/* ====================================================
   AI School of India — Shared Stylesheet
   ==================================================== */
:root{
  --navy:#0F2D3D;
  --navy-deep:#0A1F2B;
  --paper:#FAF7F1;
  --paper-dim:#F1ECE2;
  --ink:#1C2624;
  --ink-soft:#5B655F;
  --teal:#0F7173;
  --teal-light:#E2F0EF;
  --teal-deep:#0A4F50;
  --amber:#B5650A;
  --amber-light:#FBEEDD;
  --amber-deep:#8A4D08;
  --line:#DDD6C7;
  --radius:14px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--paper);color:var(--ink);font-family:'Inter',sans-serif;-webkit-font-smoothing:antialiased;}
h1,h2,h3,h4,h5{font-family:'Sora',sans-serif;margin:0;}
p{margin:0;}
a{color:inherit;}
img{max-width:100%;display:block;}
.wrap{max-width:1180px;margin:0 auto;padding-left:28px;padding-right:28px;}

/* ====== NAV ====== */
.nav{position:sticky;top:0;z-index:100;background:rgba(250,247,241,.95);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);}
.nav-inner{max-width:1180px;margin:0 auto;padding:0 28px;height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:flex;align-items:center;gap:10px;font-family:'Sora',sans-serif;font-weight:700;font-size:17px;letter-spacing:-0.01em;color:var(--navy-deep);text-decoration:none;flex:none;}
.brand-mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--teal),var(--navy));display:flex;align-items:center;justify-content:center;color:#fff;font-family:'Sora',sans-serif;font-weight:800;font-size:14px;flex:none;}
.nav-links{display:flex;gap:6px;align-items:center;}
.nav-links a{text-decoration:none;font-size:14px;font-weight:500;color:var(--ink-soft);padding:7px 11px;border-radius:8px;transition:color .15s,background .15s;white-space:nowrap;}
.nav-links a:hover{color:var(--navy);background:var(--paper-dim);}
.nav-links a.active{color:var(--teal-deep);font-weight:600;background:var(--teal-light);}
.nav-right{display:flex;align-items:center;gap:10px;flex:none;}
.nav-social{display:flex;gap:8px;}
.nav-social a{width:32px;height:32px;border-radius:50%;background:var(--paper-dim);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;transition:background .15s;}
.nav-social a:hover{background:var(--teal-light);}
.nav-social svg{width:14px;height:14px;stroke:var(--navy);fill:var(--navy);}
.nav-social a:has(svg[fill="currentColor"]) svg{stroke:none;}
.btn-ghost{padding:8px 16px;border-radius:999px;border:1.5px solid var(--navy);font-size:13px;font-weight:600;background:transparent;color:var(--navy);cursor:pointer;text-decoration:none;white-space:nowrap;transition:background .15s,color .15s;}
.btn-ghost:hover{background:var(--navy);color:#fff;}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px;border-radius:8px;}
.hamburger span{display:block;width:22px;height:2px;background:var(--navy-deep);border-radius:2px;transition:transform .25s, opacity .25s;}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.open span:nth-child(2){opacity:0;}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-menu{display:none;flex-direction:column;background:#fff;border-top:1px solid var(--line);padding:12px 28px 20px;}
.mobile-menu a{text-decoration:none;font-size:15px;font-weight:500;color:var(--ink);padding:13px 0;border-bottom:1px solid var(--line);transition:color .15s;}
.mobile-menu a:last-child{border-bottom:none;}
.mobile-menu a:hover,.mobile-menu a.active{color:var(--teal-deep);}
.mobile-menu.open{display:flex;}
@media(max-width:940px){
  .nav-links{display:none;}
  .hamburger{display:flex;}
}
@media(max-width:560px){
  .btn-ghost{display:none;}
  .nav-social{display:none;}
}

/* ====== BUTTONS ====== */
.btn-primary{padding:13px 26px;border-radius:999px;border:none;background:var(--amber);color:#fff;font-family:'Inter',sans-serif;font-weight:700;font-size:14.5px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:8px;transition:transform .15s,box-shadow .15s;}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 8px 20px rgba(181,101,10,.35);}
.btn-primary-teal{background:var(--teal);}
.btn-primary-teal:hover{box-shadow:0 8px 20px rgba(15,113,115,.35);}
.btn-primary-dark{background:var(--navy);}
.btn-primary-dark:hover{box-shadow:0 8px 20px rgba(15,45,61,.3);}
.btn-outline-light{padding:13px 26px;border-radius:999px;border:1.5px solid rgba(255,255,255,.3);background:transparent;color:#fff;font-family:'Inter',sans-serif;font-weight:600;font-size:14.5px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:8px;transition:border-color .15s,background .15s;}
.btn-outline-light:hover{border-color:rgba(255,255,255,.7);background:rgba(255,255,255,.08);}

/* ====== PAGE HERO BANNER ====== */
.page-hero{background:var(--navy-deep);color:#fff;padding:68px 28px 64px;position:relative;overflow:hidden;text-align:center;}
.page-hero::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 70% 20%, rgba(15,113,115,.35), transparent 55%),radial-gradient(circle at 15% 80%, rgba(181,101,10,.2), transparent 50%);pointer-events:none;}
.page-hero-inner{position:relative;max-width:760px;margin:0 auto;}
.page-hero .eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:.05em;color:#9FD8D6;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);padding:6px 14px;border-radius:999px;margin-bottom:20px;}
.page-hero .eyebrow::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--teal);flex:none;}
.page-hero h1{font-size:clamp(28px,4vw,44px);line-height:1.1;letter-spacing:-0.02em;font-weight:800;margin-bottom:14px;}
.page-hero h1 em{font-style:normal;color:#6FD2CE;}
.page-hero p{font-size:16px;color:rgba(255,255,255,.7);line-height:1.6;max-width:55ch;margin:0 auto;}

/* ====== SECTION UTILS ====== */
.section{padding:80px 28px;}
.section-alt{background:var(--paper-dim);}
.section-dark{background:var(--navy-deep);color:#fff;}
.section-head{max-width:640px;margin:0 auto 48px;text-align:center;}
.section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:.04em;background:var(--teal-light);color:var(--teal-deep);padding:6px 12px;border-radius:999px;margin-bottom:14px;}
.section-head .eyebrow::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--teal);}
.section-dark .section-head .eyebrow{background:rgba(255,255,255,.08);color:#9FD8D6;border:1px solid rgba(255,255,255,.14);}
.section-head h2{font-size:clamp(26px,3.2vw,36px);letter-spacing:-0.02em;color:var(--navy-deep);}
.section-dark .section-head h2{color:#fff;}
.section-head p{font-size:15px;color:var(--ink-soft);margin-top:12px;line-height:1.65;}
.section-dark .section-head p{color:rgba(255,255,255,.6);}

/* ====== CTA SECTION ====== */
.cta-section{position:relative;background:linear-gradient(160deg,var(--teal-deep),var(--navy-deep));color:#fff;text-align:center;overflow:hidden;}
.cta-section::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 50% 0%,rgba(255,255,255,.07),transparent 60%);pointer-events:none;}
.cta-inner{position:relative;max-width:680px;margin:0 auto;padding:80px 28px;}
.cta-inner h2{font-size:clamp(26px,3.4vw,38px);letter-spacing:-0.02em;margin-bottom:14px;}
.cta-inner p{font-size:15px;color:rgba(255,255,255,.72);line-height:1.65;margin-bottom:32px;}
.cta-buttons{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* ====== FOOTER ====== */
footer{background:var(--navy-deep);color:rgba(255,255,255,.6);border-top:1px solid rgba(255,255,255,.06);}
.footer-grid{max-width:1180px;margin:0 auto;padding:54px 28px 40px;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand-col .footer-brand{display:flex;align-items:center;gap:10px;font-family:'Sora',sans-serif;font-weight:700;font-size:16px;color:#fff;margin-bottom:14px;}
.footer-desc{font-size:13.5px;line-height:1.65;color:rgba(255,255,255,.5);max-width:30ch;margin-bottom:22px;}
.footer-social{display:flex;gap:10px;}
.footer-social a{width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;transition:background .15s,border-color .15s;}
.footer-social a:hover{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.25);}
.footer-social svg{width:15px;height:15px;stroke:#fff;fill:#fff;}
.footer-col h4{font-family:'JetBrains Mono',monospace;font-size:11px;text-transform:uppercase;letter-spacing:.07em;color:rgba(255,255,255,.35);margin-bottom:18px;font-weight:500;}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:13.5px;color:rgba(255,255,255,.6);text-decoration:none;transition:color .15s;}
.footer-col a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.07);padding:18px 28px;}
.footer-bottom-inner{max-width:1180px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;font-size:12.5px;color:rgba(255,255,255,.35);}
.footer-bottom-inner a{color:rgba(255,255,255,.35);text-decoration:none;transition:color .15s;}
.footer-bottom-inner a:hover{color:rgba(255,255,255,.7);}
@media(max-width:860px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .footer-brand-col{grid-column:1/-1;}
  .footer-desc{max-width:100%;}
}
@media(max-width:560px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-brand-col{grid-column:auto;}
}