:root{
  --blue:#1450B4;
  --blue-dark:#0F3F94;
  --blue-mid:#1A5CC8;
  --blue-light:#E8EFFB;
  --blue-tint:#F4F7FD;
  --green:#00783C;
  --green-dark:#005A2D;
  --green-light:#E0F2E8;
  --green-tint:#F2F9F5;
  --ink:#0F1B2D;
  --ink-soft:#2A3548;
  --bg:#FAFAF7;
  --bg-soft:#F5F5F0;
  --white:#FFFFFF;
  --grey:#6B7280;
  --line:#E8E8E2;
  --line-soft:#F0F0EC;
  --r:0.75rem;
  --r2:1rem;
  --r3:1.5rem;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}

/* TYPE */
.display,.heading{font-family:'Poppins',sans-serif}
.display{font-weight:700}
.heading{font-weight:600}
.label{font-size:0.72rem;font-weight:600;letter-spacing:0.1em;text-transform:uppercase}

/* NAV */
nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(250,250,247,0.95);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--line);padding:0 5vw;height:70px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px}
.nav-logo img{height:46px;width:auto}
.nav-links{display:flex;align-items:center;gap:1.75rem}
.nav-links a{color:var(--ink);font-size:0.875rem;font-weight:500;transition:color 0.2s;position:relative;padding:0.5rem 0;white-space:nowrap}
.nav-links a:hover,.nav-links a.active{color:var(--blue)}
.nav-links a.active::after{content:'';position:absolute;bottom:-1px;left:0;right:0;height:2px;background:var(--blue);border-radius:2px}
.nav-right{display:flex;align-items:center;gap:0.75rem}
.lang-btn{background:var(--white);color:var(--ink);border:1px solid var(--line);padding:0.38rem 0.85rem;border-radius:2rem;font-size:0.78rem;font-weight:500;transition:all 0.2s;white-space:nowrap}
.lang-btn:hover{background:var(--ink);color:var(--white);border-color:var(--ink)}
.nav-cta{background:var(--blue);color:var(--white);border:none;padding:0.6rem 1.4rem;border-radius:2rem;font-size:0.875rem;font-weight:500;transition:all 0.2s;display:inline-block;white-space:nowrap}
.nav-cta:hover{background:var(--blue-dark);box-shadow:0 6px 18px rgba(20,80,180,0.3)}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;padding:4px;cursor:pointer}
.hamburger span{display:block;width:22px;height:2px;background:var(--ink);border-radius:2px;transition:all 0.3s}
.mobile-menu{display:none;position:fixed;top:70px;left:0;right:0;background:var(--white);border-bottom:1px solid var(--line);padding:1.5rem 5vw;z-index:99;flex-direction:column;gap:0.85rem;box-shadow:0 10px 30px rgba(0,0,0,0.08)}
.mobile-menu a{font-size:1rem;font-weight:500;padding:0.45rem 0;border-bottom:1px solid var(--line-soft)}
.mobile-menu a:last-child{border-bottom:none;color:var(--blue);font-weight:600}
.mobile-menu.open{display:flex}

/* BUTTONS */
.btn{display:inline-block;padding:0.85rem 1.85rem;border-radius:2rem;font-size:0.95rem;font-weight:500;text-align:center;transition:all 0.25s;border:none;cursor:pointer;font-family:inherit}
.btn-primary{background:var(--blue);color:var(--white)}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(20,80,180,0.25)}
.btn-secondary{background:var(--white);color:var(--ink);border:1.5px solid var(--ink)}
.btn-secondary:hover{background:var(--ink);color:var(--white)}
.btn-green{background:var(--green);color:var(--white)}
.btn-green:hover{background:var(--green-dark);transform:translateY(-2px)}
.btn-small{padding:0.5rem 1.25rem;font-size:0.82rem}
.btn-know-more{background:var(--blue);color:var(--white);padding:0.5rem 1.35rem;font-size:0.82rem;border-radius:2rem;display:inline-block;transition:all 0.2s;border:none;cursor:pointer;font-family:inherit}
.btn-know-more:hover{background:var(--blue-dark)}
.btn-white{background:var(--white);color:var(--blue);padding:0.95rem 2.5rem;border-radius:2rem;font-size:1rem;font-weight:600;display:inline-block;transition:all 0.2s}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,255,255,0.2)}

/* PAGE */
.page-content{padding-top:70px}
section{padding:5rem 5vw}

/* SECTION TITLES */
.section-label{color:var(--blue);margin-bottom:0.85rem}
.section-title{font-size:clamp(1.75rem,4vw,2.75rem);line-height:1.15;margin-bottom:1.25rem;color:var(--ink);letter-spacing:-0.02em}
.section-sub{font-size:1.05rem;color:var(--grey);max-width:620px;line-height:1.75}
.section-center{text-align:center;max-width:620px;margin:0 auto}

/* PAGE HERO */
.page-hero{background:linear-gradient(135deg,#F8FAFE 0%,#F3F9F5 100%);padding:5.5rem 5vw 4rem;text-align:center;position:relative;overflow:hidden;border-bottom:1px solid var(--line-soft)}
.page-hero::before{content:'';position:absolute;top:-200px;right:-150px;width:500px;height:500px;background:radial-gradient(circle,rgba(20,80,180,0.07) 0%,transparent 70%);border-radius:50%;pointer-events:none}
.page-hero::after{content:'';position:absolute;bottom:-200px;left:-150px;width:400px;height:400px;background:radial-gradient(circle,rgba(0,120,60,0.07) 0%,transparent 70%);border-radius:50%;pointer-events:none}
.page-hero>*{position:relative;z-index:1}
.page-hero .label{color:var(--blue);display:block;margin-bottom:1rem}
.page-hero h1{font-size:clamp(2rem,5vw,3.5rem);line-height:1.1;color:var(--ink);margin-bottom:1rem;letter-spacing:-0.025em}
.page-hero p{font-size:1.1rem;color:var(--ink-soft);max-width:600px;margin:0 auto;line-height:1.7}

/* COURSE CARD — gradient based, no images */
.ccard{background:var(--white);border-radius:var(--r3);overflow:hidden;border:1px solid var(--line);transition:all 0.3s;display:flex;flex-direction:column;cursor:default}
.ccard:hover{transform:translateY(-5px);box-shadow:0 20px 40px rgba(0,0,0,0.09);border-color:var(--blue)}
.ccard-top{padding:2.25rem 2rem;display:flex;flex-direction:column;align-items:flex-start;gap:1rem;position:relative;overflow:hidden;min-height:160px}
.ccard-top::after{content:'';position:absolute;bottom:-40px;right:-40px;width:140px;height:140px;border-radius:50%;opacity:0.15;pointer-events:none}
.ccard-icon{width:64px;height:64px;border-radius:1rem;display:flex;align-items:center;justify-content:center;font-size:2rem;background:rgba(255,255,255,0.85);flex-shrink:0;box-shadow:0 4px 12px rgba(0,0,0,0.08)}
.ccard-badge{display:inline-block;padding:0.3rem 0.8rem;border-radius:2rem;font-size:0.7rem;font-weight:700;letter-spacing:0.06em;text-transform:uppercase;background:rgba(255,255,255,0.9)}
.ccard-body{padding:1.25rem 1.5rem 1.5rem;flex:1;display:flex;flex-direction:column}
.ccard-name{font-family:'Poppins',sans-serif;font-weight:600;font-size:1rem;color:var(--ink);line-height:1.35;margin-bottom:0.6rem}
.ccard-desc{font-size:0.85rem;color:var(--grey);line-height:1.65;flex:1;margin-bottom:1.1rem}
.ccard-foot{display:flex;justify-content:space-between;align-items:center;padding-top:0.9rem;border-top:1px solid var(--line)}
.ccard-track{font-size:0.72rem;font-weight:600;text-transform:uppercase;letter-spacing:0.06em}

/* CATEGORY GRADIENTS */
.bg-elec{background:linear-gradient(135deg,#EBF2FF 0%,#D6E4FF 100%)}.bg-elec::after{background:var(--blue)}
.bg-ai{background:linear-gradient(135deg,#E8F8FF 0%,#CCF0FF 100%)}.bg-ai::after{background:#0876A3}
.bg-food{background:linear-gradient(135deg,#FFF3E8 0%,#FFE4CC 100%)}.bg-food::after{background:#C8671A}
.bg-biz{background:linear-gradient(135deg,#EDFBF2 0%,#CCF2DC 100%)}.bg-biz::after{background:var(--green)}
.bg-maker{background:linear-gradient(135deg,#FFF0F0 0%,#FFD6D6 100%)}.bg-maker::after{background:#B91C1C}
.bg-well{background:linear-gradient(135deg,#F5EEFF 0%,#E8D8FF 100%)}.bg-well::after{background:#7C3AED}
.bg-prog{background:linear-gradient(135deg,#FFFBEB 0%,#FEF3C7 100%)}.bg-prog::after{background:#B45309}
.bg-home{background:linear-gradient(135deg,#EDFBF2 0%,#D0F5E3 100%)}.bg-home::after{background:var(--green)}

/* BADGE COLOURS */
.bc-elec{color:var(--blue);background:rgba(20,80,180,0.12)}
.bc-ai{color:#0876A3;background:rgba(8,118,163,0.12)}
.bc-food{color:#C8671A;background:rgba(200,103,26,0.12)}
.bc-biz{color:var(--green);background:rgba(0,120,60,0.12)}
.bc-maker{color:#B91C1C;background:rgba(185,28,28,0.12)}
.bc-well{color:#7C3AED;background:rgba(124,58,237,0.12)}
.bc-prog{color:#B45309;background:rgba(180,83,9,0.12)}
.bc-home{color:var(--green);background:rgba(0,120,60,0.12)}
.tc-beginner{color:var(--blue)}.tc-pro{color:var(--green)}.tc-home{color:var(--green)}.tc-standalone{color:var(--grey)}

/* FOOTER */
footer{background:var(--ink);color:rgba(255,255,255,0.6);padding:3.5rem 5vw 2rem}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:3rem;margin-bottom:2.5rem}
.footer-logo{margin-bottom:1rem}
.footer-logo-card{display:inline-flex;align-items:center;background:#fff;border-radius:10px;padding:6px 10px;margin-bottom:1rem}.footer-logo-card img{height:44px;width:auto}
.footer-brand-desc{font-size:0.85rem;line-height:1.65;max-width:250px;color:rgba(255,255,255,0.55)}
.footer-col h4{color:var(--white);font-family:'Poppins',sans-serif;font-weight:600;font-size:0.9rem;margin-bottom:1rem}
.footer-col a{display:block;color:rgba(255,255,255,0.55);font-size:0.85rem;margin-bottom:0.55rem;transition:color 0.2s}
.footer-col a:hover{color:var(--white)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:1.75rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;font-size:0.82rem}
.footer-socials{display:flex;gap:1rem}
.footer-socials a{color:rgba(255,255,255,0.4);font-size:0.82rem;transition:color 0.2s}
.footer-socials a:hover{color:var(--white)}

/* LANG */
[data-lang]{display:none}
[data-lang="en"]{display:block}
span[data-lang="en"],a[data-lang="en"]{display:inline}
span[data-lang="ta"],a[data-lang="ta"]{display:none}
body.tamil [data-lang="en"]{display:none}
body.tamil [data-lang="ta"]{display:block}
body.tamil span[data-lang="en"],body.tamil a[data-lang="en"]{display:none}
body.tamil span[data-lang="ta"],body.tamil a[data-lang="ta"]{display:inline}

/* REVEAL */
.reveal{opacity:0;transform:translateY(24px);transition:opacity 0.65s ease,transform 0.65s ease}
.reveal.visible{opacity:1;transform:none}

/* MOBILE */
@media(max-width:900px){
  .nav-links{display:none}
  .hamburger{display:flex}
  .footer-grid{grid-template-columns:1fr 1fr;gap:2rem}
}
@media(max-width:600px){
  section{padding:3rem 5vw}
  .footer-grid{grid-template-columns:1fr}
  nav{padding:0 4vw}
  .nav-cta{padding:0.5rem 1rem;font-size:0.82rem}
}