/* ============================================================
   DIIT — Drishti Institute of Information Technology, Hisar
   Brand System v2  ·  Master brand (Sora / Inter / Mukta)
   Teal-led · Navy base · Vermilion = one CTA per screen
   ============================================================ */

:root{
  /* core */
  --teal:#17688D;          /* primary — logo */
  --teal-bright:#1E86B4;   /* links / screens */
  --teal-tint:#E2F0F6;     /* soft fills */
  --ink:#0F1B2D;           /* dark base */
  --vermilion:#E2533B;     /* accent / CTA only */
  --amber:#F5A623;         /* highlight / badges */
  --sand:#FAF7F2;          /* warm light bg */
  --paper:#FFFFFF;         /* cards / surfaces */
  --slate:#1E293B;         /* body text */
  --mist:#64748B;          /* secondary text */
  --line:#E7E2DA;          /* warm hairline */
  --line-cool:#E2E8F0;     /* cool hairline */
  /* AI sub-brand (internship only) */
  --code:#13C2A6;
  --maxw:1140px;
  --radius:14px;
  --shadow:0 1px 2px rgba(15,27,45,.05);
  --shadow-md:0 8px 28px rgba(15,27,45,.10);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{font-family:'Inter',system-ui,sans-serif;color:var(--slate);background:var(--sand);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--teal);text-decoration:none}
a:hover{color:var(--teal-bright)}
h1,h2,h3,h4,.display{font-family:'Sora',sans-serif;letter-spacing:-.02em;color:var(--ink);line-height:1.12}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.hi{font-family:'Mukta',sans-serif}

/* ---- skip link ---- */
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:1000;border-radius:0 0 8px 0}
.skip:focus{left:0;color:#fff}

/* =========== TOP BAR =========== */
.topbar{background:var(--ink);color:#A9BACA;font-size:13px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:7px 24px;flex-wrap:wrap}
.topbar a{color:#A9BACA}
.topbar a:hover{color:var(--teal-bright)}
.topbar .tb-left span,.topbar .tb-right a{display:inline-flex;align-items:center;gap:6px;margin-right:18px}
.topbar .tb-right{display:flex;align-items:center}
.topbar svg{width:14px;height:14px;flex:none}

/* =========== HEADER / NAV =========== */
.site-header{position:sticky;top:0;z-index:900;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:10px 24px;max-width:var(--maxw);margin:0 auto}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand img{width:auto;display:block}
.brand .logo-diit{height:40px}
.brand .logo-nielit{height:58px}
.brand .bsep{width:1px;height:44px;background:var(--line)}
.brand .btxt b{font-family:'Sora';font-weight:700;color:var(--teal);font-size:19px;display:block;line-height:1}
.brand .btxt small{font-size:10.5px;letter-spacing:.04em;color:var(--mist);text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:4px;list-style:none;flex-wrap:wrap}
.nav-links a{font-family:'Inter';font-weight:500;font-size:14.5px;color:var(--slate);padding:9px 12px;border-radius:8px;white-space:nowrap}
.nav-links a:hover{background:var(--teal-tint);color:var(--teal)}
.nav-links a.active{color:var(--teal);font-weight:600}
.nav-cta{background:var(--vermilion);color:#fff !important;font-family:'Sora';font-weight:600;padding:10px 18px;border-radius:10px}
.nav-cta:hover{background:#cf452e;color:#fff !important}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:8px;cursor:pointer}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--ink);margin:4px 0;transition:.25s}

/* =========== BUTTONS =========== */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:'Sora';font-weight:600;font-size:15px;border-radius:10px;padding:13px 24px;border:none;cursor:pointer;transition:.2s}
.btn-cta{background:var(--vermilion);color:#fff}
.btn-cta:hover{background:#cf452e;color:#fff;transform:translateY(-1px)}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{background:#125470;color:#fff}
.btn-ghost{background:transparent;color:var(--teal);border:1.6px solid var(--teal)}
.btn-ghost:hover{background:var(--teal);color:#fff}
.btn-ghost-light{background:transparent;color:#fff;border:1.6px solid rgba(255,255,255,.5)}
.btn-ghost-light:hover{background:#fff;color:var(--ink)}

/* =========== BADGES =========== */
.badge{display:inline-flex;align-items:center;gap:5px;font-family:'Inter';font-weight:600;font-size:11.5px;letter-spacing:.03em;padding:5px 11px;border-radius:999px}
.badge-amber{background:var(--amber);color:var(--ink)}
.badge-teal{background:var(--teal-tint);color:var(--teal)}
.badge-new{background:var(--vermilion);color:#fff}
.badge-ghost{background:transparent;border:1px solid var(--line-cool);color:var(--mist)}

/* =========== HERO / CAROUSEL =========== */
.hero{position:relative;background:var(--ink);overflow:hidden}
.hero-slides{position:absolute;inset:0}
.hero-slide{position:absolute;inset:0;opacity:0;transition:opacity 1.1s ease;background-size:cover;background-position:center}
.hero-slide.is-active{opacity:1}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(105deg,rgba(15,27,45,.94) 0%,rgba(15,27,45,.82) 42%,rgba(15,27,45,.55) 100%)}
.hero-inner{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;padding:78px 24px 86px;color:#fff}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:'Inter';font-weight:600;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--amber);border:1px solid #2A3A50;border-radius:999px;padding:6px 14px;background:rgba(255,255,255,.04)}
.hero h1{color:#fff;font-size:clamp(32px,5.4vw,56px);margin:18px 0 14px;max-width:760px}
.hero h1 .x{color:var(--vermilion)}
.hero p.sub{color:#C3D0DD;font-size:clamp(16px,2vw,19px);max-width:580px;margin-bottom:14px}
.hero .hi-sub{color:#9FB2C4;font-size:15px;max-width:580px;margin-bottom:26px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:30px}
.hero-stats{display:flex;gap:34px;flex-wrap:wrap}
.hero-stats .st b{font-family:'Sora';font-weight:700;font-size:28px;color:#fff;display:block;line-height:1}
.hero-stats .st span{font-size:13px;color:#9FB2C4}
.hero-dots{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);z-index:3;display:flex;gap:9px}
.hero-dots button{width:9px;height:9px;border-radius:50%;border:none;background:rgba(255,255,255,.4);cursor:pointer;padding:0}
.hero-dots button.is-active{background:var(--amber);width:26px;border-radius:5px}

/* =========== CIRCUIT TRACE DIVIDER =========== */
.trace{height:26px;color:var(--teal);background:var(--sand)}
.trace svg{width:100%;height:100%;display:block}

/* =========== SECTIONS =========== */
section{padding:64px 0}
.section-head{max-width:680px;margin-bottom:38px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.kicker{font-family:'Inter';font-weight:600;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--teal);margin-bottom:10px;display:inline-block}
.section-head h2{font-size:clamp(26px,3.6vw,38px);margin-bottom:10px}
.section-head p{color:var(--mist);font-size:16.5px}
.bg-paper{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.bg-ink{background:var(--ink);color:#C3D0DD}
.bg-ink h2,.bg-ink h3{color:#fff}
.bg-tint{background:var(--teal-tint)}

/* =========== CARDS GRID =========== */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:.2s}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
.card-pad{padding:24px}

/* course card */
.course-card{display:flex;flex-direction:column;height:100%}
.course-card .cc-top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;margin-bottom:12px}
.course-card h3{font-size:21px;color:var(--teal)}
.course-card .cc-desc{font-size:14.5px;color:var(--slate);margin:8px 0 16px;flex:1}
.course-card .cc-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.course-card .cc-meta .m{font-size:12.5px;color:var(--mist);background:var(--sand);border:1px solid var(--line);border-radius:7px;padding:4px 9px;display:inline-flex;gap:5px;align-items:center}
.course-card .cc-fee{font-family:'Sora';margin-bottom:14px}
.course-card .cc-fee .now{color:var(--ink);font-weight:700;font-size:20px}
.course-card .cc-fee .was{color:var(--mist);text-decoration:line-through;font-size:14px;margin-left:8px;font-weight:400}
.course-card .cc-fee .tbd{color:var(--mist);font-size:14px;font-weight:500}
.course-card a.cc-link{font-family:'Sora';font-weight:600;font-size:14px;color:var(--teal);display:inline-flex;align-items:center;gap:6px}

/* category band */
.cat-band{margin:46px 0 24px}
.cat-band h3{font-size:23px;margin-bottom:4px}
.cat-band p{color:var(--mist);font-size:15px}

/* feature / why card */
.feature{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px}
.feature .ico{width:46px;height:46px;border-radius:11px;background:var(--teal-tint);color:var(--teal);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.feature .ico svg{width:24px;height:24px}
.feature h3{font-size:18px;margin-bottom:7px}
.feature p{font-size:14.5px;color:var(--mist)}

/* =========== SPLIT (image + text) =========== */
.split{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center}
.split img{border-radius:var(--radius);box-shadow:var(--shadow-md);width:100%;height:100%;object-fit:cover;max-height:440px}
.split .stext h2{margin-bottom:14px}
.split .stext p{color:var(--slate);margin-bottom:14px;font-size:16px}
.checklist{list-style:none;margin:6px 0 22px}
.checklist li{position:relative;padding:7px 0 7px 30px;font-size:15.5px}
.checklist li::before{content:"";position:absolute;left:0;top:11px;width:18px;height:18px;border-radius:50%;background:var(--teal-tint);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2317688D' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center}

/* =========== STAT STRIP =========== */
.statstrip{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.statstrip .st b{font-family:'Sora';font-weight:700;font-size:clamp(30px,4vw,42px);color:var(--teal);display:block;line-height:1}
.statstrip .st span{font-size:14px;color:var(--mist)}
.bg-ink .statstrip .st b{color:var(--amber)}
.bg-ink .statstrip .st span{color:#9FB2C4}

/* =========== GALLERY =========== */
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.gallery-grid figure{position:relative;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--paper)}
.gallery-grid img{width:100%;height:240px;object-fit:cover;transition:.4s}
.gallery-grid figure:hover img{transform:scale(1.05)}
.gallery-grid figcaption{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(transparent,rgba(15,27,45,.8));color:#fff;font-size:13px;padding:22px 14px 11px;font-family:'Inter';font-weight:500}

/* =========== INTERNSHIP (AI sub-brand accent) =========== */
.ai-hero{background:var(--ink);color:#fff;overflow:hidden;position:relative}
.ai-hero .wrap{position:relative;z-index:2;padding:70px 24px}
.ai-tag{font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:.12em;color:var(--code);text-transform:uppercase}
.ai-hero h1{color:#fff;font-family:'Space Grotesk',sans-serif;font-size:clamp(32px,5.4vw,54px);margin:14px 0;max-width:720px}
.ai-hero h1 .g{color:var(--code)}
.ai-hero p{color:#C3D0DD;font-size:18px;max-width:560px;margin-bottom:24px}
.notice{background:var(--amber);color:var(--ink);text-align:center;font-weight:600;font-size:14.5px;padding:11px 24px}
.notice .hi{font-weight:700}
.track-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;display:flex;flex-direction:column;transition:.2s}
.track-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:var(--code)}
.track-card .tc-badge{font-family:'JetBrains Mono';font-size:11px;color:#0B7A6B;background:#D7F5EF;border-radius:6px;padding:3px 9px;align-self:flex-start;margin-bottom:12px}
.track-card h3{font-size:19px;margin-bottom:7px}
.track-card p{font-size:14px;color:var(--mist);flex:1;margin-bottom:14px}
.track-card .tc-meta{display:flex;gap:8px;flex-wrap:wrap;font-size:12.5px;color:var(--mist)}
.track-card .tc-meta span{background:var(--sand);border:1px solid var(--line);border-radius:6px;padding:3px 9px}

/* =========== BLOG =========== */
.blog-card{display:flex;flex-direction:column;height:100%}
.blog-card .bc-img{height:188px;object-fit:cover;width:100%}
.blog-card .bc-body{padding:22px;display:flex;flex-direction:column;flex:1}
.blog-card .bc-cat{font-size:11.5px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--teal);margin-bottom:8px}
.blog-card h3{font-size:19px;margin-bottom:9px;line-height:1.25}
.blog-card p{font-size:14.5px;color:var(--mist);flex:1;margin-bottom:14px}
.blog-card .bc-meta{font-size:12.5px;color:var(--mist)}

/* article */
.article{max-width:760px;margin:0 auto;padding:54px 24px}
.article .a-meta{color:var(--mist);font-size:14px;margin-bottom:26px}
.article h1{font-size:clamp(28px,4.4vw,42px);line-height:1.14;margin-bottom:16px}
.article h2{font-size:25px;margin:34px 0 12px}
.article h3{font-size:20px;margin:26px 0 10px}
.article p{font-size:17px;color:var(--slate);margin-bottom:18px}
.article ul,.article ol{margin:0 0 18px 22px}
.article li{font-size:17px;margin-bottom:9px}
.article img{border-radius:12px;margin:24px 0;box-shadow:var(--shadow-md)}
.article .lead-img{height:340px;object-fit:cover;width:100%}
.callout{background:var(--teal-tint);border-left:4px solid var(--teal);border-radius:0 12px 12px 0;padding:18px 22px;margin:24px 0}
.callout p{margin:0;font-size:16px;color:var(--ink)}

/* =========== FORMS =========== */
.form-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:30px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;font-family:'Inter';font-size:15px;color:var(--slate);background:var(--sand);border:1px solid var(--line);border-radius:10px;padding:12px 14px;transition:.15s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--teal);background:#fff;box-shadow:0 0 0 3px var(--teal-tint)}
.field textarea{min-height:110px;resize:vertical}

/* =========== CONTACT =========== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.info-row{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line)}
.info-row:last-child{border-bottom:none}
.info-row .ir-ico{width:42px;height:42px;border-radius:10px;background:var(--teal-tint);color:var(--teal);display:flex;align-items:center;justify-content:center;flex:none}
.info-row .ir-ico svg{width:20px;height:20px}
.info-row b{font-family:'Sora';font-size:15px;color:var(--ink);display:block;margin-bottom:2px}
.info-row span,.info-row a{font-size:14.5px;color:var(--mist)}
.map-embed{border:0;border-radius:var(--radius);width:100%;height:300px;box-shadow:var(--shadow)}

/* =========== PAGE HERO (sub pages) =========== */
.page-hero{background:var(--ink);color:#fff;padding:56px 0 50px;position:relative}
.page-hero .kicker{color:var(--amber)}
.page-hero h1{color:#fff;font-size:clamp(30px,4.6vw,46px);margin-bottom:10px}
.page-hero p{color:#C3D0DD;font-size:17px;max-width:600px}
.breadcrumb{font-size:13px;color:#9FB2C4;margin-bottom:14px}
.breadcrumb a{color:#9FB2C4}.breadcrumb a:hover{color:var(--teal-bright)}

/* =========== CTA BANNER =========== */
.cta-banner{background:var(--teal);color:#fff;border-radius:18px;padding:44px;text-align:center}
.cta-banner h2{color:#fff;font-size:clamp(24px,3.2vw,32px);margin-bottom:10px}
.cta-banner p{color:#D6EAF2;font-size:16.5px;margin-bottom:24px;max-width:540px;margin-left:auto;margin-right:auto}

/* =========== FOOTER =========== */
.site-footer{background:var(--ink);color:#9FB2C4;padding:54px 0 0}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;padding-bottom:38px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:16px;font-family:'Sora'}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:9px}
.site-footer a{color:#9FB2C4;font-size:14px}
.site-footer a:hover{color:var(--teal-bright)}
.footer-brand img{height:42px;margin-bottom:14px}
.footer-brand p{font-size:14px;max-width:280px;color:#8295A8}
.footer-social{display:flex;gap:10px;margin-top:16px}
.footer-social a{width:36px;height:36px;border-radius:9px;background:#1B2A40;display:flex;align-items:center;justify-content:center}
.footer-social svg{width:18px;height:18px;color:#9FB2C4}
.footer-bottom{border-top:1px solid #1B2A40;padding:18px 0;font-size:13px;text-align:center;color:#7D90A6}
.footer-bottom b{color:var(--teal-bright)}

/* =========== FLOATING ACTIONS =========== */
.float-actions{position:fixed;right:18px;bottom:18px;z-index:950;display:flex;flex-direction:column;gap:12px}
.float-actions a{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(0,0,0,.22);transition:.2s}
.float-actions a:hover{transform:scale(1.07)}
.fa-wa{background:#25D366}
.fa-call{background:var(--teal)}
.float-actions svg{width:26px;height:26px;color:#fff}

/* =========== UTIL =========== */
.center{text-align:center}
.mt-0{margin-top:0}.mb-0{margin-bottom:0}
.mt-32{margin-top:32px}
.lead-text{font-size:18px;color:var(--slate);max-width:720px}
.muted{color:var(--mist)}
.pill-row{display:flex;gap:10px;flex-wrap:wrap}

/* =========== FAQ (accordion via <details>) =========== */
.faq{max-width:820px;margin:0 auto}
.faq details{background:var(--paper);border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.faq details[open]{border-color:var(--teal)}
.faq summary{list-style:none;cursor:pointer;padding:18px 22px;font-family:'Sora';font-weight:600;font-size:16.5px;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:'Sora';font-weight:600;font-size:22px;color:var(--teal);flex:none;transition:transform .2s}
.faq details[open] summary::after{content:"\2212"}
.faq .faq-a{padding:0 22px 18px;font-size:15.5px;color:var(--slate)}
.faq .faq-a a{color:var(--teal);font-weight:600}

/* =========== COURSE SEARCH BAR =========== */
.course-search{max-width:560px;margin:0 auto 14px;position:relative}
.course-search svg{position:absolute;left:16px;top:50%;transform:translateY(-50%);width:20px;height:20px;color:var(--mist);pointer-events:none}
.course-search input{width:100%;font-family:'Inter';font-size:16px;color:var(--slate);background:var(--paper);border:1px solid var(--line);border-radius:999px;padding:14px 20px 14px 46px;box-shadow:var(--shadow);transition:.15s}
.course-search input:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px var(--teal-tint)}
.course-noresult{display:none;text-align:center;color:var(--mist);font-size:16px;padding:24px 0}
.cat-band.is-hidden,.card.is-hidden{display:none}

/* =========== RESPONSIVE =========== */
@media(max-width:980px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-top{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr;gap:28px}
  .split img{max-height:340px}
}
@media(max-width:860px){
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:12px 18px 18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-md);gap:2px}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 10px;border-radius:8px}
  .nav-links .nav-cta{text-align:center;margin-top:8px}
  .nav-toggle{display:block}
  .site-header{position:sticky}
  .topbar .tb-left span:nth-child(2){display:none}
}
@media(max-width:720px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .gallery-grid{grid-template-columns:repeat(2,1fr)}
  .statstrip{grid-template-columns:repeat(2,1fr);gap:30px 16px}
  .contact-grid{grid-template-columns:1fr;gap:30px}
  section{padding:48px 0}
  .hero-inner{padding:56px 24px 64px}
  .hero-stats{gap:24px}
  .cta-banner{padding:32px 22px}
}
@media(max-width:440px){
  .gallery-grid{grid-template-columns:1fr}
  .brand .btxt small{display:none}
}