/* ============================================================
   BANK REASONING — MODERN GLASSMORPHISM STYLESHEET v2
   ============================================================ */

/* ── CSS Variables ── */
:root {
  /* Colors */
  --purple:      #7c3aed;
  --purple-lt:   #a78bfa;
  --purple-dk:   #5b21b6;
  --cyan:        #06b6d4;
  --cyan-lt:     #67e8f9;
  --pink:        #ec4899;
  --green:       #22c55e;
  --amber:       #f59e0b;
  --red:         #ef4444;
  --wa-green:    #25d366;

  /* Backgrounds */
  --bg:          #08090f;
  --bg2:         #0d0f1c;
  --bg3:         #12142a;

  /* Glass */
  --glass:       rgba(255,255,255,0.04);
  --glass-hov:   rgba(255,255,255,0.08);
  --glass-bd:    rgba(255,255,255,0.08);
  --glass-bd-hov:rgba(124,58,237,0.6);

  /* Text */
  --t1: #f8fafc;
  --t2: #94a3b8;
  --t3: #475569;

  /* Shadows */
  --sh-sm: 0 1px 3px rgba(0,0,0,0.4);
  --sh-md: 0 4px 20px rgba(0,0,0,0.5);
  --sh-lg: 0 20px 60px rgba(0,0,0,0.6);
  --sh-glow: 0 0 40px rgba(124,58,237,0.25);
  --sh-wa:   0 8px 32px rgba(37,211,102,0.5);

  --radius:    14px;
  --radius-lg: 22px;
  --radius-xl: 30px;
  --trans:     all 0.25s cubic-bezier(0.4,0,0.2,1);
}

/* ── Reset ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:'Inter',sans-serif;
  background:var(--bg);
  color:var(--t1);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
img{max-width:100%}
button{cursor:pointer;border:none;background:none;font-family:inherit}
input,select,textarea{font-family:inherit}

/* ── Utilities ── */
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ── Gradient text ── */
.hero-highlight{
  background:linear-gradient(135deg,var(--purple-lt),var(--cyan));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}

/* ================================================================
   NAVBAR
   ================================================================ */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:200;
  padding:14px 0;
  transition:var(--trans);
}
.navbar.scrolled{
  background:rgba(8,9,15,0.9);
  backdrop-filter:blur(24px);
  -webkit-backdrop-filter:blur(24px);
  border-bottom:1px solid var(--glass-bd);
  box-shadow:var(--sh-sm);
}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;
  display:flex;align-items:center;justify-content:space-between;
}

/* Brand */
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-icon{
  width:42px;height:42px;
  background:linear-gradient(135deg,var(--purple),var(--cyan));
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:800;letter-spacing:-0.3px}
.brand-sub{font-size:11px;color:var(--purple-lt);font-weight:500}

/* Nav links */
.nav-links{display:flex;align-items:center;gap:4px}
.nl{
  padding:8px 15px;border-radius:10px;
  font-size:14px;font-weight:500;color:var(--t2);
  transition:var(--trans);
}
.nl:hover,.nl.active{color:var(--t1);background:var(--glass)}
.nl-admin{
  color:var(--amber) !important;
  background:rgba(245,158,11,0.1) !important;
  border:1px solid rgba(245,158,11,0.25);
  display:flex;align-items:center;gap:6px;
}
.nl-admin:hover{background:rgba(245,158,11,0.2) !important}

.hamburger{
  display:none;width:40px;height:40px;border-radius:10px;
  background:var(--glass);border:1px solid var(--glass-bd);
  align-items:center;justify-content:center;
  color:var(--t2);font-size:18px;
}

/* ================================================================
   HERO
   ================================================================ */
.hero{
  min-height:100vh;
  display:flex;align-items:center;justify-content:center;
  padding:120px 24px 80px;
  position:relative;overflow:hidden;
  text-align:center;
}

/* Mesh blobs */
.blob{
  position:absolute;border-radius:50%;
  filter:blur(80px);opacity:0.18;pointer-events:none;
}
.b1{width:600px;height:600px;background:var(--purple);top:-120px;left:-150px;
    animation:blobFloat 9s ease-in-out infinite}
.b2{width:500px;height:500px;background:var(--cyan);bottom:-80px;right:-100px;
    animation:blobFloat 11s ease-in-out infinite reverse}
.b3{width:350px;height:350px;background:var(--pink);top:55%;left:55%;
    transform:translate(-50%,-50%);
    animation:blobFloat 7s ease-in-out infinite}
@keyframes blobFloat{
  0%,100%{transform:translate(0,0) scale(1)}
  33%{transform:translate(20px,-20px) scale(1.04)}
  66%{transform:translate(-15px,15px) scale(.97)}
}
.b3{animation:blobFloat3 7s ease-in-out infinite}
@keyframes blobFloat3{
  0%,100%{transform:translate(-50%,-50%) scale(1)}
  50%{transform:translate(calc(-50% + 20px),calc(-50% - 20px)) scale(1.05)}
}

/* Grid overlay */
.grid-overlay{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,0.025) 1px,transparent 1px);
  background-size:60px 60px;
}

/* Hero body */
.hero-body{position:relative;z-index:2;max-width:780px;margin:0 auto}

.hero-pill{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 20px;border-radius:100px;
  background:rgba(124,58,237,0.12);
  border:1px solid rgba(124,58,237,0.35);
  color:var(--purple-lt);font-size:13px;font-weight:600;
  margin-bottom:28px;
  animation:fadeDown .6s ease both;
}
.pill-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--green);
  box-shadow:0 0 8px var(--green);
  animation:blink 1.8s ease-in-out infinite;
}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.4}}

.hero-title{
  font-size:clamp(2.6rem,6.5vw,5rem);
  font-weight:900;line-height:1.08;letter-spacing:-1.5px;
  margin-bottom:22px;
  animation:fadeUp .6s ease .1s both;
}
.hero-desc{
  font-size:clamp(1rem,2vw,1.15rem);
  color:var(--t2);margin-bottom:40px;line-height:1.75;
  animation:fadeUp .6s ease .2s both;
}

/* Search */
.search-wrap{margin-bottom:44px;animation:fadeUp .6s ease .3s both}
.search-box{
  display:flex;align-items:center;gap:12px;
  background:var(--glass);
  border:1px solid var(--glass-bd);
  border-radius:100px;
  padding:10px 10px 10px 22px;
  max-width:560px;margin:0 auto;
  backdrop-filter:blur(20px);
  transition:var(--trans);
}
.search-box:focus-within{
  border-color:var(--purple);
  box-shadow:0 0 0 4px rgba(124,58,237,0.18),var(--sh-glow);
}
.search-box i{color:var(--t3);font-size:16px;flex-shrink:0}
.search-box input{
  flex:1;background:none;border:none;outline:none;
  color:var(--t1);font-size:15px;
}
.search-box input::placeholder{color:var(--t3)}
.search-clear{
  width:34px;height:34px;border-radius:50%;
  background:rgba(255,255,255,0.06);
  color:var(--t3);font-size:13px;
  display:flex;align-items:center;justify-content:center;
  transition:var(--trans);flex-shrink:0;
}
.search-clear:hover{background:var(--red);color:#fff}

/* Counters */
.hero-counters{
  display:flex;align-items:center;justify-content:center;gap:36px;
  animation:fadeUp .6s ease .4s both;
}
.counter-item{text-align:center}
.counter-val{
  display:block;font-size:2.1rem;font-weight:900;
  background:linear-gradient(135deg,var(--purple-lt),var(--cyan));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  line-height:1;
}
.counter-lbl{font-size:12px;color:var(--t3);font-weight:600;text-transform:uppercase;letter-spacing:.06em;margin-top:2px}
.counter-sep{width:1px;height:44px;background:var(--glass-bd)}

/* Floating chips */
.chip{
  position:absolute;z-index:2;
  display:flex;align-items:center;gap:10px;
  padding:10px 18px;border-radius:100px;
  background:var(--glass);
  border:1px solid var(--glass-bd);
  backdrop-filter:blur(20px);
  font-size:13px;font-weight:600;color:var(--t2);
  box-shadow:var(--sh-md);
  pointer-events:none;
}
.chip i{font-size:18px}
.chip1{top:22%;left:4%;animation:chipFloat 4s ease-in-out infinite}.chip1 i{color:var(--red)}
.chip2{bottom:28%;right:4%;animation:chipFloat 5.5s ease-in-out infinite reverse}.chip2 i{color:var(--green)}
.chip3{top:62%;left:2%;animation:chipFloat 6.5s ease-in-out infinite}.chip3 i{color:var(--amber)}
@keyframes chipFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}

.scroll-hint{
  position:absolute;bottom:28px;left:50%;transform:translateX(-50%);z-index:2;
}
.scroll-hint a{
  display:flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:50%;
  border:1px solid var(--glass-bd);color:var(--t3);
  animation:bounce 2s infinite;
  transition:var(--trans);
}
.scroll-hint a:hover{border-color:var(--purple);color:var(--purple-lt)}
@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(7px)}}

/* ================================================================
   CHAPTERS SECTION
   ================================================================ */
.sec-chapters{padding:90px 0;background:var(--bg2)}

/* Section header */
.sec-head{text-align:center;margin-bottom:48px}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(124,58,237,0.1);border:1px solid rgba(124,58,237,0.25);
  color:var(--purple-lt);padding:6px 16px;border-radius:100px;
  font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;
  margin-bottom:14px;
}
.sec-title{font-size:clamp(1.7rem,3.5vw,2.4rem);font-weight:900;letter-spacing:-0.5px;margin-bottom:10px}
.sec-sub{color:var(--t2);font-size:15px}

/* ── EXAM TYPE BAR (Pre / Mains) ── */
.exam-type-bar{
  display:flex;align-items:center;justify-content:center;
  gap:12px;margin-bottom:28px;flex-wrap:wrap;
}
.exam-tab{
  display:flex;align-items:center;gap:10px;
  padding:12px 28px;border-radius:100px;
  font-size:14px;font-weight:700;color:var(--t2);
  background:var(--glass);border:1.5px solid var(--glass-bd);
  transition:var(--trans);letter-spacing:.01em;
}
.exam-tab:hover{border-color:var(--purple-lt);color:var(--t1);background:rgba(124,58,237,0.08)}
.exam-tab[data-exam="Pre"].active{
  background:linear-gradient(135deg,#7c3aed,#a78bfa);
  color:#fff;border-color:transparent;
  box-shadow:0 4px 24px rgba(124,58,237,0.45);
}
.exam-tab[data-exam="Mains"].active{
  background:linear-gradient(135deg,#f59e0b,#ef4444);
  color:#fff;border-color:transparent;
  box-shadow:0 4px 24px rgba(245,158,11,0.45);
}
.exam-tab[data-exam="all"].active{
  background:linear-gradient(135deg,var(--purple),var(--cyan));
  color:#fff;border-color:transparent;
  box-shadow:0 4px 24px rgba(124,58,237,0.35);
}

/* Ctrl bar */
.ctrl-bar{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;margin-bottom:36px;flex-wrap:wrap;
}
.filter-tabs{display:flex;gap:8px;flex-wrap:wrap}
.ftab{
  display:flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:100px;
  font-size:13px;font-weight:600;color:var(--t2);
  background:var(--glass);border:1px solid var(--glass-bd);
  transition:var(--trans);
}
.ftab:hover{border-color:var(--purple-lt);color:var(--t1)}
.ftab.active{
  background:linear-gradient(135deg,var(--purple),var(--cyan));
  color:#fff;border-color:transparent;
  box-shadow:0 4px 20px rgba(124,58,237,0.4);
}

.sort-sel{
  background:var(--glass);border:1px solid var(--glass-bd);
  border-radius:10px;padding:9px 14px;
  color:var(--t2);font-size:13px;outline:none;cursor:pointer;
  backdrop-filter:blur(10px);
}
.sort-sel:focus{border-color:var(--purple)}

/* States */
.state-loading{text-align:center;padding:80px 20px;color:var(--t2)}
.spinner{
  width:44px;height:44px;border-radius:50%;
  border:3px solid var(--glass-bd);border-top-color:var(--purple);
  margin:0 auto 16px;animation:spin .75s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.state-empty{text-align:center;padding:80px 20px;color:var(--t2)}
.state-empty i{font-size:3rem;opacity:.3;display:block;margin-bottom:16px}
.state-empty h3{font-size:1.2rem;margin-bottom:8px;color:var(--t1)}
.state-empty p{margin-bottom:24px}

/* PDF Grid */
.pdf-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(320px,1fr));
  gap:22px;
}

/* ── PDF CARD ── */
.pdf-card{
  background:var(--glass);
  border:1px solid var(--glass-bd);
  border-radius:var(--radius-lg);
  overflow:hidden;
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  transition:var(--trans);
  animation:fadeUp .35s ease both;
  position:relative;
}
.pdf-card::before{
  content:'';position:absolute;inset:0;border-radius:inherit;
  background:linear-gradient(135deg,rgba(124,58,237,0.06),rgba(6,182,212,0.04));
  opacity:0;transition:var(--trans);pointer-events:none;
}
.pdf-card:hover{
  border-color:var(--glass-bd-hov);
  transform:translateY(-5px);
  box-shadow:var(--sh-glow),var(--sh-lg);
}
.pdf-card:hover::before{opacity:1}

/* Card Header */
.card-hd{
  padding:22px 22px 16px;
  border-bottom:1px solid var(--glass-bd);
  position:relative;
}
.card-row1{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:12px}

.card-left{flex:1;min-width:0}
.card-chapter{
  font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;
  color:var(--purple-lt);margin-bottom:5px;
}
.card-title{
  font-size:15px;font-weight:700;color:var(--t1);
  line-height:1.35;
}

.card-right{display:flex;flex-direction:column;align-items:flex-end;gap:8px;flex-shrink:0}
.pdf-icon{
  width:52px;height:52px;border-radius:14px;
  background:rgba(239,68,68,0.12);border:1px solid rgba(239,68,68,0.25);
  display:flex;align-items:center;justify-content:center;
  font-size:22px;color:var(--red);flex-shrink:0;
}
.badge-new{
  background:rgba(34,197,94,0.15);color:var(--green);
  border:1px solid rgba(34,197,94,0.3);
  padding:3px 10px;border-radius:100px;
  font-size:10px;font-weight:800;letter-spacing:.06em;
  animation:blink 1.8s infinite;
}

/* Exam type badge */
.exam-badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:4px 12px;border-radius:100px;
  font-size:11px;font-weight:800;letter-spacing:.06em;
  text-transform:uppercase;
}
.exam-badge-pre{
  background:rgba(124,58,237,0.15);color:#c4b5fd;
  border:1px solid rgba(124,58,237,0.35);
}
.exam-badge-mains{
  background:rgba(245,158,11,0.15);color:#fcd34d;
  border:1px solid rgba(245,158,11,0.35);
}

.subj-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:100px;
  font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;
}
/* Subject colors */
.s-verbal   {background:rgba(124,58,237,.15);color:#c4b5fd;border:1px solid rgba(124,58,237,.3)}
.s-nonverbal{background:rgba(6,182,212,.15);color:var(--cyan-lt);border:1px solid rgba(6,182,212,.3)}
.s-logical  {background:rgba(34,197,94,.15);color:#86efac;border:1px solid rgba(34,197,94,.3)}
.s-math     {background:rgba(245,158,11,.15);color:#fcd34d;border:1px solid rgba(245,158,11,.3)}
.s-other    {background:rgba(148,163,184,.1);color:var(--t2);border:1px solid rgba(148,163,184,.2)}

.card-desc{
  font-size:13px;color:var(--t2);line-height:1.6;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{
  display:flex;gap:16px;font-size:12px;color:var(--t3);
}
.card-meta span{display:flex;align-items:center;gap:5px}

/* Card footer */
.card-ft{display:flex;gap:10px;padding:14px 18px}
.btn-view,.btn-dl{
  flex:1;display:flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 14px;border-radius:10px;
  font-size:13px;font-weight:600;transition:var(--trans);
}
.btn-view{
  background:rgba(124,58,237,.12);color:var(--purple-lt);
  border:1px solid rgba(124,58,237,.25);
}
.btn-view:hover{background:var(--purple);color:#fff;border-color:var(--purple);box-shadow:0 4px 20px rgba(124,58,237,.4)}
.btn-dl{
  background:rgba(6,182,212,.12);color:var(--cyan-lt);
  border:1px solid rgba(6,182,212,.25);
}
.btn-dl:hover{background:var(--cyan);color:#fff;border-color:var(--cyan);box-shadow:0 4px 20px rgba(6,182,212,.4)}

/* ================================================================
   CONTACT SECTION
   ================================================================ */
.sec-contact{padding:90px 0;background:var(--bg)}
.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-top:44px}
.ccard{
  display:flex;align-items:center;gap:18px;
  padding:24px;border-radius:var(--radius-lg);
  background:var(--glass);border:1px solid var(--glass-bd);
  backdrop-filter:blur(20px);transition:var(--trans);
}
.ccard:hover{transform:translateY(-4px);box-shadow:var(--sh-lg)}
.ccard-icon{
  width:52px;height:52px;border-radius:14px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;font-size:24px;
}
.ccard-wa .ccard-icon{background:rgba(37,211,102,.15);color:var(--wa-green);border:1px solid rgba(37,211,102,.3)}
.ccard-tg .ccard-icon{background:rgba(6,182,212,.15);color:var(--cyan);border:1px solid rgba(6,182,212,.3)}
.ccard-yt .ccard-icon{background:rgba(239,68,68,.15);color:var(--red);border:1px solid rgba(239,68,68,.3)}
.ccard-wa:hover{border-color:rgba(37,211,102,.5)}
.ccard-tg:hover{border-color:rgba(6,182,212,.5)}
.ccard-yt:hover{border-color:rgba(239,68,68,.5)}
.ccard-info{flex:1;min-width:0}
.ccard-info h4{font-size:15px;font-weight:700;margin-bottom:2px}
.ccard-info p{font-size:13px;color:var(--t2)}
.ccard-arrow{color:var(--t3);font-size:14px;flex-shrink:0;transition:var(--trans)}
.ccard:hover .ccard-arrow{color:var(--purple-lt);transform:translate(2px,-2px)}

/* ================================================================
   FOOTER
   ================================================================ */
.footer{
  background:var(--bg2);
  border-top:1px solid var(--glass-bd);
  padding:40px 0;
}
.footer-inner{
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:28px;
}
.footer-brand p{color:var(--t3);font-size:13px;margin-top:10px;max-width:300px}

.footer-right{
  display:flex;flex-direction:column;align-items:flex-end;gap:16px;
}

/* WhatsApp button in footer */
.footer-wa-btn{
  display:inline-flex;align-items:center;gap:12px;
  padding:12px 22px;border-radius:14px;
  background:rgba(37,211,102,0.12);
  border:1.5px solid rgba(37,211,102,0.35);
  color:var(--wa-green);
  transition:var(--trans);
}
.footer-wa-btn:hover{
  background:var(--wa-green);color:#fff;border-color:var(--wa-green);
  box-shadow:var(--sh-wa);
}
.footer-wa-btn i{font-size:22px}
.footer-wa-btn span{font-size:14px;font-weight:700}
.footer-wa-btn small{font-size:12px;opacity:.8;display:block;line-height:1}

.footer-copy{text-align:right;font-size:13px;color:var(--t3)}
.footer-copy p+p{margin-top:6px}
.footer-dev{
  display:flex;align-items:center;gap:6px;justify-content:flex-end;
  font-size:13px;color:var(--t3);
}
.dev-name-link{
  display:inline-flex;align-items:center;gap:5px;
  text-decoration:none;transition:var(--trans);
}
.dev-name-link:hover .dev-name{
  background:linear-gradient(135deg,var(--wa-green),#86efac);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.dev-name{
  font-weight:700;
  background:linear-gradient(135deg,var(--purple-lt),var(--cyan));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}

/* ================================================================
   WHATSAPP FLOATING BUTTON
   ================================================================ */
.wa-float{
  position:fixed;bottom:86px;right:24px;z-index:399;
  width:56px;height:56px;border-radius:16px;
  background:var(--wa-green);
  display:flex;align-items:center;justify-content:center;
  font-size:26px;color:#fff;
  box-shadow:var(--sh-wa);
  transition:var(--trans);
  animation:waPulse 2.5s ease-in-out infinite;
}
.wa-float:hover{
  transform:scale(1.12) translateY(-3px);
  box-shadow:0 12px 40px rgba(37,211,102,0.65);
}
@keyframes waPulse{
  0%,100%{box-shadow:0 0 0 0 rgba(37,211,102,0.5)}
  50%{box-shadow:0 0 0 14px rgba(37,211,102,0)}
}

/* ================================================================
   MODAL
   ================================================================ */
.modal-backdrop{
  position:fixed;inset:0;z-index:500;
  background:rgba(0,0,0,0.8);backdrop-filter:blur(12px);
  display:flex;align-items:center;justify-content:center;padding:20px;
  animation:fadeIn .2s ease;
}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal-box{
  background:var(--bg3);border:1px solid var(--glass-bd);
  border-radius:var(--radius-xl);
  width:100%;max-width:920px;height:88vh;
  display:flex;flex-direction:column;overflow:hidden;
  animation:slideUp .3s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes slideUp{from{transform:translateY(32px);opacity:0}to{transform:translateY(0);opacity:1}}
.modal-head{
  display:flex;align-items:center;gap:14px;
  padding:16px 22px;border-bottom:1px solid var(--glass-bd);
}
.modal-title{flex:1;font-size:15px;font-weight:700;color:var(--t1)}
.modal-actions{display:flex;gap:10px;align-items:center;flex-shrink:0}
.btn-fs-modal{
  display:flex;align-items:center;gap:8px;
  padding:8px 16px;background:rgba(124,58,237,0.15);color:var(--purple-lt);
  border:1px solid rgba(124,58,237,0.35);border-radius:10px;
  font-size:13px;font-weight:700;transition:var(--trans);
}
.btn-fs-modal:hover{background:var(--purple);color:#fff;border-color:var(--purple)}
.btn-dl-modal{
  display:flex;align-items:center;gap:8px;
  padding:8px 18px;background:var(--cyan);color:#fff;
  border-radius:10px;font-size:13px;font-weight:700;transition:var(--trans);
}
.btn-dl-modal:hover{background:var(--cyan-lt);color:var(--bg)}
.modal-close-btn{
  width:36px;height:36px;border-radius:10px;background:var(--glass);
  color:var(--t2);display:flex;align-items:center;justify-content:center;
  font-size:16px;transition:var(--trans);
}
.modal-close-btn:hover{background:var(--red);color:#fff}
.modal-body{flex:1;overflow:hidden}
.modal-body iframe{width:100%;height:100%;border:none}

/* ================================================================
   BACK TO TOP
   ================================================================ */
.btt{
  position:fixed;bottom:24px;right:24px;z-index:400;
  width:46px;height:46px;border-radius:14px;
  background:linear-gradient(135deg,var(--purple),var(--cyan));
  color:#fff;font-size:17px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 30px rgba(124,58,237,0.45);
  opacity:0;pointer-events:none;
  transition:var(--trans);
}
.btt.visible{opacity:1;pointer-events:all}
.btt:hover{transform:translateY(-3px);box-shadow:0 12px 36px rgba(124,58,237,0.55)}

/* ================================================================
   BUTTONS
   ================================================================ */
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 22px;border-radius:10px;
  background:var(--glass);border:1px solid var(--glass-bd);
  color:var(--t2);font-size:14px;font-weight:600;
  transition:var(--trans);
}
.btn-ghost:hover{border-color:var(--purple);color:var(--purple-lt)}

/* ================================================================
   ANIMATIONS
   ================================================================ */
@keyframes fadeDown{from{opacity:0;transform:translateY(-16px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeUp  {from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:translateY(0)}}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media(min-width:1600px){
  .container{max-width:1440px}
  .hero-body{max-width:960px}
  .pdf-grid{grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:28px}
  .modal-box{max-width:1200px;height:90vh}
  .card-title{font-size:17px}
  .btn-view,.btn-dl{font-size:15px;padding:12px 18px}
}

@media(min-width:769px) and (max-width:1024px){
  .pdf-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
  .hero{padding:100px 20px 70px}
  .modal-box{width:94%;height:85vh}
}

@media(max-width:768px){
  .nav-links{
    display:none;flex-direction:column;
    position:fixed;top:68px;left:0;right:0;
    background:rgba(8,9,15,0.96);backdrop-filter:blur(24px);
    border-bottom:1px solid var(--glass-bd);
    padding:16px;gap:4px;
  }
  .nav-links.open{display:flex}
  .hamburger{display:flex}

  .chip{display:none}
  .hero{padding:90px 20px 70px}
  .hero-counters{gap:18px}
  .counter-val{font-size:1.6rem}

  .ctrl-bar{flex-direction:column;align-items:flex-start}
  .sort-sel{width:100%}
  .pdf-grid{grid-template-columns:1fr}
  .exam-type-bar{gap:8px}
  .exam-tab{padding:10px 18px;font-size:13px}

  .modal-box{width:96%;height:92vh;border-radius:var(--radius-lg)}
  .modal-head{padding:12px 16px;flex-wrap:wrap}
  .btn-fs-modal{display:none}

  .footer-inner{flex-direction:column}
  .footer-right{align-items:flex-start;width:100%}
  .footer-copy{text-align:left}
  .footer-dev{justify-content:flex-start}
}

@media(max-width:480px){
  .hero-title{letter-spacing:-0.8px;font-size:2.4rem}
  .btn-view,.btn-dl{font-size:12px;padding:10px 10px}
  .card-hd{padding:16px}
  .wa-float{bottom:80px;right:16px;width:50px;height:50px;font-size:22px}
}