 1.2; }
.page-description { color: var(--color-text-muted); font-size: 1.05rem; max-width: 500px; margin: 0 auto; }

/* Post Cards */
.post-list { display: grid; grid-template-columns: 1fr; gap: 20px; }
.post-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 28px; transition: all var(--transition); position: relative; overflow: hidden; }
.post-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, transparent, var(--color-accent), transparent); opacity: 0; transition: opacity var(--transition); }
.post-card:hover { border-color: rgba(43,181,178,0.25); transform: translateY(-3px); box-shadow: 0 8px 30px rgba(0,0,0,0.3); }
.post-card:hover::before { opacity: 1; }
.post-card-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; letter-spacing: -0.3px; line-height: 1.3; }
.post-card-title a { color: var(--color-heading); }
.post-card-title a:hover { color: var(--color-accent); }
.post-card-meta { font-size: 0.8rem; color: var(--color-text-dim); margin-bottom: 12px; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.post-card-meta .cat-badge { background: var(--color-accent-glow); color: var(--color-accent); padding: 2px 10px; border-radius: 12px; font-size: 0.72rem; font-weight: 600; }
.post-card-excerpt { color: var(--color-text-muted); font-size: 0.93rem; line-height: 1.65; }
.post-card-link { display: inline-flex; align-items: center; gap: 4px; margin-top: 15px; font-size: 0.85rem; font-weight: 600; }
.post-card-link:hover { gap: 8px; }

/* Single */
.single-header { margin-bottom: 40px; padding-bottom: 20px; border-bottom: 1px solid var(--color-border); }
.single-title { font-size: 2.4rem; font-weight: 800; color: var(--color-heading); line-height: 1.25; letter-spacing: -1px; margin-bottom: 15px; }
.single-meta { font-size: 0.85rem; color: var(--color-text-dim); display: flex; gap: 12px; flex-wrap: wrap; }
.single-meta .separator { color: var(--color-text-dim); }
.single-body { font-size: 1.05rem; line-height: 1.85; }
.single-body h2 { color: var(--color-heading); font-size: 1.5rem; font-weight: 700; margin: 40px 0 16px; }
.single-body h3 { color: var(--color-heading); font-size: 1.2rem; font-weight: 600; margin: 30px 0 12px; }
.single-body p { margin-bottom: 20px; }
.single-body ul, .single-body ol { margin: 16px 0 16px 28px; }
.single-body li { margin-bottom: 8px; }
.single-body blockquote { border-left: 3px solid var(--color-accent); padding: 18px 24px; margin: 28px 0; background: var(--color-surface); border-radius: 0 var(--radius) var(--radius) 0; color: var(--color-text-muted); font-style: italic; }
.single-body pre { background: rgba(0,0,0,0.4); padding: 20px; border-radius: var(--radius-sm); overflow-x: auto; margin: 24px 0; font-size: 0.88rem; border: 1px solid var(--color-border); }
.single-body code { background: rgba(0,0,0,0.25); padding: 2px 7px; border-radius: 4px; font-size: 0.88em; color: var(--color-accent); }
.single-tags { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--color-border); display: flex; gap: 8px; flex-wrap: wrap; }
.single-tags .tag { display: inline-block; padding: 4px 14px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 20px; font-size: 0.8rem; color: var(--color-text-muted); transition: all var(--transition); }
.single-tags .tag:hover { border-color: var(--color-accent); color: var(--color-accent); }
.back-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 45px; font-size: 0.9rem; }

/* Sidebar */
.layout-with-sidebar { display: grid; grid-template-columns: 1fr 280px; gap: 40px; align-items: start; }
.sidebar { position: sticky; top: 84px; }
.widget { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 22px; margin-bottom: 16px; }
.widget-title { font-size: 0.8rem; font-weight: 700; color: var(--color-heading); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--color-border); }
.widget-list { list-style: none; }
.widget-list li { padding: 7px 0; border-bottom: 1px solid rgba(255,255,255,0.02); }
.widget-list li:last-child { border-bottom: none; }
.widget-list a { color: var(--color-text-muted); font-size: 0.88rem; display: flex; justify-content: space-between; }
.widget-list a:hover { color: var(--color-accent); }
.widget-list .count { font-size: 0.75rem; color: var(--color-text-dim); background: var(--color-surface); padding: 1px 8px; border-radius: 10px; }

/* Pagination */
.pagination { display: flex; gap: 6px; margin-top: 45px; justify-content: center; }
.pagination a, .pagination span { padding: 8px 15px; border-radius: var(--radius-sm); font-size: 0.85rem; font-weight: 500; }
.pagination a { background: var(--color-surface); color: var(--color-text-muted); border: 1px solid var(--color-border); }
.pagination a:hover { color: var(--color-accent); border-color: var(--color-accent); }
.pagination .current { background: var(--color-accent); color: var(--color-bg); font-weight: 700; }

/* 404 */
.error-404 { text-align: center; padding: 80px 20px; }
.error-404 h1 { font-size: 7rem; font-weight: 900; background: linear-gradient(135deg, var(--color-accent), #6366f1); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 8px; line-height: 1; }
.error-404 h2 { color: var(--color-heading); font-size: 1.4rem; margin-bottom: 12px; }
.error-404 p { color: var(--color-text-muted); margin-bottom: 30px; }
.error-404 .btn-home { display: inline-block; padding: 12px 28px; background: var(--color-accent); color: var(--color-bg); border-radius: var(--radius-sm); font-weight: 600; transition: all var(--transition); }
.error-404 .btn-home:hover { background: var(--color-accent-hover); transform: translateY(-2px); }

/* Footer */
.site-footer { border-top: 1px solid var(--color-border); padding: 45px 0 30px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 35px; }
.footer-brand { font-weight: 800; color: var(--color-accent); font-size: 1.1rem; margin-bottom: 10px; }
.footer-desc { color: var(--color-text-dim); font-size: 0.85rem; line-height: 1.6; max-width: 300px; }
.footer-heading { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; color: var(--color-text-muted); margin-bottom: 14px; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { color: var(--color-text-dim); font-size: 0.85rem; }
.footer-links a:hover { color: var(--color-accent); }
.footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid var(--color-border); color: var(--color-text-dim); font-size: 0.78rem; }
.footer-bottom a { color: var(--color-accent); }

/* Responsive */
@media (max-width: 900px) {
    .layout-with-sidebar { grid-template-columns: 1fr; }
    .sidebar { position: static; }
    .footer-grid { grid-template-columns: 1fr; gap: 25px; }
}
@media (max-width: 768px) {
    .site-header .container { height: 56px; }
    .site-nav { display: none; }
    .site-nav.open { display: flex; flex-direction: column; position: absolute; top: 56px; left: 0; right: 0; background: var(--color-bg); border-bottom: 1px solid var(--color-border); padding: 16px 24px; gap: 4px; }
    .nav-toggle { display: block; }
    .page-title { font-size: 1.6rem; }
    .single-title { font-size: 1.7rem; }
    .post-card { padding: 22px; }
    .error-404 h1 { font-size: 5rem; }
}
@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .single-title { font-size: 1.4rem; }
}