/* ========================================
   eLearnify Student Aurora Theme
   Shared styles for all student pages
   ======================================== */
:root{--c1:#00B4D8;--c1d:#0096B7;--c1l:#48CAE4;--c2:#F48C06;--c2d:#E07C00;--c2l:#FFB347;--dark:#0B1426;--dark2:#132039;--surface:#fff;--soft:#f0f7fa;--text:#1e293b;--text2:#64748b;--text3:#94a3b8;--border:#e2e8f0;--border-light:#f1f5f9;--radius:16px;--radius-lg:24px;--radius-sm:12px;--shadow-sm:0 1px 3px rgba(0,0,0,.06);--shadow-md:0 4px 16px rgba(0,0,0,.08);--shadow-lg:0 10px 40px rgba(0,0,0,.1);--transition:all .3s cubic-bezier(.4,0,.2,1);--emerald:#10B981;--emerald-light:#D1FAE5;--amber:#F59E0B;--amber-light:#FEF3C7;--cyan:#06B6D4}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;background:var(--soft);color:var(--text);line-height:1.6;overflow-x:hidden;min-height:100vh}

/* NAVBAR */
.st-nav{background:var(--dark)!important;padding:14px 0;box-shadow:0 2px 20px rgba(0,0,0,.2);position:sticky;top:0;z-index:1000}
.st-nav .container{display:flex;align-items:center;justify-content:space-between;max-width:1280px;margin:0 auto;padding:0 24px}
.st-nav-brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:20px;font-weight:800;color:#fff!important}
.st-nav-brand img{height:38px;filter:drop-shadow(0 2px 6px rgba(0,0,0,.3))}
.st-nav-links{display:flex;align-items:center;gap:4px;list-style:none}
.st-nav-links a{color:rgba(255,255,255,.8);text-decoration:none;padding:8px 16px;border-radius:10px;font-size:13px;font-weight:500;transition:var(--transition);display:flex;align-items:center;gap:6px}
.st-nav-links a:hover,.st-nav-links a.active{color:#fff;background:rgba(0,180,216,.25)}
.st-nav-toggle{display:none;background:none;border:none;color:#fff;font-size:22px;cursor:pointer;padding:8px}
@media(max-width:991px){.st-nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:var(--dark);flex-direction:column;padding:16px;gap:4px;border-top:1px solid rgba(255,255,255,.08);box-shadow:0 10px 30px rgba(0,0,0,.3)}.st-nav-links.open{display:flex}.st-nav-toggle{display:block}}

/* PAGE HERO */
.st-hero{background:linear-gradient(135deg,var(--dark) 0%,var(--dark2) 50%,rgba(0,180,216,.15) 100%);padding:clamp(32px,6vw,50px) 0;color:#fff;position:relative;overflow:hidden}
.st-hero::before{content:'';position:absolute;top:-50%;right:-20%;width:500px;height:500px;border-radius:50%;background:rgba(0,180,216,.08);animation:stFloat 8s ease-in-out infinite}
.st-hero::after{content:'';position:absolute;bottom:-40%;left:-15%;width:400px;height:400px;border-radius:50%;background:rgba(244,140,6,.06);animation:stFloat 6s ease-in-out infinite reverse}
@keyframes stFloat{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-20px) scale(1.05)}}
.st-hero h1{font-size:clamp(24px,5vw,36px);font-weight:800;margin-bottom:6px;position:relative;z-index:1}
.st-hero p{opacity:.8;font-size:clamp(14px,2.5vw,16px);position:relative;z-index:1}
.st-hero .greet-emoji{font-size:clamp(28px,5vw,40px);margin-right:6px}
.st-hero-actions{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap;position:relative;z-index:1}
.st-hero-btn{padding:9px 20px;border-radius:50px;border:1.5px solid rgba(255,255,255,.25);background:rgba(255,255,255,.1);color:#fff;font-weight:600;font-size:13px;text-decoration:none;backdrop-filter:blur(8px);transition:var(--transition);display:inline-flex;align-items:center;gap:7px}
.st-hero-btn:hover{background:rgba(255,255,255,.95);color:var(--c1);transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.15)}

/* ANIMATIONS */
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes scaleIn{from{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}
@keyframes shimmer{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}
@keyframes ringFill{from{stroke-dashoffset:251}}

/* FILTER TABS */
.st-filters{background:var(--surface);padding:18px 22px;border-radius:var(--radius);box-shadow:var(--shadow-sm);margin-top:-28px;position:relative;z-index:2;border:1px solid var(--border-light);margin-bottom:24px;animation:fadeInUp .5s ease-out}
.st-filter-tabs{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.st-filter-tab{padding:8px 18px;border-radius:50px;background:var(--border-light);color:var(--text2);text-decoration:none;font-size:13px;font-weight:600;transition:var(--transition);border:2px solid transparent;display:inline-flex;align-items:center;gap:6px}
.st-filter-tab:hover{color:var(--c1);border-color:var(--c1);background:rgba(0,180,216,.06)}
.st-filter-tab.active{background:linear-gradient(135deg,var(--c1),var(--c1d));color:#fff;border-color:transparent;box-shadow:0 4px 15px rgba(0,180,216,.25)}
.st-filter-tab .badge{background:rgba(255,255,255,.25);color:#fff;padding:2px 8px;border-radius:50px;font-size:11px;margin-left:3px}
.st-filter-tab:not(.active) .badge{background:var(--border);color:var(--text2)}
.st-sort select{padding:8px 14px;border:2px solid var(--border);border-radius:var(--radius-sm);font-size:13px;font-weight:500;cursor:pointer;transition:var(--transition);background:var(--surface);color:var(--text)}
.st-sort select:focus{outline:none;border-color:var(--c1);box-shadow:0 0 0 3px rgba(0,180,216,.1)}
.st-sort{margin-left:auto}

/* CARDS */
.st-card{background:var(--surface);border-radius:var(--radius);padding:clamp(18px,3vw,24px);box-shadow:var(--shadow-sm);border:1px solid var(--border-light);margin-bottom:20px;animation:fadeInUp .5s ease-out backwards}
.st-section-title{font-size:clamp(17px,3.5vw,20px);font-weight:700;margin-bottom:clamp(14px,3vw,18px);color:var(--text);display:flex;align-items:center;gap:8px}
.st-section-title i{color:var(--c1);font-size:clamp(17px,3vw,20px)}

/* COURSE GRID */
.st-courses-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(300px,100%),1fr));gap:clamp(16px,3vw,24px);margin-bottom:clamp(20px,4vw,32px)}
.st-course-card{background:var(--surface);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);transition:all .4s cubic-bezier(.175,.885,.32,1.275);display:flex;flex-direction:column;animation:scaleIn .5s ease-out backwards}
.st-course-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(0,180,216,.15)}
.st-course-thumb{width:100%;height:clamp(150px,25vw,190px);background:linear-gradient(135deg,var(--c1),var(--c2));position:relative;background-size:cover;background-position:center}
.st-course-thumb::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(0,0,0,.15) 100%)}
.st-course-badge{position:absolute;top:10px;right:10px;background:var(--surface);padding:5px 12px;border-radius:50px;font-size:12px;font-weight:700;z-index:2;box-shadow:var(--shadow-sm)}
.st-badge-completed{color:var(--emerald)}.st-badge-progress{color:var(--c1)}
.st-course-body{padding:clamp(16px,3vw,22px);flex:1;display:flex;flex-direction:column}
.st-course-cat{display:inline-block;background:rgba(0,180,216,.08);color:var(--c1);padding:3px 10px;border-radius:50px;font-size:11px;font-weight:700;text-transform:uppercase;margin-bottom:8px;width:fit-content}
.st-course-title{font-size:clamp(15px,3vw,17px);font-weight:700;color:var(--text);margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:40px;line-height:1.4}
.st-course-teacher{font-size:clamp(12px,2.5vw,13px);color:var(--text2);margin-bottom:12px;display:flex;align-items:center;gap:6px}
.st-course-teacher i{color:var(--c1)}
.st-teacher-av{width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,var(--c1),var(--c2));display:flex;align-items:center;justify-content:center;color:#fff;font-size:12px;font-weight:700;flex-shrink:0}

/* PROGRESS */
.st-progress-track{height:6px;background:var(--border-light);border-radius:10px;overflow:hidden;margin-bottom:8px}
.st-progress-fill{height:100%;background:linear-gradient(90deg,var(--c1),var(--c1d));border-radius:10px;transition:width 1s ease-out;position:relative;overflow:hidden}
.st-progress-fill::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);animation:shimmer 2s infinite}
.st-progress-info{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px;font-size:12px}
.st-progress-pct{font-weight:700;color:var(--c1)}
.st-progress-lessons{color:var(--text3)}

/* BUTTONS */
.st-btn{width:100%;padding:10px 18px;border-radius:var(--radius-sm);font-weight:600;font-size:13px;text-decoration:none!important;text-align:center;transition:var(--transition);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:7px;color:#fff}
.st-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);color:#fff}
.st-btn-primary{background:linear-gradient(135deg,var(--c1),var(--c1d))}
.st-btn-primary:hover{box-shadow:0 6px 20px rgba(0,180,216,.3)}
.st-btn-success{background:linear-gradient(135deg,var(--emerald),#34D399)}
.st-btn-success:hover{box-shadow:0 6px 20px rgba(16,185,129,.3)}
.st-btn-warning{background:linear-gradient(135deg,var(--c2),var(--c2d))}
.st-btn-warning:hover{box-shadow:0 6px 20px rgba(244,140,6,.3)}
.st-btn-outline{background:transparent;border:2px solid var(--c1);color:var(--c1)!important}
.st-btn-outline:hover{background:var(--c1);color:#fff!important}
.st-btn-ghost{background:rgba(0,180,216,.08);color:var(--c1)!important}
.st-btn-ghost:hover{background:var(--c1);color:#fff!important}

/* PROGRESS RING */
.st-ring-container{text-align:center;margin-bottom:16px}
.st-ring{transform:rotate(-90deg)}
.st-ring-bg{fill:none;stroke:var(--border-light);stroke-width:8}
.st-ring-fill{fill:none;stroke:url(#stRingGrad);stroke-width:8;stroke-linecap:round;stroke-dasharray:251;transition:stroke-dashoffset 1.5s ease-out}
.st-ring-label{font-size:26px;font-weight:800;color:var(--text)}
.st-ring-sub{font-size:12px;color:var(--text2)}

/* ACTIVITY */
.st-activity{display:flex;align-items:flex-start;gap:12px;padding:12px 0;border-bottom:1px solid var(--border-light);transition:var(--transition)}
.st-activity:last-child{border-bottom:none}
.st-activity:hover{transform:translateX(3px)}
.st-activity-dot{width:36px;height:36px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;background:var(--emerald-light);color:var(--emerald);font-size:14px}
.st-activity h6{margin:0 0 2px;font-size:13px;font-weight:600;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.st-activity p{margin:0;font-size:11px;color:var(--text3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* NOTIFICATIONS */
.st-notif{background:var(--border-light);border-left:3px solid var(--c1);padding:12px;border-radius:var(--radius-sm);margin-bottom:8px;transition:var(--transition)}
.st-notif:hover{transform:translateX(3px);background:rgba(0,180,216,.06)}
.st-notif.unread{background:rgba(0,180,216,.06);border-left-color:var(--c2)}
.st-notif h6{margin:0 0 3px;font-size:13px;font-weight:600;color:var(--text)}
.st-notif p{margin:0 0 3px;font-size:12px;color:var(--text2);line-height:1.4}
.st-notif small{font-size:11px;color:var(--text3)}
.st-notif-badge{background:var(--c2);color:#fff;font-size:11px;font-weight:700;padding:2px 7px;border-radius:50px;margin-left:6px}

/* STREAK */
.st-streak{background:linear-gradient(135deg,rgba(0,180,216,.08),rgba(244,140,6,.08));border:1px solid rgba(0,180,216,.12);border-radius:var(--radius);padding:18px;text-align:center;margin-bottom:18px}
.st-streak-icon{font-size:32px;margin-bottom:4px}
.st-streak-num{font-size:22px;font-weight:800;color:var(--c2)}
.st-streak-label{font-size:12px;color:var(--text2);margin-top:2px}

/* EMPTY STATE */
.st-empty{text-align:center;padding:clamp(40px,8vw,60px) 20px;background:var(--surface);border:2px dashed var(--border);border-radius:var(--radius-lg);animation:scaleIn .6s ease-out}
.st-empty i{font-size:clamp(44px,10vw,64px);color:var(--text3);margin-bottom:16px;display:block}
.st-empty h3{font-size:clamp(18px,4vw,22px);color:var(--text);margin-bottom:6px;font-weight:700}
.st-empty p{color:var(--text2);margin-bottom:18px;font-size:clamp(13px,2.5vw,15px)}

/* RECOMMENDED */
.st-rec-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:14px}
.st-rec-card{background:var(--surface);border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--border-light);box-shadow:var(--shadow-sm);transition:var(--transition)}
.st-rec-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.st-rec-thumb{width:100%;height:clamp(80px,16vw,110px);background:linear-gradient(135deg,var(--c1),var(--c2))}
.st-rec-body{padding:12px}
.st-rec-body h6{font-size:13px;font-weight:700;margin-bottom:6px;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:36px}
.st-rec-body p{font-size:11px;color:var(--text2);margin-bottom:8px;display:flex;align-items:center;gap:4px}
.st-rec-footer{display:flex;justify-content:space-between;align-items:center}
.st-rec-price{font-size:16px;font-weight:800;color:var(--c2)}
.st-rec-btn{padding:5px 12px;font-size:12px;border:1.5px solid var(--c1);background:transparent;color:var(--c1);border-radius:50px;text-decoration:none;font-weight:600;transition:var(--transition)}
.st-rec-btn:hover{background:var(--c1);color:#fff}

/* LIVE CLASS */
.st-live-card{background:var(--surface);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);margin-bottom:16px;transition:var(--transition)}
.st-live-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.st-live-card.upcoming{border-left:4px solid var(--c1)}
.st-live-card.past{opacity:.65}
.st-live-topic{font-size:18px;font-weight:700;color:var(--text);margin-bottom:8px}
.st-live-meta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:12px;font-size:13px;color:var(--text2)}
.st-live-meta span{display:flex;align-items:center;gap:5px}
.st-live-meta i{color:var(--c1)}
.st-countdown{background:linear-gradient(135deg,rgba(0,180,216,.08),rgba(244,140,6,.08));border-radius:10px;padding:10px 16px;display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--c1);font-size:13px;margin-bottom:12px}

/* PROFILE */
.st-profile-card{background:var(--surface);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);margin-bottom:24px}
.st-profile-header{display:flex;flex-direction:column;align-items:center;text-align:center;padding-bottom:24px;border-bottom:1px solid var(--border-light);margin-bottom:24px}
.st-avatar{position:relative}
.st-avatar img{width:120px;height:120px;border-radius:50%;object-fit:cover;border:4px solid var(--c1);box-shadow:0 6px 20px rgba(0,180,216,.2)}
.st-avatar .upload-btn{position:absolute;bottom:2px;right:2px;background:var(--c1);color:#fff;width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;border:3px solid var(--surface);transition:var(--transition);font-size:13px}
.st-avatar .upload-btn:hover{background:var(--c1d);transform:scale(1.1)}
.st-profile-name{font-size:24px;font-weight:700;margin-top:14px;margin-bottom:4px}
.st-profile-email{color:var(--text2);font-size:14px;margin-bottom:14px}
.st-profile-stats{display:flex;gap:28px}
.st-stat-item{text-align:center}
.st-stat-num{font-size:24px;font-weight:800;color:var(--c1);display:block}
.st-stat-label{font-size:12px;color:var(--text2)}
.st-form label{font-weight:600;margin-bottom:6px;display:block;color:var(--text);font-size:14px}
.st-form .form-control{border:2px solid var(--border);padding:10px 14px;border-radius:var(--radius-sm);font-size:14px;transition:var(--transition)}
.st-form .form-control:focus{border-color:var(--c1);box-shadow:0 0 0 3px rgba(0,180,216,.1)}
.st-form .form-group{margin-bottom:18px}
.st-form textarea.form-control{min-height:100px;resize:vertical}

/* PAYMENT SUCCESS */
.st-success-bg{background:linear-gradient(135deg,var(--dark),var(--dark2));min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.st-success-card{background:var(--surface);border-radius:var(--radius-lg);padding:clamp(32px,6vw,48px) clamp(24px,5vw,40px);box-shadow:0 20px 60px rgba(0,0,0,.3);text-align:center;max-width:600px;width:100%;animation:fadeInUp .6s ease-out}
.st-success-icon{width:100px;height:100px;margin:0 auto 24px;border-radius:50%;background:linear-gradient(135deg,var(--emerald),#34D399);display:flex;align-items:center;justify-content:center;color:#fff;font-size:48px;animation:scaleIn .6s ease-out}
.st-success-title{font-size:clamp(26px,5vw,34px);font-weight:800;color:var(--emerald);margin-bottom:10px}
.st-success-msg{font-size:16px;color:var(--text2);margin-bottom:28px;line-height:1.6}

/* COMPLETED BADGE */
.st-completed-badge{background:var(--emerald-light);color:var(--emerald);padding:10px;border-radius:var(--radius-sm);font-size:13px;font-weight:600;margin-bottom:12px;text-align:center}

/* FOOTER */
.st-footer{text-align:center;padding:24px 0;color:var(--text3);font-size:13px;border-top:1px solid var(--border-light);margin-top:32px}

/* SCROLLBAR */
::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--soft)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text3)}

/* RESPONSIVE */
@media(max-width:768px){.st-filter-tabs{flex-direction:column;align-items:stretch}.st-filter-tab{text-align:center;justify-content:center}.st-sort{margin-left:0;margin-top:6px}.st-sort select{width:100%}.st-profile-stats{gap:16px}}
@media(hover:none)and(pointer:coarse){.st-btn,.st-hero-btn,.st-rec-btn{min-height:44px}}

/* ========================================
   COURSE DETAILS PAGE
   ======================================== */
.cd-header{background:linear-gradient(135deg,var(--dark) 0%,var(--dark2) 50%,rgba(0,180,216,.12) 100%);padding:clamp(32px,6vw,48px) 0;color:#fff;position:relative;overflow:hidden}
.cd-header::before{content:'';position:absolute;top:-60%;right:-15%;width:500px;height:500px;border-radius:50%;background:rgba(0,180,216,.06)}
.cd-header::after{content:'';position:absolute;bottom:-50%;left:-10%;width:400px;height:400px;border-radius:50%;background:rgba(244,140,6,.04)}
.cd-header h1{font-size:clamp(22px,4vw,32px);font-weight:800;margin-bottom:10px;line-height:1.3;position:relative;z-index:1}
.cd-header .cd-short{font-size:clamp(14px,2vw,16px);opacity:.85;margin-bottom:16px;position:relative;z-index:1;max-width:700px}
.cd-meta{display:flex;gap:18px;flex-wrap:wrap;position:relative;z-index:1}
.cd-meta-item{display:flex;align-items:center;gap:7px;font-size:13px;font-weight:500;color:rgba(255,255,255,.85)}
.cd-meta-item i{color:var(--c1);font-size:14px}
.cd-breadcrumb{font-size:12px;margin-bottom:12px;position:relative;z-index:1;opacity:.7}
.cd-breadcrumb a{color:#fff;text-decoration:none}.cd-breadcrumb a:hover{text-decoration:underline}

.cd-box{background:var(--surface);border-radius:var(--radius);padding:clamp(20px,4vw,28px);margin-bottom:20px;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);animation:fadeInUp .5s ease-out backwards}
.cd-box h3{font-size:clamp(18px,3.5vw,22px);font-weight:700;margin-bottom:16px;color:var(--text);display:flex;align-items:center;gap:8px}
.cd-box h3 i{color:var(--c1)}
.cd-box p{font-size:15px;line-height:1.8;color:var(--text2)}
.cd-box ul{list-style:none;padding:0;margin:0}
.cd-box ul li{padding:8px 0;display:flex;align-items:flex-start;gap:10px;font-size:14px;line-height:1.6;color:var(--text)}
.cd-box ul li i{color:var(--emerald);margin-top:3px;flex-shrink:0}
.cd-box ul li i.fa-circle{color:var(--c2);font-size:6px;margin-top:8px}

.cd-thumb-mobile{width:100%;border-radius:var(--radius);overflow:hidden;margin-bottom:20px;box-shadow:var(--shadow-md)}
.cd-thumb-mobile img{width:100%;height:auto;display:block}
.cd-thumb-desktop{display:none}

.cd-video video{width:100%;border-radius:var(--radius-sm);max-height:380px;background:#000}

/* Curriculum Accordion */
.cd-section{border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden;transition:var(--transition)}
.cd-section:hover{border-color:rgba(0,180,216,.2)}
.cd-section-head{background:var(--soft);padding:14px 18px;font-weight:600;font-size:14px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:var(--transition);user-select:none}
.cd-section-head:hover{background:rgba(0,180,216,.06)}
.cd-section-head i.fa-folder{color:var(--c1);margin-right:8px}
.cd-lesson{padding:10px 18px;display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--border-light);font-size:13px;transition:var(--transition)}
.cd-lesson:hover{background:rgba(0,180,216,.03)}
.cd-lesson i{color:var(--text3);margin-right:8px}
.cd-lesson-preview{color:var(--c1);font-size:11px;font-weight:700;padding:2px 8px;background:rgba(0,180,216,.08);border-radius:50px}

/* Instructor */
.cd-instructor{display:flex;gap:18px;align-items:center}
.cd-instructor-av{width:72px;height:72px;border-radius:50%;overflow:hidden;flex-shrink:0;background:linear-gradient(135deg,var(--c1),var(--c2));display:flex;align-items:center;justify-content:center}
.cd-instructor-av img{width:100%;height:100%;object-fit:cover}
.cd-instructor-av i{color:#fff;font-size:28px}
.cd-instructor-info h4{font-size:18px;font-weight:700;margin-bottom:4px;color:var(--text)}
.cd-instructor-info p{font-size:13px;color:var(--text2);line-height:1.6}

/* Price Card Sidebar */
.cd-price-card{background:var(--surface);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-lg);border:1px solid var(--border-light);position:sticky;top:80px;animation:fadeInUp .6s ease-out}
.cd-price-card .cd-thumb-desktop{display:block;width:100%;border-radius:var(--radius-sm);overflow:hidden;margin-bottom:18px}
.cd-price-card .cd-thumb-desktop img{width:100%;height:auto;display:block}
.cd-price-val{font-size:clamp(28px,5vw,34px);font-weight:900;color:var(--c2)}
.cd-price-old{text-decoration:line-through;color:var(--text3);font-size:16px;font-weight:500;margin-left:8px}
.cd-discount-badge{display:inline-block;background:linear-gradient(135deg,var(--emerald),#34D399);color:#fff;padding:3px 10px;border-radius:50px;font-size:11px;font-weight:700;margin-left:8px}
.cd-enroll-btn{width:100%;padding:14px;background:linear-gradient(135deg,var(--c1),var(--c1d));color:#fff;border:none;border-radius:var(--radius-sm);font-size:16px;font-weight:700;margin-top:16px;cursor:pointer;transition:var(--transition);text-decoration:none;display:block;text-align:center}
.cd-enroll-btn:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,180,216,.35);color:#fff}
.cd-enroll-btn.enrolled{background:linear-gradient(135deg,var(--emerald),#34D399)}
.cd-enroll-btn.enrolled:hover{box-shadow:0 8px 25px rgba(16,185,129,.35)}
.cd-price-card ul{list-style:none;padding:0;margin:16px 0 0}
.cd-price-card ul li{padding:9px 0;display:flex;align-items:center;gap:10px;font-size:13px;border-bottom:1px solid var(--border-light)}
.cd-price-card ul li:last-child{border-bottom:none}
.cd-price-card ul li i{color:var(--c1);width:18px;text-align:center}

/* Related */
.cd-related{background:var(--surface);border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--border-light);box-shadow:var(--shadow-sm);transition:var(--transition);text-decoration:none;color:inherit;display:block}
.cd-related:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.cd-related-thumb{width:100%;height:120px;background:linear-gradient(135deg,var(--c1),var(--c2));background-size:cover;background-position:center}
.cd-related-body{padding:14px}
.cd-related-body h6{font-size:14px;font-weight:700;margin-bottom:6px;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:40px}
.cd-related-body p{font-size:12px;color:var(--text2);margin-bottom:6px}
.cd-related-price{font-size:18px;font-weight:800;color:var(--c2)}

@media(min-width:992px){.cd-thumb-mobile{display:none}.cd-price-card .cd-thumb-desktop{display:block}}
@media(max-width:991px){.cd-price-card{position:static;margin-bottom:24px}}