:root{--bg:#030807;--black:#020403;--navy:#07111f;--deep-green:#062c2b;--green:#0f4f4c;--teal:#28c7c7;--light-teal:#7ddede;--soft-blue:#7fb8c8;--slate:#1d3442;--text:#f8fafc;--muted:#b7c7cc;--border:#7ddede29}*{box-sizing:border-box;margin:0;padding:0;font-family:Inter,Poppins,Arial,sans-serif}html{scroll-behavior:smooth}body{color:var(--text);background:radial-gradient(circle at 80% 20%,#28c7c72e,#0000 26%),radial-gradient(circle at 15% 85%,#0f4f4c47,#0000 30%),linear-gradient(135deg,#020403 0%,#07111f 45%,#062c2b 100%);overflow-x:hidden}a{text-decoration:none}img{max-width:100%;display:block}.premium-navbar{border:1px solid var(--border);-webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px);z-index:999;background:#02080cd1;border-radius:28px;justify-content:space-between;align-items:center;width:calc(100% - 80px);height:92px;margin:25px auto 0;padding:0 34px;display:flex;position:sticky;top:18px;box-shadow:0 25px 70px #00000073,0 0 40px #28c7c714}.brand{align-items:center;gap:15px;display:flex}.brand-img{object-fit:cover;border-radius:10px;width:58px;height:58px;box-shadow:0 0 24px #28c7c742,0 0 44px #7fb8c82e}.brand h2{background:linear-gradient(to right, #fff, var(--soft-blue), var(--teal));-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:32px;font-weight:900;line-height:1}.brand div>span{color:var(--soft-blue);letter-spacing:5px;font-size:13px;font-weight:800}.nav-links{align-items:center;gap:34px;display:flex}.nav-links a{color:var(--muted);font-weight:800;transition:all .3s;position:relative}.nav-links a:hover{color:#fff}.nav-links a:after{content:"";background:linear-gradient(to right, var(--teal), var(--soft-blue));width:0;height:2px;transition:all .3s;position:absolute;bottom:-9px;left:0}.nav-links a:hover:after{width:100%}.nav-actions{align-items:center;gap:14px;display:flex}.premium-login{cursor:pointer;border:none;border-radius:16px;padding:13px 20px;font-weight:900;transition:all .35s}.student-login-btn{color:#fff;background:#ffffff0f;border:1px solid #7fb8c838}.admin-login-btn{color:#fff;background:linear-gradient(135deg,#1d3442,#28c7c7);box-shadow:0 15px 35px #28c7c733}.premium-login:hover{transform:translateY(-4px)}.hero{align-items:center;gap:60px;min-height:88vh;padding:80px 60px;display:flex}.hero-left,.hero-right{flex:1}.hero-left h1{background:linear-gradient(to right, #fff, #bfefff, var(--teal));-webkit-text-fill-color:transparent;-webkit-background-clip:text;font-size:68px;line-height:1.08}.hero-left p{color:var(--muted);margin-top:22px;font-size:20px;line-height:1.7}.hero-right img{object-fit:cover;border:1px solid #7fb8c826;border-radius:30px;width:100%;height:430px;box-shadow:0 30px 80px #00000052,0 0 55px #28c7c724}.join-btn{cursor:pointer;color:#fff;background:linear-gradient(135deg,#0f4f4c,#28c7c7);border:none;border-radius:18px;margin-top:30px;padding:18px 34px;font-size:17px;font-weight:900;transition:all .35s;box-shadow:0 18px 45px #28c7c738,0 12px 35px #00000059}.join-btn:hover{transform:translateY(-5px)scale(1.03)}.section-header{text-align:center;max-width:780px;margin:0 auto 65px}.section-header span{color:var(--light-teal);background:#28c7c71a;border:1px solid #28c7c73d;border-radius:999px;margin-bottom:16px;padding:8px 18px;font-weight:900;display:inline-block}.section-header h1,.contact-heading h1{background:linear-gradient(to right, #fff, var(--soft-blue), var(--teal));-webkit-text-fill-color:transparent;-webkit-background-clip:text}.section-header h1{font-size:52px;line-height:1.15}.section-header p{color:var(--muted);margin-top:18px;font-size:18px;line-height:1.7}.premium-courses{padding:110px 60px}.premium-course-grid{grid-template-columns:repeat(3,1fr);gap:28px;display:grid}.premium-course-card{border:1px solid var(--border);background:radial-gradient(circle at 100% 0,#28c7c71f,#0000 35%),linear-gradient(#0f202aeb,#02080cfa);border-radius:28px;min-height:390px;padding:34px;transition:all .4s;position:relative;overflow:hidden;box-shadow:0 22px 60px #00000047}.premium-course-card:hover{border-color:#28c7c75c;transform:translateY(-14px);box-shadow:0 30px 80px #00000061,0 0 55px #28c7c721}.featured-course{border-color:#7fdede57}.course-top{z-index:2;justify-content:space-between;align-items:center;margin-bottom:32px;display:flex;position:relative}.course-icon{background:linear-gradient(135deg, var(--deep-green), var(--teal));border-radius:22px;justify-content:center;align-items:center;width:70px;height:70px;font-size:34px;display:flex;box-shadow:0 14px 35px #28c7c72e}.course-badge{color:#d9fbff;background:#7fb8c81a;border:1px solid #7fb8c838;border-radius:999px;padding:8px 14px;font-size:12px;font-weight:900}.premium-course-card h2{z-index:2;margin-bottom:18px;font-size:27px;position:relative}.premium-course-card p{color:var(--muted);z-index:2;line-height:1.8;position:relative}.course-points{z-index:2;flex-wrap:wrap;gap:12px;margin-top:30px;display:flex;position:relative}.course-points span{color:#bfffff;background:#28c7c714;border:1px solid #28c7c729;border-radius:999px;padding:9px 14px;font-size:13px;font-weight:800}.courses{padding:90px 60px}.courses h1{margin-bottom:35px;font-size:48px}.course-grid{grid-template-columns:repeat(3,1fr);gap:28px;display:grid}.course-card{border:1px solid var(--border);background:radial-gradient(circle at 100% 0,#7fb8c81f,#0000 35%),linear-gradient(#0f202ae6,#02080cfa);border-radius:26px;padding:34px;transition:all .35s}.course-card:hover{transform:translateY(-10px);box-shadow:0 25px 70px #28c7c71f}.course-card h2{color:var(--light-teal);margin-bottom:12px;font-size:26px}.course-card p{color:var(--muted);line-height:1.7}.rank-section{padding:110px 60px;position:relative}.rank-grid{z-index:2;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;display:grid;position:relative}.rank-card{border:1px solid var(--border);background:radial-gradient(circle at 100% 0,#28c7c71a,#0000 34%),linear-gradient(#0f202aeb,#02080cfa);border-radius:24px;padding:28px;transition:all .35s;position:relative;overflow:hidden;box-shadow:0 18px 50px #00000038}.rank-card:hover{transform:translateY(-12px);box-shadow:0 30px 75px #00000057,0 0 50px #28c7c71f}.rank-badge{color:#d9fbff;background:#7fb8c81a;border:1px solid #7fb8c838;border-radius:999px;padding:8px 14px;font-size:12px;font-weight:900;display:inline-block}.student-avatar{color:#020403;z-index:2;background:linear-gradient(135deg,#7fb8c8,#28c7c7);border-radius:22px;justify-content:center;align-items:center;width:72px;height:72px;margin-top:22px;margin-bottom:18px;font-size:22px;font-weight:900;display:flex;position:relative}.rank-card h2{z-index:2;margin-bottom:6px;font-size:22px;position:relative}.rank-course{color:var(--light-teal);z-index:2;font-weight:800;position:relative}.score-box{z-index:2;background:#0204038c;border:1px solid #7fb8c81f;border-radius:18px;margin:22px 0;padding:18px;position:relative}.score-box h3{color:var(--teal);font-size:28px}.score-box span{color:var(--muted);font-size:14px;font-weight:700}.rank-desc{color:var(--muted);z-index:2;font-size:14px;line-height:1.7;position:relative}.premium-contact{padding:100px 60px}.contact-heading{text-align:center;margin-bottom:60px}.contact-heading h1{margin-bottom:15px;font-size:55px}.contact-heading p{color:var(--muted);font-size:18px}.premium-contact-container{flex-wrap:wrap;justify-content:center;gap:30px;display:flex}.premium-contact-card{border:1px solid var(--border);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);background:radial-gradient(circle at 100% 0,#7fb8c81f,#0000 35%),linear-gradient(#0f202aeb,#02080cfa);border-radius:25px;width:280px;padding:35px 30px;transition:all .4s;position:relative;overflow:hidden}.premium-contact-card:hover{transform:translateY(-12px)scale(1.03);box-shadow:0 30px 75px #00000057,0 0 45px #28c7c71f}.contact-icon{background:linear-gradient(135deg, var(--deep-green), var(--teal));border-radius:20px;justify-content:center;align-items:center;width:70px;height:70px;margin-bottom:25px;font-size:32px;display:flex}.premium-contact-card h2{margin-bottom:10px;font-size:24px}.premium-contact-card p{color:var(--muted);line-height:1.7}.center{justify-content:center;align-items:center;min-height:100vh;display:flex}.card,.box{border:1px solid var(--border);background:#0f202adb;border-radius:24px;padding:35px}.card{flex-direction:column;gap:18px;width:400px;display:flex}.card input,.card select{color:#fff;background:#020403;border:none;border-radius:12px;outline:none;padding:15px}.card button{background:linear-gradient(135deg, var(--deep-green), var(--teal));color:#fff;border:none;border-radius:12px;padding:15px;font-weight:900}.dashboard{padding:40px}.grid{grid-template-columns:repeat(4,1fr);gap:25px;display:grid}@media (width<=1000px){.premium-navbar{flex-direction:column;gap:18px;width:calc(100% - 30px);height:auto;padding:18px}.nav-links,.nav-actions{flex-wrap:wrap;justify-content:center}.hero{text-align:center;flex-direction:column;padding:60px 22px}.hero-left h1{font-size:42px}.premium-courses,.courses,.rank-section,.premium-contact{padding:70px 22px}.premium-course-grid,.course-grid,.grid{grid-template-columns:1fr}.section-header h1,.contact-heading h1{font-size:38px}.premium-contact-card{width:100%}}section{scroll-margin-top:130px}