:root{
  --bg:#ffffff;
  --muted-bg:#fbf8f6;
  --accent:#8b5cf6;
  --accent-600:#6d28d9;
  --accent-800:#4c1d95;
  --section-bg-a:#fbf5ff;
  --section-bg-b:#ffffff;
  --footer-bg:#f6f0ff;
  --text:#0f172a;
  --muted-text:#52606a;
  --card:#ffffff;
  --shadow: 0 8px 30px rgba(15,23,42,0.06);
  --header-height:96px;
}

@keyframes slideInUp {
  from{opacity:0;transform:translateY(12px)}
  to{opacity:1;transform:translateY(0)}
}

@keyframes scaleIn {
  from{opacity:0;transform:scale(0.8)}
  to{opacity:1;transform:scale(1)}
}

@keyframes toastEnter {
  from{opacity:0;transform:translateX(-50%) translateY(5px)}
  to{opacity:1;transform:translateX(-50%) translateY(0)}
}

@keyframes toastExit {
  from{opacity:1;transform:translateX(-50%) translateY(0)}
  to{opacity:0;transform:translateX(-50%) translateY(5px)}
}

@keyframes slideInRight {
  from{opacity:0;transform:translateX(100px)}
  to{opacity:1;transform:translateX(0)}
}

@keyframes slideOutRight {
  from{opacity:1;transform:translateX(0)}
  to{opacity:0;transform:translateX(100px)}
}

*{box-sizing:border-box}
html,body{height:100%}
html{scroll-padding-top:var(--header-height)}
body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,'Helvetica Neue',Arial;
  color:var(--text);
  background: transparent;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  padding-top: var(--header-height);
}
.container{max-width:1100px;margin:0 auto;padding:28px}
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:1000;
  height:var(--header-height);
  background-color:rgba(255,255,255,0.88);
  border-bottom:1px solid rgba(109,40,217,0.12);
  backdrop-filter:blur(5px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:0 12px 30px rgba(15,23,42,0.08);
}
.site-header .container{height:var(--header-height);display:flex;align-items:center;padding-left:28px;padding-right:28px}
.nav-inner{display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:18px;font-weight:700;color:var(--text);text-decoration:none}
.brand .brand-text{display:flex;flex-direction:column;gap:8px;line-height:1.05}
.brand .brand-title{font-family:'Poppins', Inter, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;font-weight:700;font-size:20px;letter-spacing:0.2px;color:var(--text)}
.brand .brand-sub{font-size:12px;color:var(--muted-text);font-weight:500}
.logo{width:96px;height:96px;object-fit:contain}
.logo-sm{width:72px;height:72px}
.site-nav{display:flex;align-items:center;gap:18px}
.site-nav a{color:var(--muted-text);text-decoration:none;padding:6px 12px 26px;border-radius:8px;transition:all .18s ease;position:relative;overflow:visible;display:inline-flex;align-items:center}
.site-nav a::after{content:'';position:absolute;left:6px;right:6px;height:3px;bottom:6px;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent-600));transform:scaleX(0);transform-origin:left center;transition:transform .18s ease,opacity .18s ease;opacity:0}
.site-nav a:hover{color:var(--accent-600);background:rgba(139,92,246,0.06)}
.site-nav a:hover::after{transform:scaleX(1);opacity:1}
.site-nav a.active{color:var(--accent-600)}
.site-nav a.active::after{transform:scaleX(1);opacity:1}
.site-nav a.btn-primary::after{background:linear-gradient(90deg,rgba(255,255,255,0.95),rgba(255,255,255,0.95));height:3px;bottom:6px;left:6px;right:6px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:10px;border:1px solid transparent;text-decoration:none;font-weight:600}
.btn-primary{background:var(--accent);color:white;box-shadow:var(--shadow);border-color:transparent}
.btn-outline{background:transparent;border:1px solid rgba(15,23,42,0.06);color:var(--text)}
.btn.large{padding:14px 20px;font-size:16px}

.hero{display:grid;grid-template-columns:1fr;gap:36px;align-items:start;padding-top:36px;padding-bottom:36px}
.site-title{font-size:40px;margin:0 0 12px 0;letter-spacing:-0.5px;font-family:'Manrope', Inter, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial}
.compass{font-size:26px;margin-left:6px}
.lead{color:var(--muted-text);font-size:17px;line-height:1.6;margin-top:6px}
.lead-small{color:var(--muted-text);margin-top:10px}
.hero-ctas{margin-top:18px;display:flex;gap:12px}
.hero-btn{display:inline-flex;align-items:center;gap:8px;padding:14px 24px;border-radius:5px;border:none;text-decoration:none;font-weight:600;font-size:15px;transition:all .28s cubic-bezier(0.34,1.56,0.64,1);cursor:pointer;position:relative;overflow:hidden}
.hero-btn-primary{background:var(--accent-600);color:white;transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;}
.hero-btn-primary:hover{background:var(--accent-800);box-shadow:0 12px 32px rgba(139,92,246,0.4);transform:scale(1.05);border-radius:0px}
.hero-btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(139,92,246,0.3)}
.faq-cta{margin-top:24px;display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center}
.faq-ctas{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.faq-ctas .hero-btn{padding:12px 20px;font-size:14px;border-radius:5px}
.note{margin-top:14px;color:var(--muted-text);font-size:13px}

.profile-card{background:linear-gradient(180deg,var(--accent) 0%, #b79bff 100%);padding:22px;border-radius:14px;color:white;box-shadow:var(--shadow)}
.profile-card .avatar{width:80px;height:80px;border-radius:999px;object-fit:cover;border:4px solid rgba(255,255,255,0.75)}
.profile-card h3{margin:12px 0 6px 0}
.profile-card .muted{color:rgba(255,255,255,0.95);font-size:14px}
.profile-card .socials{margin-top:12px;display:flex;gap:12px}
.profile-card .socials a{color:rgba(255,255,255,0.95);text-decoration:underline}

/* About Me full-width profile */
.about-me{padding:12px 0}
.profile-card-full{background:transparent;color:var(--text);box-shadow:none;border-radius:12px;padding:0;display:flex;gap:48px;align-items:flex-start;justify-content:space-between}
.profile-text{flex:1;min-width:0}
.profile-text .muted{color:var(--muted-text);font-size:16px;line-height:1.6}
.profile-card-full h2{margin-top:0;margin-bottom:0}
.profile-card-full .socials{margin-top:18px}

/* Profile Stats Section - Right side */
.profile-stats{display:flex;flex-direction:column;align-items:center;gap:20px;flex-shrink:0}
.profile-stats .avatar{width:200px;height:200px;border-radius:999px;object-fit:cover;border:5px solid rgba(139,92,246,0.15)}

/* Stats section styling */
.stats-section{display:flex;flex-direction:column;gap:24px;align-items:center;width:100%;text-align:center}
.stat-item{display:flex;flex-direction:column;gap:6px}
.stat-number{font-size:36px;font-weight:700;color:var(--accent);font-family:'Poppins',Inter,system-ui}
.stat-label{font-size:12px;color:var(--muted-text);font-weight:600;text-transform:uppercase;letter-spacing:0.5px;line-height:1.4}

/* Companies section */
.companies-section{display:flex;flex-direction:column;gap:12px;align-items:center;width:100%}
.companies-label{font-size:12px;color:var(--accent);font-weight:700;text-transform:uppercase;letter-spacing:0.5px}

/* Companies logos section */
.companies-logos{display:flex;gap:16px;align-items:center;justify-content:center;width:100%}
.company-logo{height:50px;object-fit:contain;padding:8px;border:2px solid rgba(139,92,246,0.25);border-radius:8px;background:rgba(255,255,255,0.5);transition:all .3s ease;cursor:pointer}
.company-logo:hover{transform:scale(1.15);box-shadow:0 8px 24px rgba(139,92,246,0.2);border-color:rgba(139,92,246,0.5)}

@media (max-width:920px){
  .profile-card-full{flex-direction:column;gap:24px;align-items:center}
  .profile-text{width:100%}
  .profile-stats{width:100%}
}

.preview-card{background:var(--muted-bg);padding:18px;border-radius:12px;margin-top:16px}
.preview-card h4{margin:0 0 6px 0}
.link-card{display:inline-block;margin-top:10px;color:var(--accent-600);font-weight:600;text-decoration:none}

.connect h2,.faq h2{margin-top:0}
.section{padding:18px 0;scroll-margin-top:var(--header-height)}

/* two alternating section backgrounds */
main > section:nth-child(odd){background:var(--section-bg-a)}
main > section:nth-child(even){background:var(--section-bg-b)}

/* footer background */
.site-footer{background:var(--footer-bg)}
.section-heading{font-size:28px;font-weight:700;margin-bottom:25px;padding-bottom:8px;position:relative}

.top-questions-page{background:var(--section-bg-a)}
.top-questions-intro{padding:0 28px 16px}
.top-questions-nav{display:flex;gap:12px;margin-top:16px;flex-wrap:wrap}
.nav-btn{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:5px;background:var(--accent-600);color:white;border:1px solid rgba(139,92,246,0.3);font-weight:700;font-size:14px;text-decoration:none;cursor:pointer;transition:all .22s ease}
.nav-btn:hover{background:var(--accent-800);color:white;border-color:var(--accent-600);transform:scale(1.05);border-radius:0px;box-shadow:0 8px 20px rgba(109,40,217,0.2)}
.top-questions-root{display:flex;flex-direction:column;gap:0}
.list-block{background:var(--section-bg-b);border:none;box-shadow:none;padding:32px 0;overflow:visible}
.list-block:nth-child(even){background:var(--section-bg-a)}
.list-block + .list-block{margin-top:0}
.list-title{font-size:28px;font-weight:700;margin:12px 0 12px 0;padding:0 28px;padding-top:0;color:var(--text)}
.list-copy{max-width:860px;margin:8px 28px 20px;padding:0;color:var(--muted-text)}
.table-frame{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:5px;margin:0 28px 20px}
.topic-table{width:100%;border-collapse:collapse;min-width:720px;background:rgba(255,255,255,0.98);box-shadow:0 18px 40px rgba(15,23,42,0.08);overflow:hidden}
.topic-table thead{background:rgba(139,92,246,0.12)}
.topic-table th,.topic-table td{padding:16px 18px;vertical-align:middle;border-bottom:1px solid rgba(15,23,42,0.08)}
.topic-table th{font-size:15px;color:var(--text);white-space:nowrap;text-align:left;border-right:none;transition:background .2s ease}
.topic-table th:hover{background:rgba(139,92,246,0.2)}
.topic-table tbody tr:nth-child(odd){background:rgba(251,247,255,0.92)}
.topic-table tbody tr:nth-child(even){background:#ffffff}
.topic-table tbody tr:hover{background:rgba(139,92,246,0.08)}
.topic-table tbody td{color:#000000;font-size:14px}
.topic-table .col-sno{color:var(--text);width:60px;text-align:center}
.topic-table .problem-link{color:#000000}
.topic-table .problem-link:hover{color:var(--accent-600)}
.topic-table .col-watch{text-align:center}
.topic-table .watch-link{color:#ef4444}
.topic-table .watch-link:hover{color:var(--accent-600)}
.difficulty-pill{display:inline-flex;align-items:center;justify-content:center;min-width:92px;padding:8px 12px;border-radius:999px;font-size:13px;text-transform:capitalize;letter-spacing:0.01em}
.difficulty-pill.easy{background:rgba(34,197,94,0.12);color:#166534}
.difficulty-pill.medium{background:rgba(234,179,8,0.16);color:#b45309}
.difficulty-pill.hard{background:rgba(239,68,68,0.12);color:#b91c1c}
.domain-tag{display:inline-block;padding:4px 10px;margin:3px;border-radius:4px;color:white;font-size:0.8em;font-weight:600;cursor:pointer;transition:all 0.3s cubic-bezier(0.4,0,0.2,1);box-shadow:0 2px 4px rgba(0,0,0,0.1)}.domain-tag:hover{transform:translateY(-2px) scale(1.08);box-shadow:0 6px 12px rgba(0,0,0,0.2)}
.table-link{display:inline-flex;align-items:center;gap:8px;text-decoration:none}
.table-link:hover i{transform:translateX(2px)}
.table-link i{transition:transform .2s ease}
.table-loading{color:var(--muted-text);font-size:15px}
@media (max-width:860px){.topic-table{min-width:0}.topic-table th,.topic-table td{padding:14px 12px}.list-title{padding:0 12px}.list-copy{margin:8px 12px}.table-frame{margin:0 12px 20px}}
@media (max-width:680px){.top-questions-nav{flex-direction:column}.nav-btn{width:100%}.topic-table th:last-child,.topic-table td:last-child{min-width:120px}}

.toast-message{
  position:fixed;
  bottom:24px;
  left:50%;
  transform:translateX(-50%) translateY(20px);
  background:linear-gradient(135deg, rgba(139,92,246,0.95), rgba(167,139,250,0.95));
  color:#f8f7ff;
  padding:12px 18px;
  border-radius:999px;
  box-shadow:0 18px 30px rgba(79, 43, 175, 0.24);
  opacity:0;
  pointer-events:none;
  z-index:2000;
  font-size:14px;
  letter-spacing:0.01em;
  max-width:calc(100vw - 32px);
  text-align:center;
  border:1px solid rgba(255,255,255,0.22);
}
.toast-message.toast-visible{
  animation:toastEnter 0.45s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  pointer-events:auto;
}
.toast-message.toast-exiting{
  animation:toastExit 0.6s cubic-bezier(0.7, 0, 0.84, 0) forwards;
  pointer-events:none;
}

/* removed separators — rely on alternating background colors for section separation */

/* reduce inner container padding for sections so headings sit closer to the top */
.section > .container{padding-top:12px;padding-bottom:18px}

.card{background:var(--card);padding:18px;border-radius:12px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease;border:1px solid rgba(139,92,246,0.12);display:flex;flex-direction:column}
.card:hover{transform:scale(1.05);box-shadow:0 32px 64px rgba(15,23,42,0.16)}
.card > p{flex-grow:1}
.card-recommended{position:relative;overflow:hidden}
.recommended-tag{position:absolute;right:-35px;background:linear-gradient(135deg,#ff6b6b,#ff8787);color:white;padding:6px 60px;font-weight:700;font-size:8px;text-transform:uppercase;letter-spacing:0.6px;transform:rotate(35deg);box-shadow:0 4px 12px rgba(255,107,107,0.3);z-index:10;width:180px;text-align:center;white-space:nowrap}

.book-slot{display:inline-flex;align-items:center;gap:10px;padding:8px 12px;border-radius:10px;background:white;border:1px solid rgba(15,23,42,0.06);color:var(--accent-600);font-weight:700;font-size:14px;text-decoration:none;transition:transform .15s ease,box-shadow .15s ease,background-color .15s ease;margin-top:auto;align-self:center}
.book-slot img{width:18px;height:18px}
.book-slot:hover{box-shadow:0 12px 30px rgba(109,40,217,0.08);background-color:var(--accent-600);color:white;border-radius:5px}
.duration-buttons{display:flex;gap:0;margin-top:auto;width:100%}
.duration-btn{flex:1;padding:8px 12px;border-radius:0;background:white;border:1px solid rgba(15,23,42,0.06);color:var(--accent-600);font-weight:700;text-decoration:none;transition:transform .15s ease,box-shadow .15s ease,background-color .15s ease,color .15s ease;text-align:center;font-size:13px;display:inline-flex;align-items:center;justify-content:center}
.duration-btn-first{border-radius:5px 0 0 5px}
.duration-btn:hover{box-shadow:0 12px 30px rgba(109,40,217,0.08);background-color:var(--accent-800);color:white;}
.duration-btn-featured{background:var(--accent-600);color:white;box-shadow:0 8px 24px rgba(109,40,217,0.2);border-radius:0 5px 5px 0}
.duration-btn-featured:hover{background:var(--accent-800);box-shadow:0 12px 32px rgba(109,40,217,0.3);}
.book-slot-inline{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:5px;background:white;border:1px solid rgba(139,92,246,0.2);color:var(--accent-600);text-decoration:none;transition:transform .15s ease,box-shadow .15s ease,background-color .15s ease;font-size:inherit}
.book-slot-inline:hover{background-color:var(--accent-600);color:white}
.cta-fallback{color:var(--muted-text);font-size:16px;line-height:1.6;margin-top:20px;text-align:center}
.services{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:14px}

.faq{margin-top:36px}
.accordion{
  background:var(--card);
  border-radius:16px;
  box-shadow:0 4px 20px rgba(15,23,42,0.08);
  border:1px solid rgba(139,92,246,0.1);
  padding:8px;
  display:flex;
  flex-direction:column;
  gap:8px;
}
.accordion-item{
  border:1px solid rgba(139,92,246,0.15);
  border-radius:12px;
  overflow:hidden;
  background:var(--card);
  transition:all .18s cubic-bezier(0.4,0,0.2,1);
}
.accordion-item:hover{
  border-color:rgba(139,92,246,0.3);
  box-shadow:0 2px 12px rgba(139,92,246,0.12);
}
.accordion-toggle{
  width:100%;
  text-align:left;
  padding:18px 20px;
  border:0;
  background:var(--card);
  font-weight:600;
  font-size:16px;
  cursor:pointer;
  border-radius:10px;
  color:var(--text);
  transition:all .18s ease;
  display:flex;
  align-items:center;
  justify-content:space-between;
  position:relative;
}
.accordion-toggle .accordion-icon{
  width:20px;
  height:20px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--accent);
  transition:transform .18s cubic-bezier(0.4,0,0.2,1),color .18s ease;
  flex-shrink:0;
  margin-left:12px;
}
.accordion-toggle::before{
  content:'';
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:4px;
  background:linear-gradient(180deg,var(--accent),var(--accent-600));
  border-radius:10px 0 0 10px;
  opacity:0;
  transition:opacity .18s ease;
}
.accordion-toggle:hover{
  color:var(--accent-600);
  background:rgba(139,92,246,0.04);
}
.accordion-toggle.open{
  color:var(--accent);
  background:rgba(139,92,246,0.06);
}
.accordion-toggle.open::before{
  opacity:1;
}
.accordion-toggle.open .accordion-icon{
  transform:rotate(-90deg);
  color:var(--accent-600);
}
.accordion-panel{
  padding:0 20px;
  max-height:0;
  overflow:hidden;
  transition:max-height .18s cubic-bezier(0.4,0,0.2,1),padding .18s cubic-bezier(0.4,0,0.2,1);
  background:rgba(139,92,246,0.04);
}
.accordion-panel.open{
  padding:16px 20px;
}
.accordion-panel p{
  margin:0;
  font-size:14px;
  color:var(--muted-text);
  line-height:1.6;
}

.site-footer{border-top:none;margin-top:0;padding:26px 0;background:var(--footer-bg)}
.footer-inner{display:flex;flex-direction:column;align-items:center;gap:18px;text-align:center}
.footer-connect{font-size:17px;font-weight:700;color:var(--text);margin-bottom:6px}
.footer-links{display:flex;gap:14px;align-items:center;justify-content:center;flex-wrap:wrap}
.footer-links a{display:inline-flex;align-items:center;gap:10px;padding:10px 18px;border-radius:5px;background:rgba(255,255,255,0.92);border:1px solid rgba(15,23,42,0.08);color:var(--text);text-decoration:none;font-size:14px;transition:transform .22s ease,background-color .22s ease,color .22s ease,box-shadow .22s ease;overflow:hidden}
.footer-links a:hover{background:var(--accent-600);color:#ffffff;transform:translateY(-1px);box-shadow:0 14px 32px rgba(109,40,217,0.14)}

.copyright{font-size:13px;color:rgba(82,96,106,0.9);font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;font-weight:500;letter-spacing:0.15px}

.social-icon{width:40px;height:40px;object-fit:contain;filter:grayscale(0);transition:transform .18s ease,filter .18s ease}
.social-icon:hover{transform:translateY(-3px);filter:grayscale(0)}

.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:none}

/* Floating List Navigator */
.list-navigator{
  position:fixed;
  bottom:32px;
  right:32px;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:14px;
  z-index:900;
  opacity:0;
  transform:translateX(120px);
  pointer-events:none;
  transition:opacity 0.4s ease, transform 0.4s ease;
}
.list-navigator.visible{
  opacity:1;
  transform:translateX(0);
  pointer-events:auto;
  animation:slideInRight 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.list-navigator.hidden{
  animation:slideOutRight 0.4s cubic-bezier(0.7, 0, 0.84, 0);
}
.nav-link{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:48px;
  height:48px;
  border-radius:15%;
  background:var(--accent-600);
  color:white;
  border:1px solid rgba(139,92,246,0.3);
  font-weight:700;
  font-size:16px;
  text-decoration:none;
  transition:all .25s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow:0 10px 28px rgba(109,40,217,0.18);
  cursor:pointer;
  overflow:hidden;
}
.nav-link:hover{
  background:linear-gradient(135deg, #7c3aed, #5b21b6);
  transform:translateY(-2px) scale(1.02);
  box-shadow:0 12px 34px rgba(92, 33, 182, 0.22);
}
.nav-link:active{
  transform:translateY(0) scale(0.98);
  box-shadow:0 6px 16px rgba(109,40,217,0.2);
}
.nav-link i{
  font-size:18px;
  transition:transform .2s ease;
}
.nav-link:hover i{
  transform:scale(1.08);
}
.nav-link:disabled,
.nav-link[disabled]{
  opacity:0.55;
  cursor:not-allowed;
  background:rgba(139,92,246,0.8);
  box-shadow:none;
}

@media (max-width:920px){
  .hero{grid-template-columns:1fr;}
  .services{grid-template-columns:1fr}
  .site-nav{display:none}
  .container{padding:18px}
  .list-navigator{
    width:130px;
    bottom:24px;
    right:24px;
    gap:10px;
  }
  .nav-link{
    width:36px;
    height:36px;
  }
  .nav-link:hover{
    width:100%;
  }
}

@media (max-width:560px){
  .site-title{font-size:28px}
  .profile-card .avatar{width:76px;height:76px}
  .list-navigator{
    width:120px;
    bottom:16px;
    right:16px;
    gap:8px;
  }
  .nav-link{
    width:32px;
    height:32px;
  }
  .nav-link:hover{
    width:100%;
  }
  .nav-link i{
    font-size:14px;
  }
}