@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&family=Inter:wght@400;500;600&display=swap');

:root{
  --primary:#4f46e5;
  --primary-dark:#3730a3;
  --primary-light:#818cf8;
  --accent:#f59e0b;
  --accent-dark:#d97706;
  --brand-red:#e11d2e;
  --brand-red-dark:#b91c1c;
  --bg:#f6f7fb;
  --card:#ffffff;
  --text:#1e2233;
  --muted:#6b7280;
  --border:#e6e8f0;
  --danger:#ef4444;
  --success:#10b981;
  --sidebar-bg:#161a2b;
  --sidebar-text:#aab0c6;
  --radius:14px;
  --radius-sm:9px;
  --shadow-sm:0 1px 3px rgba(20,20,50,.06);
  --shadow-md:0 8px 24px rgba(30,30,80,.08);
  --shadow-lg:0 20px 50px rgba(30,30,80,.14);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;font-family:'Inter',Arial,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;}
h1,h2,h3,h4{font-family:'Poppins',sans-serif;color:var(--text);margin:0 0 12px;}
h1{font-size:clamp(24px,4vw,32px);font-weight:700;}
h2{font-size:clamp(19px,3vw,24px);font-weight:600;}
h3{font-size:18px;font-weight:600;}
a{text-decoration:none;color:inherit;}
.container{max-width:1180px;margin:0 auto;padding:0 20px;}
img{max-width:100%;}

/* ============ Header / Nav ============ */
.site-header{
  background:linear-gradient(120deg,var(--primary),var(--primary-dark));
  position:sticky;top:0;z-index:100;box-shadow:0 2px 12px rgba(30,30,80,.15);
}
.header-inner{display:flex;justify-content:space-between;align-items:center;height:68px;}
.logo{font-family:'Poppins',sans-serif;font-size:22px;font-weight:700;color:#fff;letter-spacing:.3px;}
.logo span{color:var(--accent);}
.site-header nav{display:flex;align-items:center;gap:6px;}
.site-header nav a{color:rgba(255,255,255,.88);font-weight:500;font-size:15px;padding:9px 16px;border-radius:8px;transition:.2s;}
.site-header nav a:hover{background:rgba(255,255,255,.14);color:#fff;}
.site-header nav a.nav-cta{background:var(--accent);color:#1f2937;font-weight:600;}
.site-header nav a.nav-cta:hover{background:var(--accent-dark);}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;color:#fff;}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:'';display:block;width:24px;height:2px;background:#fff;border-radius:2px;position:relative;transition:.25s;
}
.nav-toggle span::before{position:absolute;top:-7px;}
.nav-toggle span::after{position:absolute;top:7px;}

@media(max-width:820px){
  .nav-toggle{display:block;}
  .site-header nav{
    position:fixed;top:68px;left:0;right:0;background:var(--primary-dark);
    flex-direction:column;align-items:stretch;gap:0;max-height:0;overflow:hidden;
    transition:max-height .3s ease;box-shadow:var(--shadow-md);
  }
  .site-header nav.open{max-height:400px;}
  .site-header nav a{padding:14px 22px;border-radius:0;border-bottom:1px solid rgba(255,255,255,.08);}
}

main{min-height:70vh;padding:36px 0 60px;}
.site-footer{background:var(--sidebar-bg);color:#8b90a8;text-align:center;padding:22px 0;margin-top:50px;font-size:14px;}
.site-footer a{color:#c7cbe0;}

/* ============ Cards / Buttons ============ */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);}
.grid{display:grid;gap:22px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
@media(max-width:900px){.grid-3{grid-template-columns:repeat(2,1fr);}}
@media(max-width:640px){.grid-3,.grid-2{grid-template-columns:1fr;}}

label{display:block;margin:14px 0 6px;font-weight:600;font-size:14px;color:var(--text);}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=file],
input[type=datetime-local],select,textarea{
  width:100%;padding:12px 14px;border:1.5px solid var(--border);border-radius:var(--radius-sm);
  font-size:15px;font-family:inherit;background:#fbfbfe;transition:.2s;
}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);background:#fff;box-shadow:0 0 0 4px rgba(79,70,229,.1);}
textarea{resize:vertical;min-height:90px;}

button,.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  background:var(--primary);color:#fff;border:none;padding:12px 24px;
  border-radius:var(--radius-sm);font-size:15px;font-weight:600;cursor:pointer;margin-top:18px;
  transition:.2s;font-family:inherit;box-shadow:0 4px 14px rgba(79,70,229,.25);
}
button:hover,.btn:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 6px 18px rgba(79,70,229,.32);}
.btn-accent{background:var(--accent);color:#1f2937;box-shadow:0 4px 14px rgba(245,158,11,.3);}
.btn-accent:hover{background:var(--accent-dark);}
.btn-danger{background:var(--danger);box-shadow:0 4px 14px rgba(239,68,68,.25);}
.btn-success{background:var(--success);box-shadow:0 4px 14px rgba(16,185,129,.25);}
.btn-outline{background:transparent;border:1.5px solid var(--primary);color:var(--primary);box-shadow:none;}
.btn-outline:hover{background:var(--primary);color:#fff;}
.btn-sm{padding:8px 16px;font-size:13px;margin-top:0;}
.btn-block{width:100%;}

.alert{padding:13px 18px;border-radius:var(--radius-sm);margin-bottom:18px;font-size:14px;font-weight:500;}
.alert-error{background:#fef2f2;color:var(--danger);border:1px solid #fecaca;}
.alert-success{background:#ecfdf5;color:var(--success);border:1px solid #a7f3d0;}

/* ============ Auth pages (split layout) ============ */
.auth-wrap{display:flex;min-height:calc(100vh - 68px - 70px);align-items:center;justify-content:center;padding:30px 0;}
.auth-box{max-width:440px;width:100%;margin:0 auto;}
.auth-box .card{padding:36px 32px;}
.auth-icon{
  width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-light));
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:24px;font-weight:700;margin:0 auto 16px;
}
.auth-box h2{text-align:center;}
.auth-sub{text-align:center;color:var(--muted);font-size:14px;margin-bottom:6px;}
.auth-links{margin-top:18px;text-align:center;font-size:14px;color:var(--muted);}
.auth-links a{color:var(--primary);font-weight:600;}
.otp-inputs{display:flex;gap:10px;justify-content:center;margin-top:10px;}
.otp-inputs input{width:46px;height:54px;text-align:center;font-size:22px;font-weight:700;padding:0;}

/* ============ Course / content cards ============ */
.course-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:.25s;box-shadow:var(--shadow-sm);}
.course-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.course-card img{width:100%;height:170px;object-fit:cover;background:#e5e7eb;display:block;}
.course-card .body{padding:18px;}
.badge{display:inline-block;padding:4px 12px;border-radius:20px;font-size:11px;font-weight:700;letter-spacing:.3px;}
.badge-free{background:#d1fae5;color:#047857;}
.badge-paid{background:#fef3c7;color:#b45309;}

/* ============ Tables (responsive -> cards on mobile) ============ */
.table-wrap{overflow-x:auto;border-radius:var(--radius);box-shadow:var(--shadow-sm);}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;}
th,td{padding:13px 16px;border-bottom:1px solid var(--border);text-align:left;font-size:14px;}
th{background:#f3f4f9;font-weight:600;color:var(--muted);text-transform:uppercase;font-size:12px;letter-spacing:.4px;}
tr:hover td{background:#fafbff;}

/* ============ Exam / Timer ============ */
.timer-box{
  position:sticky;top:80px;background:linear-gradient(120deg,var(--danger),#dc2626);color:#fff;padding:14px;
  text-align:center;font-size:22px;font-weight:700;border-radius:var(--radius-sm);margin-bottom:22px;z-index:10;
  box-shadow:0 6px 18px rgba(239,68,68,.3);
}
.question-block{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:16px;box-shadow:var(--shadow-sm);}
.option-row{padding:10px 14px;border-radius:var(--radius-sm);cursor:pointer;display:flex;align-items:center;gap:10px;transition:.15s;}
.option-row:hover{background:#f3f4fd;}
.option-row input{width:auto;}

/* ============ Admin layout ============ */
.admin-wrap{display:flex;min-height:100vh;}
.admin-sidebar{
  width:250px;background:var(--sidebar-bg);color:#fff;flex-shrink:0;position:fixed;top:0;left:0;bottom:0;
  overflow-y:auto;z-index:200;transition:transform .3s ease;
}
.admin-sidebar a{display:flex;align-items:center;gap:10px;padding:13px 22px;color:var(--sidebar-text);font-size:14px;font-weight:500;transition:.15s;}
.admin-sidebar a:hover,.admin-sidebar a.active{background:var(--primary);color:#fff;}
.admin-sidebar .brand{padding:22px;font-family:'Poppins',sans-serif;font-weight:700;font-size:18px;border-bottom:1px solid rgba(255,255,255,.08);color:#fff;}
.admin-sidebar .brand span{color:var(--accent);}
.admin-content{flex:1;padding:28px 30px;margin-left:250px;max-width:calc(100% - 250px);}
.admin-topbar{display:none;}

@media(max-width:900px){
  .admin-sidebar{transform:translateX(-100%);}
  .admin-sidebar.open{transform:translateX(0);}
  .admin-content{margin-left:0;max-width:100%;padding:20px;}
  .admin-topbar{
    display:flex;align-items:center;justify-content:space-between;background:#fff;
    padding:14px 18px;border-radius:var(--radius-sm);margin-bottom:20px;box-shadow:var(--shadow-sm);
  }
  .admin-topbar button{margin:0;padding:8px 14px;}
  .sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:150;}
  .sidebar-overlay.show{display:block;}
}

.top-actions{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:22px;}
.qr-box{text-align:center;padding:26px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);}
.stat-card{background:linear-gradient(135deg,#fff,#f7f8ff);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);}
.stat-card h2{font-size:32px;color:var(--primary);margin-bottom:4px;}
.stat-card p{color:var(--muted);margin:0;font-size:14px;}

@media(max-width:640px){
  table thead{display:none;}
  table,tbody,tr,td{display:block;width:100%;}
  tr{background:#fff;margin-bottom:14px;border-radius:var(--radius-sm);box-shadow:var(--shadow-sm);overflow:hidden;}
  td{border:none;border-bottom:1px solid var(--border);padding:10px 14px;display:flex;justify-content:space-between;gap:10px;text-align:right;}
  td:last-child{border-bottom:none;}
  td::before{content:attr(data-label);font-weight:600;color:var(--muted);text-align:left;}
}

/* ================================================================
   MARKETING SITE (guest/public pages) - EdJEE style red theme
   ================================================================ */
.topbar{background:#1a1a2e;color:#c9cbe0;font-size:12.5px;padding:7px 0;}
.topbar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:6px;}
.topbar a{color:#c9cbe0;}
.topbar .topbar-social a{margin-left:12px;color:#fff;}

.site-header{background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.06);}
.site-header .logo{color:var(--brand-red);}
.site-header .logo span{color:var(--text);}
.site-header nav a{color:var(--text);}
.site-header nav a:hover{background:#fdecea;color:var(--brand-red);}
.site-header nav a.nav-cta{background:var(--brand-red);color:#fff;}
.site-header nav a.nav-cta:hover{background:var(--brand-red-dark);}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{background:var(--text);}
@media(max-width:820px){.site-header nav{background:#fff;box-shadow:var(--shadow-md);} .site-header nav a{color:var(--text);border-bottom:1px solid var(--border);}}

.hero-section{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center;padding:50px 0;}
@media(max-width:900px){.hero-section{grid-template-columns:1fr;}}
.hero-section h1{font-size:clamp(28px,4.5vw,44px);line-height:1.15;margin-bottom:16px;}
.hero-section h1 .accent{color:var(--brand-red);}
.hero-section p{color:var(--muted);font-size:16px;margin-bottom:22px;line-height:1.7;}
.hero-img{border-radius:20px;overflow:hidden;box-shadow:var(--shadow-lg);}
.hero-img img{width:100%;display:block;}
.btn-red{background:var(--brand-red);box-shadow:0 4px 14px rgba(225,29,46,.3);}
.btn-red:hover{background:var(--brand-red-dark);}

.feature-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px;}
@media(max-width:800px){.feature-strip{grid-template-columns:1fr;}}
.feature-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;display:flex;gap:14px;box-shadow:var(--shadow-sm);}
.feature-icon{width:44px;height:44px;flex-shrink:0;border-radius:12px;background:#fdecea;color:var(--brand-red);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;}
.feature-item h4{margin:0 0 4px;font-size:15px;}
.feature-item p{margin:0;font-size:13px;color:var(--muted);}

.section{padding:56px 0;}
.section-alt{background:#f7f4f2;}
.section-tag{color:var(--brand-red);font-weight:700;font-size:13px;letter-spacing:.5px;text-transform:uppercase;text-align:center;display:block;margin-bottom:6px;}
.section-title{text-align:center;font-size:clamp(22px,3.5vw,30px);margin-bottom:8px;}
.section-sub{text-align:center;color:var(--muted);max-width:560px;margin:0 auto 34px;font-size:14.5px;}

.category-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
@media(max-width:800px){.category-cards{grid-template-columns:1fr;}}
.category-card{border-radius:var(--radius);overflow:hidden;position:relative;height:190px;box-shadow:var(--shadow-md);}
.category-card img{width:100%;height:100%;object-fit:cover;}
.category-card .cat-label{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(0deg,rgba(0,0,0,.75),transparent);color:#fff;padding:16px;font-weight:700;font-size:16px;}

.testimonial-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);}
.testimonial-card .stars{color:var(--accent);margin-bottom:10px;}
.testimonial-card p{font-style:italic;color:var(--muted);margin-bottom:16px;font-size:14.5px;}
.testimonial-name{font-weight:700;font-size:14px;}
.testimonial-role{font-size:12.5px;color:var(--muted);}

.cta-split{display:grid;grid-template-columns:1fr 1fr;gap:22px;}
@media(max-width:700px){.cta-split{grid-template-columns:1fr;}}
.cta-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px;text-align:center;box-shadow:var(--shadow-sm);}
.cta-box .feature-icon{margin:0 auto 14px;width:56px;height:56px;font-size:24px;border-radius:50%;}

.site-footer-v2{background:#161a2b;color:#9497b0;padding:50px 0 20px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px;margin-bottom:30px;}
@media(max-width:800px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:500px){.footer-grid{grid-template-columns:1fr;}}
.site-footer-v2 h4{color:#fff;font-size:15px;margin-bottom:14px;}
.site-footer-v2 a{color:#9497b0;display:block;margin-bottom:8px;font-size:13.5px;}
.site-footer-v2 a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:18px;text-align:center;font-size:12.5px;}
.footer-newsletter input{margin-bottom:10px;}

/* ================================================================
   COLORFUL DASHBOARD STAT CARDS (student + admin)
   ================================================================ */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
@media(max-width:1000px){.stat-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:520px){.stat-grid{grid-template-columns:1fr;}}
.stat-tile{border-radius:var(--radius);padding:20px 22px;color:#fff;box-shadow:var(--shadow-md);position:relative;overflow:hidden;}
.stat-tile .stat-icon{width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,.22);display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:14px;}
.stat-tile h2{color:#fff;font-size:28px;margin:0 0 2px;}
.stat-tile p{margin:0;font-size:13px;opacity:.92;}
.stat-teal{background:linear-gradient(135deg,#14b8a6,#0f766e);}
.stat-purple{background:linear-gradient(135deg,#8b5cf6,#6d28d9);}
.stat-orange{background:linear-gradient(135deg,#fb923c,#ea580c);}
.stat-blue{background:linear-gradient(135deg,#3b82f6,#1d4ed8);}
.stat-pink{background:linear-gradient(135deg,#ec4899,#be185d);}

.panel-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);}
.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;}
.panel-head h3{margin:0;}

/* ================================================================
   MOBILE APP-LIKE BOTTOM NAVIGATION (student area, mobile only)
   ================================================================ */
.mobile-bottom-nav{display:none;}
@media(max-width:820px){
  .mobile-bottom-nav{
    display:flex;position:fixed;bottom:0;left:0;right:0;z-index:300;
    background:#fff;border-top:1px solid var(--border);box-shadow:0 -4px 16px rgba(0,0,0,.08);
    padding:6px 0 max(6px,env(safe-area-inset-bottom));
  }
  .mobile-bottom-nav a{
    flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;
    padding:6px 2px;color:var(--muted);font-size:11px;font-weight:600;
  }
  .mobile-bottom-nav a.active{color:var(--primary);}
  .mobile-bottom-nav .nav-dot{width:22px;height:22px;border-radius:50%;background:#f1f2f9;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;}
  .mobile-bottom-nav a.active .nav-dot{background:var(--primary);color:#fff;}
  .admin-content{padding-bottom:74px;}
}

/* ================================================================
   PAID VIDEO PROTECTION - watermark + no-select wrapper
   ================================================================ */
.video-wrap{position:relative;border-radius:10px;overflow:hidden;background:#000;}
.video-wrap iframe{display:block;width:100%;height:220px;border:0;}
.video-watermark{
  position:absolute;top:8px;right:10px;background:rgba(0,0,0,.55);color:#fff;
  font-size:11px;padding:3px 9px;border-radius:20px;pointer-events:none;user-select:none;z-index:5;
  font-family:'Inter',sans-serif;
}
.locked-video{
  background:#111827;color:#cbd5e1;border-radius:10px;padding:40px 20px;text-align:center;
}
.locked-video .lock-icon{font-size:30px;margin-bottom:10px;}

/* ================================================================
   CONTACT PAGE
   ================================================================ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:start;}
@media(max-width:820px){.contact-grid{grid-template-columns:1fr;}}
.contact-info-item{display:flex;gap:14px;align-items:flex-start;margin-bottom:18px;}
.contact-info-item .feature-icon{flex-shrink:0;}
.map-frame{width:100%;height:260px;border:0;border-radius:var(--radius);margin-top:18px;}

/* ================================================================
   ABOUT PAGE
   ================================================================ */
.about-hero{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;}
@media(max-width:820px){.about-hero{grid-template-columns:1fr;}}
.value-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px;text-align:center;box-shadow:var(--shadow-sm);}