/* ============================================
   RAJVALLI MATHS TUITION CENTRE — Premium CSS
   ============================================ */

:root{
  --primary:#0F172A;
  --secondary:#2563EB;
  --accent:#F97316;
  --bg:#F8FAFC;
  --card:#FFFFFF;
  --text:#111827;
  --text-muted:#6B7280;
  --glass-bg: rgba(255,255,255,0.65);
  --glass-border: rgba(255,255,255,0.4);
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:10px;
  --shadow-sm: 0 2px 10px rgba(15,23,42,0.06);
  --shadow-md: 0 10px 30px rgba(15,23,42,0.10);
  --shadow-lg: 0 25px 60px rgba(15,23,42,0.16);
  --ease: cubic-bezier(.22,1,.36,1);
  --font-display:'Poppins', sans-serif;
  --font-body:'Inter', sans-serif;
}

*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%; display:block;}
a{text-decoration:none; color:inherit;}
ul{list-style:none;}
button{font-family:inherit; cursor:pointer; border:none; background:none;}
.container{width:100%; max-width:1200px; margin:0 auto; padding:0 24px;}
section{padding:110px 0;}
h1,h2,h3,h4{font-family:var(--font-display); color:var(--primary); font-weight:600; letter-spacing:-0.02em;}

/* Scroll reveal */
.reveal{opacity:0; transform:translateY(36px); transition: opacity .8s var(--ease), transform .8s var(--ease);}
.reveal.is-visible{opacity:1; transform:translateY(0);}

/* Eyebrow / section heading */
.eyebrow{
  display:inline-block; font-family:var(--font-display); font-size:13px; font-weight:600;
  letter-spacing:.16em; text-transform:uppercase; color:var(--secondary);
  background: rgba(37,99,235,0.08); padding:6px 16px; border-radius:99px; margin-bottom:18px;
}
.section-head{text-align:center; max-width:680px; margin:0 auto 60px;}
.section-head h2{font-size:clamp(28px,4vw,42px); margin-bottom:14px;}
.section-head p{color:var(--text-muted); font-size:17px;}

/* ===== Loading Screen ===== 
#loader{
  position:fixed; inset:0; z-index:9999; background:var(--primary);
  display:flex; align-items:center; justify-content:center; flex-direction:column; gap:18px;
  transition: opacity .6s var(--ease), visibility .6s var(--ease);
}
#loader.hidden{opacity:0; visibility:hidden;}
.loader-mark{font-family:var(--font-display); color:#fff; font-size:26px; font-weight:700; letter-spacing:.05em;}
.loader-bar{width:160px; height:3px; background:rgba(255,255,255,0.15); border-radius:99px; overflow:hidden;}
.loader-bar span{display:block; height:100%; width:0%; background:linear-gradient(90deg,var(--secondary),var(--accent)); animation: loadbar 1.4s var(--ease) forwards;}
@keyframes loadbar{to{width:100%;}} */

#loader{
  position:fixed; inset:0; z-index:9999; background:var(--primary);
  display:flex; align-items:center; justify-content:center; flex-direction:column; gap:10px;
  transition: opacity .6s var(--ease), visibility .6s var(--ease);
}
#loader.hidden{opacity:0; visibility:hidden;}
.loader-logo{width:74px; height:74px; object-fit:contain; animation: spin-pulse 2.2s ease-in-out infinite;}
@keyframes spin-pulse{0%,100%{transform:scale(1) rotate(0deg);}50%{transform:scale(1.08) rotate(8deg);}}
.loader-mark{font-family:var(--font-display); color:#fff; font-size:26px; font-weight:700; letter-spacing:.05em;}
.loader-tagline{font-family:var(--font-display); color:var(--accent); font-size:12px; font-weight:600; letter-spacing:.15em; margin-bottom:6px;}
.loader-symbols{display:flex; gap:14px; margin-bottom:6px;}
.loader-symbols span{
  font-family:var(--font-display); color:#fff; font-size:19px; font-weight:600; opacity:.35;
  animation: symbol-pop 1.6s ease-in-out infinite;
}
.loader-symbols span:nth-child(1){animation-delay:0s;}
.loader-symbols span:nth-child(2){animation-delay:.15s;}
.loader-symbols span:nth-child(3){animation-delay:.3s;}
.loader-symbols span:nth-child(4){animation-delay:.45s;}
.loader-symbols span:nth-child(5){animation-delay:.6s;}
.loader-symbols span:nth-child(6){animation-delay:.75s;}
@keyframes symbol-pop{0%,100%{opacity:.35; transform:translateY(0);}50%{opacity:1; transform:translateY(-6px); color:var(--accent);}}
.loader-bar{width:160px; height:3px; background:rgba(255,255,255,0.15); border-radius:99px; overflow:hidden;}
.loader-bar span{display:block; height:100%; width:0%; background:linear-gradient(90deg,var(--secondary),var(--accent)); animation: loadbar 1.4s var(--ease) forwards;}
@keyframes loadbar{to{width:100%;}}
.loader-text{font-family:var(--font-body); color:#94A3B8; font-size:12.5px; letter-spacing:.06em; margin-top:4px;}

/* ===== Scroll progress ===== */
#scroll-progress{position:fixed; top:0; left:0; height:3px; background:linear-gradient(90deg,var(--secondary),var(--accent)); z-index:1001; width:0%;}

/* ===== Nav ===== */
.navbar{
  position:fixed; top:0; left:0; width:100%; z-index:1000;
  padding:18px 0; transition: all .4s var(--ease);
}
.navbar .nav-inner{
  display:flex; align-items:center; justify-content:space-between;
  background: rgba(255,255,255,0.0);
  border-radius: 99px;
  padding: 10px 14px 10px 18px;
  transition: all .4s var(--ease);
}
.navbar.scrolled{padding:10px 0;}
.navbar.scrolled .nav-inner{
  background: var(--glass-bg);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border:1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
}
.nav-logo{display:flex; align-items:center; gap:10px; font-family:var(--font-display); font-weight:700; font-size:18px; color:var(--primary);}
.nav-logo img{height:38px; width:38px; border-radius:10px; object-fit:cover;}
.nav-logo .tag{display:block; font-family:var(--font-body); font-weight:500; font-size:10.5px; letter-spacing:.1em; text-transform:uppercase; color:var(--accent);}
.nav-links{display:flex; align-items:center; gap:6px;}
.nav-links a{
  font-size:14.5px; font-weight:500; color:var(--primary); padding:9px 16px; border-radius:99px;
  transition: all .3s var(--ease); position:relative;
}
.nav-links a:hover, .nav-links a:focus-visible{background:rgba(37,99,235,0.08); color:var(--secondary);}
.nav-cta{
  background: var(--primary); color:#fff !important; padding:10px 22px !important; font-weight:600 !important;
  margin-left:6px; box-shadow: var(--shadow-sm);
}
.nav-cta:hover{background:var(--secondary) !important; transform:translateY(-1px);}
.nav-toggle{display:none; flex-direction:column; gap:5px; width:40px; height:40px; align-items:center; justify-content:center; border-radius:10px;}
.nav-toggle span{display:block; width:22px; height:2px; background:var(--primary); transition:.3s;}

/* ===== Hero ===== */
.hero{
  position:relative; min-height:100vh; display:flex; align-items:center;
  padding-top:120px;
  background:
    radial-gradient(circle at 85% 12%, rgba(249,115,22,0.45), transparent 42%),
    radial-gradient(circle at 8% 88%, rgba(56,189,248,0.35), transparent 45%),
    linear-gradient(135deg, #0B1224 0%, #14245B 30%, #1E3A8A 60%, #2563EB 100%);
  color:#fff; overflow:hidden;
}
.hero::after{
  content:""; position:absolute; inset:0; pointer-events:none;
  background: radial-gradient(circle at 80% 20%, rgba(37,99,235,0.35), transparent 50%), radial-gradient(circle at 10% 90%, rgba(249,115,22,0.22), transparent 45%);
}
.hero-inner{position:relative; z-index:2; text-align:center; max-width:900px; margin:0 auto;}
.hero .eyebrow{background:rgba(255,255,255,0.14); color:#fff; backdrop-filter:blur(6px);}

.hero-banner-card{
  margin:30px auto 30px; max-width:900px; background:#fff; border-radius:var(--radius-lg);
  padding:22px; box-shadow: 0 30px 70px rgba(0,0,0,0.35); border:1px solid rgba(255,255,255,0.5);
}
.hero-banner-card img{width:auto; height:auto; border-radius:12px;}
.hero h1{
  font-size:clamp(38px,6.4vw,72px); line-height:1.05; color:#fff; margin-bottom:6px;
}
.hero h1 .small{display:block; font-size:.34em; font-weight:500; color:#CBD5E1; letter-spacing:.04em; margin-top:14px;}
.hero .tagline{
  font-family:var(--font-display); font-size:clamp(16px,2vw,20px); letter-spacing:.12em; text-transform:uppercase;
  color:var(--accent); font-weight:600; margin:18px 0 30px;
}
.hero-stats{display:flex; flex-wrap:wrap; justify-content:center; gap:14px; margin-bottom:38px;}
.hero-stats .pill{
  background: rgba(255,255,255,0.08); border:1px solid rgba(255,255,255,0.18); backdrop-filter:blur(8px);
  padding:10px 18px; border-radius:99px; font-size:14px; font-weight:500; color:#E2E8F0;
}
.hero-btns{display:flex; flex-wrap:wrap; gap:14px; justify-content:center; margin-bottom:64px;}
.btn{
  display:inline-flex; align-items:center; gap:8px; padding:15px 30px; border-radius:99px;
  font-weight:600; font-size:15px; transition: all .35s var(--ease);
}
.btn-primary{background: var(--accent); color:#fff; box-shadow:0 10px 25px rgba(249,115,22,0.35);}
.btn-primary:hover{transform:translateY(-3px); box-shadow:0 16px 32px rgba(249,115,22,0.45);}
.btn-outline{background:rgba(255,255,255,0.08); color:#fff; border:1px solid rgba(255,255,255,0.35); backdrop-filter:blur(8px);}
.btn-outline:hover{background:rgba(255,255,255,0.18); transform:translateY(-3px);}
.btn-secondary{background:#fff; color:var(--primary);}
.btn-secondary:hover{transform:translateY(-3px); box-shadow:var(--shadow-md);}

.hero-counters{
  display:grid; grid-template-columns:repeat(4,1fr); gap:18px; max-width:880px; margin:0 auto;
  background: rgba(255,255,255,0.06); border:1px solid rgba(255,255,255,0.15); backdrop-filter:blur(10px);
  border-radius: var(--radius-lg); padding:30px 20px;
}
.hero-counters .stat{text-align:center;}
.hero-counters .num{font-family:var(--font-display); font-size:clamp(26px,3.4vw,38px); font-weight:700; color:#fff;}
.hero-counters .num span{color:var(--accent);}
.hero-counters .label{font-size:12.5px; color:#CBD5E1; text-transform:uppercase; letter-spacing:.08em; margin-top:4px;}

.scroll-cue{position:absolute; bottom:26px; left:50%; transform:translateX(-50%); z-index:2; color:rgba(255,255,255,0.7); display:flex; flex-direction:column; align-items:center; gap:8px; font-size:11px; letter-spacing:.1em; text-transform:uppercase;}
.scroll-cue .line{width:1px; height:30px; background:rgba(255,255,255,0.4); position:relative; overflow:hidden;}
.scroll-cue .line::after{content:""; position:absolute; top:-30px; left:0; width:100%; height:30px; background:var(--accent); animation:scrolldown 1.8s infinite;}
@keyframes scrolldown{to{top:30px;}}

/* ===== About ===== */
.about{background:var(--bg);}
.about-grid-new{display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:22px; margin-top:10px;}
.about-feature{padding:30px 26px; text-align:left;}
.about-feature .ico{font-size:28px; margin-bottom:14px;}
.about-feature h3{font-size:18px; margin-bottom:8px;}
.about-feature p{color:var(--text-muted); font-size:14.5px;}

/* ===== Cards generic ===== */
.card{
  background:var(--card); border-radius:var(--radius-md); box-shadow:var(--shadow-sm);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.card:hover{transform:translateY(-8px); box-shadow:var(--shadow-lg);}

/* ===== Faculty ===== */
.faculty{background:#fff;}
.faculty-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:30px;}
.faculty-card{overflow:hidden; text-align:center; padding-bottom:28px;}
.faculty-photo{width:100%; aspect-ratio:1/1; overflow:hidden; border-radius:var(--radius-md) var(--radius-md) 0 0;}
.faculty-photo img{width:100%; height:100%; object-fit:cover; transition: transform .6s var(--ease);}
.faculty-card:hover .faculty-photo img{transform:scale(1.06);}
.faculty-card h3{margin-top:22px; font-size:21px;}
.faculty-card .role{color:var(--secondary); font-weight:600; font-size:13.5px; text-transform:uppercase; letter-spacing:.06em; margin:6px 0;}
.faculty-card .exp{display:inline-block; margin-top:8px; background:rgba(249,115,22,0.1); color:var(--accent); font-size:12.5px; font-weight:700; padding:5px 14px; border-radius:99px;}

/* ===== Courses ===== */
.courses{background:var(--bg);}
.course-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:22px;}
.course-card{padding:30px 26px; position:relative; overflow:hidden;}
.course-card .grade{font-family:var(--font-display); font-size:30px; font-weight:700; color:var(--primary);}
.course-card .subj{color:var(--text-muted); font-size:13.5px; margin-top:6px; text-transform:uppercase; letter-spacing:.06em;}
.course-card .bar{height:3px; width:36px; background:var(--accent); border-radius:99px; margin-top:16px; transition:width .4s var(--ease);}
.course-card:hover .bar{width:60px;}

/* ===== Achievement counters band ===== */
.counters-band{
  background: linear-gradient(120deg, var(--primary), #1E293B);
  color:#fff; padding:80px 0;
}
.counters-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:20px; text-align:center;}
.counters-grid .num{font-family:var(--font-display); font-size:clamp(30px,4vw,46px); font-weight:700;}
.counters-grid .num span{color:var(--accent);}
.counters-grid .label{color:#94A3B8; font-size:13.5px; text-transform:uppercase; letter-spacing:.07em; margin-top:6px;}

/* ===== Results & Gallery (shared grid styles) ===== */
.media-section{background:#fff;}
.media-grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:22px;}
.media-card{position:relative; overflow:hidden; border-radius:var(--radius-md); cursor:pointer; box-shadow:var(--shadow-sm);}
.media-card img{width:100%; height:260px; object-fit:cover; transition: transform .6s var(--ease); display:block;}
.media-card:hover img{transform:scale(1.08);}
.media-card .overlay{
  position:absolute; inset:0; background:linear-gradient(0deg, rgba(15,23,42,0.65), transparent 55%);
  opacity:0; transition: opacity .35s var(--ease); display:flex; align-items:flex-end; padding:16px; color:#fff; font-size:13px; font-weight:600;
}
.media-card:hover .overlay{opacity:1;}
.media-empty{grid-column:1/-1; text-align:center; color:var(--text-muted); padding:50px 20px; border:1.5px dashed #CBD5E1; border-radius:var(--radius-md); font-size:14.5px;}

/* Masonry for gallery */
.masonry{column-count:3; column-gap:22px;}
.masonry .media-card{margin-bottom:22px; break-inside:avoid; width:100%;}
.masonry .media-card img{height:auto;}
@media(max-width:900px){.masonry{column-count:2;}}
@media(max-width:560px){.masonry{column-count:1;}}

/* Lightbox */
#lightbox{
  position:fixed; inset:0; background:rgba(15,23,42,0.94); z-index:2000; display:none;
  align-items:center; justify-content:center; padding:30px;
}
#lightbox.active{display:flex;}
#lightbox img{max-width:90vw; max-height:85vh; border-radius:12px; box-shadow:0 30px 60px rgba(0,0,0,.5);}
#lightbox .lb-close{position:absolute; top:24px; right:30px; color:#fff; font-size:32px; cursor:pointer; line-height:1;}
#lightbox .lb-nav{position:absolute; top:50%; transform:translateY(-50%); color:#fff; font-size:34px; cursor:pointer; padding:10px 16px; user-select:none;}
#lightbox .lb-prev{left:10px;} #lightbox .lb-next{right:10px;}

/* ===== Reviews ===== */
.reviews{background:var(--bg;); text-align:center;}

/* ===== Areas Served ===== */
.areas{background:#fff; text-align:center;}
.areas-row{display:flex; flex-wrap:wrap; justify-content:center; gap:12px; max-width:800px; margin:0 auto;}
.area-chip{
  background:var(--bg); border:1px solid rgba(37,99,235,0.15); color:var(--primary); font-weight:600; font-size:14px;
  padding:11px 22px; border-radius:99px; transition: all .3s var(--ease);
}
.area-chip:hover{background:var(--secondary); color:#fff; transform:translateY(-3px);}

/* ===== Screen-reader only ===== */
.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden;
  clip:rect(0,0,0,0); white-space:nowrap; border:0;
}

/* ===== Enquiry Form ===== */
.enquiry{background:var(--bg);}
.enquiry-form{max-width:760px; margin:0 auto; background:var(--card); padding:40px; border-radius:var(--radius-lg); box-shadow:var(--shadow-md);}
.form-grid{display:grid; grid-template-columns:1fr 1fr; gap:20px;}
.f-field{display:flex; flex-direction:column; gap:6px;}
.f-field.form-full{grid-column:1/-1;}
.f-field label{font-size:13.5px; font-weight:600; color:var(--primary);}
.f-field input, .f-field select{
  padding:12px 14px; border:1.5px solid #E2E8F0; border-radius:var(--radius-sm);
  font-family:var(--font-body); font-size:14.5px; color:var(--text); background:#fff;
  transition: border-color .25s var(--ease);
}
.f-field input:focus, .f-field select:focus{outline:none; border-color:var(--secondary);}
.enquiry-form .btn{width:100%; justify-content:center; margin-top:28px; border:none;}
.enquiry-form .btn[disabled]{opacity:.6; cursor:not-allowed;}
.enquiry-msg{margin-top:14px; text-align:center; font-size:14.5px; font-weight:600;}
.enquiry-msg.success{color:#16A34A;}
.enquiry-msg.error{color:#DC2626;}
@media(max-width:640px){
  .form-grid{grid-template-columns:1fr;}
  .enquiry-form{padding:26px 20px;}
}

/* ===== Contact (legacy, kept for compatibility) ===== */
.contact{background:#fff;}

/* ===== Footer map / hit counter ===== */
.footer-top{padding-bottom:36px; border-bottom:1px solid rgba(255,255,255,0.1);}
.footer-map{margin-top:36px; border-radius:var(--radius-md); overflow:hidden; box-shadow:var(--shadow-md); min-height:280px;}
.footer-map iframe{width:100%; height:300px; min-height:300px; border:0; display:block; filter:saturate(0.9);}
.hit-counter{display:inline-flex; align-items:center;}
.hit-counter img{height:20px; vertical-align:middle; border-radius:4px;}


/* ===== Floating WhatsApp ===== */
.float-whatsapp{
  position:fixed; bottom:26px; right:26px; z-index:999; width:60px; height:60px; border-radius:50%;
  background:#25D366; display:flex; align-items:center; justify-content:center; box-shadow:0 12px 28px rgba(37,211,102,0.45);
  transition: transform .3s var(--ease);
}
.float-whatsapp:hover{transform:scale(1.1);}
.float-whatsapp svg{width:30px; height:30px; fill:#fff;}
.pulse-ring{position:absolute; inset:0; border-radius:50%; border:2px solid #25D366; animation:pulse 2s infinite;}
@keyframes pulse{0%{transform:scale(1); opacity:.7;}100%{transform:scale(1.6); opacity:0;}}

/* ===== Back to top ===== */
#back-to-top{
  position:fixed; bottom:26px; left:26px; z-index:999; width:48px; height:48px; border-radius:50%;
  background:var(--primary); color:#fff; display:flex; align-items:center; justify-content:center;
  opacity:0; visibility:hidden; transform:translateY(10px); transition:all .35s var(--ease); font-size:18px;
}
#back-to-top.show{opacity:1; visibility:visible; transform:translateY(0);}
#back-to-top:hover{background:var(--secondary);}

/* ===== Footer ===== */
footer{background:var(--primary); color:#CBD5E1; padding:60px 0 26px;}
.footer-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:40px; padding-bottom:36px; border-bottom:1px solid rgba(255,255,255,0.1);}
.footer-logo{display:flex; align-items:center; gap:10px; color:#fff; font-family:var(--font-display); font-weight:700; font-size:19px; margin-bottom:14px;}
.footer-logo img{height:38px; width:38px; border-radius:10px; object-fit:cover;}
footer h4{color:#fff; font-size:25px; margin-bottom:16px;}
footer .flinks a{display:block; color:#94A3B8; font-size:14px; padding:5px 0; transition:.25s;}
footer .flinks a:hover{color:var(--accent); padding-left:4px;}
.social-row{display:flex; gap:10px; margin-top:14px;}
.social-row a{width:38px; height:38px; border-radius:50%; background:rgba(255,255,255,0.08); display:flex; align-items:center; justify-content:center; transition:.3s;}
.social-row a:hover{background:var(--accent);}
.footer-bottom{display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; padding-top:22px; font-size:13.5px; color:#64748B;}

/* ===== Misc ===== */
.skip-link{position:absolute; left:-999px; top:0; background:#fff; padding:10px 16px; z-index:2000; border-radius:0 0 8px 0;}
.skip-link:focus{left:0;}
:focus-visible{outline:2px solid var(--accent); outline-offset:2px;}

/* ===== Responsive ===== */
@media(max-width:980px){
  .hero-counters{grid-template-columns:repeat(2,1fr);}
  .counters-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media(max-width:760px){
  section{padding:80px 0;}
  .nav-links{
    position:fixed; top:0; right:-100%; height:100vh; width:78%; max-width:320px; background:#fff;
    flex-direction:column; align-items:flex-start; padding:100px 30px 30px; box-shadow:-10px 0 40px rgba(0,0,0,.15);
    transition: right .4s var(--ease);
  }
  .nav-links.open{right:0;}
  .nav-links a{width:100%; padding:14px 10px;}
  .nav-toggle{display:flex;}
  .nav-cta{margin:10px 0 0;}
  .hero-banner-card{padding:14px; margin-top:18px;}
  .masonry{column-count:1;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column; text-align:center;}
}
@media(prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important; transition-duration:0.001ms !important;}
}