/* ============================================================
   OXTON EDUCATION — Página de Detalhes do Curso (Premium)
   Classes: course-detail-*, course-section, etc.
============================================================ */

.course-detail-page{
  font-family:'Inter','Inter var',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  font-feature-settings:'cv02','cv03','cv04','cv11','ss01';
  -webkit-font-smoothing:antialiased;
  background:var(--ox-bg-soft,#f7f9fc);min-height:100vh;color:var(--ox-text,#0a0f1e);
}
.course-detail-page *,.course-detail-page *::before,.course-detail-page *::after{box-sizing:border-box}
.course-detail-page .container{max-width:var(--ox-container,1200px);margin:0 auto;padding:0 24px;width:100%}

/* ============================================================
   HERO — split 2 colunas (conteúdo + preview)
============================================================ */
.course-hero{
  background:linear-gradient(180deg,#fff 0%,var(--ox-bg-soft,#f7f9fc) 100%);
  border-bottom:1px solid var(--ox-border,#e2e8f0);
  padding:36px 0 48px;
}
.course-hero-layout{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:start}
.course-hero-content{min-width:0}

.course-breadcrumb{
  display:flex;align-items:center;gap:8px;color:var(--ox-muted,#64748b);font-size:.82rem;margin-bottom:18px;flex-wrap:wrap;
}
.course-breadcrumb a{color:var(--ox-muted,#64748b);text-decoration:none}
.course-breadcrumb a:hover{color:var(--ox-primary,#0030da)}
.course-breadcrumb .sep{color:var(--ox-subtle,#94a3b8)}

.course-badges{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.course-badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:5px 11px;border-radius:99px;font-size:.74rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;
}
.course-badge--category{background:var(--ox-primary-soft,#e6ebff);color:var(--ox-primary,#0030da)}
.course-badge--level{background:#fef3c7;color:#92400e}
.course-badge--level-beginner{background:#d1fae5;color:#065f46}
.course-badge--level-advanced{background:#fee2e2;color:#991b1b}
.course-badge--lang{background:#eef2f7;color:#475569}

.course-title{
  font-size:2.3rem;font-weight:700;letter-spacing:-.025em;line-height:1.15;
  color:var(--ox-text,#0a0f1e);margin:0 0 14px;
}
.course-subtitle{
  font-size:1.08rem;color:var(--ox-text-soft,#334155);line-height:1.6;
  max-width:640px;margin:0 0 24px;
}

.course-meta{
  display:flex;flex-wrap:wrap;gap:24px;padding:18px 0;border-top:1px solid var(--ox-border,#e2e8f0);border-bottom:1px solid var(--ox-border,#e2e8f0);
}
.course-meta-item{display:flex;align-items:center;gap:10px;min-width:0}
.course-meta-item .label{font-size:.7rem;color:var(--ox-subtle,#94a3b8);text-transform:uppercase;letter-spacing:.06em;font-weight:600;display:block}
.course-meta-item .value{font-size:.92rem;color:var(--ox-text,#0a0f1e);font-weight:600;display:flex;align-items:center;gap:5px}
.course-meta-item .value a{color:inherit;text-decoration:none}
.course-meta-item .value a:hover{color:var(--ox-primary,#0030da)}
.course-meta-item .rating-stars{color:#f59e0b;letter-spacing:1px;font-size:.92rem}

/* Preview card no hero */
.course-preview-card{
  position:relative;aspect-ratio:16/10;border-radius:14px;overflow:hidden;
  background:linear-gradient(135deg,#0030da,#1e3a8a);box-shadow:0 14px 36px rgba(15,23,42,.14);
  border:1px solid var(--ox-border,#e2e8f0);
}
.course-preview-card img{width:100%;height:100%;object-fit:cover;display:block}
.course-preview-card iframe{width:100%;height:100%;border:0;display:block}
.course-preview-overlay{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(180deg,rgba(10,15,30,0) 40%,rgba(10,15,30,.55) 100%);
  text-decoration:none;color:#fff;font-weight:600;font-size:.95rem;letter-spacing:.02em;
  flex-direction:column;gap:12px;
}
.course-preview-overlay:hover{text-decoration:none;color:#fff}
.course-preview-play{
  width:64px;height:64px;border-radius:50%;background:#fff;color:var(--ox-primary,#0030da);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 28px rgba(0,0,0,.25);font-size:1.4rem;padding-left:5px;
}
.course-preview-fallback{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;gap:10px;background:linear-gradient(135deg,#0030da,#1e3a8a)}
.course-preview-fallback::before{
  content:'';position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:28px 28px;
}
.course-preview-fallback svg{position:relative;z-index:1;opacity:.85}
.course-preview-fallback span{position:relative;z-index:1;font-size:.78rem;text-transform:uppercase;letter-spacing:.12em;font-weight:700;opacity:.85}

/* ============================================================
   TABS — sticky abaixo do header
============================================================ */
.course-tabs{
  position:sticky;top:68px;z-index:30;background:rgba(255,255,255,.96);backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--ox-border,#e2e8f0);
}
.course-tabs-inner{display:flex;gap:0;overflow-x:auto;scrollbar-width:none;max-width:var(--ox-container,1200px);margin:0 auto;padding:0 24px}
.course-tabs-inner::-webkit-scrollbar{display:none}
.course-tab{
  background:transparent;border:none;padding:16px 18px;cursor:pointer;font-size:.92rem;
  color:var(--ox-text-soft,#334155);font-weight:500;border-bottom:2px solid transparent;font-family:inherit;
  white-space:nowrap;display:inline-flex;align-items:center;gap:6px;text-decoration:none;
}
.course-tab:hover{color:var(--ox-text,#0a0f1e);text-decoration:none}
.course-tab.active{color:var(--ox-primary,#0030da);border-bottom-color:var(--ox-primary,#0030da);font-weight:700}
.course-tab .tab-count{font-size:.72rem;background:var(--ox-bg-muted,#f1f5f9);color:var(--ox-muted,#64748b);padding:2px 8px;border-radius:99px;font-weight:600}
.course-tab.active .tab-count{background:var(--ox-primary-soft,#e6ebff);color:var(--ox-primary,#0030da)}

/* ============================================================
   LAYOUT PRINCIPAL — main + sticky sidebar
============================================================ */
.course-detail-section{padding:32px 0 56px}
.course-detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:36px;align-items:start}
.course-detail-main{min-width:0}

/* Section cards */
.course-section{
  background:#fff;border:1px solid var(--ox-border,#e2e8f0);border-radius:14px;
  padding:28px 32px;margin-bottom:18px;
}
.course-section > h2{font-size:1.3rem;font-weight:700;letter-spacing:-.015em;color:var(--ox-text,#0a0f1e);margin:0 0 14px;line-height:1.25}
.course-section > h2 + p{color:var(--ox-muted,#64748b);font-size:.92rem;margin-top:-6px;margin-bottom:18px}

/* Learning outcomes — 2 cols */
.learning-outcomes-card .section-eyebrow{
  display:inline-block;font-size:.72rem;text-transform:uppercase;letter-spacing:.12em;
  font-weight:700;color:var(--ox-primary,#0030da);margin-bottom:8px;
}
.learning-outcomes-grid{
  list-style:none;padding:0;margin:0;
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 32px;
}
.learning-outcomes-grid li{
  display:flex;gap:11px;align-items:flex-start;font-size:.95rem;color:var(--ox-text-soft,#334155);line-height:1.5;
}
.learning-outcomes-grid li::before{
  content:'';width:22px;height:22px;border-radius:50%;background:var(--ox-success-soft,#d1fae5);
  color:var(--ox-success,#0e9f6e);font-weight:700;display:inline-flex;align-items:center;justify-content:center;
  font-size:.78rem;flex-shrink:0;margin-top:1px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%230e9f6e' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:center;
}

/* Bullet list (pré-requisitos / público) */
.requirements-list,.target-audience-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.requirements-list li,.target-audience-list li{
  position:relative;padding-left:22px;color:var(--ox-text-soft,#334155);font-size:.95rem;line-height:1.55;
}
.requirements-list li::before,.target-audience-list li::before{
  content:'';position:absolute;left:4px;top:.55em;width:6px;height:6px;border-radius:50%;background:var(--ox-primary,#0030da);
}

/* Prose */
.course-prose{font-size:1rem;color:var(--ox-text-soft,#334155);line-height:1.7;max-width:none}
.course-prose p{margin:0 0 1em}
.course-prose p:last-child{margin-bottom:0}
.course-prose strong{color:var(--ox-text,#0a0f1e)}

/* ============================================================
   CURRÍCULO (accordion premium)
============================================================ */
.curriculum-summary{
  display:flex;align-items:center;gap:20px;flex-wrap:wrap;color:var(--ox-muted,#64748b);font-size:.92rem;
  padding:14px 0;border-top:1px solid var(--ox-border,#e2e8f0);border-bottom:1px solid var(--ox-border,#e2e8f0);margin:0 0 18px;
}
.curriculum-summary strong{color:var(--ox-text,#0a0f1e);font-weight:700}
.curriculum-accordion{display:flex;flex-direction:column;gap:8px}
.curriculum-module{
  background:#fff;border:1px solid var(--ox-border,#e2e8f0);border-radius:10px;overflow:hidden;
}
.module-header{
  width:100%;display:flex;align-items:center;gap:12px;padding:14px 18px;
  background:transparent;border:none;cursor:pointer;font-family:inherit;text-align:left;
  font-weight:600;font-size:.95rem;color:var(--ox-text,#0a0f1e);transition:background .12s;
}
.module-header:hover{background:var(--ox-bg-soft,#f7f9fc)}
.module-header .toggle-ico{
  width:24px;height:24px;border-radius:50%;background:var(--ox-bg-muted,#f1f5f9);color:var(--ox-text-soft,#334155);
  display:flex;align-items:center;justify-content:center;font-size:.7rem;flex-shrink:0;transition:transform .2s;
}
.curriculum-module[open] .toggle-ico,.curriculum-module.open .toggle-ico{transform:rotate(180deg)}
.module-title{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis}
.module-meta{font-size:.78rem;color:var(--ox-muted,#64748b);font-weight:500;flex-shrink:0}

.module-lessons{list-style:none;margin:0;padding:0;background:var(--ox-bg-soft,#f7f9fc);border-top:1px solid var(--ox-border,#e2e8f0)}
.lesson-row{
  display:flex;align-items:center;gap:14px;padding:11px 18px 11px 30px;
  border-bottom:1px solid var(--ox-border,#e2e8f0);font-size:.88rem;
}
.lesson-row:last-child{border-bottom:none}
.lesson-icon{
  width:30px;height:30px;border-radius:8px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;color:#fff;
}
.lesson-icon svg{width:14px;height:14px}
.lesson-icon--video{background:var(--ox-primary,#0030da)}
.lesson-icon--text{background:#0e7490}
.lesson-icon--quiz{background:#7c3aed}
.lesson-icon--assignment{background:#0e9f6e}
.lesson-title{flex:1;min-width:0;color:var(--ox-text,#0a0f1e);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lesson-preview-tag{
  background:#fef3c7;color:#92400e;font-size:.7rem;font-weight:700;padding:2px 8px;border-radius:99px;
  text-transform:uppercase;letter-spacing:.04em;flex-shrink:0;
}
.lesson-duration{color:var(--ox-muted,#64748b);font-size:.82rem;flex-shrink:0;font-variant-numeric:tabular-nums}

/* ============================================================
   INSTRUTOR
============================================================ */
.instructor-card .instructor-profile{display:flex;gap:22px;align-items:flex-start}
.instructor-card .instructor-avatar{flex-shrink:0}
.instructor-card .instructor-info{flex:1;min-width:0}
.instructor-card h3{font-size:1.1rem;font-weight:700;margin:0 0 4px;display:flex;align-items:center;gap:6px}
.instructor-card .headline{color:var(--ox-muted,#64748b);font-size:.92rem;margin:0 0 12px}
.instructor-card .bio{color:var(--ox-text-soft,#334155);font-size:.95rem;line-height:1.6;margin:12px 0}

.coinstructors-block{margin-top:24px;padding-top:20px;border-top:1px solid var(--ox-border,#e2e8f0)}
.coinstructors-block h3{font-size:1rem;font-weight:700;margin:0 0 12px;color:var(--ox-text,#0a0f1e)}
.coinstructors-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}
.coinstructor-card{
  display:flex;align-items:center;gap:12px;padding:12px 14px;
  background:var(--ox-bg-soft,#f7f9fc);border:1px solid var(--ox-border,#e2e8f0);border-radius:10px;
}
.coinstructor-card strong{font-size:.9rem;font-weight:600;display:block}
.coinstructor-card small{color:var(--ox-muted,#64748b);font-size:.78rem}

/* ============================================================
   AVALIAÇÕES
============================================================ */
.reviews-summary{
  display:flex;align-items:center;gap:32px;padding:24px;
  background:var(--ox-bg-soft,#f7f9fc);border:1px solid var(--ox-border,#e2e8f0);border-radius:12px;margin-bottom:18px;flex-wrap:wrap;
}
.reviews-score{display:flex;flex-direction:column;gap:4px;align-items:flex-start}
.reviews-score-num{font-size:2.6rem;font-weight:700;letter-spacing:-.025em;color:var(--ox-text,#0a0f1e);line-height:1;font-variant-numeric:tabular-nums}
.reviews-score-stars{color:#f59e0b;letter-spacing:2px;font-size:1.05rem}
.reviews-score-count{color:var(--ox-muted,#64748b);font-size:.85rem}
.reviews-list{display:flex;flex-direction:column;gap:0}
.review-item{padding:16px 0;border-bottom:1px solid var(--ox-border,#e2e8f0);display:flex;gap:14px}
.review-item:last-child{border-bottom:none}
.review-content{flex:1;min-width:0}
.review-head{display:flex;align-items:center;gap:8px;margin-bottom:4px;flex-wrap:wrap}
.review-head strong{font-size:.92rem;font-weight:600}
.review-head .review-stars{color:#f59e0b;font-size:.82rem;letter-spacing:1px}
.review-head .review-date{color:var(--ox-subtle,#94a3b8);font-size:.78rem;margin-left:auto}
.review-content p{margin:0;color:var(--ox-text-soft,#334155);font-size:.92rem;line-height:1.6}

.review-form{
  background:var(--ox-bg-soft,#f7f9fc);border:1px solid var(--ox-border,#e2e8f0);border-radius:10px;padding:18px 20px;margin-top:18px;
}
.review-form h4{margin:0 0 10px;font-size:.95rem;font-weight:700}
.review-form select,.review-form textarea{
  width:100%;padding:9px 12px;border:1px solid var(--ox-border-strong,#cbd5e1);border-radius:7px;font-size:.9rem;font-family:inherit;
  background:#fff;
}
.review-form select:focus,.review-form textarea:focus{outline:none;border-color:var(--ox-primary,#0030da);box-shadow:0 0 0 3px rgba(0,48,218,.12)}
.review-form textarea{min-height:80px;resize:vertical;margin-top:8px}

/* ============================================================
   FAQ
============================================================ */
.faq-list{display:flex;flex-direction:column;gap:8px}
.faq-item{
  background:#fff;border:1px solid var(--ox-border,#e2e8f0);border-radius:10px;padding:14px 18px;
}
.faq-item summary{
  cursor:pointer;font-weight:600;font-size:.95rem;color:var(--ox-text,#0a0f1e);
  list-style:none;display:flex;align-items:center;gap:10px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:'+';color:var(--ox-primary,#0030da);font-weight:700;font-size:1.1rem;width:18px;line-height:1;
}
.faq-item[open] summary::before{content:'−'}
.faq-item p{margin:12px 0 0 28px;color:var(--ox-text-soft,#334155);font-size:.92rem;line-height:1.6}

/* ============================================================
   CERTIFICADO
============================================================ */
.certificate-section{
  background:linear-gradient(135deg,#fef3c7,#fff);border:1px solid #fde68a;
  border-radius:14px;padding:28px 32px;display:flex;gap:22px;align-items:center;
}
.certificate-icon{
  width:64px;height:64px;border-radius:14px;background:linear-gradient(135deg,#d97706,#b45309);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.6rem;flex-shrink:0;box-shadow:0 6px 16px rgba(180,83,9,.25);
}
.certificate-section h2{margin:0 0 6px;font-size:1.15rem;color:#92400e}
.certificate-section p{margin:0;color:#78350f;font-size:.92rem;line-height:1.55}

/* ============================================================
   SIDEBAR DE COMPRA
============================================================ */
.course-purchase-sidebar{position:sticky;top:88px;align-self:start}
.course-purchase-card{
  background:#fff;border:1px solid var(--ox-border,#e2e8f0);border-radius:14px;
  overflow:visible;height:auto;
}
.purchase-card-body{padding:22px}

.purchase-price{display:flex;align-items:baseline;gap:10px;margin-bottom:18px;flex-wrap:wrap}
.current-price{font-size:1.85rem;font-weight:700;color:var(--ox-text,#0a0f1e);letter-spacing:-.025em;font-variant-numeric:tabular-nums;line-height:1}
.current-price.free{color:var(--ox-success,#0e9f6e)}
.old-price{font-size:.95rem;color:var(--ox-subtle,#94a3b8);text-decoration:line-through;font-weight:500}
.discount-badge{
  background:#fef2f2;color:#b91c1c;font-weight:700;font-size:.74rem;padding:3px 9px;border-radius:99px;letter-spacing:.02em;
}

.btn-buy,.btn-cart{
  display:flex;align-items:center;justify-content:center;gap:7px;width:100%;
  padding:12px 18px;border-radius:9px;font-size:.92rem;font-weight:700;
  cursor:pointer;border:1px solid transparent;font-family:inherit;line-height:1.2;
  text-decoration:none;transition:all .12s;
}
.btn-buy{background:var(--ox-primary,#0030da);color:#fff;border-color:var(--ox-primary,#0030da);margin-bottom:8px}
.btn-buy:hover{background:var(--ox-primary-deep,#001a96);border-color:var(--ox-primary-deep,#001a96);color:#fff;text-decoration:none}
.btn-cart{background:#fff;color:var(--ox-text,#0a0f1e);border-color:var(--ox-border-strong,#cbd5e1)}
.btn-cart:hover{background:var(--ox-bg-soft,#f7f9fc);border-color:var(--ox-muted,#64748b);color:var(--ox-text,#0a0f1e);text-decoration:none}

.purchase-actions{
  display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:14px;padding-top:14px;border-top:1px solid var(--ox-border,#e2e8f0);
}
.purchase-action-btn{
  display:flex;align-items:center;justify-content:center;gap:6px;
  background:#fff;color:var(--ox-text-soft,#334155);border:1px solid var(--ox-border,#e2e8f0);
  padding:8px 10px;border-radius:8px;font-size:.82rem;font-weight:500;cursor:pointer;font-family:inherit;transition:all .12s;
}
.purchase-action-btn:hover{border-color:var(--ox-border-strong,#cbd5e1);color:var(--ox-text,#0a0f1e)}
.purchase-action-btn.on{background:var(--ox-primary-soft,#e6ebff);color:var(--ox-primary,#0030da);border-color:var(--ox-primary,#0030da)}
.purchase-action-btn svg{width:14px;height:14px}

.course-includes{padding:18px 22px;border-top:1px solid var(--ox-border,#e2e8f0)}
.course-includes h3{font-size:.78rem;font-weight:700;color:var(--ox-subtle,#94a3b8);text-transform:uppercase;letter-spacing:.08em;margin:0 0 12px}
.course-includes ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:9px}
.course-includes li{display:flex;align-items:center;gap:10px;font-size:.86rem;color:var(--ox-text-soft,#334155)}
.course-includes li strong{color:var(--ox-text,#0a0f1e);font-weight:600}
.course-includes .include-ico{
  width:22px;height:22px;border-radius:6px;background:var(--ox-primary-soft,#e6ebff);color:var(--ox-primary,#0030da);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.course-includes .include-ico svg{width:12px;height:12px}

.purchase-guarantee{
  display:flex;align-items:center;gap:8px;padding:14px 22px;background:var(--ox-bg-soft,#f7f9fc);border-top:1px solid var(--ox-border,#e2e8f0);
  font-size:.78rem;color:var(--ox-muted,#64748b);
}
.purchase-guarantee svg{color:var(--ox-success,#0e9f6e);flex-shrink:0}

/* ============================================================
   CTA FINAL
============================================================ */
.course-final-cta{
  background:linear-gradient(135deg,#0030da 0%,#001a96 100%);color:#fff;
  border-radius:18px;padding:48px 40px;text-align:center;position:relative;overflow:hidden;margin:36px 0;
}
.course-final-cta::before{
  content:'';position:absolute;inset:0;
  background-image:radial-gradient(circle at 80% 20%,rgba(255,255,255,.1) 0%,transparent 40%);
  pointer-events:none;
}
.course-final-cta h2{font-size:1.8rem;font-weight:700;color:#fff;letter-spacing:-.025em;margin:0 0 10px;position:relative;z-index:1}
.course-final-cta p{color:rgba(255,255,255,.85);font-size:1.02rem;margin:0 0 24px;max-width:560px;margin-left:auto;margin-right:auto;position:relative;z-index:1}
.course-final-cta .cta-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;position:relative;z-index:1}
.course-final-cta .btn-white{background:#fff;color:var(--ox-primary,#0030da);border:none;font-weight:700;padding:13px 26px;border-radius:9px;text-decoration:none;display:inline-flex;align-items:center;gap:6px;font-size:.95rem}
.course-final-cta .btn-white:hover{background:var(--ox-bg-soft,#f7f9fc);color:var(--ox-primary-deep,#001a96);text-decoration:none}
.course-final-cta .btn-ghost-white{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.3);font-weight:600;padding:13px 26px;border-radius:9px;text-decoration:none;display:inline-flex;align-items:center;gap:6px;font-size:.95rem}
.course-final-cta .btn-ghost-white:hover{background:rgba(255,255,255,.12);color:#fff;text-decoration:none}

/* ============================================================
   CURSOS RELACIONADOS
============================================================ */
.related-courses{margin-top:36px}
.related-courses h2{font-size:1.4rem;font-weight:700;letter-spacing:-.015em;margin:0 0 18px;color:var(--ox-text,#0a0f1e)}
.related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}

/* ============================================================
   RESPONSIVO
============================================================ */
@media(max-width:1180px){
  .course-detail-layout{grid-template-columns:minmax(0,1fr) 320px;gap:28px}
  .related-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(max-width:960px){
  .course-hero-layout{grid-template-columns:1fr;gap:28px}
  .course-detail-layout{grid-template-columns:1fr}
  .course-purchase-sidebar{position:static;order:-1;margin-bottom:18px}
  .course-tabs{position:static}
  .course-title{font-size:1.8rem}
  .learning-outcomes-grid{grid-template-columns:1fr;gap:12px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .instructor-card .instructor-profile{flex-direction:column;gap:14px}
}
@media(max-width:560px){
  .course-section{padding:22px 20px;border-radius:12px}
  .course-section > h2{font-size:1.1rem}
  .course-title{font-size:1.45rem}
  .reviews-summary{flex-direction:column;align-items:flex-start;gap:16px}
  .certificate-section{flex-direction:column;text-align:center;padding:22px}
  .related-grid{grid-template-columns:1fr}
  .course-final-cta{padding:32px 22px}
  .course-final-cta h2{font-size:1.4rem}
}