/* =========================================================================
   AIEngineers.in — Course detail page styles
   ========================================================================= */

.crs-hero{background:var(--navy);padding:48px 0 0;position:relative;overflow:hidden;color:#fff}
.crs-layout{display:grid;grid-template-columns:1fr 340px;gap:48px;align-items:flex-start;position:relative;z-index:2;padding-bottom:72px}
@media(max-width:1023px){.crs-layout{grid-template-columns:1fr;gap:32px}}
.crs-hero-pills{display:flex;gap:8px;margin-bottom:20px;flex-wrap:wrap}
.crs-hero h1{font-size:clamp(32px,4vw,48px);font-weight:700;color:#fff;line-height:1.1;margin-bottom:14px}
.crs-tagline{font-size:18px;color:var(--gray-400);line-height:1.7;margin-bottom:28px;max-width:600px}
.crs-statbar{display:grid;grid-template-columns:repeat(5,1fr);gap:0;padding:24px 0;border-top:1px solid rgba(255,255,255,.08);border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:24px}
@media(max-width:767px){.crs-statbar{grid-template-columns:repeat(2,1fr);gap:16px}}
.crs-statbar .it{text-align:center;border-right:1px solid rgba(255,255,255,.06)}
.crs-statbar .it:last-child{border-right:none}
@media(max-width:767px){.crs-statbar .it{border-right:none}}
.crs-statbar .n{font-family:var(--font-head);font-weight:700;font-size:22px;color:#fff;line-height:1}
.crs-statbar .l{font-size:11px;color:var(--gray-400);margin-top:6px;text-transform:uppercase;letter-spacing:.05em}

/* Sidebar enroll */
.crs-sidebar{position:sticky;top:80px;align-self:flex-start}
@media(max-width:1023px){.crs-sidebar{position:static}}
.crs-sidebar-card{background:#fff;border-radius:var(--radius-xl);border:1px solid var(--gray-200);box-shadow:0 16px 48px rgba(0,0,0,.15),0 0 0 1px rgba(99,102,241,.05);overflow:hidden;color:var(--text-dark)}
.crs-sb-top{background:var(--indigo);padding:14px 24px;display:flex;justify-content:space-between;align-items:center}
.crs-sb-top .txt{font-size:12px;color:var(--indigo-xl);font-weight:600}
.crs-sb-body{padding:24px}
.crs-price{font-family:var(--font-head);font-weight:700;font-size:34px;color:var(--text-dark);line-height:1}
.crs-price-sub{font-size:13px;color:var(--text-mid);margin-top:4px}
.crs-seat-row{display:flex;gap:8px;align-items:center;margin:16px 0 8px;font-size:14px;font-weight:700;color:#DC2626}
.crs-seat-row i{width:16px;height:16px}
.crs-sb-detail{display:flex;gap:10px;align-items:center;padding:10px 0;border-bottom:1px solid var(--gray-100);font-size:14px;font-weight:500;color:var(--text-dark)}
.crs-sb-detail:last-of-type{border-bottom:none}
.crs-sb-detail i{color:var(--indigo);width:16px;height:16px;flex-shrink:0}
.crs-enroll{width:100%;justify-content:center;margin-top:16px}
.crs-demo-line{text-align:center;margin-top:12px;font-size:13px;color:var(--text-mid)}
.crs-demo-line a{color:var(--indigo)}
.crs-sb-divider{margin:20px 0;border-top:1px solid var(--gray-200)}
.crs-guarantee{display:flex;gap:12px;align-items:flex-start}
.crs-guarantee i{color:var(--emerald);width:28px;height:28px;flex-shrink:0}
.crs-guarantee .t{font-family:var(--font-head);font-weight:700;font-size:14px;color:var(--text-dark);line-height:1.3}
.crs-guarantee .s{font-size:12px;color:var(--text-mid);margin-top:3px;line-height:1.5}

/* Sticky tab nav */
.crs-tabs-nav{position:sticky;top:68px;z-index:400;background:#fff;border-bottom:1px solid var(--gray-200);transition:box-shadow 200ms}
.crs-tabs-nav.is-sticky{box-shadow:0 4px 12px rgba(0,0,0,.05)}
.crs-tabs-list{display:flex;overflow-x:auto;scrollbar-width:none;max-width:var(--container);margin:0 auto;padding:0 24px}
.crs-tabs-list::-webkit-scrollbar{display:none}
.crs-tab-btn{padding:0 20px;height:52px;white-space:nowrap;font-family:var(--font-head);font-size:14px;font-weight:600;color:var(--text-mid);background:none;border:none;border-bottom:2px solid transparent;cursor:pointer;transition:color 150ms,border-color 150ms}
.crs-tab-btn:hover{color:var(--text-dark)}
.crs-tab-btn.active{color:var(--indigo);border-bottom-color:var(--indigo)}

/* Section */
.crs-section{padding:64px 0;border-top:1px solid var(--gray-100)}
.crs-section h2{font-size:22px;font-weight:700;color:var(--text-dark);margin-bottom:8px}
.crs-section .lead{font-size:15px;color:var(--text-mid);margin-bottom:28px}

/* Overview */
.outcomes-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:639px){.outcomes-grid{grid-template-columns:1fr}}
.outcome-item{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-dark);line-height:1.5}
.outcome-item i{width:18px;height:18px;color:var(--emerald);flex-shrink:0;margin-top:2px}
.req-list{display:flex;flex-direction:column;gap:10px}
.req-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-mid)}
.req-list .dot{width:6px;height:6px;background:var(--indigo);border-radius:50%;flex-shrink:0;margin-top:7px}
.audience-cards{display:flex;gap:16px;margin-top:8px}
@media(max-width:767px){.audience-cards{flex-direction:column}}
.audience-card{background:var(--gray-50);border:1px solid var(--gray-200);border-radius:var(--radius-md);padding:20px;flex:1}
.audience-card .ic{width:40px;height:40px;border-radius:50%;background:var(--indigo-l);color:var(--indigo);display:flex;align-items:center;justify-content:center}
.audience-card .ic i{width:20px;height:20px}
.audience-card .t{font-size:15px;font-weight:700;color:var(--text-dark);margin:14px 0 6px;line-height:1.35;font-family:var(--font-head)}
.audience-card .s{font-size:13px;color:var(--text-mid);line-height:1.55}

/* Curriculum accordion */
.week-block{margin-bottom:8px}
.week-header{width:100%;display:flex;align-items:center;justify-content:space-between;padding:18px 20px;background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-md);cursor:pointer;font-family:var(--font-head);font-size:15px;font-weight:600;color:var(--text-dark);text-align:left;transition:all 150ms;gap:12px}
.week-header:hover{border-color:var(--indigo)}
.week-block.open .week-header{border-color:var(--indigo);background:var(--indigo-l);color:var(--indigo);border-radius:var(--radius-md) var(--radius-md) 0 0}
.week-header-left{display:flex;align-items:center;gap:14px;min-width:0;flex:1}
.week-header-left .t{overflow:hidden;text-overflow:ellipsis}
.week-num{width:28px;height:28px;border-radius:50%;background:var(--indigo);color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-family:var(--font-head)}
.week-header-right{display:flex;align-items:center;gap:10px;flex-shrink:0}
.week-header-right .badge{font-size:11px}
.week-chevron{width:18px;height:18px;transition:transform 250ms ease;flex-shrink:0}
.week-block.open .week-chevron{transform:rotate(180deg)}
.week-body{max-height:0;overflow:hidden;transition:max-height 400ms cubic-bezier(.4,0,.2,1);border:1px solid var(--indigo);border-top:none;border-radius:0 0 var(--radius-md) var(--radius-md);background:#fff}
.lesson-item{display:flex;align-items:center;gap:12px;padding:12px 20px;border-bottom:1px solid var(--gray-100);font-size:14px;color:var(--text-dark)}
.lesson-item:last-child{border-bottom:none}
.lesson-item > i{width:14px;height:14px;color:var(--indigo);flex-shrink:0}
.lesson-duration{margin-left:auto;font-size:12px;color:var(--text-mid);flex-shrink:0}
.badge-free{font-size:10px;background:var(--emerald-l);color:var(--emerald-d);padding:2px 6px;border-radius:4px;font-weight:600}

/* Instructor */
.instructor-card{display:flex;gap:36px;align-items:flex-start}
@media(max-width:767px){.instructor-card{flex-direction:column}}
.instr-avatar{width:120px;height:120px;border-radius:50%;background:linear-gradient(135deg,var(--indigo),var(--emerald));display:flex;align-items:center;justify-content:center;color:#fff;font-family:var(--font-head);font-size:32px;font-weight:700;flex-shrink:0;margin-bottom:14px}
.instr-left{text-align:center;flex-shrink:0}
.instr-stars{color:var(--amber);font-size:18px;letter-spacing:2px}
.instr-reviews{font-size:13px;color:var(--text-mid);margin-top:4px}
.instr-bio h3{font-size:24px;font-weight:700;color:var(--text-dark);font-family:var(--font-head)}
.instr-bio .title{font-size:15px;color:var(--text-mid);margin:6px 0 16px}
.instr-badges{display:flex;gap:8px;margin-bottom:20px;flex-wrap:wrap}
.instr-bio p{font-size:15px;color:var(--text-mid);line-height:1.75}
.instr-stats{display:flex;gap:32px;padding-top:20px;border-top:1px solid var(--gray-200);margin-top:20px;flex-wrap:wrap}
.instr-stat .n{font-size:16px;font-weight:700;color:var(--text-dark);font-family:var(--font-head)}
.instr-stat .l{font-size:12px;color:var(--text-mid)}

/* Capstone */
.cap-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-md)}
.cap-stripe{height:6px;background:linear-gradient(90deg,var(--indigo),var(--emerald))}
.cap-body{padding:32px;display:flex;gap:40px}
@media(max-width:1023px){.cap-body{flex-direction:column;padding:24px;gap:24px}}
.cap-left{flex:1;min-width:0}
.cap-left h3{font-size:22px;font-weight:700;margin:14px 0 10px;color:var(--text-dark);font-family:var(--font-head)}
.cap-left .desc{font-size:15px;color:var(--text-mid);line-height:1.75;margin-bottom:24px}
.cap-stack-label{font-size:13px;font-weight:600;color:var(--text-mid);margin-bottom:10px}
.cap-stack{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.cap-checks{display:flex;flex-direction:column;gap:8px}
.cap-checks li{display:flex;gap:8px;font-size:14px;color:var(--text-dark)}
.cap-checks i{color:var(--emerald);width:16px;height:16px;flex-shrink:0;margin-top:2px}
.cap-right{flex:1;min-width:0}
.cap-code{background:#0D1117;border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-lg);overflow:hidden;min-width:0}
.cap-title-bar{background:#161B22;height:40px;padding:0 16px;display:flex;align-items:center;gap:8px}
.cap-dot{width:12px;height:12px;border-radius:50%}
.cap-dot.r{background:#FF5F56}.cap-dot.y{background:#FFBD2E}.cap-dot.g{background:#27C93F}
.cap-fname{margin-left:8px;font-family:var(--font-mono);font-size:12px;color:var(--gray-400);background:#0D1117;padding:4px 12px;border-radius:4px 4px 0 0}
.cap-code-body{padding:20px;font-family:var(--font-mono);font-size:12px;line-height:1.8;color:#C9D1D9;overflow-x:auto;white-space:pre-wrap}
.cap-status{background:#161B22;height:28px;padding:0 16px;display:flex;align-items:center;font-family:var(--font-mono);font-size:11px;color:#94A3B8;border-top:1px solid rgba(255,255,255,.06)}
.past-capstones{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:32px}
@media(max-width:767px){.past-capstones{grid-template-columns:1fr}}
.past-cap{background:var(--gray-100);border:1px solid var(--gray-200);border-radius:var(--radius-md);padding:18px;border-left-width:3px;border-left-style:solid}
.past-cap.indigo{border-left-color:var(--indigo)}
.past-cap.emerald{border-left-color:var(--emerald)}
.past-cap.amber{border-left-color:var(--amber)}
.past-cap .t{font-size:15px;font-weight:700;color:var(--text-dark);font-family:var(--font-head)}
.past-cap .s{font-size:13px;color:var(--text-mid);margin-top:4px}

/* Reviews */
.reviews-head{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:28px;flex-wrap:wrap}
.reviews-rating{text-align:right}
.reviews-rating .n{font-size:40px;font-family:var(--font-head);font-weight:700;color:var(--text-dark);line-height:1}
.reviews-rating .s{font-size:13px;color:var(--text-mid);margin-top:4px}
.rating-bars{margin-bottom:32px;max-width:480px}
.rb-row{display:flex;gap:12px;align-items:center;margin-bottom:8px;font-size:13px;color:var(--text-mid)}
.rb-row .lbl{width:56px;flex-shrink:0}
.rb-track{flex:1;height:8px;background:var(--gray-100);border-radius:100px;overflow:hidden}
.rb-fill{height:100%;background:var(--amber)}
.rb-row .pct{width:36px;text-align:right;flex-shrink:0}
.review-card{background:var(--gray-50);border:1px solid var(--gray-200);border-radius:var(--radius-md);padding:24px;margin-bottom:14px}
.review-top{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:10px;gap:12px;flex-wrap:wrap}
.review-id{display:flex;gap:12px;align-items:center}
.review-ava{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-family:var(--font-head);font-weight:700;font-size:14px;flex-shrink:0}
.review-name{font-size:15px;font-weight:700;color:var(--text-dark);font-family:var(--font-head)}
.review-date{font-size:12px;color:var(--text-mid);margin-top:2px}
.review-stars{color:var(--amber);font-size:14px;letter-spacing:1px;text-align:right}
.review-text{font-size:15px;color:var(--text-dark);line-height:1.7;margin-bottom:14px}

/* FAQ */
.faq-wrap{max-width:720px}
.faq-item{border-bottom:1px solid var(--gray-200)}
.faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;padding:18px 0;font-family:var(--font-head);font-size:16px;font-weight:600;color:var(--text-dark);background:none;border:none;text-align:left;cursor:pointer;gap:16px;line-height:1.4;transition:color 150ms}
.faq-question:hover{color:var(--indigo)}
.faq-question i{width:18px;height:18px;color:var(--indigo);flex-shrink:0;transition:transform 250ms ease}
.faq-item.open .faq-question{color:var(--indigo)}
.faq-item.open .faq-question i{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height 350ms ease;font-size:15px;color:var(--text-mid);line-height:1.75}
.faq-item.open .faq-answer{padding-bottom:18px}

/* Bottom CTA */
.crs-bottom{background:var(--navy);padding:72px 0;color:#fff;text-align:center}
.crs-bottom h2{color:#fff;font-family:var(--font-head);font-size:clamp(28px,3.5vw,40px);font-weight:700;margin-bottom:14px}
.crs-bottom p{color:var(--gray-400);font-size:17px;max-width:580px;margin:0 auto 0;line-height:1.7}
.crs-final-ctas{display:flex;gap:16px;justify-content:center;margin-top:32px;flex-wrap:wrap}