/* =========================================================================
   AICERTs LMS - Frontend Stylesheet
   Colors/Typography/Spacing are dynamically injected from Theme Builder.
   See: helpers/theme_helpers.php → render_theme_css()
   All CSS vars are defined in <style id="theme-css"> in <head>.
   ========================================================================= */

/* Fallback :root values — overridden by theme_helpers.php at runtime */
:root {
  --gold:       var(--primary,       #c79a3d);
  --gold-dark:  var(--primary-dark,  #a07a26);
  --gold-light: var(--primary-light, #e6c478);
  --dark:       var(--secondary,     #181818);
  --dark-2:     var(--secondary-2,   #2a2a2a);
  --cream:      var(--bg,            #fcfaf5);
  --beige:      var(--bg-alt,        #f5efe1);
  --muted:      var(--text-muted,    #6b6b6b);
  --border:     var(--border,        #e6e0d2);
  --success:    var(--success,       #1e7e34);
  --danger:     var(--danger,        #b02a37);
  --shadow:     var(--shadow,        0 4px 24px rgba(0,0,0,.06));
  --shadow-lg:  var(--shadow-lg,     0 12px 40px rgba(0,0,0,.10));
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { font-family: 'Inter', system-ui, sans-serif; color: var(--text); background: var(--cream); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; transition: all .2s; }
a:hover { color: var(--gold); }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ------------ Header ------------ */
.site-header { background: #fff; border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; box-shadow: 0 2px 10px rgba(0,0,0,.03); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 18px 24px; gap: 30px; }
.site-logo { display: flex; align-items: baseline; font-weight: 800; font-size: 22px; color: var(--dark); letter-spacing: -.5px; }
.site-logo .logo-mark { background: var(--gold); color: #fff; padding: 4px 8px; border-radius: 4px; margin-right: 4px; font-size: 18px; }
.site-logo sup { font-size: 10px; }
.main-nav { display: flex; gap: 30px; align-items: center; flex: 1; justify-content: center; }
.main-nav > a, .main-nav .dropdown-trigger { font-weight: 500; font-size: 15px; color: #333; padding: 6px 0; position: relative; }
.main-nav > a:hover, .main-nav .dropdown-trigger:hover { color: var(--gold); }
.main-nav > a.active::after { content: ""; position: absolute; bottom: -3px; left: 0; right: 0; height: 2px; background: var(--gold); }
.nav-dropdown { position: relative; }
.dropdown-menu { position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(10px); background: #fff; min-width: 240px; padding: 12px; border-radius: 10px; box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transition: all .2s; border: 1px solid var(--border); }
.nav-dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.dropdown-menu a { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 6px; font-size: 14px; font-weight: 500; }
.dropdown-menu a:hover { background: var(--beige); }
.dropdown-menu a i { width: 20px; }
.header-cta { display: flex; gap: 12px; }
.mobile-menu-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; }

/* ------------ Buttons ------------ */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 22px; border-radius: 6px; font-weight: 600; font-size: 14px; cursor: pointer; border: 2px solid transparent; transition: all .2s; }
.btn-primary { background: var(--gold); color: #fff; }
.btn-primary:hover { background: var(--gold-dark); color: #fff; }
.btn-outline { background: transparent; color: var(--dark); border-color: var(--dark); }
.btn-outline:hover { background: var(--dark); color: #fff; }
.btn-dark { background: var(--dark); color: #fff; }
.btn-dark:hover { background: var(--gold); }
.btn-lg { padding: 14px 30px; font-size: 16px; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-block { width: 100%; justify-content: center; }
.btn-danger { background: var(--danger); color: #fff; }

/* ------------ Hero ------------ */
.hero { background: linear-gradient(135deg, #181818 0%, #2a2a2a 100%); color: #fff; padding: 90px 0 100px; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(circle at 20% 30%, rgba(199,154,61,.15), transparent 50%), radial-gradient(circle at 80% 70%, rgba(199,154,61,.10), transparent 50%); pointer-events: none; }
.hero-inner { position: relative; z-index: 2; max-width: 760px; }
.hero h1 { font-size: clamp(34px, 5vw, 56px); font-weight: 800; line-height: 1.1; margin-bottom: 20px; }
.hero h1 span { color: var(--gold); }
.hero p { font-size: 18px; opacity: .85; margin-bottom: 30px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 30px; margin-top: 60px; padding-top: 40px; border-top: 1px solid rgba(255,255,255,.15); position: relative; z-index: 2; }
.hero-stat .num { font-size: 36px; font-weight: 800; color: var(--gold); display: block; }
.hero-stat .label { font-size: 13px; opacity: .8; text-transform: uppercase; letter-spacing: 1px; }

/* ------------ Sections ------------ */
.section { padding: 80px 0; }
.section-head { text-align: center; max-width: 700px; margin: 0 auto 50px; }
.section-head .eyebrow { color: var(--gold); font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: 2px; margin-bottom: 12px; display: block; }
.section-head h2 { font-size: 38px; font-weight: 800; color: var(--dark); margin-bottom: 14px; line-height: 1.2; }
.section-head p { color: var(--muted); font-size: 17px; }

/* ------------ Course Cards ------------ */
.course-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 28px; }
.course-card { background: #fff; border: 1px solid var(--border); border-radius: 14px; overflow: hidden; transition: all .3s; box-shadow: var(--shadow); display: flex; flex-direction: column; }
.course-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--gold); }
.course-card-image { background: linear-gradient(135deg, #f5efe1, #fff); aspect-ratio: 1; display: flex; align-items: center; justify-content: center; padding: 30px; position: relative; }
.course-card-image img { max-height: 100%; object-fit: contain; }
.course-card-badge { position: absolute; top: 14px; right: 14px; background: var(--gold); color: #fff; padding: 4px 10px; border-radius: 20px; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .5px; }
.course-card-body { padding: 22px 22px 24px; flex: 1; display: flex; flex-direction: column; }
.course-card-cat { font-size: 11px; font-weight: 700; color: var(--gold); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 8px; }
.course-card-title { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 12px; line-height: 1.35; min-height: 46px; }
.course-card-desc { color: var(--muted); font-size: 13px; margin-bottom: 20px; flex: 1; }
.course-card-footer { display: flex; align-items: center; justify-content: space-between; padding-top: 14px; border-top: 1px solid var(--border); }
.course-card-price { font-size: 20px; font-weight: 800; color: var(--dark); }
.course-card-link { color: var(--gold); font-weight: 600; font-size: 13px; }
.course-card-link i { transition: transform .2s; }
.course-card:hover .course-card-link i { transform: translateX(4px); }

/* ------------ Categories Section ------------ */
.cat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 22px; }
.cat-card { background: #fff; padding: 30px 24px; border-radius: 14px; text-align: center; border: 2px solid var(--border); transition: all .3s; cursor: pointer; }
.cat-card:hover { border-color: var(--gold); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.cat-icon { width: 64px; height: 64px; margin: 0 auto 16px; background: var(--beige); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 26px; color: var(--gold); }
.cat-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; color: var(--dark); }
.cat-card .count { color: var(--muted); font-size: 13px; }

/* ------------ Course Detail Pages (Different per category) ------------ */
/* === Default Detail === */
.course-detail-hero { background: linear-gradient(135deg, #fffaee, #f5efe1); padding: 60px 0 80px; border-bottom: 1px solid var(--border); }
.course-detail-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 60px; align-items: center; }
.course-detail-title { font-size: clamp(28px, 4vw, 44px); font-weight: 800; line-height: 1.15; color: var(--dark); margin: 14px 0 16px; }
.course-detail-tagline { font-size: 18px; color: var(--muted); margin-bottom: 26px; }
.course-meta-row { display: flex; gap: 24px; flex-wrap: wrap; margin-top: 20px; }
.course-meta-item { display: flex; align-items: center; gap: 10px; color: var(--dark); }
.course-meta-item i { color: var(--gold); }
.cert-badge-image { display: flex; align-items: center; justify-content: center; }
.cert-badge-image img { max-width: 100%; max-height: 380px; filter: drop-shadow(0 12px 30px rgba(0,0,0,.12)); }
.breadcrumb { display: flex; gap: 8px; font-size: 13px; color: var(--muted); margin-bottom: 16px; }
.breadcrumb a:hover { color: var(--gold); }

/* === Modules === */
.modules-section { padding: 70px 0; background: #fff; }
.modules-list { max-width: 900px; margin: 0 auto; }
.module-item { background: #fff; border: 1px solid var(--border); border-radius: 12px; margin-bottom: 14px; overflow: hidden; transition: all .2s; }
.module-item:hover { border-color: var(--gold); box-shadow: var(--shadow); }
.module-head { padding: 18px 24px; display: flex; align-items: center; justify-content: space-between; cursor: pointer; gap: 14px; }
.module-head h3 { font-size: 16px; font-weight: 700; color: var(--dark); flex: 1; }
.module-num { width: 36px; height: 36px; background: var(--beige); color: var(--gold); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 13px; }
.module-toggle { color: var(--muted); transition: transform .2s; }
.module-item.open .module-toggle { transform: rotate(180deg); }
.module-body { display: none; padding: 4px 24px 22px 76px; color: var(--muted); font-size: 14px; line-height: 1.7; }
.module-item.open .module-body { display: block; }
.module-body ol { padding-left: 18px; }
.module-body ol li { margin-bottom: 6px; }

/* === Why Matters === */
.why-section { background: var(--dark); color: #fff; padding: 70px 0; }
.why-section .section-head h2 { color: #fff; }
.why-section .section-head p { color: rgba(255,255,255,.7); }
.why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.why-card { background: rgba(255,255,255,.05); padding: 28px 24px; border-radius: 14px; border: 1px solid rgba(255,255,255,.1); transition: all .3s; }
.why-card:hover { background: rgba(199,154,61,.1); border-color: var(--gold); }
.why-card .icon { width: 50px; height: 50px; background: var(--gold); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 22px; color: #fff; margin-bottom: 16px; }
.why-card h4 { color: var(--gold); font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.why-card p { font-size: 14px; color: rgba(255,255,255,.75); }

/* === Enrollment Sidebar === */
.enrollment-cta { background: #fff; padding: 30px 26px; border-radius: 16px; box-shadow: var(--shadow-lg); border: 2px solid var(--gold); position: sticky; top: 100px; }
.enrollment-cta .price { font-size: 42px; font-weight: 800; color: var(--dark); margin-bottom: 4px; }
.enrollment-cta .price-label { color: var(--muted); font-size: 13px; margin-bottom: 22px; }
.enrollment-cta .included { padding: 18px 0; border-top: 1px solid var(--border); }
.enrollment-cta .included li { display: flex; align-items: flex-start; gap: 10px; padding: 6px 0; font-size: 14px; color: #444; }
.enrollment-cta .included li i { color: var(--success); margin-top: 4px; flex-shrink: 0; }

/* === Cert Overview Section === */
.overview-section { padding: 70px 0; background: var(--beige); }
.overview-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; }
.overview-card { background: #fff; padding: 26px 22px; border-radius: 14px; border-top: 4px solid var(--gold); }
.overview-card .icon { color: var(--gold); font-size: 28px; margin-bottom: 12px; }
.overview-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 10px; color: var(--dark); text-transform: uppercase; letter-spacing: .5px; }
.overview-card p, .overview-card ul, .overview-card li { font-size: 13.5px; color: #555; line-height: 1.6; }
.overview-card ul { padding-left: 16px; }

/* === Business Variant === */
.detail-business .course-detail-hero { background: linear-gradient(120deg, #1a2842 0%, #2d4263 60%, #c79a3d 130%); color: #fff; }
.detail-business .course-detail-title { color: #fff; }
.detail-business .course-detail-tagline { color: rgba(255,255,255,.85); }
.detail-business .breadcrumb { color: rgba(255,255,255,.7); }
.detail-business .course-meta-item { color: #fff; }
.detail-business .course-detail-hero .badge-mini { display: inline-block; background: var(--gold); color: #fff; padding: 4px 14px; border-radius: 30px; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; }

/* === Technology Variant === */
.detail-technology .course-detail-hero { background: radial-gradient(ellipse at top right, #0d2e4f 0%, #07111e 60%); color: #fff; position: relative; overflow: hidden; }
.detail-technology .course-detail-hero::before { content: ""; position: absolute; inset: 0; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 40 40'%3E%3Cpath d='M20 .5 L39.5 20 L20 39.5 L.5 20 Z' fill='none' stroke='%2300d4ff10' stroke-width='1'/%3E%3C/svg%3E"); opacity: .4; }
.detail-technology .course-detail-title { color: #fff; }
.detail-technology .course-detail-tagline { color: #8fd5ff; }
.detail-technology .breadcrumb { color: rgba(255,255,255,.6); }
.detail-technology .course-meta-item { color: #fff; }
.detail-technology .course-meta-item i { color: #00d4ff; }

/* === Healthcare Variant === */
.detail-healthcare .course-detail-hero { background: linear-gradient(135deg, #fff0f3 0%, #ffe0e9 50%, #ffd6e0 100%); }
.detail-healthcare .course-meta-item i { color: #c73d6a; }
.detail-healthcare .enrollment-cta { border-color: #c73d6a; }

/* ------------ Pagination ------------ */
.pagination { display: flex; justify-content: center; gap: 8px; margin: 40px 0; }
.pagination a, .pagination span { padding: 10px 16px; border-radius: 6px; border: 1px solid var(--border); background: #fff; font-weight: 600; }
.pagination .current { background: var(--gold); color: #fff; border-color: var(--gold); }
.pagination a:hover { border-color: var(--gold); color: var(--gold); }

/* ------------ Filters Bar ------------ */
.filters-bar { background: #fff; padding: 20px 24px; border-radius: 12px; margin-bottom: 30px; display: flex; gap: 16px; align-items: center; flex-wrap: wrap; box-shadow: var(--shadow); }
.filters-bar form { display: flex; gap: 12px; flex: 1; flex-wrap: wrap; }
.filters-bar input, .filters-bar select { padding: 10px 14px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; font-family: inherit; }
.filters-bar input { flex: 1; min-width: 200px; }

/* ------------ Footer ------------ */
.site-footer { background: var(--dark); color: rgba(255,255,255,.85); padding: 70px 0 0; margin-top: 80px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 50px; padding-bottom: 50px; }
.footer-col h4 { color: var(--gold); font-size: 14px; text-transform: uppercase; letter-spacing: 2px; margin-bottom: 18px; }
.footer-col p { color: rgba(255,255,255,.7); font-size: 14px; margin-bottom: 12px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: rgba(255,255,255,.7); font-size: 14px; }
.footer-col ul a:hover { color: var(--gold); }
.footer-logo { display: flex; align-items: baseline; font-weight: 800; font-size: 22px; color: #fff; margin-bottom: 16px; }
.footer-logo .logo-mark { background: var(--gold); color: #fff; padding: 4px 8px; border-radius: 4px; margin-right: 4px; }
.muted { color: rgba(255,255,255,.7); font-size: 14px; }
.social-links { display: flex; gap: 14px; margin-top: 20px; }
.social-links a { width: 38px; height: 38px; background: rgba(255,255,255,.08); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; }
.social-links a:hover { background: var(--gold); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 22px 0; text-align: center; }
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,.55); }

/* ------------ Misc ------------ */
.flash { font-size: 14px; font-weight: 500; max-width: 1200px; margin: 16px auto !important; }
.empty-state { text-align: center; padding: 80px 20px; color: var(--muted); }
.empty-state i { font-size: 64px; color: var(--border); margin-bottom: 20px; }
.empty-state h3 { font-size: 22px; color: var(--dark); margin-bottom: 8px; }

/* ------------ Responsive ------------ */
@media (max-width: 980px) {
  .hero-stats { grid-template-columns: repeat(2,1fr); }
  .course-detail-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .main-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff; flex-direction: column; padding: 20px; gap: 0; border-bottom: 1px solid var(--border); }
  .main-nav.open { display: flex; }
  .main-nav > a { padding: 14px 0; width: 100%; border-bottom: 1px solid var(--border); }
  .mobile-menu-toggle { display: block; }
}
/* ------------ Dynamic Header / Mega Menu ------------ */
.main-nav { gap: 18px; }
.nav-menu-list, .nav-submenu { list-style: none; margin: 0; padding: 0; }
.nav-menu-list.depth-1 { display: flex; align-items: center; gap: 22px; }
.nav-item { position: relative; }
.nav-link { display: inline-flex; align-items: center; gap: 8px; font-weight: 500; font-size: 15px; color: #333; padding: 10px 0; }
.nav-item.active > .nav-link { color: var(--gold); }
.nav-item.active > .nav-link::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--gold); }
.nav-caret { font-size: 11px; transition: transform .2s; }
.nav-item:hover > .nav-link .nav-caret { transform: rotate(180deg); }
.nav-submenu { position: absolute; top: calc(100% + 12px); left: 0; min-width: 240px; background: #fff; padding: 10px; border-radius: 12px; border: 1px solid var(--border); box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transform: translateY(8px); transition: all .2s; z-index: 99; }
.nav-submenu .nav-item { width: 100%; }
.nav-submenu .nav-link { width: 100%; justify-content: space-between; padding: 10px 12px; border-radius: 8px; }
.nav-submenu .nav-link:hover { background: var(--beige); }
.nav-submenu .nav-submenu { top: 0; left: calc(100% + 10px); }
.nav-item:hover > .nav-submenu,
.nav-item:hover > .mega-menu-panel { opacity: 1; visibility: visible; transform: translateY(0); }
.mega-menu-panel { position: absolute; top: calc(100% + 12px); left: 50%; transform: translateX(-50%) translateY(8px); width: min(960px, 92vw); background: #fff; border: 1px solid var(--border); border-radius: 18px; box-shadow: var(--shadow-lg); padding: 20px; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; opacity: 0; visibility: hidden; transition: all .2s; z-index: 99; }
.mega-menu-column { background: #faf8f2; border: 1px solid #f0e8d9; border-radius: 12px; padding: 14px; }
.mega-menu-heading { display: inline-block; font-weight: 700; margin-bottom: 6px; color: var(--dark); }
.mega-menu-copy { color: var(--muted); font-size: 13px; margin-bottom: 10px; }
.mega-menu-column .nav-submenu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; background: transparent; padding: 0; min-width: auto; }
.mega-menu-column .nav-link { padding: 8px 0; font-size: 14px; }
.mega-menu-column .nav-submenu .nav-submenu { padding-left: 14px; }
.header-search { display: flex; align-items: center; gap: 10px; border: 1px solid var(--border); border-radius: 999px; padding: 8px 10px 8px 14px; background: #fff; min-width: 280px; }
.header-search i { color: var(--gold); }
.header-search input { border: 0; outline: none; font-size: 14px; background: transparent; min-width: 0; width: 100%; font-family: inherit; }
.header-search button { border: 0; background: var(--gold); color: #fff; border-radius: 999px; padding: 8px 14px; font-weight: 600; cursor: pointer; }
.header-search button:hover { background: var(--gold-dark); }
.footer-brand-col { max-width: 340px; }
.footer-col p a { color: rgba(255,255,255,.75); }
.footer-col p a:hover { color: var(--gold); }
.pagination { flex-wrap: wrap; }

@media (max-width: 980px) {
  .main-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch; padding: 20px; gap: 16px; border-bottom: 1px solid var(--border); }
  .main-nav.open { display: flex; }
  .nav-menu-list.depth-1 { flex-direction: column; align-items: stretch; gap: 6px; }
  .nav-link { width: 100%; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--border); }
  .nav-submenu,
  .mega-menu-panel { position: static; min-width: auto; width: 100%; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; padding: 0 0 0 14px; display: none; }
  .nav-item.submenu-open > .nav-submenu,
  .nav-item.submenu-open > .mega-menu-panel { display: block; }
  .mega-menu-column { padding: 10px 0 10px 10px; background: transparent; border: 0; border-left: 2px solid var(--border); border-radius: 0; }
  .header-search { min-width: 100%; }
}

@media (max-width: 640px) {
  .hero { padding: 60px 0 70px; }
  .section { padding: 50px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 20px; }
  .header-cta .btn-outline { display: none; }
  .header-cta .btn-primary { padding-inline: 16px; }
  .header-search { padding: 8px 8px 8px 12px; }
}
