/* =========================================================
   Ustaad Edu — public stylesheet (redesigned)
   ========================================================= */
:root{
  --primary:#1f6feb;
  --accent:#f59e0b;
  --primary-d:#1552c9;
  --ink:#0d1526;
  --ink-2:#33415c;
  --muted:#64748b;
  --line:#e6ebf3;
  --bg:#ffffff;
  --bg-soft:#f5f8fd;
  --bg-tint:#eef4ff;
  --white:#fff;
  --radius:16px;
  --radius-sm:11px;
  --shadow:0 10px 30px rgba(16,42,90,.08);
  --shadow-lg:0 24px 60px rgba(16,42,90,.16);
  --maxw:1140px;
  --font:'Inter',system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  line-height:1.6;-webkit-font-smoothing:antialiased;font-size:16px;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .4em;color:var(--ink);font-weight:800;letter-spacing:-.02em}
h1{font-size:clamp(2rem,4.6vw,3.2rem)}
h2{font-size:clamp(1.5rem,3vw,2.1rem)}
p{margin:0 0 1rem}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.section{padding:64px 0}
.section-tint{background:var(--bg-soft);border-block:1px solid var(--line)}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--primary);background:var(--bg-tint);padding:6px 13px;border-radius:30px;margin-bottom:14px}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:34px;flex-wrap:wrap}
.section-head h2{margin:0}
.section-head .sub{color:var(--muted);margin:6px 0 0;max-width:560px}
.see-all{font-weight:700;color:var(--primary);white-space:nowrap}
.see-all:hover{color:var(--primary-d)}
.text-center{text-align:center}
.center-head{max-width:640px;margin:0 auto 40px;text-align:center}
.center-head .sub{margin-inline:auto}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:12px;font-weight:700;font-size:.98rem;cursor:pointer;border:1px solid transparent;transition:.18s;line-height:1}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px rgba(31,111,235,.28)}
.btn-primary:hover{background:var(--primary-d);transform:translateY(-2px);box-shadow:0 12px 26px rgba(31,111,235,.36)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-wa{background:#25d366;color:#04381a;box-shadow:0 8px 20px rgba(37,211,102,.32)}
.btn-wa:hover{filter:brightness(1.05);transform:translateY(-2px)}
.btn-lg{padding:15px 30px;font-size:1.05rem}
.btn-block{width:100%;justify-content:center}

/* ---------- Announcement bar ---------- */
.announce{background:linear-gradient(90deg,var(--ink),#1b2a4a);color:#dbe6ff;text-align:center;font-size:.9rem;padding:9px 16px}
.announce a{color:#fff;font-weight:700;text-decoration:underline}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px;gap:18px}
.brand{display:flex;align-items:center;gap:10px}
.brand img{max-height:42px}
.brand-text{font-weight:900;font-size:1.35rem;letter-spacing:-.03em;color:var(--ink)}
.brand-text b{color:var(--primary)}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{color:var(--ink-2);font-weight:600;font-size:.95rem;padding:8px 12px;border-radius:9px;transition:.15s}
.main-nav a:hover{color:var(--primary);background:var(--bg-tint)}
.main-nav .btn-nav{background:var(--primary);color:#fff;padding:9px 17px;margin-left:6px}
.main-nav .btn-nav:hover{background:var(--primary-d);color:#fff}
.nav-toggle{display:none;background:none;border:0;font-size:1.7rem;color:var(--ink);cursor:pointer}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:
    radial-gradient(900px 500px at 80% -10%,rgba(31,111,235,.16),transparent 60%),
    radial-gradient(700px 500px at 0% 20%,rgba(245,158,11,.12),transparent 55%),
    linear-gradient(180deg,#fbfdff,#f2f7ff)}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding:76px 22px 84px}
.hero-text h1{margin-bottom:18px}
.hero-text h1 .grad{background:linear-gradient(100deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero-text p{font-size:1.13rem;color:var(--ink-2);max-width:520px;margin-bottom:28px}
.hero-cta{display:flex;gap:13px;flex-wrap:wrap}
.hero-badges{display:flex;gap:22px;margin-top:30px;flex-wrap:wrap}
.hero-badges span{display:flex;align-items:center;gap:8px;font-size:.9rem;color:var(--ink-2);font-weight:600}
.hero-badges .dot{width:9px;height:9px;border-radius:50%;background:var(--accent)}
.hero-card{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow-lg);padding:26px}
.hero-card .hc-title{font-weight:800;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.subjects{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.subject{display:flex;flex-direction:column;align-items:center;gap:7px;padding:16px 8px;border-radius:14px;background:var(--bg-soft);border:1px solid var(--line);font-size:.82rem;font-weight:700;color:var(--ink-2);text-align:center;transition:.18s}
.subject:hover{transform:translateY(-3px);border-color:var(--primary);color:var(--primary);box-shadow:var(--shadow)}
.subject span{font-size:1.7rem}

/* ---------- Stats band ---------- */
.stats{background:linear-gradient(120deg,var(--primary),var(--primary-d));color:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:44px 0;text-align:center}
.stat b{display:block;font-size:2.4rem;font-weight:900;letter-spacing:-.03em;line-height:1}
.stat span{font-size:.92rem;opacity:.85;font-weight:600}

/* ---------- Feature grid ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;transition:.2s}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-card .fi{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;background:var(--bg-tint);margin-bottom:14px}
.feature-card h3{font-size:1.08rem;margin-bottom:6px}
.feature-card p{color:var(--muted);font-size:.93rem;margin:0}

/* ---------- Card grid (articles / services / classes) ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.2s}
.post-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:transparent}
.post-thumb{height:172px;background-size:cover;background-position:center;background-color:var(--bg-tint)}
.post-thumb-alt{display:flex;align-items:center;justify-content:center;font-size:3rem;font-weight:900;color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent))}
.post-body{padding:20px;flex:1;display:flex;flex-direction:column}
.post-body h3{font-size:1.12rem;margin:8px 0}
.post-body p{color:var(--muted);font-size:.92rem;flex:1;margin:0 0 12px}
.post-meta{color:var(--muted);font-size:.82rem}
.tag{display:inline-block;font-size:.72rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:var(--primary);background:var(--bg-tint);padding:4px 10px;border-radius:20px;margin-right:5px}
.tag-premium{color:#8a5a00;background:#fff3d6}

/* ---------- Classes ---------- */
.class-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;transition:.2s;position:relative}
.class-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:transparent}
.class-card .mode{position:absolute;top:16px;right:16px;font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;padding:4px 10px;border-radius:20px;background:#e7fbef;color:#087a45}
.class-card .mode.onsite{background:#eef1f6;color:#475569}
.class-card .mode.hybrid{background:#eef4ff;color:var(--primary)}
.class-card .lvl{font-size:.78rem;font-weight:800;color:var(--accent);text-transform:uppercase;letter-spacing:.06em}
.class-card h3{font-size:1.16rem;margin:6px 0 8px;max-width:80%}
.class-card p{color:var(--muted);font-size:.92rem;flex:1;margin:0 0 14px}
.class-meta{display:flex;flex-direction:column;gap:7px;font-size:.88rem;color:var(--ink-2);margin-bottom:16px}
.class-meta .cm{display:flex;align-items:center;gap:8px}
.class-meta .cm b{color:var(--ink)}
.class-price{font-weight:900;font-size:1.25rem;color:var(--ink)}
.class-price small{font-weight:600;font-size:.8rem;color:var(--muted)}

/* ---------- Material list ---------- */
.material-list{display:flex;flex-direction:column;gap:12px}
.material-row{display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:15px 18px;transition:.16s}
.material-row:hover{border-color:var(--primary);box-shadow:var(--shadow);transform:translateX(3px)}
.mat-icon{font-size:1.6rem;width:46px;height:46px;flex:none;display:flex;align-items:center;justify-content:center;background:var(--bg-tint);border-radius:11px}
.mat-info{flex:1;display:flex;flex-direction:column}
.mat-info strong{color:var(--ink)}
.mat-info small{color:var(--muted);font-size:.83rem}
.badge{font-size:.72rem;font-weight:800;padding:5px 11px;border-radius:20px;text-transform:uppercase;letter-spacing:.04em}
.badge-free{background:#e7fbef;color:#087a45}
.badge-login{background:var(--bg-tint);color:var(--primary)}
.badge-premium{background:#fff3d6;color:#8a5a00}

/* ---------- Services ---------- */
.service-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;transition:.2s}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.service-card h3{font-size:1.1rem}
.service-card p{color:var(--muted);font-size:.92rem;flex:1}
.service-meta{display:flex;justify-content:space-between;align-items:center;margin-top:12px;padding-top:14px;border-top:1px solid var(--line)}
.service-meta .price{font-weight:800;color:var(--ink)}
.service-meta .days{font-size:.82rem;color:var(--muted)}

/* ---------- Testimonials ---------- */
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.testi-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.testi-stars{color:var(--accent);font-size:1rem;letter-spacing:2px;margin-bottom:12px}
.testi-card blockquote{margin:0 0 18px;font-size:1rem;color:var(--ink-2);line-height:1.65}
.testi-who{display:flex;align-items:center;gap:12px}
.testi-avatar{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;background-size:cover;background-position:center}
.testi-who b{display:block;font-size:.95rem}
.testi-who span{font-size:.82rem;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}
.faq-q{width:100%;text-align:left;background:none;border:0;padding:18px 22px;font-size:1.02rem;font-weight:700;color:var(--ink);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;font-family:inherit}
.faq-q .chev{transition:.2s;color:var(--primary);font-size:1.3rem;line-height:1}
.faq-item.open .chev{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 22px}
.faq-item.open .faq-a{max-height:400px;padding-bottom:18px}
.faq-a p{color:var(--muted);margin:0}

/* ---------- Newsletter ---------- */
.newsletter{background:linear-gradient(120deg,#0f1e3d,#1b336b);color:#fff;border-radius:22px;padding:44px;text-align:center;box-shadow:var(--shadow-lg)}
.newsletter h2{color:#fff}
.newsletter p{color:#c6d4ee;max-width:520px;margin:0 auto 22px}
.news-form{display:flex;gap:10px;max-width:460px;margin:0 auto;flex-wrap:wrap}
.news-form input{flex:1;min-width:210px;padding:14px 16px;border-radius:12px;border:0;font-size:1rem;font-family:inherit}
.news-form .btn{white-space:nowrap}

/* ---------- CTA band ---------- */
.cta-band{background:
    radial-gradient(600px 300px at 100% 0%,rgba(245,158,11,.22),transparent 60%),
    linear-gradient(120deg,var(--primary),var(--primary-d));
  color:#fff;text-align:center;padding:66px 22px}
.cta-band h2{color:#fff;margin-bottom:10px}
.cta-band p{color:#dbe7ff;max-width:560px;margin:0 auto 24px}
.cta-band .btn-ghost{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.3);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff}

/* ---------- Page head ---------- */
.page-head{background:
    radial-gradient(700px 320px at 80% -30%,rgba(31,111,235,.14),transparent 60%),
    linear-gradient(180deg,#fbfdff,#f2f7ff);
  border-bottom:1px solid var(--line);padding:52px 0 46px}
.page-head h1{margin:0}
.page-head p{color:var(--muted);margin:10px 0 0;max-width:640px}
.breadcrumb{font-size:.85rem;color:var(--muted);margin-bottom:12px}
.breadcrumb a{color:var(--muted)}

/* ---------- Filters / search form ---------- */
.search-form{display:flex;gap:10px;margin-bottom:30px;max-width:620px;flex-wrap:wrap}
.search-form input{flex:1;min-width:220px;padding:13px 16px;border:1px solid var(--line);border-radius:12px;font-size:1rem;font-family:inherit}
.search-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,111,235,.15)}
.chips{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:26px}
.chip{padding:7px 15px;border-radius:30px;background:#fff;border:1px solid var(--line);font-size:.88rem;font-weight:600;color:var(--ink-2)}
.chip:hover,.chip.on{background:var(--primary);color:#fff;border-color:var(--primary)}
.related-list{display:flex;flex-direction:column;gap:8px;margin:10px 0 26px}
.related-list a{background:#fff;border:1px solid var(--line);border-radius:10px;padding:13px 16px;font-weight:600;transition:.15s}
.related-list a:hover{border-color:var(--primary);transform:translateX(3px)}

/* ---------- Article single ---------- */
.article-wrap{max-width:760px;margin:0 auto;padding:46px 22px}
.article-wrap h1{margin-bottom:14px}
.article-body{font-size:1.08rem;color:#243}
.article-body img{border-radius:12px;margin:18px 0}
.article-body h2,.article-body h3{margin-top:1.6em}
.paywall{background:linear-gradient(180deg,#fff,var(--bg-soft));border:1px solid var(--line);border-radius:var(--radius);padding:34px;text-align:center;box-shadow:var(--shadow)}
.paywall .lock{font-size:2.6rem;margin-bottom:10px}

/* ---------- Forms / cards ---------- */
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);max-width:640px}
.form-card label{display:block;font-weight:600;font-size:.9rem;margin:14px 0 6px}
.form-card input,.form-card textarea,.form-card select{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:11px;font-size:1rem;font-family:inherit}
.form-card input:focus,.form-card textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,111,235,.15)}
.auth-wrap{max-width:420px;margin:56px auto;padding:0 22px}
.pricing-card{max-width:440px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:20px;padding:34px;text-align:center;box-shadow:var(--shadow-lg)}
.pricing-card .price{font-size:3rem;font-weight:900;color:var(--ink);letter-spacing:-.03em}
.pricing-card .price small{font-size:1rem;color:var(--muted);font-weight:600}
.pricing-card ul{list-style:none;padding:0;margin:22px 0;text-align:left}
.pricing-card li{padding:9px 0;border-bottom:1px solid var(--line);color:var(--ink-2)}
.pricing-card li:before{content:"✓";color:#087a45;font-weight:900;margin-right:9px}

.flash{padding:13px 18px;border-radius:11px;margin:18px 0;font-weight:600}
.flash-success{background:#e7fbef;color:#087a45;border:1px solid #b7ecca}
.flash-error{background:#fdeaea;color:#b42323;border:1px solid #f3c0c0}
.empty{color:var(--muted);text-align:center;padding:40px}

.pagination{display:flex;gap:8px;justify-content:center;margin-top:36px}
.pagination a,.pagination span{padding:9px 15px;border-radius:10px;border:1px solid var(--line);background:#fff;font-weight:600;color:var(--ink-2)}
.pagination .cur{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#aeb9cd;padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:34px;padding-bottom:36px}
.footer-brand{font-weight:900;font-size:1.3rem;color:#fff;margin-bottom:12px;letter-spacing:-.02em}
.site-footer p{color:#93a1ba;font-size:.92rem}
.site-footer h4{color:#fff;font-size:.95rem;margin-bottom:14px;letter-spacing:.02em}
.site-footer .footer-grid a{display:block;color:#aeb9cd;font-size:.92rem;padding:5px 0;transition:.15s}
.site-footer .footer-grid a:hover{color:#fff;padding-left:4px}
.social-row{display:flex;gap:10px;margin-top:8px}
.social-row a{width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,.08);display:flex!important;align-items:center;justify-content:center;padding:0!important;transition:.18s}
.social-row a:hover{background:var(--primary);transform:translateY(-3px)}
.social-row svg{width:18px;height:18px;fill:#fff}
.foot-news input{width:100%;padding:11px 13px;border-radius:10px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);color:#fff;font-size:.92rem;margin-bottom:9px;font-family:inherit}
.foot-news input::placeholder{color:#8a97af}
.foot-news .btn{padding:10px 16px;font-size:.9rem}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 22px;font-size:.85rem;color:#8a97af;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.footer-bottom a{color:#aeb9cd}

/* ---------- Floating WhatsApp ---------- */
.wa-float{position:fixed;right:20px;bottom:20px;z-index:60;width:58px;height:58px;border-radius:50%;background:#25d366;box-shadow:0 10px 26px rgba(37,211,102,.5);display:flex;align-items:center;justify-content:center;transition:.2s}
.wa-float:hover{transform:scale(1.08)}
.wa-float svg{width:30px;height:30px;fill:#fff}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:34px;padding:52px 22px 60px}
  .hero-card{order:-1}
  .feature-grid,.card-grid,.testi-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:30px 20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media(max-width:640px){
  .nav-toggle{display:block}
  .main-nav{position:fixed;inset:70px 0 auto 0;flex-direction:column;align-items:stretch;background:#fff;border-bottom:1px solid var(--line);padding:12px 22px 20px;gap:2px;display:none;box-shadow:var(--shadow-lg)}
  body.nav-open .main-nav{display:flex}
  .main-nav a{padding:12px 10px;border-radius:9px}
  .main-nav .btn-nav{margin:6px 0 0;text-align:center}
  .feature-grid,.card-grid,.testi-grid,.footer-grid{grid-template-columns:1fr}
  .section{padding:48px 0}
  .newsletter{padding:32px 22px}
  .stat b{font-size:2rem}
}