/* =========================================================================
   CTET Assam Premium Theme — main.css
   Variables live in style.css (:root). System fonts only.
   ========================================================================= */

/* ---------- Layout primitives ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}

.section{padding:72px 0;}
.section--alt{background:var(--c-sky);}
.site-content{display:block;}

.section-head{text-align:center;max-width:720px;margin:0 auto 40px;}
.section-head--light .section-title,
.section-head--light .section-lead{color:#fff;}
.section-title{font-size:clamp(1.6rem,1.2rem + 1.6vw,2.3rem);font-weight:800;letter-spacing:-.02em;}
.section-lead{color:var(--c-text-soft);font-size:1.05rem;margin:0;}
.section-cta{text-align:center;margin-top:36px;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:.98rem;line-height:1;
  padding:13px 22px;border-radius:999px;border:2px solid transparent;
  cursor:pointer;transition:transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease;
  text-decoration:none;white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-2px);}
.btn--lg{padding:16px 28px;font-size:1.02rem;}
.btn--block{display:flex;width:100%;}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:0 8px 18px rgba(11,94,215,.28);}
.btn--primary:hover{background:var(--c-primary-dark);color:#fff;}
.btn--yellow{background:var(--c-yellow);color:#3b2f00;box-shadow:0 8px 18px rgba(255,193,7,.32);}
.btn--yellow:hover{background:var(--c-yellow-dark);color:#3b2f00;}
.btn--ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn--ghost:hover{background:var(--c-primary);color:#fff;}
.btn--ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.7);}
.btn--ghost-light:hover{background:#fff;color:var(--c-navy);}

.badge{
  display:inline-block;background:var(--c-sky);color:var(--c-primary);
  font-weight:700;font-size:.82rem;letter-spacing:.02em;
  padding:7px 14px;border-radius:999px;margin-bottom:18px;
  border:1px solid rgba(11,94,215,.18);
}

/* ---------- Top bar ---------- */
.topbar{background:var(--c-navy);color:#cdd9ef;font-size:.84rem;}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:40px;}
.topbar__msg{margin:0;}
.topbar__links{display:flex;gap:18px;align-items:center;}
.topbar__links a{color:#dfe8f7;text-decoration:none;}
.topbar__links a:hover{color:#fff;text-decoration:underline;}
.ico-wa{color:#7ee2a8;}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:900;background:#fff;border-bottom:1px solid var(--c-border);transition:box-shadow .2s ease;}
.site-header.is-stuck{box-shadow:var(--shadow);}
.site-header__inner{display:flex;align-items:center;gap:24px;min-height:72px;}
.site-branding{display:flex;align-items:center;gap:12px;}
.site-branding img,.custom-logo{max-height:48px;width:auto;}
.site-branding__text{display:flex;flex-direction:column;line-height:1.1;text-decoration:none;}
.site-branding__name{font-weight:800;color:var(--c-navy);font-size:1.12rem;letter-spacing:-.01em;}
.site-branding__tag{font-size:.74rem;color:var(--c-text-soft);}

.main-nav{margin-left:auto;}
.nav-menu{list-style:none;display:flex;align-items:center;gap:2px;margin:0;padding:0;}
.nav-menu > li{position:relative;}
.nav-menu a{display:flex;align-items:center;gap:6px;padding:10px 14px;border-radius:10px;color:var(--c-text);font-weight:600;font-size:.96rem;text-decoration:none;white-space:nowrap;}
.nav-menu a:hover,.nav-menu .current-menu-item > a,.nav-menu .current-menu-parent > a{background:var(--c-sky);color:var(--c-primary);}
/* caret on items that have a dropdown */
.nav-menu .menu-item-has-children > a::after{content:"";width:8px;height:8px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .2s ease;opacity:.7;margin-left:2px;}
.nav-menu .menu-item-has-children:hover > a::after,
.nav-menu .menu-item-has-children:focus-within > a::after{transform:rotate(-135deg) translateY(2px);}
/* dropdown */
.nav-menu .sub-menu{
  position:absolute;top:100%;left:0;min-width:230px;background:#fff;border:1px solid var(--c-border);
  border-radius:14px;box-shadow:var(--shadow-lg);padding:8px;z-index:60;list-style:none;margin:0;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .16s ease, transform .16s ease, visibility .16s;
}
.nav-menu > li:hover > .sub-menu,
.nav-menu > li:focus-within > .sub-menu{opacity:1;visibility:visible;transform:translateY(0);}
.nav-menu .sub-menu li{display:block;}
.nav-menu .sub-menu a{font-weight:500;padding:10px 12px;border-radius:9px;}
.nav-menu .sub-menu a::after{display:none;}

.header-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{background:transparent;border:1px solid var(--c-border);width:42px;height:42px;border-radius:12px;cursor:pointer;font-size:1rem;display:inline-flex;align-items:center;justify-content:center;}
.icon-btn:hover{background:var(--c-sky);}
.hamburger{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;border:1px solid var(--c-border);border-radius:12px;background:#fff;cursor:pointer;padding:0 11px;}
.hamburger span{height:2px;background:var(--c-navy);border-radius:2px;transition:.2s;}

/* search overlay */
.search-panel{border-top:1px solid var(--c-border);background:#fff;padding:16px 0;}
.search-panel[hidden]{display:none;}

/* ---------- Mobile nav ---------- */
.mobile-nav{position:fixed;top:0;right:0;height:100%;width:min(86vw,340px);background:#fff;z-index:1100;box-shadow:var(--shadow-lg);padding:18px;overflow-y:auto;transform:translateX(100%);transition:transform .25s ease;}
.mobile-nav.is-open{transform:translateX(0);}
.mobile-nav[hidden]{display:block;} /* keep in DOM for transition; visibility via transform */
.mobile-nav__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.mobile-nav__title{font-weight:800;color:var(--c-navy);}
.mobile-menu{list-style:none;margin:0 0 16px;padding:0;}
.mobile-menu li{position:relative;border-bottom:1px solid var(--c-border);}
.mobile-menu a{display:block;padding:13px 44px 13px 6px;color:var(--c-text);font-weight:600;text-decoration:none;}
.mobile-menu .sub-menu{list-style:none;padding:0 0 8px 12px;margin:0;display:none;}
.mobile-menu .sub-menu li{border-bottom:0;}
.mobile-menu .sub-menu a{padding:10px 6px;font-weight:500;color:var(--c-text-soft);}
.mobile-menu .menu-item-has-children.is-expanded > .sub-menu{display:block;}
.submenu-toggle{position:absolute;top:6px;right:2px;width:36px;height:36px;border:1px solid var(--c-border);border-radius:9px;background:#fff;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;padding:0;}
.submenu-toggle:hover{background:var(--c-sky);}
.submenu-toggle span{display:inline-block;font-size:.8rem;color:var(--c-navy);transition:transform .2s ease;}
.submenu-toggle[aria-expanded="true"] span{transform:rotate(180deg);}
.nav-backdrop{position:fixed;inset:0;background:rgba(7,27,58,.5);z-index:1050;}
.nav-backdrop[hidden]{display:none;}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(135deg,var(--c-navy) 0%,#0c2a5e 45%,var(--c-primary) 120%);color:#fff;padding:78px 0 86px;position:relative;overflow:hidden;}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;background:radial-gradient(circle,rgba(255,193,7,.18),transparent 60%);pointer-events:none;}
.hero__inner{display:grid;grid-template-columns:1.25fr .9fr;gap:48px;align-items:center;position:relative;z-index:1;}
.hero .badge{background:rgba(255,255,255,.14);color:#dfeaff;border-color:rgba(255,255,255,.22);}
.hero__title{color:#fff;font-size:clamp(1.9rem,1.2rem + 2.6vw,3rem);font-weight:800;letter-spacing:-.02em;margin-bottom:16px;}
.hero__sub{color:#d6e2f6;font-size:1.08rem;max-width:60ch;margin:0 0 26px;}
.hero__buttons{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px;}
.hero__buttons .btn--ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.hero__buttons .btn--ghost:hover{background:#fff;color:var(--c-navy);}
.hero__trust{list-style:none;display:flex;flex-wrap:wrap;gap:10px 18px;margin:0;padding:0;font-size:.9rem;color:#cdd9ef;}
.hero__trust li{position:relative;padding-left:20px;}
.hero__trust li::before{content:"✓";position:absolute;left:0;color:#7ee2a8;font-weight:700;}

/* Course card */
.course-card{background:#fff;color:var(--c-text);border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow-lg);}
.course-card__pill{display:inline-block;background:var(--c-yellow);color:#3b2f00;font-weight:700;font-size:.74rem;padding:5px 11px;border-radius:999px;margin-bottom:12px;}
.course-card__title{font-size:1.35rem;font-weight:800;margin:0 0 14px;color:var(--c-navy);}
.course-card__list{list-style:none;margin:0 0 20px;padding:0;}
.course-card__list li{padding:9px 0 9px 28px;border-bottom:1px dashed var(--c-border);position:relative;color:var(--c-text-soft);font-weight:500;}
.course-card__list li:last-child{border-bottom:0;}
.course-card__list li::before{content:"✓";position:absolute;left:0;color:var(--c-green);font-weight:800;}

/* ---------- Stats ---------- */
.stats{background:#fff;border-bottom:1px solid var(--c-border);padding:0;}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.stat{text-align:center;padding:34px 18px;border-right:1px solid var(--c-border);}
.stat:last-child{border-right:0;}
.stat__num{display:block;font-size:1.9rem;font-weight:800;color:var(--c-primary);line-height:1.1;}
.stat__label{display:block;color:var(--c-text-soft);font-size:.92rem;margin-top:6px;}

/* ---------- Card grids ---------- */
.card-grid{display:grid;gap:var(--gap);}
.card-grid--3{grid-template-columns:repeat(3,1fr);}
.card-grid--4{grid-template-columns:repeat(4,1fr);}

/* Feature card (quick access) */
.feature-card{background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(11,94,215,.35);}
.feature-card__icon{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:14px;background:var(--c-sky);font-size:1.5rem;margin-bottom:14px;}
.feature-card__title{font-size:1.12rem;font-weight:700;margin:0 0 6px;}
.feature-card__desc{color:var(--c-text-soft);font-size:.94rem;margin:0 0 14px;}
.feature-card__link{font-weight:700;color:var(--c-primary);text-decoration:none;}
.feature-card__link:hover{text-decoration:underline;}

/* Course section */
.course-section__inner{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.course-features{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.course-features li{display:flex;align-items:flex-start;gap:10px;background:var(--c-card);border:1px solid var(--c-border);border-radius:12px;padding:14px;font-weight:600;color:var(--c-text);box-shadow:var(--shadow-sm);}
.course-features .tick{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;background:var(--c-green);color:#fff;font-size:.78rem;flex:0 0 22px;}

/* Material cards */
.material-card{display:flex;align-items:center;gap:14px;background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-sm);text-decoration:none;color:inherit;transition:transform .18s ease, box-shadow .18s ease;}
.material-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);text-decoration:none;}
.material-card__icon{width:50px;height:50px;border-radius:12px;background:var(--c-sky);display:inline-flex;align-items:center;justify-content:center;font-size:1.4rem;flex:0 0 50px;}
.material-card__body{display:flex;flex-direction:column;flex:1;}
.material-card__title{font-weight:700;color:var(--c-navy);}
.material-card__desc{font-size:.88rem;color:var(--c-text-soft);}
.material-card__arrow{color:var(--c-primary);font-weight:800;}

/* Post cards */
.post-card{background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;transition:transform .18s ease, box-shadow .18s ease;}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.post-card__media{display:block;aspect-ratio:16/9;background:var(--c-sky);overflow:hidden;}
.post-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.post-card:hover .post-card__media img{transform:scale(1.05);}
.post-card__placeholder{display:flex;align-items:center;justify-content:center;height:100%;font-weight:800;color:var(--c-primary);letter-spacing:.1em;font-size:1.3rem;}
.post-card__body{padding:18px;display:flex;flex-direction:column;flex:1;}
.post-card__cat{align-self:flex-start;background:var(--c-sky);color:var(--c-primary);font-size:.74rem;font-weight:700;padding:4px 10px;border-radius:999px;text-decoration:none;margin-bottom:10px;}
.post-card__title{font-size:1.1rem;font-weight:700;margin:0 0 8px;line-height:1.3;}
.post-card__title a{color:var(--c-navy);text-decoration:none;}
.post-card__title a:hover{color:var(--c-primary);}
.post-card__meta{font-size:.82rem;color:var(--c-text-soft);margin:0 0 10px;}
.post-card__excerpt{color:var(--c-text-soft);font-size:.92rem;margin:0 0 14px;flex:1;}
.post-card__link{font-weight:700;color:var(--c-primary);text-decoration:none;align-self:flex-start;}
.post-card__link:hover{text-decoration:underline;}
.empty-note{text-align:center;color:var(--c-text-soft);}

/* Free resources */
.free-resources{background:linear-gradient(135deg,var(--c-primary),#1665e0 60%,#0a3f8f);color:#fff;padding:72px 0;}
.free-card{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);border-radius:var(--radius);padding:28px 18px;color:#fff;text-decoration:none;transition:background .18s ease, transform .18s ease;}
.free-card:hover{background:rgba(255,255,255,.18);transform:translateY(-4px);text-decoration:none;color:#fff;}
.free-card__icon{font-size:1.8rem;}
.free-card__title{font-weight:700;}

/* YouTube */
.youtube-section__inner{display:grid;grid-template-columns:1fr 1.1fr;gap:44px;align-items:center;}
.video-frame{position:relative;width:100%;aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:#000;}
.video-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0;}
.video-frame--placeholder{display:flex;align-items:center;justify-content:center;background:var(--c-navy);color:#cdd9ef;text-align:center;padding:24px;font-size:.95rem;}

/* Testimonials */
.testimonial{background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);margin:0;}
.testimonial__stars{color:var(--c-yellow);letter-spacing:2px;margin-bottom:12px;}
.testimonial__quote{font-size:1.05rem;color:var(--c-text);margin:0 0 16px;line-height:1.6;}
.testimonial__author{font-weight:700;color:var(--c-navy);font-size:.92rem;}

/* Final CTA */
.final-cta{background:var(--c-navy);color:#fff;padding:78px 0;text-align:center;}
.final-cta__title{color:#fff;font-size:clamp(1.7rem,1.2rem + 1.8vw,2.5rem);font-weight:800;}
.final-cta__text{color:#cdd9ef;max-width:640px;margin:0 auto 28px;font-size:1.05rem;}
.final-cta__buttons{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* ---------- Page header / breadcrumb ---------- */
.page-header{background:linear-gradient(135deg,var(--c-navy),#0c2a5e);color:#fff;padding:44px 0;}
.page-header__title{color:#fff;font-size:clamp(1.5rem,1.1rem + 1.4vw,2.2rem);margin:0 0 10px;}
.breadcrumb{font-size:.88rem;color:#bcd0f0;}
.breadcrumb a{color:#e7eefb;text-decoration:none;}
.breadcrumb a:hover{text-decoration:underline;}
.breadcrumb .sep{margin:0 8px;color:#7f9ccb;}
.breadcrumb .current{color:#fff;}

/* ---------- Blog layout ---------- */
.layout{display:grid;grid-template-columns:1fr;gap:40px;padding-top:48px;padding-bottom:64px;}
body.has-sidebar .layout,
.layout--single{grid-template-columns:minmax(0,1fr) 320px;}
.layout__main{min-width:0;}
.layout__sidebar{min-width:0;}

/* Pagination */
.pagination-wrap{margin-top:40px;}
.pagination .nav-links{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;}
.pagination .page-numbers{display:inline-flex;align-items:center;justify-content:center;min-width:42px;height:42px;padding:0 12px;border:1px solid var(--c-border);border-radius:10px;background:#fff;color:var(--c-text);font-weight:600;text-decoration:none;}
.pagination .page-numbers:hover{background:var(--c-sky);}
.pagination .page-numbers.current{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}

/* Empty state */
.empty-state{text-align:center;background:#fff;border:1px solid var(--c-border);border-radius:var(--radius);padding:48px 24px;}
.empty-state h2{margin-top:0;}

/* ---------- Single post ---------- */
.single-post{background:#fff;border:1px solid var(--c-border);border-radius:var(--radius-lg);padding:36px;box-shadow:var(--shadow-sm);}
.single-post__meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;color:var(--c-text-soft);font-size:.9rem;margin-bottom:18px;}
.single-post__meta .dot{color:#cbd5e1;}
.chip{background:var(--c-sky);color:var(--c-primary);font-weight:700;font-size:.8rem;padding:4px 11px;border-radius:999px;text-decoration:none;}
.single-post__cover{margin:0 0 24px;border-radius:var(--radius);overflow:hidden;}
.single-post__cover img{width:100%;}

/* Tags */
.single-post__tags{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:28px;}
.tags-label{font-weight:700;color:var(--c-navy);}
.tag-pill{background:var(--c-bg);border:1px solid var(--c-border);color:var(--c-text-soft);font-size:.82rem;padding:5px 11px;border-radius:999px;text-decoration:none;}
.tag-pill:hover{background:var(--c-sky);color:var(--c-primary);}

/* Share */
.share-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:24px;padding-top:20px;border-top:1px solid var(--c-border);}
.share-bar__label{font-weight:700;color:var(--c-navy);}
.share-btn{font-size:.84rem;font-weight:700;padding:8px 14px;border-radius:10px;color:#fff;text-decoration:none;}
.share-btn--wa{background:#25D366;}
.share-btn--fb{background:#1877F2;}
.share-btn--tw{background:#111;}
.share-btn--tg{background:#229ED9;}
.share-btn:hover{opacity:.9;text-decoration:none;color:#fff;}

/* WhatsApp CTA box */
.wa-cta{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;margin-top:30px;background:var(--c-sky);border:1px solid rgba(11,94,215,.18);border-radius:var(--radius);padding:24px;}
.wa-cta__text h3{margin:0 0 4px;color:var(--c-navy);}
.wa-cta__text p{margin:0;color:var(--c-text-soft);}

/* Prev / next */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:30px;}
.post-nav a{display:flex;flex-direction:column;gap:4px;background:#fff;border:1px solid var(--c-border);border-radius:12px;padding:16px;text-decoration:none;color:var(--c-text);box-shadow:var(--shadow-sm);}
.post-nav a:hover{border-color:var(--c-primary);}
.post-nav__next{text-align:right;}
.post-nav__dir{font-size:.8rem;color:var(--c-primary);font-weight:700;}
.post-nav__title{font-weight:700;color:var(--c-navy);}

/* Related */
.related{margin-top:48px;}
.related__title{font-size:1.5rem;margin-bottom:20px;}

/* ---------- Prose / study-note typography ---------- */
.prose{color:var(--c-text);font-size:1.04rem;line-height:1.8;}
.prose > *:first-child{margin-top:0;}
.prose h2{font-size:1.6rem;margin:1.6em 0 .6em;}
.prose h3{font-size:1.3rem;margin:1.4em 0 .5em;}
.prose h4{font-size:1.1rem;margin:1.3em 0 .5em;}
.prose p{margin:0 0 1.1em;}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.4em;}
.prose li{margin-bottom:.5em;}
.prose a{color:var(--c-primary);text-decoration:underline;}
.prose img{border-radius:var(--radius);margin:1.2em 0;}
.prose blockquote{margin:1.4em 0;padding:16px 22px;border-left:5px solid var(--c-primary);background:var(--c-sky);border-radius:0 12px 12px 0;color:var(--c-navy);font-style:italic;}
.prose code{background:#f1f5f9;padding:2px 7px;border-radius:6px;font-size:.9em;}
.prose pre{background:var(--c-navy);color:#e2e8f0;padding:18px;border-radius:12px;overflow:auto;margin:1.4em 0;}
.prose pre code{background:transparent;padding:0;color:inherit;}
.prose table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:.96rem;box-shadow:var(--shadow-sm);border-radius:10px;overflow:hidden;}
.prose th,.prose td{border:1px solid var(--c-border);padding:11px 14px;text-align:left;}
.prose thead th{background:var(--c-navy);color:#fff;font-weight:700;}
.prose tbody tr:nth-child(even){background:var(--c-bg);}
.prose hr{border:0;border-top:1px solid var(--c-border);margin:2em 0;}

/* ---------- Study note helper boxes ---------- */
.download-btn{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--c-primary);color:#fff;font-weight:700;
  padding:13px 22px;border-radius:12px;text-decoration:none;
  box-shadow:0 8px 18px rgba(11,94,215,.28);transition:transform .15s ease, background .15s ease;
  border:2px solid transparent;margin:1em 0;
}
.download-btn::before{content:"⬇";display:inline-block;background:var(--c-yellow);color:#3b2f00;width:26px;height:26px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;font-size:.95rem;}
.download-btn:hover{background:var(--c-primary-dark);transform:translateY(-2px);color:#fff;text-decoration:none;}

.note-box,.exam-tip,.important-box,.warning-box,.practice-box{
  border-radius:12px;padding:18px 20px;margin:1.4em 0;border:1px solid;border-left-width:5px;
}
.note-box{background:var(--c-sky);border-color:rgba(11,94,215,.25);border-left-color:var(--c-primary);}
.exam-tip{background:#fff8e1;border-color:rgba(224,168,0,.35);border-left-color:var(--c-yellow-dark);}
.important-box{background:#ecfdf3;border-color:rgba(22,163,74,.3);border-left-color:var(--c-green);}
.warning-box{background:#fef2f2;border-color:rgba(220,38,38,.3);border-left-color:#dc2626;}
.practice-box{background:#f5f3ff;border-color:rgba(124,58,237,.3);border-left-color:#7c3aed;}
.note-box::before,.exam-tip::before,.important-box::before,.warning-box::before,.practice-box::before{
  display:block;font-weight:800;margin-bottom:6px;text-transform:uppercase;font-size:.78rem;letter-spacing:.04em;
}
.note-box::before{content:"📘 Note";color:var(--c-primary);}
.exam-tip::before{content:"💡 Exam Tip";color:var(--c-yellow-dark);}
.important-box::before{content:"✅ Important";color:var(--c-green);}
.warning-box::before{content:"⚠️ Warning";color:#dc2626;}
.practice-box::before{content:"📝 Practice";color:#7c3aed;}

/* ---------- Widgets / sidebar ---------- */
.widget{background:#fff;border:1px solid var(--c-border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);margin-bottom:24px;}
.widget-title{font-size:1.05rem;margin:0 0 14px;color:var(--c-navy);position:relative;padding-bottom:10px;}
.widget-title::after{content:"";position:absolute;left:0;bottom:0;width:42px;height:3px;background:var(--c-yellow);border-radius:3px;}
.widget ul{list-style:none;margin:0;padding:0;}
.widget ul li{padding:8px 0;border-bottom:1px dashed var(--c-border);}
.widget ul li:last-child{border-bottom:0;}
.widget a{color:var(--c-text);text-decoration:none;font-weight:500;}
.widget a:hover{color:var(--c-primary);}
.widget-cta{color:#fff;border:0;}
.widget-cta .widget-title{color:#fff;}
.widget-cta .widget-title::after{background:#fff;}
.widget-cta p{margin:0 0 14px;}
.widget-cta--notes{background:linear-gradient(135deg,var(--c-primary),#0a3f8f);}
.widget-cta--wa{background:linear-gradient(135deg,#0f9d58,#0b7a43);}

/* Search form */
.search-form{display:flex;gap:8px;}
.search-form__input{flex:1;border:1px solid var(--c-border);border-radius:10px;padding:12px 14px;font-size:.96rem;background:#fff;}
.search-form__btn{background:var(--c-primary);color:#fff;border:0;border-radius:10px;padding:0 18px;font-weight:700;cursor:pointer;}
.search-form__btn:hover{background:var(--c-primary-dark);}

/* ---------- Page article ---------- */
.page-article{padding:48px 0 0;}
.page-article__media{margin-bottom:24px;border-radius:var(--radius);overflow:hidden;}
.archive-desc{margin-bottom:28px;}
.search-count{color:var(--c-text-soft);margin-bottom:20px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-navy);color:#c4d2ea;margin-top:0;}
.site-footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1.2fr;gap:40px;padding:60px 20px;}
.footer-col--widgets{grid-column:1 / -1;}
.footer-heading{color:#fff;font-size:1.1rem;margin:0 0 14px;}
.footer-about{font-size:.95rem;line-height:1.7;margin:0 0 16px;}
.footer-social{display:flex;flex-wrap:wrap;gap:12px;}
.footer-social a{color:#dbe6f8;font-weight:600;text-decoration:none;font-size:.9rem;border:1px solid rgba(255,255,255,.18);padding:6px 12px;border-radius:8px;}
.footer-social a:hover{background:rgba(255,255,255,.10);color:#fff;}
.footer-menu,.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{padding:6px 0;}
.footer-col a{color:#c4d2ea;text-decoration:none;}
.footer-col a:hover{color:#fff;text-decoration:underline;}
.footer-contact li{padding:6px 0;font-size:.94rem;}
.footer-contact strong{color:#fff;}
.site-footer__bar{border-top:1px solid rgba(255,255,255,.12);}
.site-footer__bar .container{padding-top:18px;padding-bottom:18px;}
.site-footer__bar p{margin:0;font-size:.86rem;color:#9fb2d4;text-align:center;}

/* ---------- Floating WhatsApp + to-top ---------- */
.float-wa{position:fixed;right:20px;bottom:20px;z-index:950;display:inline-flex;align-items:center;gap:10px;background:#25D366;color:#fff;font-weight:700;padding:13px 18px;border-radius:999px;box-shadow:0 10px 24px rgba(37,211,102,.4);text-decoration:none;transition:transform .15s ease;}
.float-wa:hover{transform:translateY(-3px);color:#fff;text-decoration:none;}
.float-wa__icon{font-size:1.2rem;}
.to-top{position:fixed;right:20px;bottom:84px;z-index:940;width:44px;height:44px;border-radius:50%;border:0;background:var(--c-navy);color:#fff;font-size:1.1rem;cursor:pointer;box-shadow:var(--shadow);opacity:.92;}
.to-top:hover{background:var(--c-primary);}
.to-top[hidden]{display:none;}

/* ---------- 404 ---------- */
.error-404{padding:80px 0;text-align:center;}
.error-404__code{font-size:5rem;font-weight:800;color:var(--c-primary);line-height:1;}
.error-404__title{font-size:1.8rem;margin:8px 0 12px;}
.error-404__text{color:var(--c-text-soft);max-width:560px;margin:0 auto 24px;}
.error-404__search{max-width:480px;margin:0 auto 24px;}
.error-404__links{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:36px;}
.error-404__popular ul{list-style:none;display:flex;flex-wrap:wrap;gap:10px;justify-content:center;padding:0;}
.error-404__popular a{background:#fff;border:1px solid var(--c-border);border-radius:999px;padding:8px 16px;text-decoration:none;color:var(--c-text);}
.error-404__popular a:hover{background:var(--c-sky);color:var(--c-primary);}

/* ---------- Comments (light) ---------- */
.comments-area{background:#fff;border:1px solid var(--c-border);border-radius:var(--radius);padding:28px;margin-top:30px;box-shadow:var(--shadow-sm);}
.comment-list{list-style:none;padding:0;}
.comment-body{padding:14px 0;border-bottom:1px solid var(--c-border);}
.comment-form input[type=text],.comment-form input[type=email],.comment-form input[type=url],.comment-form textarea{width:100%;border:1px solid var(--c-border);border-radius:10px;padding:12px;margin-bottom:12px;font-family:inherit;}
.comment-form .submit{background:var(--c-primary);color:#fff;border:0;border-radius:999px;padding:12px 24px;font-weight:700;cursor:pointer;}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}

/* ---------- Free PDF Notes library ---------- */
.pdf-library-wrap{padding:40px 0 64px;}
.pdf-intro{margin-bottom:28px;}
.pdf-toolbar{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;margin-bottom:14px;}
.pdf-search{flex:1;min-width:220px;border:1px solid var(--c-border);border-radius:12px;padding:12px 16px;font-size:.96rem;background:#fff;}
.pdf-filters{display:flex;flex-wrap:wrap;gap:8px;}
.pdf-filter{border:1px solid var(--c-border);background:#fff;color:var(--c-text);font-weight:600;font-size:.86rem;padding:9px 14px;border-radius:999px;cursor:pointer;transition:background .15s ease,color .15s ease,border-color .15s ease;}
.pdf-filter:hover{background:var(--c-sky);}
.pdf-filter.is-active{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
.pdf-count{color:var(--c-text-soft);font-size:.9rem;margin:0 0 18px;}
.pdf-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.pdf-item{display:flex;align-items:center;gap:16px;background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-sm);transition:transform .15s ease,box-shadow .15s ease;}
.pdf-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);}
.pdf-item__icon{flex:0 0 54px;width:54px;height:64px;border-radius:10px;background:linear-gradient(160deg,#fee2e2,#fecaca);color:#b91c1c;font-weight:800;font-size:.8rem;display:flex;align-items:center;justify-content:center;letter-spacing:.04em;position:relative;}
.pdf-item__icon::after{content:"";position:absolute;top:0;right:0;border-width:0 14px 14px 0;border-style:solid;border-color:#fff #fff transparent transparent;border-top-right-radius:10px;}
.pdf-item__body{flex:1;min-width:0;}
.pdf-item__cat{display:inline-block;background:var(--c-sky);color:var(--c-primary);font-size:.72rem;font-weight:700;padding:3px 9px;border-radius:999px;text-decoration:none;margin-bottom:6px;}
.pdf-item__title{font-size:1.02rem;font-weight:700;margin:0 0 4px;color:var(--c-navy);line-height:1.3;}
.pdf-item__info{font-size:.82rem;color:var(--c-text-soft);margin:0;}
.pdf-item__btn{margin:0;flex:0 0 auto;padding:10px 16px;font-size:.86rem;}
.pdf-noresults{text-align:center;color:var(--c-text-soft);background:#fff;border:1px dashed var(--c-border);border-radius:var(--radius);padding:30px;}