/* ============================================================
   Banani Foundation — shared styles
   Brand: forest #16382B, gold #C98A2E (from the logo mark)
   ============================================================ */
:root{
  --forest:#16382B;        /* brand primary (logo stroke) */
  --forest-deep:#0f2820;   /* darkest — footer / dark band */
  --forest-mid:#2f6b4f;
  --leaf:#5aa079;          /* living accent */
  --gold:#c98a2e;          /* brand accent (logo centre) */
  --gold-soft:#e0b878;
  --paper:#f4f7f1;         /* cool sage-white bg */
  --paper-2:#e7eee2;       /* soft sage block */
  --line:#c9d6c6;          /* hairline */
  --ink:#182a22;
  --muted:#586b60;
  --maxw:1160px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--paper);color:var(--ink);
  font-family:"Instrument Sans",system-ui,sans-serif;
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:"Fraunces",Georgia,serif;font-weight:500;line-height:1.1;color:var(--forest);letter-spacing:-0.01em}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.eyebrow{font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;font-weight:600;color:var(--forest-mid)}

/* ---------- NAV ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(244,247,241,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand-logo{height:50px;width:auto}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{font-size:14.5px;color:var(--muted);font-weight:500;transition:color .2s;position:relative}
.nav-links a:hover{color:var(--forest)}
.nav-links a.active{color:var(--forest)}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--gold);border-radius:2px}
.nav-cta{border:1px solid var(--forest);border-radius:100px;padding:8px 18px;color:var(--forest);font-weight:600;font-size:14px;transition:background .2s,color .2s}
.nav-cta:hover{background:var(--forest);color:var(--paper)}
.nav-cta.active::after{display:none}
.menu-btn{display:none;background:none;border:0;cursor:pointer;color:var(--forest)}

/* ---------- BUTTONS ---------- */
.btn{display:inline-block;border-radius:100px;padding:13px 26px;font-weight:600;font-size:15px;cursor:pointer;transition:transform .15s ease,background .2s,box-shadow .2s;border:0;font-family:inherit}
.btn-solid{background:var(--forest);color:var(--paper);box-shadow:0 8px 22px -12px rgba(22,56,43,.7)}
.btn-solid:hover{background:var(--forest-deep);transform:translateY(-1px)}
.btn-ghost{color:var(--forest);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--forest-mid);transform:translateY(-1px)}

/* ---------- HERO (home) ---------- */
.hero{position:relative;overflow:hidden;padding:82px 0 70px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.hero h1{font-size:clamp(38px,6vw,66px);font-weight:500}
.hero h1 em{font-style:italic;color:var(--forest-mid)}
.hero .lede{margin-top:22px;font-size:19px;color:var(--muted);max-width:34ch}
.hero-actions{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap}
.script-mark{position:absolute;right:-2%;top:4%;font-family:"Fraunces",serif;font-size:min(30vw,340px);color:var(--forest);opacity:.05;pointer-events:none;line-height:1;user-select:none}

/* signature tree */
.tree-holder{display:flex;justify-content:center}
.tree{width:100%;max-width:340px;height:auto}
.tree path,.tree line,.tree circle{stroke:var(--forest);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:var(--len,600);stroke-dashoffset:var(--len,600);animation:draw 2.4s ease forwards}
.tree .leaf{stroke:var(--leaf)}
.tree .bird{stroke:var(--forest-deep);stroke-width:1.8}
.tree .ground{stroke:var(--gold);opacity:.75}
@keyframes draw{to{stroke-dashoffset:0}}

/* growth rings signature (hero) */
.rings{width:100%;max-width:360px;height:auto}
.rings .gring{stroke-dasharray:100;stroke-dashoffset:100;animation:growdraw 1.7s ease forwards;animation-delay:var(--gd,0s)}
.rings .gseed{opacity:0;animation:seedfade .5s ease forwards .05s}
@keyframes growdraw{to{stroke-dashoffset:0}}
@keyframes seedfade{to{opacity:1}}

/* logo mark as hero visual */
.mark-holder{display:flex;justify-content:center}
.hero-mark{width:100%;max-width:340px;height:auto;animation:markin 1.1s cubic-bezier(.2,.7,.2,1) both}
@keyframes markin{from{opacity:0;transform:scale(.9)}to{opacity:1;transform:none}}

/* reading our mark */
.mark-explain{display:grid;grid-template-columns:.82fr 1.18fr;gap:56px;align-items:center}
.mark-figure{width:100%;max-width:260px;margin:0 auto;display:block}

/* ---------- PAGE HEADER (interior pages) ---------- */
.page-head{position:relative;overflow:hidden;padding:70px 0 54px;border-bottom:1px solid var(--line)}
.page-head .script-mark{top:-8%}
.page-head h1{font-size:clamp(34px,5vw,54px);margin-top:14px;max-width:16ch}
.page-head p{margin-top:20px;color:var(--muted);font-size:19px;max-width:56ch}

/* ---------- MEANING BRIDGE ---------- */
.meaning{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper-2)}
.meaning .wrap{padding-top:46px;padding-bottom:46px;display:grid;grid-template-columns:auto 1fr;gap:34px;align-items:center}
.odia{font-family:"Fraunces",serif;font-size:60px;color:var(--forest);line-height:1;white-space:nowrap}
.meaning p{font-size:19px;color:var(--forest);max-width:64ch}
.meaning p b{font-style:italic;font-family:"Fraunces",serif;font-weight:500}

/* ---------- SECTIONS ---------- */
section{padding:84px 0}
.sec-head{max-width:62ch;margin-bottom:50px}
.sec-head h2{font-size:clamp(28px,4vw,42px);margin-top:14px}
.sec-head p{margin-top:18px;color:var(--muted);font-size:18px}
.band-sage{background:var(--paper-2)}

/* about grid */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px}
.about-lead{font-family:"Fraunces",serif;font-size:23px;line-height:1.45;color:var(--forest)}
.vm{margin-top:4px}
.vm-item{padding:18px 0;border-top:1px solid var(--line)}
.vm-item:first-child{border-top:0;padding-top:0}
.vm-item h4{font-family:"Instrument Sans",sans-serif;font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--forest-mid);font-weight:600;margin-bottom:6px}
.vm-item p{color:var(--muted);font-size:16.5px}

/* pillars */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.pillar{background:#fff;border:1px solid var(--line);border-radius:18px;padding:32px 28px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s}
.pillar:hover{transform:translateY(-4px);box-shadow:0 22px 40px -28px rgba(22,56,43,.5);border-color:var(--leaf)}
.pillar .ic{width:44px;height:44px;margin-bottom:20px}
.pillar .ic svg{width:44px;height:44px;stroke:var(--forest);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.pillar.earth .ic svg{stroke:var(--gold)}
.pillar h3{font-size:22px;margin-bottom:10px}
.pillar p{color:var(--muted);font-size:16px}
.pillar ul{list-style:none;margin-top:16px}
.pillar li{font-size:14.5px;color:var(--forest-mid);padding:6px 0;border-top:1px dashed var(--line);display:flex;gap:9px}
.pillar li:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--leaf);margin-top:8px;flex:none}
.pillar.earth li:before{background:var(--gold)}

/* approach */
.approach{background:var(--forest-deep);color:var(--paper)}
.approach h2{color:var(--paper)}
.approach .eyebrow{color:var(--gold-soft)}
.approach .sec-head p{color:#c4d4c8}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid rgba(255,255,255,.16)}
.step{padding:34px 30px 34px 0;border-right:1px solid rgba(255,255,255,.16)}
.step:last-child{border-right:0;padding-right:0}
.step .num{font-family:"Fraunces",serif;font-size:15px;color:var(--gold-soft);letter-spacing:.05em}
.step h3{color:var(--paper);font-size:24px;margin:14px 0 10px}
.step p{color:#bcccbf;font-size:15.5px}

/* involve cards */
.involve-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{border:1px solid var(--line);border-radius:18px;padding:32px;background:#fff}
.card .ic{width:40px;height:40px;margin-bottom:18px}
.card .ic svg{width:40px;height:40px;stroke:var(--forest);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:21px;margin-bottom:10px}
.card p{color:var(--muted);font-size:15.5px;margin-bottom:20px}
.card .link{color:var(--forest);font-weight:600;font-size:15px;display:inline-flex;gap:7px;align-items:center;transition:gap .2s}
.card .link:hover{gap:11px}

/* CTA band */
.cta-band{background:var(--forest);color:var(--paper);border-radius:24px;padding:52px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:var(--paper);font-size:clamp(26px,3.4vw,36px);max-width:18ch}
.cta-band p{color:#c9dccf;margin-top:10px;max-width:44ch}
.cta-band .btn-solid{background:var(--gold);color:var(--forest-deep)}
.cta-band .btn-solid:hover{background:var(--gold-soft)}

/* contact */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px}
.contact-info h3{font-size:15px;font-family:"Instrument Sans",sans-serif;letter-spacing:.13em;text-transform:uppercase;color:var(--forest-mid);font-weight:600;margin:22px 0 6px}
.contact-info h3:first-child{margin-top:0}
.contact-info p{color:var(--forest);font-size:17px}
.contact-info a{color:var(--forest);border-bottom:1px solid var(--line)}
.contact-info a:hover{border-color:var(--gold)}
.contact-info .ph{color:var(--muted)}
form{display:grid;gap:16px}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
label{display:block;font-size:13px;font-weight:600;color:var(--forest);margin-bottom:6px}
input,textarea{width:100%;font-family:inherit;font-size:15.5px;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px;transition:border-color .2s,box-shadow .2s}
input:focus,textarea:focus{outline:none;border-color:var(--leaf);box-shadow:0 0 0 3px rgba(90,160,121,.18)}
textarea{resize:vertical;min-height:130px}
.form-note{font-size:13px;color:var(--muted)}

/* ---------- FOOTER ---------- */
footer{background:var(--forest-deep);color:#cfe0d3;padding:56px 0 30px}
.foot-top{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.14)}
.foot-logo{height:44px;width:auto}
.foot-tag{margin-top:14px;font-size:14.5px;color:#9fb6a6;max-width:34ch}
.foot-cols{display:flex;gap:56px;flex-wrap:wrap}
.foot-cols h5{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--gold-soft);margin-bottom:12px;font-weight:600}
.foot-cols a{display:block;color:#bccdc0;font-size:14.5px;padding:4px 0}
.foot-cols a:hover{color:#fff}
.foot-legal{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-top:22px;font-size:13px;color:#8fa596}
.reg-line{max-width:64ch}

/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- RESPONSIVE ---------- */
@media(max-width:900px){
  .hero-grid,.about-grid,.contact-grid{grid-template-columns:1fr}
  .tree-holder{order:-1;margin-bottom:20px}
  .tree{max-width:230px}
  .rings{max-width:250px}
  .hero-mark{max-width:230px}
  .mark-explain{grid-template-columns:1fr;gap:28px}
  .mark-figure{max-width:200px}
  .pillars,.steps,.involve-grid{grid-template-columns:1fr}
  .step{border-right:0;border-bottom:1px solid rgba(255,255,255,.16);padding:26px 0}
  .step:last-child{border-bottom:0}
  .meaning .wrap{grid-template-columns:1fr;gap:16px}
  .odia{font-size:48px;white-space:normal}
  .nav-links{display:none}
  .nav-links.open{display:flex;flex-direction:column;align-items:flex-start;position:absolute;top:72px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:18px 28px;gap:16px}
  .nav-links.open a.active::after{display:none}
  .menu-btn{display:block}
  .f-row{grid-template-columns:1fr}
  .cta-band{padding:36px}
  section{padding:60px 0}
}
@media(prefers-reduced-motion:reduce){
  .tree path,.tree line,.tree circle{animation:none;stroke-dashoffset:0}
  .rings .gring{animation:none;stroke-dashoffset:0}
  .rings .gseed{animation:none;opacity:1}
  .hero-mark{animation:none}
  .reveal{transition:none;opacity:1;transform:none}
  html{scroll-behavior:auto}
}