/* courses.amitchaudhary.in — E-Learning Platform CSS */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;0,900;1,400&family=DM+Sans:opsz,wght@9..40,300;9..40,400;9..40,500;9..40,600;9..40,700&family=DM+Mono:wght@400;500&display=swap');

:root {
  --brand-navy:#0e2a47;--brand-navy-mid:#1a3c5e;--brand-navy-lt:#2d5a8e;
  --brand-orange:#e8720c;--brand-orange-lt:#f5922a;--brand-orange-dim:rgba(232,114,12,.10);--brand-orange-glow:rgba(232,114,12,.22);
  --bg-deep:#f5f4f0;--bg-card:#ffffff;--bg-elevated:#eeecea;
  --border:rgba(14,42,71,.10);--border-brand:rgba(232,114,12,.30);
  --text-primary:#0e2a47;--text-secondary:#3a5570;--text-muted:#7a95aa;
  --green:#16a34a;--blue:#2563eb;
  --shadow-card:0 2px 20px rgba(14,42,71,.07);--shadow-brand:0 4px 30px rgba(232,114,12,.12);
  --radius-sm:6px;--radius-md:14px;--radius-lg:22px;--radius-xl:36px;
  --transition:all .28s cubic-bezier(.4,0,.2,1);
  --font-display:'Playfair Display',Georgia,serif;--font-body:'DM Sans',sans-serif;--font-mono:'DM Mono',monospace;
  --nav-height:68px;
}
[data-theme="dark"]{--bg-deep:#060d18;--bg-card:#0b1728;--bg-elevated:#111f36;--border:rgba(255,255,255,.07);--border-brand:rgba(232,114,12,.28);--text-primary:#e2eaf3;--text-secondary:#8aaac4;--text-muted:#4a6a82;--shadow-card:0 2px 40px rgba(0,0,0,.5);}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;font-size:16px;}
body{background:var(--bg-deep);color:var(--text-primary);font-family:var(--font-body);line-height:1.65;overflow-x:hidden;transition:background .35s,color .35s;}
::-webkit-scrollbar{width:5px;}::-webkit-scrollbar-track{background:var(--bg-deep);}::-webkit-scrollbar-thumb{background:var(--brand-orange);border-radius:3px;}
h1,h2,h3,h4,h5{font-family:var(--font-display);font-weight:700;line-height:1.2;color:var(--text-primary);}
h1{font-size:clamp(2rem,4.5vw,3.8rem);}h2{font-size:clamp(1.65rem,3vw,2.6rem);}h3{font-size:clamp(1.15rem,2vw,1.55rem);}
h4{font-size:1.05rem;font-family:var(--font-body);font-weight:600;}p{color:var(--text-secondary);line-height:1.78;}
a{color:var(--brand-orange);text-decoration:none;transition:var(--transition);}a:hover{color:var(--brand-orange-lt);}
.text-brand{color:var(--brand-orange)!important;}.italic{font-style:italic;}
.section-pad{padding:90px 0;}.section-pad-sm{padding:56px 0;}
.section-label{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:var(--brand-orange);display:block;margin-bottom:.8rem;}
.divider-brand{border:none;height:1px;background:linear-gradient(90deg,transparent,var(--border-brand),transparent);}
.theme-toggle{width:36px;height:36px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-elevated);color:var(--text-muted);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:var(--transition);font-size:.95rem;}
.theme-toggle:hover{border-color:var(--border-brand);color:var(--brand-orange);}

/* NAVBAR */
.navbar-ac{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--nav-height);background:rgba(245,244,240,.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);transition:var(--transition);}
[data-theme="dark"] .navbar-ac{background:rgba(6,13,24,.92);}
.navbar-ac.scrolled{border-bottom-color:var(--border-brand);}
.navbar-ac .container-fluid{padding:0 36px;height:100%;}
.nav-brand{display:flex;align-items:center;gap:8px;text-decoration:none;}
.nav-brand img{height:34px;width:auto;}
.nav-brand-text{font-family:var(--font-display);font-size:1.15rem;font-weight:700;color:var(--brand-navy);}
[data-theme="dark"] .nav-brand-text{color:var(--text-primary);}
.nav-brand-text span{color:var(--brand-orange);}
.nav-brand-sub{font-family:var(--font-mono);font-size:.6rem;color:var(--brand-orange);letter-spacing:.15em;text-transform:uppercase;display:block;line-height:1;}
.navbar-ac .nav-link{font-size:.76rem;font-weight:600;letter-spacing:.07em;text-transform:uppercase;color:var(--text-secondary)!important;padding:.3rem .8rem!important;transition:var(--transition);}
.navbar-ac .nav-link:hover,.navbar-ac .nav-link.active{color:var(--brand-orange)!important;}
.btn-nav-cta{background:var(--brand-orange)!important;color:#fff!important;font-size:.74rem!important;font-weight:700!important;letter-spacing:.1em!important;padding:8px 20px!important;border-radius:4px!important;text-transform:uppercase!important;}
.btn-nav-cta:hover{background:var(--brand-orange-lt)!important;}
.navbar-toggler{border:1px solid var(--border-brand);border-radius:4px;padding:5px 9px;background:transparent;}
.navbar-toggler-icon{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23e8720c' stroke-linecap='round' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");}

/* BUTTONS */
.btn-brand{display:inline-flex;align-items:center;gap:8px;background:var(--brand-orange);color:#fff;font-size:.82rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:13px 30px;border-radius:4px;border:none;cursor:pointer;transition:var(--transition);}
.btn-brand:hover{background:var(--brand-orange-lt);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px var(--brand-orange-glow);}
.btn-outline-brand{display:inline-flex;align-items:center;gap:8px;background:transparent;color:var(--brand-orange);font-size:.82rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:12px 28px;border-radius:4px;border:2px solid var(--brand-orange);cursor:pointer;transition:var(--transition);}
.btn-outline-brand:hover{background:var(--brand-orange);color:#fff;transform:translateY(-2px);}
.btn-navy{display:inline-flex;align-items:center;gap:8px;background:var(--brand-navy);color:#fff;font-size:.82rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:12px 26px;border-radius:4px;border:none;cursor:pointer;transition:var(--transition);}
.btn-navy:hover{background:var(--brand-navy-mid);color:#fff;}

/* CARDS */
.card-ac{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;transition:var(--transition);box-shadow:var(--shadow-card);}
.card-ac:hover{border-color:var(--border-brand);transform:translateY(-3px);box-shadow:var(--shadow-card),var(--shadow-brand);}

/* BADGES */
.badge-brand{display:inline-block;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;padding:4px 11px;border-radius:3px;background:var(--brand-orange-dim);color:var(--brand-orange);border:1px solid var(--border-brand);}
.badge-green{background:rgba(22,163,74,.1);color:var(--green);border:1px solid rgba(22,163,74,.25);font-family:var(--font-mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;padding:4px 11px;border-radius:3px;display:inline-block;}

/* COURSE CARDS */
.course-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:var(--transition);display:flex;flex-direction:column;box-shadow:var(--shadow-card);}
.course-card.featured{border-color:var(--border-brand);box-shadow:var(--shadow-card),var(--shadow-brand);}
.course-card:hover{border-color:var(--border-brand);transform:translateY(-5px);box-shadow:var(--shadow-card),var(--shadow-brand);}
.course-thumb{aspect-ratio:16/9;overflow:hidden;position:relative;background:var(--bg-elevated);}
.course-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.course-card:hover .course-thumb img{transform:scale(1.04);}
.course-thumb-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:4rem;}
.course-thumb .course-badge{position:absolute;top:12px;left:12px;}
.course-body{padding:24px;flex:1;display:flex;flex-direction:column;}
.course-category{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:var(--brand-orange);margin-bottom:8px;}
.course-title{font-family:var(--font-display);font-size:1.15rem;font-weight:700;color:var(--text-primary);margin-bottom:.6rem;line-height:1.3;flex:1;}
.course-desc{font-size:.87rem;color:var(--text-muted);margin-bottom:1.2rem;line-height:1.6;}
.course-meta{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:1.2rem;}
.course-meta-item{display:flex;align-items:center;gap:5px;font-size:.78rem;color:var(--text-muted);}
.course-meta-item i{color:var(--brand-orange);}
.course-includes{list-style:none;padding:0;margin-bottom:1.2rem;}
.course-includes li{font-size:.82rem;color:var(--text-secondary);padding:5px 0;display:flex;align-items:center;gap:7px;border-bottom:1px solid var(--border);}
.course-includes li:last-child{border-bottom:none;}
.course-includes li::before{content:'✦';color:var(--brand-orange);font-size:.58rem;flex-shrink:0;}
.course-footer{padding:18px 24px;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:12px;}
.course-price{font-family:var(--font-display);font-size:1.25rem;font-weight:800;color:var(--brand-navy);}
[data-theme="dark"] .course-price{color:var(--brand-orange);}
.course-price-orig{font-size:.85rem;color:var(--text-muted);text-decoration:line-through;margin-left:6px;}
.course-price-note{font-size:.68rem;color:var(--text-muted);letter-spacing:.08em;text-transform:uppercase;display:block;}

/* RATING STARS */
.stars{color:#f5a623;font-size:.85rem;letter-spacing:.05em;}
.rating-count{font-size:.78rem;color:var(--text-muted);margin-left:5px;}

/* LESSON LIST */
.lesson-list{list-style:none;padding:0;}
.lesson-item{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border);transition:var(--transition);}
.lesson-item:last-child{border-bottom:none;}
.lesson-item:hover{background:var(--bg-elevated);}
.lesson-num{font-family:var(--font-mono);font-size:.7rem;color:var(--text-muted);width:22px;flex-shrink:0;}
.lesson-icon{font-size:1rem;flex-shrink:0;}
.lesson-title{font-size:.88rem;color:var(--text-primary);flex:1;}
.lesson-duration{font-size:.75rem;color:var(--text-muted);flex-shrink:0;}
.lesson-free{font-size:.68rem;background:rgba(22,163,74,.1);color:var(--green);border:1px solid rgba(22,163,74,.25);padding:2px 8px;border-radius:3px;flex-shrink:0;}

/* INSTRUCTOR CARD */
.instructor-card{background:var(--bg-card);border:1px solid var(--border-brand);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-card),var(--shadow-brand);}
.instructor-avatar{width:80px;height:80px;border-radius:50%;border:3px solid var(--border-brand);object-fit:cover;}

/* ENROLL BOX (sticky) */
.enroll-box{background:var(--bg-card);border:1px solid var(--border-brand);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-card),var(--shadow-brand);position:sticky;top:calc(var(--nav-height) + 20px);}
.enroll-price-big{font-family:var(--font-display);font-size:2.4rem;font-weight:900;color:var(--brand-navy);line-height:1;}
[data-theme="dark"] .enroll-price-big{color:var(--brand-orange);}
.enroll-features{list-style:none;padding:0;margin:1.2rem 0;}
.enroll-features li{font-size:.87rem;color:var(--text-secondary);padding:8px 0;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:9px;}
.enroll-features li:last-child{border-bottom:none;}
.enroll-features li i{color:var(--green);flex-shrink:0;}

/* HERO */
.course-hero{background:linear-gradient(135deg,var(--brand-navy) 0%,var(--brand-navy-mid) 70%,#1e4875 100%);padding:calc(var(--nav-height) + 56px) 0 56px;position:relative;overflow:hidden;}
.course-hero h1{color:#fff;}
.course-hero p{color:rgba(255,255,255,.75);}

/* PAGE HERO */
.page-hero{padding:calc(var(--nav-height) + 56px) 0 56px;background:linear-gradient(135deg,var(--brand-navy),var(--brand-navy-mid));position:relative;}
.page-hero h1{color:#fff;}
.page-hero::after{content:'';position:absolute;bottom:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--brand-orange),transparent);}
.breadcrumb-ac{display:flex;align-items:center;gap:8px;font-size:.78rem;margin-bottom:1.2rem;}
.breadcrumb-ac a{color:rgba(255,255,255,.5);}.breadcrumb-ac a:hover{color:var(--brand-orange);}
.breadcrumb-ac .sep{color:rgba(255,255,255,.25);}.breadcrumb-ac .current{color:rgba(255,255,255,.8);}

/* NEWSLETTER */
.newsletter-section{background:var(--brand-navy);border-radius:var(--radius-xl);padding:56px 44px;text-align:center;position:relative;overflow:hidden;}
[data-theme="dark"] .newsletter-section{background:var(--bg-card);border:1px solid var(--border-brand);}
.newsletter-section::before{content:'';position:absolute;top:-60px;right:-60px;width:280px;height:280px;background:radial-gradient(circle,rgba(232,114,12,.18) 0%,transparent 70%);pointer-events:none;}
.newsletter-section h3{color:#fff;}[data-theme="dark"] .newsletter-section h3{color:var(--text-primary);}
.newsletter-section p{color:rgba(255,255,255,.65);}[data-theme="dark"] .newsletter-section p{color:var(--text-secondary);}
.newsletter-form{display:flex;gap:10px;max-width:460px;margin:0 auto;}
.newsletter-input{flex:1;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:4px;color:#fff;font-family:var(--font-body);font-size:.9rem;padding:13px 16px;outline:none;transition:var(--transition);}
[data-theme="dark"] .newsletter-input{background:var(--bg-elevated);border-color:var(--border);color:var(--text-primary);}
.newsletter-input::placeholder{color:rgba(255,255,255,.45);}
.newsletter-input:focus{border-color:var(--brand-orange);}

/* FOOTER */
.footer-ac{background:var(--brand-navy);padding:72px 0 0;}
[data-theme="dark"] .footer-ac{background:var(--bg-card);border-top:1px solid var(--border);}
.footer-brand-name{font-family:var(--font-display);font-size:1.4rem;font-weight:700;color:#fff;}
.footer-brand-name span{color:var(--brand-orange);}
.footer-brand-sub{font-family:var(--font-mono);font-size:.6rem;color:var(--brand-orange);letter-spacing:.15em;text-transform:uppercase;display:block;}
.footer-desc{font-size:.86rem;color:rgba(255,255,255,.5);max-width:260px;line-height:1.7;}[data-theme="dark"] .footer-desc{color:var(--text-muted);}
.footer-heading{font-size:.72rem;font-family:var(--font-mono);letter-spacing:.2em;text-transform:uppercase;color:var(--brand-orange);margin-bottom:1.1rem;}
.footer-links{list-style:none;padding:0;}
.footer-links li{margin-bottom:9px;}.footer-links a{font-size:.86rem;color:rgba(255,255,255,.5);transition:var(--transition);}
.footer-links a:hover{color:var(--brand-orange);padding-left:4px;}[data-theme="dark"] .footer-links a{color:var(--text-muted);}
.social-icon{width:36px;height:36px;border:1px solid rgba(255,255,255,.15);border-radius:4px;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.45);font-size:1rem;transition:var(--transition);}
.social-icon:hover{border-color:var(--brand-orange);color:var(--brand-orange);background:var(--brand-orange-dim);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;margin-top:56px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;}
[data-theme="dark"] .footer-bottom{border-top-color:var(--border);}
.footer-bottom p{font-size:.77rem;color:rgba(255,255,255,.4);margin:0;}[data-theme="dark"] .footer-bottom p{color:var(--text-muted);}
.footer-bottom a{color:var(--brand-orange);}

/* FORM */
.form-field{width:100%;background:var(--bg-elevated);border:1.5px solid var(--border);border-radius:6px;color:var(--text-primary);font-family:var(--font-body);font-size:.9rem;padding:12px 15px;outline:none;transition:var(--transition);}
.form-field:focus{border-color:var(--brand-orange);background:var(--bg-card);}
.form-field::placeholder{color:var(--text-muted);}
.form-label{font-size:.77rem;color:var(--text-muted);letter-spacing:.1em;text-transform:uppercase;margin-bottom:7px;display:block;font-weight:600;}

/* REVEAL */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease;}
.reveal.revealed{opacity:1;transform:translateY(0);}
@keyframes fadeUp{from{opacity:0;transform:translateY(26px);}to{opacity:1;transform:translateY(0);}}
.animate-fadeup{animation:fadeUp .7s ease forwards;opacity:0;}
.anim-delay-1{animation-delay:.1s;}.anim-delay-2{animation-delay:.22s;}.anim-delay-3{animation-delay:.36s;}.anim-delay-4{animation-delay:.5s;}

/* STATS */
.stat-item{text-align:center;padding:24px 16px;}
.stat-number{font-family:var(--font-display);font-size:clamp(1.8rem,3.5vw,2.8rem);font-weight:900;color:var(--brand-orange);display:block;line-height:1;}
.stat-label{font-size:.73rem;letter-spacing:.12em;text-transform:uppercase;color:var(--text-muted);margin-top:5px;display:block;}

/* RESPONSIVE */
@media(max-width:991px){.navbar-ac .container-fluid{padding:0 18px;}.newsletter-form{flex-direction:column;}.newsletter-section{padding:36px 24px;}.section-pad{padding:68px 0;}.enroll-box{position:relative;top:0;}}
@media(max-width:767px){h1{font-size:1.85rem;}h2{font-size:1.55rem;}.footer-bottom{flex-direction:column;text-align:center;}}