:root{
  --primary:#184d2b;
  --primary2:#2e7d4f;
  --bg:#eef8f0; /* pale green */
  --text:#102015;
  --card:#ffffff;
  --shadow:0 12px 30px rgba(0,0,0,.08);
}

*{
  margin:0;
  padding:0;
  box-sizing:border-box;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial;
}

body{
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
}

a{ text-decoration:none; color:inherit; }

.container{
  max-width:1100px;
  margin:auto;
  padding:0 18px;
}

/* ===========================
   Header / Navbar
   =========================== */

header{
  position:sticky;
  top:0;
  z-index:9;
  background:rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom:1px solid rgba(0,0,0,.06);
}

.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:10px 0;
}

.brand{
  display:flex;
  align-items:center;
  gap:12px;
}

.brand img{
  width:86px;
  height:86px;
  object-fit:contain;
  filter: drop-shadow(0 6px 10px rgba(0,0,0,.08));
}


.brand h1{
  font-size:22px;
  font-weight:1000;
  color:var(--primary);
  letter-spacing: .2px;
}


.brand span{
  display:block;
  font-size:13px;
  font-weight:800;
  color:#2d5f3c;
}


.links{
  display:flex;
  gap:18px;
  align-items:center;
}

.links a{
  padding:8px 10px;
  border-radius:10px;
  font-weight:700;
  color:#1a2b1f;
}

.links a:hover{
  background:rgba(24,77,43,.08);
  color:var(--primary);
}

.menu-btn{ display:none; }

/* ===========================
   Hero
   =========================== */

.hero{
  padding:60px 0 30px;
  background: radial-gradient(circle at 10% 10%, rgba(24,77,43,.12), transparent 40%),
              radial-gradient(circle at 90% 20%, rgba(46,125,79,.15), transparent 45%);
}

.hero-wrap{
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:30px;
  align-items:center;
}

.badge{
  display:inline-flex;
  gap:8px;
  align-items:center;
  background:#fff;
  border:1px solid rgba(0,0,0,.08);
  padding:8px 12px;
  border-radius:999px;
  box-shadow:var(--shadow);
  font-weight:800;
  color:var(--primary);
}

.hero h2{
  font-size:42px;
  line-height:1.12;
  margin:14px 0;
  color:#0c1a10;
}

.hero p{
  font-size:16px;
  color:#233529;
  max-width:650px;
}

.cta{
  display:flex;
  gap:12px;
  margin-top:18px;
  flex-wrap:wrap;
}

.btn{
  padding:12px 16px;
  border-radius:14px;
  font-weight:900;
  border:1px solid rgba(0,0,0,.1);
  display:inline-flex;
  gap:10px;
  align-items:center;
  cursor:pointer;
}

.btn.primary{
  background:var(--primary);
  color:#fff;
  border-color:transparent;
}

.btn.primary:hover{ background:#123b21; }

.btn.secondary{ background:#fff; }

.btn.secondary:hover{
  background:rgba(24,77,43,.08);
}

/* ===========================
   Sections / Cards
   =========================== */

.section{ padding:40px 0; }

.section h3{
  font-size:26px;
  color:#0c1a10;
}

.section p.sub{
  color:#2a3c30;
  margin-top:6px;
}

.grid3{
  margin-top:18px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
}

.grid2{
  margin-top:18px;
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px;
}

.card{
  background:var(--card);
  border-radius:22px;
  padding:18px;
  border:1px solid rgba(0,0,0,.08);
  box-shadow:var(--shadow);
}

.card h4{
  color:var(--primary);
  font-size:18px;
}

.card p{
  margin-top:8px;
  color:#2a3c30;
}

/* ===========================
   Footer
   =========================== */

.footer{
  background:#fff;
  border-top:1px solid rgba(0,0,0,.07);
  padding:24px 0;
  margin-top:30px;
}

.footer .row{
  display:flex;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
}

.small{
  font-size:13px;
  color:#355043;
}

/* ===========================
   Forms
   =========================== */

.form{
  display:grid;
  gap:12px;
  margin-top:16px;
}

input,textarea{
  width:100%;
  padding:12px 12px;
  border-radius:14px;
  border:1px solid rgba(0,0,0,.15);
  outline:none;
  background:#fff;
}

textarea{ min-height:120px; resize:vertical; }

/* ===========================
   Reveal animations
   =========================== */

.reveal{
  opacity:0;
  transform: translateY(18px);
  transition: opacity .7s ease, transform .7s ease;
}

.reveal.show{
  opacity:1;
  transform: translateY(0);
}

.reveal.delay-1{transition-delay:.08s;}
.reveal.delay-2{transition-delay:.16s;}
.reveal.delay-3{transition-delay:.24s;}
.reveal.delay-4{transition-delay:.32s;}
.reveal.delay-5{transition-delay:.40s;}
.reveal.delay-6{transition-delay:.48s;}

/* ===========================
   Flip Cards (Products)
   =========================== */

.flip-grid{
  margin-top:18px;
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:16px;
}

.flip-card{ perspective: 1000px; }

.flip-inner{
  position:relative;
  width:100%;
  min-height:240px;
  transform-style:preserve-3d;
  transition: transform .7s ease;
  border-radius:22px;
}

.flip-face{
  position:absolute;
  inset:0;
  backface-visibility:hidden;
  border-radius:22px;
  padding:18px;
  border:1px solid rgba(0,0,0,.08);
  background: var(--card);
  box-shadow: var(--shadow);
}

.flip-front h4,
.flip-back h4{
  color: var(--primary);
  font-size: 18px;
}

.flip-face p{
  margin-top:12px;
  color:#2a3c30;
  line-height:1.75;
}

/* Make headings consistent spacing */
.flip-face h4{
  margin-bottom: 4px;
}

/* Fix “first card looks taller / uneven” issue */
.flip-inner{
  min-height: 260px; /* was 240px */
}


.flip-back{
  transform: rotateY(180deg);
  background: rgba(24,77,43,.06);
  border: 1px solid rgba(24,77,43,.15);
}

.flip-card:hover .flip-inner{
  transform: rotateY(180deg);
}

/* Keep cards consistent height by allowing scroll if content is long */
.flip-face{
  overflow: auto;
}
.flip-face::-webkit-scrollbar{
  width: 8px;
}
.flip-face::-webkit-scrollbar-thumb{
  background: rgba(24,77,43,.25);
  border-radius: 999px;
}


/* ===========================
   About Tabs (English/Tamil)
   =========================== */

.tabs{
  display:flex;
  gap:10px;
  margin-top:14px;
  flex-wrap:wrap;
}

.tab-btn{
  padding:10px 14px;
  border-radius:999px;
  border:1px solid rgba(0,0,0,.14);
  background:#fff;
  font-weight:900;
}

.tab-btn.active{
  border-color: transparent;
  background: rgba(24,77,43,.12);
  color: var(--primary);
}

.tab-panel{
  display:none;
  margin-top:16px;
  animation: fadeUp .35s ease;
}

.tab-panel.active{ display:block; }

@keyframes fadeUp{
  from{ opacity:0; transform: translateY(8px); }
  to{ opacity:1; transform: translateY(0); }
}

/* ===========================
   Responsive
   =========================== */

@media(max-width:880px){
  .hero-wrap{ grid-template-columns:1fr; }
  .grid3{ grid-template-columns:1fr; }
  .grid2{ grid-template-columns:1fr; }

  .links{ display:none; }

  .menu-btn{
    display:inline-flex;
    border:1px solid rgba(0,0,0,.15);
    padding:10px 12px;
    border-radius:12px;
    background:#fff;
    font-weight:800;
  }

  .links.open{
    display:flex;
    flex-direction:column;
    gap:8px;
    position:absolute;
    top:78px;
    right:18px;
    background:#fff;
    border:1px solid rgba(0,0,0,.1);
    padding:12px;
    border-radius:16px;
    box-shadow:var(--shadow);
  }

  .hero h2{ font-size:34px; }

  /* Flip cards -> stacked (mobile friendly) */
  .flip-grid{ grid-template-columns: 1fr; }

  .flip-inner{
    min-height: unset;
    transform: none !important;
  }

  .flip-face{
    position: relative;
    transform: none !important;
    margin-bottom: 12px;
  }
}