/* ===== RESET ===== */
*{
  margin:0;
  padding:0;
  box-sizing:border-box;
  font-family:'Segoe UI',sans-serif;
}

body{
  background:#f5f7fb;
  color:#111;
  line-height:1.6;
}

/* ===== NAVBAR ===== */
.navbar{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:14px 25px;
  background:white;
  border-bottom:1px solid #e5e7eb;
}

.navbar h1{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:20px;
  font-weight:700;
}

.logo{
  height:32px;
}

.navbar div{
  display:flex;
  gap:18px;
}

.navbar a{
  text-decoration:none;
  color:#444;
  font-weight:500;
}

.navbar a:hover{
  color:#6366f1;
}

/* ===== HERO ===== */
.hero{
  text-align:center;
  padding:80px 20px;
  background:linear-gradient(to bottom,#ffffff,#eef2f7);
}

.bg-logo{
  width:120px;
  opacity:0.1;
  position:absolute;
  left:50%;
  transform:translateX(-50%);
}

.hero h1{
  font-size:42px;
  font-weight:900;
}

.hero p{
  margin-top:10px;
  color:#6b7280;
}

/* ===== SEARCH ===== */
.search-box{
  margin-top:20px;
}

.search-box input{
  width:90%;
  max-width:450px;
  padding:14px;
  border-radius:30px;
  border:1px solid #e5e7eb;
  outline:none;
}

.suggestions{
  margin-top:5px;
  background:white;
  border:1px solid #ddd;
  border-radius:10px;
}

/* ===== CATEGORY ===== */
.categories{
  text-align:center;
  padding:50px 20px;
}

.categories h2{
  margin-bottom:20px;
  font-size:24px;
}
.categories p{
  color: #000000;
  font-size: larger;
}

/* FIX DOUBLE CAT BOX */
.cat-box{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:12px;
}

/* BUTTON */
.cat{
  padding:10px 18px;
  border-radius:999px;
  border:1px solid #e5e7eb;
  background:white;
  cursor:pointer;
  transition:0.2s;
}

.cat:hover{
  background:#6366f1;
  color:white;
}

.cat.active{
  background:#6366f1;
  color:white;
}

/* ===== SUBJECT ===== */
.subjects{
  display:none;
  margin-top:15px;
}

.subjects.active{
  display:block;
}

/* ===== CARD ===== */
.card{
  width:90%;
  max-width:450px;
  margin:15px auto;
  padding:18px;

  background:white;
  border-radius:12px;
  border:1px solid #e5e7eb;

  cursor:pointer;
  transition:0.2s;
}

.card:hover{
  transform:translateY(-4px);
  box-shadow:0 10px 20px rgba(0,0,0,0.08);
}

.card h3{
  font-size:18px;
  font-weight:600;
}

/* ===== BUTTON ===== */
.btn-box{
  display:flex;
  justify-content:center;
  gap:10px;
  flex-wrap:wrap;
  margin-top:10px;
}

.btn{
  padding:8px 14px;
  border-radius:8px;
  border:none;
  color:white;
  cursor:pointer;
}

.pdf-btn{
  background: linear-gradient(135deg, #ff6a00, #ee0979);  /* 🔥 new color */
  color: white;
}

.info-btn{
  background:#6366f1;
}

/* ===== NOTE ===== */
.note-content{
  display:none;
}

.note-content.active{
  display:block;
}

/* ===== IMAGE ===== */
.note-img{
  width:100%;
  border-radius:10px;
  margin-top:10px;
}

/* ===== POPUP ===== */



/* ===== CONTACT ===== */
#contact{
  text-align:center;
  padding:40px;
}

/* ===== FOOTER ===== */
footer{
  text-align:center;
  padding:20px;
  border-top:1px solid #ffffff;
  background:rgb(255, 254, 254);
}

/* ===== MOBILE ===== */
@media(max-width:600px){

  .navbar{
    flex-direction:column;
    gap:10px;
  }

  .btn-box{
    flex-direction:column;
  }

  .btn{
    width:100%;
  }

}
/* ===== SMOOTH FADE ANIMATION ===== */
.fade-up{
  opacity:0;
  transform:translateY(30px);
  transition:all .6s ease;
}
.fade-up.show{
  opacity:1;
  transform:translateY(0);
}

/* ===== HERO LOGO FLOAT ===== */
.bg-logo{
  position:absolute;
  top:50%;
  left:50%;
  transform:translate(-50%,-50%);
  width:160px;
  opacity:0.05;
  animation:float 6s ease-in-out infinite;
}
@keyframes float{
  0%,100%{ transform:translate(-50%,-50%) translateY(0);}
  50%{ transform:translate(-50%,-50%) translateY(-10px);}
}

/* ===== CARD PREMIUM EFFECT ===== */
.card{
  position:relative;
  overflow:hidden;
}

.card::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(120deg,transparent,rgba(99,102,241,0.15),transparent);
  opacity:0;
  transition:0.3s;
}

.card:hover::before{
  opacity:1;
}

/* ===== BUTTON GLOW ===== */
.btn{
  position:relative;
  overflow:hidden;
}

.btn::after{
  content:"";
  position:absolute;
  top:0;
  left:-100%;
  width:100%;
  height:100%;
  background:linear-gradient(120deg,transparent,rgba(255,255,255,0.4),transparent);
  transition:0.4s;
}

.btn:hover::after{
  left:100%;
}

/* ===== CATEGORY HOVER EFFECT ===== */
.cat{
  position:relative;
}

.cat::after{
  content:"";
  position:absolute;
  bottom:-4px;
  left:50%;
  width:0%;
  height:2px;
  background:#6366f1;
  transition:.3s;
  transform:translateX(-50%);
}

.cat:hover::after{
  width:60%;
}

/* ===== SEARCH FOCUS GLOW ===== */
.search-box input:focus{
  box-shadow:0 0 0 3px rgba(99,102,241,0.15);
}

/* ===== SCROLLBAR STYLE ===== */
::-webkit-scrollbar{
  width:6px;
}
::-webkit-scrollbar-thumb{
  background:#6366f1;
  border-radius:10px;
}
/* =========================
   🎯 SUBJECT CENTER FIX
========================= */
.subjects{
  text-align:center;
  width:100%;
}

.subjects p{
  display:block;
  text-align:center;
  margin:6px 0;
}

/* =========================
   🎯 CLASS BUTTON ALIGN FIX
========================= */
.cat-box{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap:12px;
}

/* =========================
   🎯 CARD CENTER FIX
========================= */
.card{
  margin-left:auto;
  margin-right:auto;
}

/* =========================
   🎯 LOGO IMPROVE
========================= */
.navbar{
  background:#f8fafc;
}

.logo{
  height:40px;   /* पहले 30 था */
  width:auto;
}

/* =========================
   🎯 HERO LOGO STYLE
========================= */
.bg-logo{
  width:150px;
  opacity:0.08;
}

/* =========================
   🎯 CLASS 12 LEFT FIX
========================= */
#c12{
  text-align:center;
  
}

#c12 p{
  text-align:center;
}

/* =========================
   🎯 CLASS 10 FIX
========================= */
#c10{
  text-align:center;
  
}

/* =========================
   🎯 EXTRA CLEAN SPACING
========================= */
.categories{
  padding:40px 20px;
}

.categories h2{
  text-align:center;
  margin-bottom:20px;
}

/* =========================
   🔥 HERO PREMIUM LOOK
========================= */
.hero{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;

  text-align:center;
  padding:100px 20px;

  background:linear-gradient(135deg,#ffffff,#eef2ff);
  position:relative;
  overflow:hidden;
}

/* =========================
   🔥 TITLE GRADIENT
========================= */
.hero h1{
  font-size:48px;
  font-weight:900;
  margin-bottom:10px;

  background:linear-gradient(90deg,#6366f1,#9333ea);
  background-clip:text;
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
}

/* =========================
   🔥 SUBTEXT
========================= */
.hero p{
  font-size:16px;
  color:#6b7280;
  margin-bottom:25px;
}

/* =========================
   🔥 SEARCH GLASS STYLE
========================= */
.search-box input{
  background:rgba(255,255,255,0.8);
  backdrop-filter:blur(10px);

  border-radius:30px;
  padding:14px 18px;
  border:1px solid #e5e7eb;

  box-shadow:0 8px 20px rgba(0,0,0,0.05);
}

/* =========================
   🔥 FLOATING BACKGROUND LOGO
========================= */
.bg-logo{
  position:absolute;
  top:50%;
  left:50%;
  transform:translate(-50%,-50%);
  width:160px;
  opacity:0.05;
  animation:float 6s ease-in-out infinite;
}

/* FLOAT ANIMATION */
@keyframes float{
  0%,100%{ transform:translate(-50%,-50%) translateY(0);}
  50%{ transform:translate(-50%,-50%) translateY(-12px);}
}

/* =========================
   🔥 HERO GLOW EFFECT
========================= */
.hero::before{
  content:"";
  position:absolute;
  width:300px;
  height:300px;
  background:rgba(99,102,241,0.15);
  filter:blur(100px);
  top:20%;
  left:20%;
}

.hero::after{
  content:"";
  position:absolute;
  width:300px;
  height:300px;
  background:rgba(147,51,234,0.15);
  filter:blur(100px);
  bottom:20%;
  right:20%;
}
.subjects{
  display:none;
}

.subjects.active{
  display:block;
}

.note-content{
  display:none;
}

.note-content.active{
  display:block;
}
.dark-mode{
  background:#020617;
  color:white;
}
/* 🔥 SEARCH ALWAYS CLICKABLE */
.search-box{
  position:relative;
  z-index:9999;
}

/* input ko top pe lao */
.search-box input{
  position:relative;
  z-index:10000;
}

/* suggestions */
.suggestions{
  position:absolute;
  width:100%;
  background:white;
  z-index:10000;
}

/* 🔥 mobile touch fix */
input, button{
  pointer-events:auto;
}

/* 🔥 prevent overlap issues */
.hero, .card, section{
  position:relative;
  z-index:1;
}
/* ===== FINAL OVERLAY KILL FIX ===== */

.note-content{
  position: static !important;
  display: none !important;
  width: 100% !important;
  margin: 10px 0 !important;
  z-index: 1 !important;
  transform: none !important;
}

/* show */
.note-content.active{
  display: block !important;
}

/* subjects */
.subjects{
  position: static !important;
  
}

/* 🔥 IMPORTANT: card parent fix */
.card{
  position: relative !important;
}

/* 🔥 remove center floating */
.note-content,
.card{
  left: auto !important;
  top: auto !important;
}

/* 🔥 search always top */
.search-box{
  position: relative;
  z-index: 99999 !important;
}
/* ONLY ONE NOTE OPEN AT A TIME (visual fix) */
.note-content{
  display:none;
}

.note-content.active{
  display:block;
}

/* card stable */
.card{
  position:relative;
  overflow:visible;
}

.sub-text{
  color:#6b7280;
  font-size:14px;
  margin-top:5px;
}
.cat-box{
  display:flex;
  justify-content:center;
  gap:10px;
  flex-wrap:wrap;
  margin-top:15px;
}

.cat{
  padding:10px 18px;
  border-radius:30px;
  border:1px solid #e5e7eb;
  background:#f9fafb;
  cursor:pointer;
  transition:0.3s;
  font-weight:500;
}

/* hover */
.cat:hover{
  background:#eef2ff;
  transform:translateY(-2px);
}

/* active (🔥 main look) */
.cat.active{
  background:linear-gradient(135deg,#6366f1,#9333ea);
  color:white;
  border:none;
  box-shadow:0 6px 15px rgba(99,102,241,0.4);
}

/* ===== TITLE ===== */
.class-title{
  text-align:center;
  font-size:28px;
  font-weight:800;
  margin-top:30px;
}

/* subtitle */
.sub-text{
  text-align:center;
  color:#6b7280;
  font-size:14px;
  margin-bottom:15px;
}

/* ===== CLASS BOX ===== */
.cat-box{
  display:flex;
  justify-content:center;
  gap:12px;
  flex-wrap:wrap;
}

/* ===== BUTTON STYLE ===== */
.cat{
  padding:10px 18px;
  border-radius:30px;
  background:#f3f4f6;
  border:1px solid #e5e7eb;
  cursor:pointer;
  transition:all 0.25s ease;
  font-weight:500;
}

/* hover effect */
.cat:hover{
  transform:translateY(-3px);
  background:#eef2ff;
}

/* active class (🔥 main look) */
.cat.active{
  background:linear-gradient(135deg,#6366f1,#9333ea);
  color:white;
  border:none;
  box-shadow:0 6px 20px rgba(99,102,241,0.4);
}

/* click effect */
.cat:active{
  transform:scale(0.95);
}

/* NORMAL BUTTON */
.cat{
    background:linear-gradient(45deg,#ff00cc,#6a00ff);
    color:white;
    padding:12px 22px;
    margin:10px;
    border-radius:12px;
    font-weight:bold;
    cursor:pointer;
    transition:0.3s;
    box-shadow:0 0 15px rgba(128,0,255,0.5);
}

.cat:hover{
    transform:scale(1.08);
}
/* ACTIVE (same for all) */
/* ACTIVE CLASS (Class 11 selected) */
.cat.active{
    background:linear-gradient(45deg,#ff00cc,#6a00ff);
    color:white;
    box-shadow:0 0 15px rgba(128,0,255,0.5);
}

/* 🔥 NOTE FIX (NO POPUP) */
.note-content{
  position: relative !important;
  top: auto !important;
  left: auto !important;
  transform: none !important;

  width: 100% !important;
  margin: 10px 0 !important;

  display: none;
  z-index: 1;
}

/* show properly */
.note-content.active{
  display: block !important;
}

/* card normal flow */
.card{
  position: relative !important;
  overflow: visible !important;
}

/* subjects fix */
.subjects{
  position: relative !important;
}

/* ===== ABOUT PAGE ===== */
.about-container{
  max-width:900px;
  margin:40px auto;
  padding:25px;
  background:#ffffff;
  border-radius:12px;
  box-shadow:0 10px 30px rgba(0,0,0,0.08);
}

/* heading */
.about-container h1{
  text-align:center;
  font-size:32px;
  margin-bottom:15px;
}

/* section titles */
.about-container h2{
  margin-top:25px;
  color:#6366f1;
}

/* paragraph */
.about-container p{
  color:#444;
  margin-top:8px;
}

/* list */
.about-container ul{
  margin-top:10px;
  padding-left:20px;
}

.about-container li{
  margin-bottom:5px;
}

/* divider */
.about-container hr{
  margin:20px 0;
  border:none;
  height:1px;
  background:#e5e7eb;
}

/* email link */
.about-container a{
  color:#6366f1;
  text-decoration:none;
}

.about-container a:hover{
  text-decoration:underline;
}

/* mobile responsive */
@media(max-width:600px){
  .about-container{
    margin:20px;
    padding:15px;
  }

  .about-container h1{
    font-size:24px;
  }
}
.about-container{
  transition:0.3s;
}

.about-container:hover{
  transform:translateY(-5px);
}
/* ===== ABOUT SECTION ===== */
.about-container{
  max-width:900px;
  margin:60px auto;
  padding:30px;
  background:#ffffff;
  border-radius:16px;
  box-shadow:0 15px 40px rgba(0,0,0,0.08);
  line-height:1.7;
}

/* heading */
.about-container h1{
  text-align:center;
  font-size:34px;
  margin-bottom:15px;
}

/* intro text */
.about-intro{
  text-align:center;
  font-size:18px;
  color:#444;
}

/* description */
.about-desc{
  text-align:center;
  font-size:16px;
  margin-top:10px;
}

/* section headings */
.about-container h2{
  margin-top:30px;
  color:#6366f1;
}

/* list */
.about-container ul{
  margin-top:10px;
  padding-left:20px;
}

.about-container li{
  margin-bottom:6px;
}

/* divider */
.about-container hr{
  margin:25px 0;
  border:none;
  height:1px;
  background:#e5e7eb;
}

/* hover effect */
.about-container:hover{
  transform:translateY(-5px);
  transition:0.3s;
}

/* mobile */
@media(max-width:600px){
  .about-container{
    margin:20px;
    padding:20px;
  }

  .about-container h1{
    font-size:26px;
  }
}

/* FULL SECTION */
.about-section{
  background:linear-gradient(to right,#eef2ff,#f9fafb);
  padding:60px 20px;
}

/* container */
.about-box{
  max-width:1100px;
  margin:auto;
  text-align:center;
}

/* heading */
.about-box h1{
  font-size:36px;
  margin-bottom:10px;
}

/* text */
.about-intro{
  font-size:18px;
  color:#444;
}

.about-desc{
  margin-top:10px;
  margin-bottom:40px;
  color:#666;
}

/* grid */
.about-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
  gap:20px;
}

/* cards */
.about-card{
  background:white;
  padding:20px;
  border-radius:12px;
  box-shadow:0 10px 25px rgba(0,0,0,0.08);
  text-align:left;
  transition:0.3s;
}

.about-card:hover{
  transform:translateY(-5px);
}

/* headings */
.about-card h3{
  margin-bottom:10px;
  color:#6366f1;
}

/* list */
.about-card ul{
  padding-left:18px;
}

.about-card li{
  margin-bottom:6px;
}

/* hidden initially */
.fade-in{
  opacity:0;
  transform:translateY(40px);
  transition:all 0.8s ease;
}

/* visible */
.fade-in.show{
  opacity:1;
  transform:translateY(0);
}

/* loader bg */
#loader{
  position:fixed;
  width:100%;
  height:100%;
  background:white;
  display:flex;
  justify-content:center;
  align-items:center;
  z-index:9999;
}

/* spinner */
.spinner{
  width:50px;
  height:50px;
  border:5px solid #e5e7eb;
  border-top:5px solid #6366f1;
  border-radius:50%;
  animation:spin 1s linear infinite;
}

@keyframes spin{
  100%{transform:rotate(360deg);}
}

/* navbar smooth */
nav{
  position:sticky;
  top:0;
  background:white;
  z-index:1000;
  transition:0.3s;
}

/* scroll effect */
nav.scrolled{
  box-shadow:0 4px 15px rgba(0,0,0,0.1);
}
.btn{
  transition:0.3s;
}

.btn:hover{
  transform:translateY(-3px) scale(1.05);
}
#loader{
  transition:opacity 0.4s ease;
}
#search{
  padding:10px 15px;
  border-radius:20px;
  border:1px solid #ddd;
  outline:none;
  transition:0.3s;
}

#search:focus{
  border-color:#6366f1;
  box-shadow:0 0 8px rgba(99,102,241,0.3);
}

.subjects{
  display: none;
  
}

.subjects.active{
  display: block;
}

.note-content{
  display: none;
}

.note-content.active{
  display: block;
}

/* POPUP */




/* 👇 hover effect (optional) */
.prev:hover, .next:hover {
  color: #00ffff; /* light glow */
}


/* hover effect */
.prev:hover, .next:hover{
  transform: translateY(-50%) scale(1.2);
  background: rgba(0,0,0,0.9);
}
.hero-text{
  font-size: 16px;
  font-weight: 500;
  text-align: center;

  color: #08dbf2;  /*
.tagline{
  color: #ffd54f;   /* yellow */
  font-weight: bold;
}
/* 🔥 Heading (heroText) */
.hero p{
  color: #040404;
  text-align: center;
  font-weight: 500;
}
/* container safe rakho */
.slider-container {
  position: relative;
  overflow: hidden; /* arrow bahar nahi jayega */
}



@media (max-width: 600px) {
  .prev, .next {
    font-size: 18px;
    width: 30px;
    height: 30px;
  }
}
/* ===== FINAL POPUP (CLEAN) ===== */


#bca{
  margin-top: 20px;
}

/* PYQ heading */
#bca > p{
  font-size: 18px;
  font-weight: 600;
  color: #6a11cb;
  text-align: center;
  margin-bottom: 15px;
}

/* cards */
#bca .card{
  background: linear-gradient(135deg, #f5f7fa, #e4e9f7);
  border-radius: 15px;
  padding: 15px;
  margin-bottom: 15px;

  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  transition: 0.3s;
}

/* hover effect */
#bca .card:hover{
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

/* headings */
#bca .card h3{
  color: #2c3e50;
  margin-bottom: 5px;
}

/* text */
#bca .card p{
  color: #555;
  font-size: 14px;
}

/* buttons */
#bca .btn{
  padding: 8px 14px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-size: 14px;
  margin-right: 8px;
  
}

/* PDF button */
.btn.pdf-btn{
  background: linear-gradient(135deg, #ff6a00, #ee0979) !important;
  color: white !important;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(255, 105, 135, 0.6);
  transition: 0.3s;
}

.btn.pdf-btn:hover{
  box-shadow: 0 0 20px rgba(255, 105, 135, 1);
  transform: scale(1.05);
}


/* Info button */
#bca .info-btn{
  background: linear-gradient(135deg, #6a11cb, #2575fc);
  color: white;
}

/* hidden content */
#bca .note-content{
  margin-top: 10px;
}
/* ===== CLASS 10 PREMIUM LOOK ===== */

#c10{
  margin-top: 20px;
}

/* Science heading */
#c10 > p{
  font-size: 18px;
  font-weight: 600;
  color: #2575fc;
  text-align: center;
  margin-bottom: 15px;
}

/* cards */
#c10 .card{
  background: linear-gradient(135deg, #ffffff, #e4e9f7);
  border-radius: 15px;
  padding: 15px;
  margin-bottom: 15px;

  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  transition: 0.2s;
}

/* hover */
#c10 .card:hover{
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

/* headings */
#c10 .card h3{
  color: #2c3e50;
}

/* text */
#c10 .card p{
  color: #555;
  font-size: 14px;
}

/* buttons */
#c10 .btn{
  padding: 8px 14px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-size: 14px;
  margin-right: 8px;
}

/* PDF button */
#c10 .pdf-btn{
  background: linear-gradient(135deg, #00c853, #00e676);
  color: white;
}

/* Info button */
#c10 .info-btn{
  background: linear-gradient(135deg, #6a11cb, #2575fc);
  color: white;
}

/* hidden content */
#c10 .note-content{
  margin-top: 10px;
}
/* FULL SCREEN OVERLAY */
/* ===== FULL SCREEN OVERLAY ===== */
/* ===== POPUP ===== */
/* ===== FINAL POPUP (ONLY ONE) ===== */

#imgPopup{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.95);
  z-index: 999999;

  display: none;

  overflow-y: auto;
  -webkit-overflow-scrolling: touch;

  padding: 60px 10px;
}

#imgPopup.show{
  display: block;
}

/* IMAGE */
#popupImg{
  display: block;
  margin: 0 auto;

  width: 100%;
  max-width: 900px;
  height: auto;

  border-radius: 10px;
}

/* CLOSE */
.close{
  position: fixed;
  top: 15px;
  right: 20px;
  color: white;
  font-size: 28px;
  cursor: pointer;
}

/* ARROWS */
.prev, .next{
  position: fixed;
  top: 50%;
  transform: translateY(-50%);

  width: 40px;
  height: 40px;

  border-radius: 50%;
  border: none;
  cursor: pointer;

  background: rgba(255,255,255,0.2);
  color: white;
}

.prev{ left: 15px; }
.next{ right: 15px; }

/* MOBILE */
@media (max-width: 600px){
  #popupImg{
    max-width: 100vw;
    height: auto;
    border-radius: 0;
  }
}
.note-content{
  display: none;
}
#c12 .card{
  background: linear-gradient(135deg, #f3f0ff, #e0e7ff);
  border-radius: 16px;
  padding: 15px;
  margin-bottom: 15px;

  box-shadow: 0 6px 18px rgba(0,0,0,0.1);
  transition: 0.2s;
  cursor: pointer;
}

#c12 .card:hover{
  transform: translateY(-5px);
  box-shadow: 0 12px 25px rgba(0,0,0,0.15);
}

/* headings */
#c12 .card h3{
  color: #4c1d95;
  margin-bottom: 5px;
}

/* text */
#c12 .card p{
  color: #555;
  font-size: 14px;
}

/* buttons */
#c12 .btn{
  padding: 8px 14px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-size: 14px;
  margin-right: 8px;
}

/* PDF button */
#c12 .pdf-btn{
  background: linear-gradient(135deg, #00c853, #00e676);
  color: white;
}

/* Info button */
#c12 .info-btn{
  background: linear-gradient(135deg, #6a11cb, #2575fc);
  color: white;
}
#c12 > p{
  font-size: 18px;
  font-weight: 600;
  color: #2575fc;
  text-align: center;
  margin-bottom: 15px;
}

/* disabled */
#c12 .disabled-btn{
  opacity: 0.6;
}

/* hidden content */
.note-content{
  display: none;
}
.note-content.show{
  display: block;
}
#c9 > p{
  font-size: 18px;
  font-weight: 600;
  color: #2575fc;
  text-align: center;
  margin-bottom: 15px;
}
#c11 > p{
  font-size: 18px;
  font-weight: 600;
  color: #2575fc;
  text-align: center;
  margin-bottom: 15px;
}
#c8 > p{
  font-size: 18px;
  font-weight: 600;
  color: #2575fc;
  text-align: center;
  margin-bottom: 15px;
}
.card h3 {
  color: #2c3e50; /* dark blue */
}.hero-text strong {
  color: #6a5acd; /* purple */
}
.hero-text ul li {
  color: #333;
}


/* PARAGRAPH */
.hero-text p {
  margin: 10px 0;
}


/* ===== HERO ===== */
.hero {
  text-align: center;
  padding: 90px 20px;
  background: linear-gradient(to bottom, #ffffff, #f8f9ff);
}

/* top line */
.top-line {
  font-size: 14px;
  color: #6b7280;
  margin-bottom: 10px;
}

/* main heading */
.hero h1 {
  font-size: 50px;
  font-weight: 800;
  color: #2600e7;
  margin-bottom: 10px;
}

/* tagline */
.tagline {
  font-size: 16px;
  color: #444;
  margin-bottom: 20px;
}

/* main text box */
.hero-text {
  max-width: 700px;
  margin: auto;
  font-size: 17px;
  line-height: 1.8;
  color: #030404;
}

/* highlight text */
.hero-text .highlight {
  font-weight: bold;
  color: #7b61ff;
  margin-top: 15px;
}

/* list */
.hero-text ul {
  text-align: left;
  display: inline-block;
  margin-top: 10px;
  padding-left: 20px;
}

.hero-text ul li {
  margin: 8px 0;
  font-size:18px;
}
  .hero-text ul li {
    color:#050505;
  }
  /* MOBILE FIX */
body{
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

.container, .subjects{
  width: 100%;
  max-width: 100%;
}

img{
  max-width: 100%;
  height: auto;
}

.btn-box{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

@media (max-width: 768px){
  .cat-box{
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
  }

  .cat{
    font-size: 14px;
    padding: 6px 10px;
  }

  .card{
    padding: 10px;
  }
}



.iq-btn{

display:inline-flex;

align-items:center;
justify-content:center;

gap:6px;

padding:8px 14px;

font-size:14px;

font-weight:600;

border-radius:10px;

background:linear-gradient(
135deg,
#fb01ff,
#501066
);

color:rgb(255, 255, 255);

text-decoration:none;

box-shadow:
0 0 10px rgba(43, 1, 254, 0.3);

transition:0.3s;

}

/* HOVER */

.iq-btn:hover{

transform:scale(1.03);

}

/* ICON */

.iq-btn span{

font-size:13px;

}
.iq-section p{

font-size:18px;

font-weight:600;

background:linear-gradient(
90deg,
#000000,
#002aff
);

-webkit-background-clip:text;

background-clip:text;

-webkit-text-fill-color:transparent;

}
.java-section{

text-align:center;

margin-top:35px;
margin-bottom:25px;

}

.java-section p{

font-size:18px;

font-weight:600;

background:linear-gradient(
90deg,
#000000,
#6a00ff
);

-webkit-background-clip:text;

background-clip:text;

-webkit-text-fill-color:transparent;

margin-bottom:15px;

}

.java-btn{

display:inline-flex;

align-items:center;
justify-content:center;

gap:6px;

padding:10px 18px;

font-size:15px;

font-weight:600;

border-radius:10px;

background:linear-gradient(
135deg,
#fb01ff,
#501066
);

color:white;

text-decoration:none;

box-shadow:
0 0 10px rgba(43, 1, 254, 0.3);

transition:0.3s;

}

.java-btn:hover{

transform:scale(1.05);

}