/*
Theme Name: IT & AI Tribune
Theme URI: https://example.com
Author: Angelina
Author URI: https://example.com
Description: Custom news theme for an IT & AI news portal. Features a rotating breaking-news ticker, featured post slider, popular/latest sidebar tabs, About and Contacts page templates, and a working AJAX contact form. Bilingual-ready (RU/EN switch link in footer).
Version: 1.0.1
Requires at least: 6.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: LICENSE
Text Domain: itai-tribune
*/

/* ==========================================================================
   0. Fonts & variables
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,500;0,600;0,700;1,600&family=Inter:wght@400;500;600;700&display=swap');

:root{
	--c-navy-950:#070c1e;
	--c-navy-900:#0a1128;
	--c-navy-800:#0d1b3e;
	--c-navy-700:#122552;
	--c-blue-500:#2596ff;
	--c-blue-400:#3fd0ff;
	--c-blue-300:#7fe3ff;
	--c-ink:#1b2230;
	--c-ink-soft:#4a5164;
	--c-paper:#ffffff;
	--c-paper-soft:#f6f7fb;
	--c-line:#e7e9f0;
	--c-yellow:#f5c518;
	--c-black:#101216;
	--radius:10px;
	--maxw:1240px;
	--font-head:'Playfair Display', Georgia, serif;
	--font-body:'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ==========================================================================
   1. Reset & base
   ========================================================================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
	margin:0;
	font-family:var(--font-body);
	color:var(--c-ink);
	background:var(--c-paper);
	line-height:1.55;
	font-size:16px;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
button{font-family:inherit;cursor:pointer;}
input,textarea{font-family:inherit;font-size:15px;}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:600;line-height:1.2;margin:0 0 .5em;color:var(--c-ink);}
p{margin:0 0 1em;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.screen-reader-text{position:absolute;left:-9999px;}
main{display:block;}

/* ==========================================================================
   2. Top bar / header
   ========================================================================== */
.site-header{background:var(--c-paper);border-bottom:1px solid var(--c-line);position:relative;z-index:50;}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:16px 0;gap:24px;}
.topbar .brand{display:flex;align-items:center;gap:10px;font-family:var(--font-head);font-size:22px;font-weight:700;color:var(--c-ink);flex:0 0 auto;}
.topbar .brand img{height:36px;width:auto;}
.primary-nav{flex:1 1 auto;}
.primary-nav ul{display:flex;gap:28px;flex-wrap:wrap;}
.primary-nav a{font-size:15px;font-weight:600;color:var(--c-ink);padding:6px 0;border-bottom:2px solid transparent;transition:.15s;}
.primary-nav a:hover,.primary-nav .current-menu-item a{color:var(--c-blue-500);border-color:var(--c-blue-500);}
.topbar-actions{display:flex;align-items:center;gap:14px;}
.search-toggle{background:none;border:none;color:var(--c-ink);display:flex;padding:6px;}
.search-toggle svg{width:20px;height:20px;}
.trending-btn{border:1px solid var(--c-ink);border-radius:6px;padding:9px 16px;font-size:14px;font-weight:600;background:var(--c-black);color:#fff;white-space:nowrap;}
.trending-btn:hover{background:var(--c-blue-500);border-color:var(--c-blue-500);}
.menu-toggle{display:none;background:none;border:none;font-size:24px;padding:4px 8px;}

.header-search{max-width:var(--maxw);margin:0 auto;padding:0 24px;max-height:0;overflow:hidden;transition:max-height .25s ease;}
.header-search.is-open{max-height:80px;padding-bottom:16px;}
.header-search form{display:flex;gap:8px;}
.header-search input[type="search"]{flex:1;padding:10px 14px;border:1px solid var(--c-line);border-radius:6px;}
.header-search button{padding:10px 18px;border-radius:6px;border:none;background:var(--c-navy-900);color:#fff;font-weight:600;}

/* ==========================================================================
   3. Banner
   ========================================================================== */
.site-banner{
	background:linear-gradient(90deg,rgba(7,12,30,.55),rgba(7,12,30,.15)),url('assets/images/banner.webp') center/cover no-repeat;
	min-height:220px;
	display:flex;align-items:center;justify-content:center;
	position:relative;
}
.site-banner .banner-inner{background:rgba(255,255,255,.94);padding:18px 40px;border-radius:6px;text-align:center;box-shadow:0 10px 30px rgba(0,0,0,.25);}
.site-banner .banner-title{font-family:var(--font-head);font-size:28px;margin:0;color:var(--c-navy-900);letter-spacing:.2px;}
.site-banner .banner-tagline{margin:4px 0 0;font-size:13px;color:var(--c-ink-soft);letter-spacing:.5px;text-transform:uppercase;}

/* ==========================================================================
   4. Breaking news ticker
   ========================================================================== */
.ticker{background:var(--c-black);color:#fff;}
.ticker-inner{display:flex;align-items:center;gap:16px;padding:12px 24px;max-width:var(--maxw);margin:0 auto;}
.ticker-label{background:var(--c-yellow);color:var(--c-black);font-weight:800;font-size:12px;letter-spacing:.06em;padding:6px 12px;border-radius:3px;white-space:nowrap;flex:0 0 auto;}
.ticker-thumb{width:34px;height:34px;border-radius:4px;overflow:hidden;flex:0 0 auto;}
.ticker-thumb img{width:100%;height:100%;object-fit:cover;}
.ticker-track{flex:1 1 auto;min-width:0;overflow:hidden;position:relative;height:20px;}
.ticker-item{position:absolute;inset:0;display:flex;align-items:center;font-size:14px;font-weight:500;opacity:0;transform:translateY(6px);transition:opacity .35s ease,transform .35s ease;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.ticker-item.is-active{opacity:1;transform:translateY(0);}
.ticker-item a{color:#fff;}
.ticker-item a:hover{color:var(--c-blue-300);}
.ticker-controls{display:flex;gap:6px;flex:0 0 auto;}
.ticker-controls button{width:26px;height:26px;border-radius:4px;border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.08);color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;line-height:1;}
.ticker-controls button:hover{background:rgba(255,255,255,.2);}

/* ==========================================================================
   5. Breadcrumbs (inner pages)
   ========================================================================== */
.breadcrumbs{background:var(--c-paper-soft);padding:10px 0;}
.breadcrumbs ul{display:flex;gap:8px;font-size:13px;}
.breadcrumbs li{background:var(--c-paper);border:1px solid var(--c-line);border-radius:4px;padding:4px 10px;color:var(--c-ink-soft);}
.breadcrumbs a{color:var(--c-blue-500);font-weight:600;}
.breadcrumbs li:not(:first-child)::before{content:'\203A  ';color:#b7bcca;}

/* ==========================================================================
   6. Homepage layout
   ========================================================================== */
.home-grid{display:grid;grid-template-columns:280px 1fr 300px;gap:36px;padding:40px 0 64px;align-items:start;}
@media (max-width:1080px){.home-grid{grid-template-columns:1fr 1fr;}.col-sidebar{grid-column:1/-1;}}
@media (max-width:720px){.home-grid{grid-template-columns:1fr;}}

.small-post{padding:16px 0;border-bottom:1px solid var(--c-line);}
.small-post:first-child{padding-top:0;}
.small-post img{border-radius:6px;margin-bottom:10px;aspect-ratio:4/3;object-fit:cover;}
.small-post h3{font-size:16px;margin:0;}
.small-post a{color:var(--c-ink);}
.small-post a:hover{color:var(--c-blue-500);}

.featured-post{position:relative;border-radius:10px;overflow:hidden;background:var(--c-navy-950);margin-bottom:20px;}
.featured-post .fp-slide{display:none;}
.featured-post .fp-slide.is-active{display:block;}
.featured-post img{width:100%;aspect-ratio:16/10;object-fit:cover;opacity:.92;}
.featured-post .fp-nav{position:absolute;top:16px;right:16px;display:flex;gap:6px;z-index:2;}
.featured-post .fp-nav button{width:30px;height:30px;border-radius:6px;border:none;background:rgba(0,0,0,.55);color:#fff;font-size:14px;}
.featured-post .fp-nav button:hover{background:var(--c-blue-500);}
.featured-post .fp-cat{position:absolute;top:16px;left:16px;background:var(--c-blue-500);color:#fff;font-size:11px;font-weight:700;letter-spacing:.05em;padding:5px 10px;border-radius:4px;text-transform:uppercase;z-index:2;}
.featured-title{font-size:34px;margin:0 0 12px;line-height:1.15;}
.featured-title a{color:var(--c-ink);}
.featured-title a:hover{color:var(--c-blue-500);}
.featured-excerpt{color:var(--c-ink-soft);font-size:15.5px;}
.post-meta{font-size:12.5px;color:#8790a3;text-transform:uppercase;letter-spacing:.04em;margin-bottom:8px;}

.article-list{margin-top:8px;}
.article-list .small-post{display:grid;grid-template-columns:110px 1fr;gap:14px;align-items:center;}
.article-list .small-post img{margin-bottom:0;aspect-ratio:1/1;}
.article-list .small-post h3{font-size:15px;}

.sidebar-tabs{display:flex;gap:0;border-bottom:1px solid var(--c-line);margin-bottom:18px;}
.sidebar-tabs button{flex:1;padding:10px 0;font-size:13px;font-weight:800;letter-spacing:.05em;background:var(--c-paper-soft);border:none;color:var(--c-ink-soft);text-transform:uppercase;}
.sidebar-tabs button.is-active{background:var(--c-yellow);color:var(--c-black);}
.sidebar-panel{display:none;}
.sidebar-panel.is-active{display:block;}

/* ==========================================================================
   7. Article / interesting-articles grid page
   ========================================================================== */
.articles-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;padding:40px 0 64px;}
@media (max-width:900px){.articles-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:600px){.articles-grid{grid-template-columns:1fr;}}
.article-card{border:1px solid var(--c-line);border-radius:10px;overflow:hidden;background:var(--c-paper);transition:transform .15s ease,box-shadow .15s ease;}
.article-card:hover{transform:translateY(-3px);box-shadow:0 12px 26px rgba(10,17,40,.1);}
.article-card img{aspect-ratio:16/10;object-fit:cover;}
.article-card .ac-body{padding:16px 18px 20px;}
.article-card h3{font-size:18px;margin-bottom:6px;}
.article-card p{color:var(--c-ink-soft);font-size:14px;}
.pagination{display:flex;gap:8px;justify-content:center;padding-bottom:40px;}
.pagination a,.pagination span{padding:8px 14px;border:1px solid var(--c-line);border-radius:6px;font-size:14px;font-weight:600;}
.pagination .current{background:var(--c-navy-900);color:#fff;border-color:var(--c-navy-900);}

/* ==========================================================================
   8. Static pages (About / Contacts)
   ========================================================================== */
.page-hero{padding:56px 0 24px;}
.page-hero h1{font-size:42px;margin:0;}
.page-content{padding:0 0 64px;max-width:820px;}
.page-content p{color:var(--c-ink-soft);font-size:16px;}
.page-content h2{font-size:24px;margin-top:36px;}

.author-box{display:grid;grid-template-columns:170px 1fr;gap:28px;align-items:start;margin-top:20px;}
@media (max-width:560px){.author-box{grid-template-columns:1fr;}}
.author-box img{border-radius:10px;aspect-ratio:1/1;object-fit:cover;}
.author-box p{font-size:15px;}

.contact-form{max-width:640px;margin-top:24px;}
.form-row{margin-bottom:20px;}
.form-row label{display:block;font-weight:700;font-size:14px;margin-bottom:8px;}
.form-row input,.form-row textarea{width:100%;border:1px solid var(--c-line);border-radius:6px;padding:12px 14px;background:var(--c-paper-soft);}
.form-row textarea{min-height:130px;resize:vertical;}
.form-row input:focus,.form-row textarea:focus{outline:2px solid var(--c-blue-400);background:#fff;}
.btn-submit{background:var(--c-black);color:#fff;border:none;border-radius:6px;padding:13px 30px;font-weight:700;font-size:15px;}
.btn-submit:hover{background:var(--c-blue-500);}
.form-notice{padding:12px 16px;border-radius:6px;margin-bottom:20px;font-size:14px;font-weight:600;}
.form-notice.success{background:#e5f7ec;color:#136a3c;}
.form-notice.error{background:#fdecec;color:#a3231f;}

/* ==========================================================================
   9. Single post
   ========================================================================== */
.single-post-wrap{max-width:800px;padding:40px 0 64px;}
.single-post-wrap .post-thumb{border-radius:10px;margin-bottom:24px;aspect-ratio:16/9;object-fit:cover;}
.single-post-wrap h1{font-size:36px;}
.entry-content{font-size:17px;color:var(--c-ink);}
.entry-content p{margin-bottom:1.3em;}
.entry-content img{border-radius:8px;margin:1.5em 0;}
.entry-content h2{font-size:26px;}
.entry-content h3{font-size:20px;}

/* ==========================================================================
   10. Footer
   ========================================================================== */
.site-footer{background:var(--c-navy-950);color:#c6cbdb;margin-top:20px;}
.footer-inner{padding:44px 0 24px;display:flex;flex-wrap:wrap;gap:32px;justify-content:space-between;}
.footer-brand{display:flex;align-items:center;gap:10px;font-family:var(--font-head);font-size:20px;color:#fff;}
.footer-brand img{height:30px;}
.footer-nav ul{display:flex;gap:22px;flex-wrap:wrap;}
.footer-nav a{font-size:14px;color:#c6cbdb;}
.footer-nav a:hover{color:var(--c-blue-300);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:18px 0;text-align:center;font-size:13px;color:#7d84a0;}

/* Utility */
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);}

/* Mobile nav */
@media (max-width:860px){
	.menu-toggle{display:block;order:3;}
	.primary-nav{order:4;flex:1 0 100%;display:none;}
	.primary-nav.is-open{display:block;}
	.primary-nav ul{flex-direction:column;gap:4px;padding:12px 0;}
	.topbar{flex-wrap:wrap;}
}