/*
Theme Name: Ultra LabS V2
Theme URI: https://example.com/ultralabs-v2
Author: OpenAI
Description: Premium EN-only WordPress theme for language learning, tools, quizzes, and daily practice.
Version: 2.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.4
Text Domain: ultralabs-v2
*/
:root{
  --bg:#f6f7ff;
  --surface:#ffffff;
  --surface-2:#f9fafe;
  --text:#0f172a;
  --muted:#64748b;
  --line:#e7eaf7;
  --primary:#3b82f6;
  --secondary:#7c3aed;
  --accent:#8b5cf6;
  --grad:linear-gradient(135deg,#3b82f6 0%,#7c3aed 55%,#8b5cf6 100%);
  --shadow:0 20px 60px rgba(43,70,167,.12);
  --radius:22px;
  --radius-sm:16px;
  --container:min(1180px, calc(100% - 32px));
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at top left, rgba(124,58,237,.10), transparent 30%),
    radial-gradient(circle at top right, rgba(59,130,246,.12), transparent 25%),
    var(--bg);
  line-height:1.65;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{opacity:.9}
.container{width:var(--container);margin:0 auto}
.site-header{
  position:sticky;top:0;z-index:40;
  backdrop-filter: blur(12px);
  background:rgba(255,255,255,.82);
  border-bottom:1px solid rgba(231,234,247,.8);
}
.header-row{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 0}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);font-weight:800;font-size:1.15rem}
.brand-mark{
  width:42px;height:42px;border-radius:14px;background:var(--grad);
  box-shadow:0 12px 30px rgba(124,58,237,.35);
  display:grid;place-items:center;color:#fff;font-weight:900;
}
.site-nav ul{display:flex;gap:20px;list-style:none;margin:0;padding:0;align-items:center}
.site-nav a{color:#1e293b;font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px}
.search-wrap{display:flex;align-items:center;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 12px;min-width:210px}
.search-wrap input{border:none;outline:none;width:100%;background:transparent}
.btn,.wp-block-button__link,.comment-form input[type=submit],button,.button{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 20px;border-radius:999px;border:none;cursor:pointer;font-weight:700;
  text-decoration:none;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 14px 32px rgba(79,70,229,.24)}
.btn-secondary{background:#fff;color:var(--text);border:1px solid var(--line)}
.btn-ghost{background:rgba(255,255,255,.78);color:var(--text);border:1px solid rgba(255,255,255,.5)}
.hero{padding:64px 0 32px}
.hero-grid{
  display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:center
}
.hero-copy h1{
  margin:0 0 16px;font-size:clamp(2.3rem,5vw,4.4rem);line-height:1.04;letter-spacing:-.04em
}
.gradient-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-copy p{font-size:1.08rem;color:var(--muted);max-width:62ch;margin:0 0 24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:0 0 24px}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px}
.badge{
  display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:999px;
  background:rgba(255,255,255,.78);border:1px solid rgba(231,234,247,.95);color:#334155;font-weight:700
}
.hero-panel{
  position:relative;background:linear-gradient(180deg, rgba(255,255,255,.88), rgba(255,255,255,.72));
  border:1px solid rgba(255,255,255,.6);border-radius:28px;padding:24px;box-shadow:var(--shadow);overflow:hidden
}
.hero-panel:before,.hero-panel:after{
  content:"";position:absolute;border-radius:999px;filter:blur(14px);opacity:.65
}
.hero-panel:before{width:140px;height:140px;right:-25px;top:-20px;background:rgba(59,130,246,.24)}
.hero-panel:after{width:160px;height:160px;left:-35px;bottom:-50px;background:rgba(124,58,237,.25)}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:16px}
.stat{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px;position:relative;z-index:1
}
.stat strong{display:block;font-size:1.45rem}
.hero-panel .mini-card{
  position:relative;z-index:1;background:#fff;border:1px solid var(--line);
  border-radius:18px;padding:18px;margin-top:16px
}
.section{padding:30px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:22px}
.section-head h2{margin:0;font-size:clamp(1.8rem,4vw,2.8rem);line-height:1.1;letter-spacing:-.03em}
.section-head p{margin:10px 0 0;color:var(--muted);max-width:62ch}
.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.lang-card,.tool-card,.feature-card,.post-card,.lesson-card{
  background:rgba(255,255,255,.86);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.8);
  border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);position:relative;overflow:hidden
}
.lang-card:before,.tool-card:before{
  content:"";position:absolute;inset:auto -10% -40% auto;width:180px;height:180px;border-radius:50%;
  background:linear-gradient(135deg, rgba(59,130,246,.12), rgba(124,58,237,.12));filter:blur(8px)
}
.lang-top{display:flex;align-items:center;gap:16px;margin-bottom:12px}
.flag-icon{
  width:62px;height:62px;border-radius:18px;display:grid;place-items:center;font-size:1.8rem;
  border:1px solid rgba(255,255,255,.8);box-shadow:inset 0 1px 0 rgba(255,255,255,.8), 0 10px 24px rgba(79,70,229,.12)
}
.flag-en{background:linear-gradient(135deg,#dbeafe,#eff6ff)}
.flag-fr{background:linear-gradient(135deg,#dbeafe,#ffe4e6)}
.flag-es{background:linear-gradient(135deg,#fef3c7,#fee2e2)}
.flag-ar{background:linear-gradient(135deg,#dcfce7,#ecfeff)}
.lang-card h3,.tool-card h3,.feature-card h3,.post-card h3,.lesson-card h3{margin:0 0 10px;font-size:1.25rem}
.lang-card p,.tool-card p,.feature-card p,.post-card p,.lesson-card p{margin:0;color:var(--muted)}
.lang-list,.tool-meta{margin:14px 0 18px;padding:0;list-style:none;display:grid;gap:8px}
.lang-list li,.tool-meta li{display:flex;align-items:center;gap:10px;color:#334155}
.dot{width:10px;height:10px;border-radius:999px;background:var(--grad);display:inline-block;flex:0 0 10px}
.card-actions{display:flex;gap:10px;flex-wrap:wrap}
.tools-shell{
  background:linear-gradient(180deg, rgba(255,255,255,.75), rgba(255,255,255,.62));
  border:1px solid rgba(255,255,255,.72);padding:24px;border-radius:28px;box-shadow:var(--shadow)
}
.tools-search{
  display:flex;align-items:center;background:#fff;border:1px solid var(--line);border-radius:999px;padding:12px 16px;margin-bottom:20px
}
.tools-search input{border:none;outline:none;background:transparent;width:100%;font-size:1rem}
.tools-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.tool-card{min-height:215px}
.tool-icon{
  width:54px;height:54px;border-radius:16px;display:grid;place-items:center;margin-bottom:14px;
  background:var(--grad);color:#fff;font-size:1.35rem;box-shadow:0 12px 26px rgba(79,70,229,.25)
}
.tool-tag{
  display:inline-flex;padding:7px 11px;border-radius:999px;background:#f4f7ff;border:1px solid var(--line);font-size:.84rem;font-weight:700;color:#475569
}
.feature-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feature-card{
  text-align:center;padding:24px
}
.feature-number{font-size:2rem;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:8px}
.lesson-grid,.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.lesson-pill{
  display:inline-flex;padding:8px 10px;border-radius:999px;background:#eef2ff;border:1px solid var(--line);font-size:.82rem;font-weight:700;color:#4f46e5;margin-bottom:12px
}
.newsletter{
  background:var(--grad);color:#fff;border-radius:30px;padding:34px;box-shadow:0 28px 60px rgba(79,70,229,.26)
}
.newsletter-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:center}
.newsletter h2{margin:0 0 12px;font-size:clamp(1.9rem,4vw,3rem);line-height:1.05}
.newsletter p{margin:0;color:rgba(255,255,255,.88)}
.newsletter form{display:flex;gap:12px;background:rgba(255,255,255,.15);padding:12px;border-radius:999px;border:1px solid rgba(255,255,255,.22)}
.newsletter input{flex:1;background:transparent;border:none;outline:none;color:#fff}
.newsletter input::placeholder{color:rgba(255,255,255,.8)}
.newsletter .btn-secondary{border:none}
.ad-slot{
  margin:26px 0;padding:18px;border-radius:20px;border:1.5px dashed #cbd5e1;background:#fff;text-align:center;color:#64748b;font-weight:700
}
.site-main{padding:26px 0 52px}
.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:28px}
.content-card{
  background:rgba(255,255,255,.9);border:1px solid rgba(255,255,255,.78);border-radius:26px;padding:28px;box-shadow:var(--shadow)
}
.sidebar-card{
  background:rgba(255,255,255,.86);border:1px solid rgba(255,255,255,.82);border-radius:24px;padding:22px;box-shadow:var(--shadow);margin-bottom:22px
}
.entry-title{font-size:clamp(2rem,4vw,3rem);line-height:1.08;letter-spacing:-.035em;margin:0 0 14px}
.entry-meta,.archive-desc,.muted{color:var(--muted)}
.archive-header{margin-bottom:20px}
.page-header{padding:46px 0 12px}
.page-header h1{font-size:clamp(2rem,4.5vw,3.4rem);margin:0}
.tools-hub-filter{margin:0 0 22px}
.pagination,.nav-links{display:flex;gap:10px;flex-wrap:wrap}
.site-footer{border-top:1px solid rgba(231,234,247,.9);padding:36px 0 50px;background:rgba(255,255,255,.58)}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:22px}
.footer-links{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.footer-note{margin-top:14px;color:var(--muted)}
.custom-logo{max-height:42px;width:auto}
.wp-block-image img,.post-thumbnail img{border-radius:18px}
ul,ol{padding-left:20px}
blockquote{
  margin:24px 0;padding:16px 20px;border-left:4px solid var(--primary);background:#f8fbff;border-radius:16px;color:#334155
}
@media (max-width: 1100px){
  .card-grid,.tools-grid,.feature-strip{grid-template-columns:repeat(2,1fr)}
  .lesson-grid,.post-grid{grid-template-columns:1fr 1fr}
  .hero-grid,.newsletter-grid,.content-grid,.footer-grid{grid-template-columns:1fr}
}
@media (max-width: 760px){
  .header-row{flex-wrap:wrap}
  .site-nav{order:3;width:100%}
  .site-nav ul{flex-wrap:wrap;justify-content:center}
  .search-wrap{min-width:0;flex:1}
  .hero{padding-top:28px}
  .card-grid,.tools-grid,.feature-strip,.lesson-grid,.post-grid{grid-template-columns:1fr}
  .content-card,.sidebar-card,.lang-card,.tool-card,.feature-card,.post-card,.lesson-card,.hero-panel,.newsletter{padding:20px}
}