/* ===========================================================
   Thangavel Charitable Trust & Kalaimagal Matric. Hr. Sec. School
   Design system: forest green + warm gold, Plus Jakarta Sans / Inter
   =========================================================== */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@500;600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root{
  --green:#2E7D32;      /* primary */
  --green-dark:#1B5E20;
  --green-700:#256428;
  --leaf:#5A8F3C;       /* secondary */
  --leaf-soft:#E8F1E4;
  --gold:#C9A227;       /* accent */
  --gold-soft:#F6EED2;
  --cream:#FAFAF7;
  --cream-band:#F3F1E9;
  --ink:#1F2A24;        /* text */
  --muted:#5c6b62;
  --line:#e4e6e0;
  --white:#ffffff;
  --shadow:0 10px 30px rgba(27,58,32,.10);
  --shadow-sm:0 4px 14px rgba(27,58,32,.08);
  --radius:14px;
  --radius-lg:22px;
  --wrap:1200px;
  --head:'Plus Jakarta Sans',system-ui,sans-serif;
  --body:'Inter',system-ui,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--body);color:var(--ink);
  background:var(--cream);line-height:1.65;font-size:17px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--head);line-height:1.15;margin:0 0 .5em;color:var(--ink);font-weight:700}
h1{font-size:clamp(2.1rem,4.6vw,3.4rem);letter-spacing:-.02em;font-weight:800}
h2{font-size:clamp(1.7rem,3.2vw,2.4rem);letter-spacing:-.015em}
h3{font-size:1.28rem}
p{margin:0 0 1rem}
a{color:var(--green);text-decoration:none;transition:.2s}
a:hover{color:var(--green-dark)}
img{max-width:100%;display:block}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section--tight{padding:52px 0}
.bg-cream{background:var(--cream-band)}
.bg-leaf{background:var(--leaf-soft)}
.center{text-align:center}
.muted{color:var(--muted)}

/* eyebrow + heading */
.eyebrow{font-family:var(--head);font-weight:700;text-transform:uppercase;
  letter-spacing:.12em;font-size:.78rem;color:var(--green);margin-bottom:.6rem;display:inline-block}
.eyebrow--gold{color:var(--gold)}
.lead{font-size:1.15rem;color:var(--muted);max-width:640px}
.center .lead{margin-inline:auto}
.head-accent{position:relative;padding-bottom:.4rem;display:inline-block}
.head-accent::after{content:"";position:absolute;left:0;bottom:0;width:56px;height:4px;
  border-radius:4px;background:var(--gold)}
.center .head-accent::after{left:50%;transform:translateX(-50%)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--head);font-weight:600;
  font-size:.98rem;padding:.82rem 1.5rem;border-radius:999px;cursor:pointer;border:2px solid transparent;
  transition:.2s;white-space:nowrap}
.btn--primary{background:var(--green);color:#fff}
.btn--primary:hover{background:var(--green-dark);color:#fff;transform:translateY(-2px)}
.btn--gold{background:var(--gold);color:#3a2e05}
.btn--gold:hover{background:#b7911f;color:#3a2e05;transform:translateY(-2px)}
.btn--outline{background:transparent;color:var(--green);border-color:var(--green)}
.btn--outline:hover{background:var(--green);color:#fff}
.btn--ghost-light{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.6)}
.btn--ghost-light:hover{background:#fff;color:var(--green-dark)}
.btn--white{background:#fff;color:var(--green-dark)}
.btn--white:hover{background:var(--gold-soft)}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:1.2rem;height:76px}
.brand{display:flex;align-items:center;gap:.7rem}
.brand__logo{width:44px;height:44px;object-fit:contain;flex:none}
.brand__text{display:flex;flex-direction:column;line-height:1.12}
.brand__text b{font-family:var(--head);font-weight:800;font-size:1.02rem;color:var(--green-dark)}
.brand__text span{font-size:.74rem;color:var(--muted);letter-spacing:.01em}
.nav__links{display:flex;align-items:center;gap:.3rem;list-style:none;margin:0;padding:0}
.nav__links a{font-family:var(--head);font-weight:600;font-size:.95rem;color:var(--ink);
  padding:.5rem .8rem;border-radius:8px}
.nav__links a:hover{background:var(--leaf-soft);color:var(--green-dark)}
.nav__links a.active{color:var(--green);background:var(--leaf-soft)}
.nav__cta{display:flex;align-items:center;gap:.6rem}
.nav__toggle{display:none;background:none;border:0;cursor:pointer;padding:6px}
.nav__toggle span{display:block;width:26px;height:3px;background:var(--green-dark);margin:5px 0;border-radius:3px;transition:.25s}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:78vh;display:flex;align-items:center;color:#fff;
  background-color:#1B5E20;background-size:cover;background-position:center;background-repeat:no-repeat}
.hero__inner{max-width:760px;padding:90px 0}
.hero .eyebrow{color:#ffe89a}
.hero h1{color:#fff;text-shadow:0 2px 20px rgba(0,0,0,.25)}
.hero p{font-size:1.2rem;color:#eef3ec;max-width:620px}
.hero__btns{display:flex;flex-wrap:wrap;gap:.9rem;margin-top:1.6rem}
.hero__badge{position:absolute;right:24px;bottom:24px;background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:.5rem 1rem;font-size:.82rem;
  font-family:var(--head);font-weight:600;backdrop-filter:blur(6px)}

/* ---------- Stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1.1rem}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem 1.2rem;
  text-align:center;box-shadow:var(--shadow-sm)}
.stat b{display:block;font-family:var(--head);font-weight:800;font-size:2.1rem;color:var(--green);
  line-height:1}
.stat span{display:block;margin-top:.45rem;font-size:.92rem;color:var(--muted);font-weight:500}
.stat--gold b{color:var(--gold)}
.stats--2up{grid-template-columns:repeat(2,1fr)}

/* ---------- Grids / cards ---------- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:center}
.grid-2--cards{align-items:stretch}
.wing{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow);display:flex;flex-direction:column}
.wing img{aspect-ratio:16/10;object-fit:cover;width:100%}
.wing__body{padding:1.7rem 1.7rem 2rem}
.wing__tag{font-family:var(--head);font-weight:700;font-size:.75rem;text-transform:uppercase;
  letter-spacing:.1em;color:var(--gold);margin-bottom:.4rem}
.wing__body h3{font-size:1.5rem;margin-bottom:.5rem}
.wing ul{margin:.4rem 0 1.2rem;padding-left:1.1rem;color:var(--muted)}
.wing ul li{margin-bottom:.35rem}
.arrow-link{font-family:var(--head);font-weight:700;color:var(--green);display:inline-flex;gap:.4rem;margin-top:auto}
.arrow-link:hover{gap:.7rem}

.features{display:grid;grid-template-columns:repeat(4,1fr);gap:1.3rem}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.7rem 1.4rem;
  box-shadow:var(--shadow-sm)}
.feature__ic{width:52px;height:52px;border-radius:14px;background:var(--leaf-soft);display:grid;
  place-items:center;margin-bottom:1rem;font-size:1.5rem}
.feature h3{font-size:1.12rem;margin-bottom:.35rem}
.feature p{font-size:.95rem;color:var(--muted);margin:0}

/* vision / upcoming projects */
.trio{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem;max-width:840px;margin:0 auto 2.6rem}
.vision-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;align-items:stretch}
.vision-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:1.7rem 1.6rem;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;height:100%}
.vision-card .feature__ic{margin-bottom:.9rem}
.vision-card h3{font-size:1.18rem;margin:0 0 .8rem}
.vision-card ul{list-style:none;padding:0;margin:0 0 1.1rem;display:grid;gap:.55rem}
.vision-card ul li{position:relative;padding-left:1.35rem;color:var(--muted);font-size:.96rem;line-height:1.45}
.vision-card ul li::before{content:"→";position:absolute;left:0;top:0;color:var(--green);font-weight:700}
.vision-cost{margin-top:auto;padding-top:.85rem;border-top:1px dashed var(--line);
  font-family:var(--head);font-weight:700;color:var(--green);font-size:1.02rem}
.vision-cost span{color:var(--muted);font-weight:500;font-size:.78rem;margin-left:.2rem}
.vision-card--total{background:linear-gradient(135deg,var(--green-dark),var(--green));
  color:#fff;border-color:transparent;justify-content:center}
.vision-card--total .feature__ic{background:rgba(255,255,255,.16)}
.vision-card--total h3{color:#fff}
.vision-card--total p{color:#d9ead3;margin:.2rem 0 0;font-size:.95rem}
.vision-total{font-family:var(--head);font-weight:800;font-size:2.5rem;line-height:1;color:#fff;margin:.1rem 0 .3rem}
.vision-total span{font-size:1rem;font-weight:600;color:#cfe0c7;margin-left:.35rem}

/* generic media+text row */
.media-row{display:grid;grid-template-columns:1fr 1fr;gap:2.4rem;align-items:center}
.media-row img{border-radius:var(--radius-lg);box-shadow:var(--shadow);width:100%;aspect-ratio:4/3;object-fit:cover}
.media-row--rev .media-row__text{order:2}

/* value/objective list */
.ticklist{list-style:none;padding:0;margin:1rem 0 0;display:grid;gap:.7rem}
.ticklist li{display:flex;gap:.7rem;align-items:flex-start}
.ticklist li::before{content:"✓";flex:none;width:24px;height:24px;border-radius:50%;
  background:var(--green);color:#fff;display:grid;place-items:center;font-size:.8rem;font-weight:700;margin-top:2px}

/* trustees */
.people{display:grid;grid-template-columns:repeat(3,1fr);gap:1.6rem}
.person{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  text-align:center;box-shadow:var(--shadow-sm);margin:0}
.person img{aspect-ratio:1/1;object-fit:cover;width:100%}
.person__img{aspect-ratio:1/1;width:100%;background-size:cover;background-position:center top;background-color:var(--leaf-soft)}
.person__b{padding:1.1rem}
.person__b b{font-family:var(--head);display:block;font-size:1.08rem}
.person__b span{color:var(--gold);font-weight:600;font-size:.9rem}

/* CTA band */
.cta{background:linear-gradient(135deg,var(--green-dark),var(--green));color:#fff;text-align:center;
  border-radius:var(--radius-lg);padding:3.4rem 2rem;box-shadow:var(--shadow)}
.cta h2{color:#fff}
.cta p{color:#dcebd7;max-width:560px;margin-inline:auto}
.cta__btns{display:flex;gap:.9rem;justify-content:center;flex-wrap:wrap;margin-top:1.5rem}

/* page hero (interior) */
.page-hero{position:relative;color:#fff;padding:96px 0 64px;
  background-color:#1B5E20;background-size:cover;background-position:center;background-repeat:no-repeat}
.page-hero h1{color:#fff}
.page-hero p{color:#e7efe4;max-width:620px;font-size:1.15rem;margin:0}
.crumb{font-family:var(--head);font-weight:600;font-size:.85rem;color:#cfe0c7;margin-bottom:.6rem}
.crumb a{color:#cfe0c7}
.crumb a:hover{color:#fff}

/* gallery */
.gallery{columns:3;column-gap:14px}
.gallery img{width:100%;margin-bottom:14px;border-radius:12px;box-shadow:var(--shadow-sm);
  cursor:pointer;transition:transform .25s,box-shadow .25s;break-inside:avoid}
.gallery img:hover{transform:scale(1.02);box-shadow:var(--shadow)}
.filters{display:flex;gap:.5rem;flex-wrap:wrap;justify-content:center;margin-bottom:2rem}
.filters button{font-family:var(--head);font-weight:600;font-size:.9rem;border:1.5px solid var(--line);
  background:#fff;color:var(--ink);padding:.5rem 1.1rem;border-radius:999px;cursor:pointer;transition:.2s}
.filters button:hover{border-color:var(--green)}
.filters button.active{background:var(--green);color:#fff;border-color:var(--green)}

/* lightbox */
.lb{position:fixed;inset:0;background:rgba(15,25,17,.92);display:none;align-items:center;justify-content:center;
  z-index:100;padding:24px}
.lb.open{display:flex}
.lb img{max-width:92vw;max-height:88vh;border-radius:10px;box-shadow:0 20px 60px rgba(0,0,0,.5)}
.lb__close{position:absolute;top:20px;right:26px;color:#fff;font-size:2.4rem;cursor:pointer;line-height:1;
  background:none;border:0}

/* contact */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:2.4rem}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.4rem 1.5rem;
  box-shadow:var(--shadow-sm);margin-bottom:1.1rem;display:flex;gap:1rem;align-items:flex-start}
.info-card .ic{width:46px;height:46px;flex:none;border-radius:12px;background:var(--leaf-soft);display:grid;
  place-items:center;font-size:1.3rem}
.info-card > div{min-width:0}
.info-card b{font-family:var(--head);display:block;margin-bottom:.15rem}
.info-card span,.info-card a{color:var(--muted);font-size:.96rem;overflow-wrap:anywhere}
.footer__contact li,.footer__contact a{overflow-wrap:anywhere}
form label{font-family:var(--head);font-weight:600;font-size:.9rem;display:block;margin:.9rem 0 .35rem}
form input,form select,form textarea{width:100%;padding:.8rem 1rem;border:1.5px solid var(--line);
  border-radius:10px;font-family:var(--body);font-size:1rem;background:#fff;color:var(--ink)}
form input:focus,form select:focus,form textarea:focus{outline:none;border-color:var(--green);
  box-shadow:0 0 0 3px var(--leaf-soft)}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow)}
.map-embed{width:100%;height:320px;border:0;border-radius:var(--radius);margin-top:1.2rem}

/* ---------- Footer ---------- */
.footer{background:#14261a;color:#c9d6c9;padding:56px 0 26px;margin-top:0}
.footer a{color:#c9d6c9}
.footer a:hover{color:#fff}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1.3fr;gap:2.4rem}
.footer__brand{display:flex;gap:.75rem;align-items:center;margin-bottom:1rem}
.footer__brand img{width:46px;height:46px}
.footer__brand b{font-family:var(--head);color:#fff;font-size:1.05rem;line-height:1.2}
.footer h4{font-family:var(--head);color:#fff;font-size:1rem;margin-bottom:1rem;letter-spacing:.02em}
.footer ul{list-style:none;padding:0;margin:0;display:grid;gap:.55rem;font-size:.95rem}
.footer__contact li{display:flex;gap:.6rem;align-items:flex-start;font-size:.95rem}
.footer__bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:2.4rem;padding-top:1.4rem;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:.6rem;font-size:.85rem;color:#9fb2a1}
.reg-badge{color:#e3c766;font-weight:600}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:980px){
  .stats,.stats--2up{grid-template-columns:repeat(2,1fr)}
  .features{grid-template-columns:repeat(2,1fr)}
  .vision-grid{grid-template-columns:repeat(2,1fr)}
  .grid-2,.media-row,.contact-grid{grid-template-columns:1fr}
  .media-row--rev .media-row__text{order:0}
  .people{grid-template-columns:1fr 1fr}
  .footer__grid{grid-template-columns:1fr 1fr}
  .gallery{columns:2}

  /* --- mobile nav: brand + toggle on row 1, links + CTA stack below --- */
  .nav{flex-wrap:wrap;height:auto;min-height:64px;padding:.55rem 0;position:relative}
  .brand{flex:1 1 auto;min-width:0}
  .nav__toggle{display:block;order:2}
  .nav__links{display:none;order:3;flex-basis:100%;flex-direction:column;gap:.15rem;
    padding:.4rem 0 .2rem;margin-top:.4rem;border-top:1px solid var(--line)}
  .nav__cta{display:none;order:4;flex-basis:100%;padding:.2rem 0 .5rem}
  .nav.open .nav__links{display:flex}
  .nav.open .nav__cta{display:flex}
  .nav.open .nav__cta .btn{width:100%;justify-content:center}
  .nav__links a{padding:.8rem .6rem;border-radius:8px}
  .nav__toggle.on span:nth-child(1){transform:translateY(8px) rotate(45deg)}
  .nav__toggle.on span:nth-child(2){opacity:0}
  .nav__toggle.on span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
}
@media(max-width:560px){
  body{font-size:16px}
  .section{padding:46px 0}
  .section--tight{padding:40px 0}
  .wrap{padding:0 18px}
  .stats,.stats--2up{grid-template-columns:1fr 1fr;gap:.7rem}
  .trio{grid-template-columns:1fr;gap:.7rem}
  .stat{padding:1.2rem .8rem}
  .stat b{font-size:1.7rem}
  .features{grid-template-columns:1fr;gap:1rem}
  .vision-grid{grid-template-columns:1fr;gap:1rem}
  .people{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr;gap:1.6rem}
  .gallery{columns:1}
  .footer__bottom{flex-direction:column;text-align:center}

  .hero{min-height:66vh}
  .hero__inner{padding:64px 0}
  .hero p{font-size:1.05rem}
  .hero__btns{gap:.6rem}
  .hero__btns .btn{flex:1 1 auto;justify-content:center}
  .hero__badge{display:none}

  .page-hero{padding:72px 0 44px}
  .cta{padding:2.4rem 1.3rem}
  .cta__btns .btn{width:100%;justify-content:center}
  .wing__body{padding:1.4rem 1.3rem 1.6rem}
  .map-embed{height:260px}

  .brand__logo{width:38px;height:38px}
  .brand__text b{font-size:.92rem}
  .brand__text span{font-size:.66rem}
}
@media(max-width:360px){
  .stats,.stats--2up{grid-template-columns:1fr}
}