/* ==========================================================================
   Tree Planet — design system  (foundation-stage, Australian environmental org)
   Premium environmental aesthetic · earth tones + forest greens
   ========================================================================== */

/* ---- RESET ---- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--sans);font-size:16px;line-height:1.65;color:var(--ink);background:var(--cream);overflow-x:hidden}
img,svg,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font:inherit;cursor:pointer;border:none;background:none}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--leaf);outline-offset:2px;border-radius:4px}
::selection{background:var(--leaf);color:#0e2a1c}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---- TOKENS ---- */
:root{
  --forest:#123524; --forest-2:#1b5236; --green:#2f8f5b; --green-d:#246b46;
  --leaf:#6fb53f; --leaf-soft:#a7d56b; --moss:#3f7d4e;
  --bark:#6b4f37; --clay:#bf8a55; --sand:#efe9dc; --sand-2:#f6f2e9;
  --cream:#fcfbf7; --panel:#ffffff;
  --ink:#1b2620; --body:#39443d; --muted:#69756c; --line:#e4e3d7;
  --sans:'DM Sans',system-ui,-apple-system,sans-serif;
  --serif:'Fraunces',Georgia,'Times New Roman',serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --wrap:1180px; --wrap-wide:1360px; --nav-h:78px; --r:20px; --r-sm:12px;
  --shadow:0 24px 50px -28px rgba(18,53,36,.4);
}

/* ---- LAYOUT ---- */
.wrap{width:min(var(--wrap),100%);margin-inline:auto;padding-inline:clamp(1.1rem,4vw,2.5rem)}
.wrap-wide{width:min(var(--wrap-wide),100%);margin-inline:auto;padding-inline:clamp(1.1rem,4vw,2.5rem)}
section{padding:clamp(3.5rem,7vw,7rem) 0;position:relative}
.bg-sand{background:var(--sand-2)}
.bg-forest{background:var(--forest);color:#fff}
.center{text-align:center}
.narrow{max-width:46rem;margin-inline:auto}

/* ---- TYPE ---- */
h1,h2,h3,h4{font-family:var(--serif);font-weight:500;line-height:1.08;letter-spacing:-.012em;color:var(--forest)}
.bg-forest h1,.bg-forest h2,.bg-forest h3,.bg-forest h4{color:#fff}
.display{font-size:clamp(2.8rem,6.5vw,5.4rem);line-height:1.0}
.h1{font-size:clamp(2.4rem,5vw,4rem)}
.h2{font-size:clamp(2rem,4vw,3.2rem)}
.h3{font-size:clamp(1.35rem,2.4vw,1.8rem)}
.lead{font-size:clamp(1.08rem,1.7vw,1.3rem);line-height:1.7;color:var(--body);font-weight:300}
.bg-forest .lead{color:rgba(255,255,255,.82)}
p{color:var(--body)}
.bg-forest p{color:rgba(255,255,255,.8)}
.eyebrow{display:inline-flex;align-items:center;gap:.55rem;font-size:.74rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--green-d)}
.eyebrow svg{width:16px;height:16px}
.bg-forest .eyebrow{color:var(--leaf-soft)}
.kicker-line{display:inline-block;width:34px;height:2px;background:var(--leaf);vertical-align:middle;margin-right:.4rem;border-radius:2px}

/* ---- BUTTONS ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.55rem;min-height:50px;padding:.9rem 1.7rem;border-radius:100px;font-weight:600;font-size:.94rem;transition:transform .25s var(--ease),background .25s,box-shadow .25s,color .25s,border-color .25s}
.btn svg{width:18px;height:18px;flex:none}
.btn-primary{background:var(--green);color:#fff;box-shadow:0 12px 26px -12px rgba(47,143,91,.8)}
.btn-primary:hover{background:var(--green-d);transform:translateY(-2px);box-shadow:0 18px 34px -14px rgba(47,143,91,.85)}
.btn-leaf{background:var(--leaf);color:#11300a;box-shadow:0 12px 26px -12px rgba(111,181,63,.75)}
.btn-leaf:hover{transform:translateY(-2px);filter:brightness(1.05)}
.btn-ghost{background:transparent;color:var(--forest);box-shadow:inset 0 0 0 1.6px var(--line)}
.btn-ghost:hover{box-shadow:inset 0 0 0 1.6px var(--green);color:var(--green-d)}
.btn-light{background:#fff;color:var(--forest)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 16px 30px -16px rgba(0,0,0,.4)}
.btn-outline-light{background:transparent;color:#fff;box-shadow:inset 0 0 0 1.6px rgba(255,255,255,.45)}
.btn-outline-light:hover{box-shadow:inset 0 0 0 1.6px #fff;background:rgba(255,255,255,.1)}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}
.btn-row{display:flex;flex-wrap:wrap;gap:.8rem}

/* ---- HEADER / NAV ---- */
.site-header{position:sticky;top:0;z-index:200;transition:background .4s,box-shadow .4s,backdrop-filter .4s}
.site-header.solid{background:rgba(252,251,247,.92);backdrop-filter:blur(14px);box-shadow:0 1px 0 var(--line)}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:1.2rem}
.brand{display:flex;align-items:center;gap:.6rem;font-family:var(--serif);font-weight:600;font-size:1.35rem;color:var(--forest);white-space:nowrap}
.brand .mark{display:grid;place-items:center;width:44px;height:44px;color:var(--green)}
.brand .mark svg{width:42px;height:42px}
.foot-brand .brand .mark{color:var(--leaf-soft)}
.header-light:not(.solid) .brand .mark{color:var(--leaf-soft)}
.header-light:not(.solid) .brand{color:#fff}
.header-light:not(.solid) .nav-links a{color:rgba(255,255,255,.85)}
.header-light:not(.solid) .nav-links a:hover,.header-light:not(.solid) .nav-links a.active{color:#fff}
.header-light:not(.solid) .burger span{background:#fff}
.nav-links{display:flex;align-items:center;gap:.1rem}
.nav-links a{position:relative;padding:.5rem .72rem;font-size:.88rem;font-weight:500;color:var(--ink);border-radius:100px;transition:color .2s,background .2s}
.nav-links a:hover{color:var(--green-d)}
.nav-links a.active{color:var(--green-d);font-weight:600}
.nav-links a.active::after{content:'';position:absolute;left:.72rem;right:.72rem;bottom:.15rem;height:2px;background:var(--leaf);border-radius:2px}
.nav-cta{display:flex;align-items:center;gap:.7rem}
.burger{display:none;width:46px;height:46px;border-radius:12px;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:rgba(0,0,0,.05)}
.burger span{width:21px;height:2px;background:var(--forest);border-radius:2px;transition:.3s var(--ease)}
.burger.x span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.x span:nth-child(2){opacity:0}
.burger.x span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---- HERO (home, cinematic) ---- */
.hero{position:relative;min-height:clamp(560px,92vh,860px);display:flex;align-items:center;color:#fff;overflow:hidden;margin-top:calc(var(--nav-h) * -1);padding-top:var(--nav-h)}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img,.hero-media video{width:100%;height:100%;object-fit:cover}
.hero-media::after{content:'';position:absolute;inset:0;background:linear-gradient(110deg,rgba(10,30,20,.86),rgba(10,30,20,.55) 45%,rgba(10,30,20,.25) 75%,rgba(10,30,20,.5))}
.hero-inner{position:relative;z-index:1;max-width:42rem;padding-block:clamp(3rem,8vw,6rem)}
.hero h1{color:#fff;margin:1.2rem 0 1.4rem}
.hero .lead{color:rgba(255,255,255,.88);max-width:38rem}
.hero .btn-row{margin-top:2.2rem}
.hero-trust{margin-top:2rem;display:flex;align-items:center;gap:.7rem;font-size:.9rem;color:rgba(255,255,255,.8)}
.hero-trust .badge{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,.15);color:#fff}
.hero-trust .badge svg{width:18px;height:18px}

/* foundation banner (honesty) */
.foundation-strip{background:var(--leaf);color:#11300a}
.foundation-strip .wrap{display:flex;align-items:center;justify-content:center;gap:.8rem;padding-block:.8rem;text-align:center;font-weight:600;font-size:.92rem;flex-wrap:wrap}
.foundation-strip svg{width:18px;height:18px;flex:none}

/* ---- PAGE HERO (inner pages) ---- */
.page-hero{position:relative;color:#fff;overflow:hidden;margin-top:calc(var(--nav-h) * -1);padding:calc(var(--nav-h) + clamp(3rem,7vw,5.5rem)) 0 clamp(2.5rem,6vw,4.5rem)}
.page-hero-media{position:absolute;inset:0;z-index:0}
.page-hero-media img{width:100%;height:100%;object-fit:cover}
.page-hero-media::after{content:'';position:absolute;inset:0;background:linear-gradient(120deg,rgba(10,30,20,.88),rgba(10,30,20,.6) 60%,rgba(10,30,20,.7))}
.page-hero .wrap{position:relative;z-index:1}
.page-hero h1{color:#fff;margin:1rem 0 .9rem;max-width:18ch}
.page-hero .lead{color:rgba(255,255,255,.85);max-width:46rem}
.crumbs{font-size:.8rem;color:rgba(255,255,255,.6);letter-spacing:.02em}
.crumbs a:hover{color:#fff}

/* ---- SECTION HEAD ---- */
.sec-head{max-width:44rem;margin-bottom:clamp(2rem,4vw,3.2rem)}
.sec-head.center{margin-inline:auto}
.sec-head .h2{margin:.85rem 0 .85rem}

/* ---- GRIDS ---- */
.grid{display:grid;gap:clamp(1rem,2.5vw,1.6rem)}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,4.5rem);align-items:center}
.split.wide-left{grid-template-columns:1.1fr .9fr}

/* ---- CARDS ---- */
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:clamp(1.5rem,2.6vw,2.1rem);transition:transform .3s var(--ease),box-shadow .3s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.card .ico{display:grid;place-items:center;width:56px;height:56px;border-radius:16px;background:var(--sand);color:var(--green-d);margin-bottom:1.1rem}
.card .ico svg{width:28px;height:28px}
.card h3{font-size:1.3rem;margin-bottom:.5rem}
.card p{font-size:.94rem;color:var(--muted)}
.card.dark{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.12)}
.card.dark .ico{background:rgba(255,255,255,.1);color:var(--leaf-soft)}
.card.dark h3{color:#fff}.card.dark p{color:rgba(255,255,255,.72)}

/* feature image card */
.feature{border-radius:var(--r);overflow:hidden;background:var(--panel);border:1px solid var(--line);transition:transform .3s var(--ease),box-shadow .3s}
.feature:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.feature-img{aspect-ratio:3/2;overflow:hidden}
.feature-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.feature:hover .feature-img img{transform:scale(1.05)}
.feature-body{padding:1.5rem}
.feature-body .tag{font-size:.72rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--green-d)}
.feature-body h3{font-size:1.25rem;margin:.4rem 0 .55rem}
.feature-body p{font-size:.92rem;color:var(--muted)}

/* media block */
.media{border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow);aspect-ratio:4/3;background:var(--sand)}
.media img{width:100%;height:100%;object-fit:cover}
.media.tall{aspect-ratio:3/4}

/* checklist points */
.points{display:flex;flex-direction:column;gap:1.1rem;margin-top:1.6rem}
.point{display:flex;gap:.9rem;align-items:flex-start}
.point .ico{flex:none;display:grid;place-items:center;width:40px;height:40px;border-radius:11px;background:var(--sand);color:var(--green-d)}
.bg-forest .point .ico{background:rgba(255,255,255,.1);color:var(--leaf-soft)}
.point .ico svg{width:20px;height:20px}
.point h4{font-size:1.05rem;margin-bottom:.15rem}
.point p{font-size:.92rem;color:var(--muted)}
.bg-forest .point p{color:rgba(255,255,255,.72)}

/* ---- STAT FIGURES (general facts) ---- */
.figures{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem}
.figure{text-align:center;padding:1.4rem 1rem;border-radius:var(--r);background:var(--panel);border:1px solid var(--line)}
.figure b{font-family:var(--serif);font-size:clamp(2rem,4vw,2.8rem);font-weight:600;color:var(--green-d);display:block;line-height:1}
.figure small{display:block;margin-top:.5rem;font-size:.86rem;color:var(--muted)}
.bg-forest .figure{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.12)}
.bg-forest .figure b{color:var(--leaf-soft)}.bg-forest .figure small{color:rgba(255,255,255,.72)}

/* ---- ROADMAP TIMELINE ---- */
.roadmap{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem;counter-reset:rm}
.rm-step{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:1.8rem 1.4rem}
.rm-step .yr{font-family:var(--serif);font-size:2rem;font-weight:600;color:var(--green-d);line-height:1}
.rm-step .dot{position:absolute;top:1.9rem;right:1.4rem;width:12px;height:12px;border-radius:50%;background:var(--leaf)}
.rm-step h4{font-size:1.05rem;margin:.7rem 0 .4rem}
.rm-step p{font-size:.9rem;color:var(--muted)}
.bg-forest .rm-step{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.12)}
.bg-forest .rm-step h4{color:#fff}.bg-forest .rm-step p{color:rgba(255,255,255,.72)}
.bg-forest .rm-step .yr{color:var(--leaf-soft)}

/* ---- TRANSPARENCY CALLOUT ---- */
.callout{border-radius:var(--r);padding:clamp(2rem,4vw,3.2rem);background:linear-gradient(135deg,var(--forest),var(--forest-2));color:#fff;position:relative;overflow:hidden}
.callout::before{content:'';position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;background:radial-gradient(circle,rgba(111,181,63,.3),transparent 70%)}
.callout-inner{position:relative;z-index:1;max-width:52rem}
.callout .h3{color:#fff;font-style:italic;font-size:clamp(1.4rem,2.6vw,2rem);line-height:1.4}

/* ---- DONATE TIERS ---- */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
.tier{position:relative;background:var(--panel);border:2px solid var(--line);border-radius:var(--r);padding:2rem 1.6rem;text-align:center;transition:transform .25s var(--ease),border-color .25s}
.tier:hover{transform:translateY(-5px)}
.tier.feat{border-color:var(--green)}
.tier .pill{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--green);color:#fff;font-size:.66rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;padding:.32rem .85rem;border-radius:100px}
.tier .amt{font-family:var(--serif);font-size:2.6rem;color:var(--forest);line-height:1}
.tier .amt span{font-size:1rem;color:var(--muted)}
.tier p{font-size:.9rem;color:var(--muted);margin:.7rem 0 1.3rem}
.tier .btn{width:100%}

/* ---- PARTNER / LOGO PLACEHOLDERS ---- */
.logos{display:grid;grid-template-columns:repeat(5,1fr);gap:1rem}
.logo-slot{height:80px;border:1px dashed var(--line);border-radius:var(--r-sm);display:grid;place-items:center;color:var(--muted);font-size:.78rem;background:var(--panel)}

/* ---- FORMS ---- */
.form{display:grid;gap:1.1rem}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:1.1rem}
.field{display:flex;flex-direction:column;gap:.4rem}
.field label{font-size:.8rem;font-weight:600;color:var(--ink)}
.field label .req{color:var(--green-d)}
.field input,.field select,.field textarea{min-height:50px;padding:.85rem 1.05rem;border:1.5px solid var(--line);border-radius:12px;background:#fff;transition:border-color .2s,box-shadow .2s}
.field textarea{min-height:130px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(47,143,91,.12)}
.field .err{font-size:.78rem;color:#b3261e;font-weight:600;min-height:1em}
.form-note{font-size:.82rem;color:var(--muted)}
.form-msg{font-size:.9rem;font-weight:600;min-height:1.2em}
.form-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:clamp(1.6rem,3vw,2.6rem);box-shadow:var(--shadow)}
.choice-row{display:flex;flex-wrap:wrap;gap:.6rem}
.choice{flex:1;min-width:120px;text-align:center;padding:.8rem;border:1.5px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;font-weight:600;transition:.2s}
.choice:hover{border-color:var(--green)}
.choice input{position:absolute;opacity:0}
.choice:has(input:checked){border-color:var(--green);background:rgba(47,143,91,.08);color:var(--green-d)}

/* ---- FAQ ACCORDION ---- */
.faq{max-width:48rem;margin-inline:auto;display:flex;flex-direction:column;gap:.7rem}
.qa{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden}
.qa button{width:100%;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1.2rem 1.4rem;text-align:left;font-family:var(--serif);font-size:1.12rem;color:var(--forest)}
.qa button .ico{flex:none;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:var(--sand);color:var(--green-d);transition:transform .3s var(--ease)}
.qa button[aria-expanded=true] .ico{transform:rotate(45deg)}
.qa .ans{max-height:0;overflow:hidden;transition:max-height .35s var(--ease)}
.qa .ans p{padding:0 1.4rem 1.3rem;color:var(--muted);font-size:.95rem}

/* ---- NEWSLETTER BAND ---- */
.subscribe{display:flex;gap:.6rem;max-width:32rem;flex-wrap:wrap}
.subscribe input{flex:1;min-width:200px;min-height:50px;padding:.85rem 1.2rem;border-radius:100px;border:none;background:#fff;color:var(--ink)}
.subscribe.center{margin-inline:auto;justify-content:center}

/* ---- FINAL CTA ---- */
.cta-band{border-radius:var(--r);overflow:hidden;background:linear-gradient(135deg,var(--green),var(--forest));color:#fff;text-align:center;padding:clamp(2.8rem,6vw,5rem) 1.5rem;position:relative}
.cta-band h2{color:#fff;margin-bottom:.8rem}
.cta-band p{color:rgba(255,255,255,.85);max-width:38rem;margin:0 auto 1.9rem}

/* ---- FOOTER ---- */
.site-footer{background:var(--forest);color:rgba(255,255,255,.72);padding:clamp(3rem,5vw,4.5rem) 0 1.6rem;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.3fr;gap:2rem;padding-bottom:2.4rem;border-bottom:1px solid rgba(255,255,255,.12)}
.foot-brand .brand{color:#fff}
.foot-brand p{margin-top:1rem;font-size:.9rem;color:rgba(255,255,255,.6);max-width:24rem}
.foot-soc{display:flex;gap:.6rem;margin-top:1.3rem}
.foot-soc a{display:grid;place-items:center;width:40px;height:40px;border-radius:11px;background:rgba(255,255,255,.08);color:#fff;transition:background .25s}
.foot-soc a:hover{background:var(--green)}
.foot-soc svg{width:18px;height:18px}
.foot-col h4{color:#fff;font-family:var(--sans);font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;margin-bottom:1rem}
.foot-col a{display:block;padding:.32rem 0;font-size:.9rem;color:rgba(255,255,255,.68);transition:color .2s}
.foot-col a:hover{color:var(--leaf-soft)}
.foot-news p{font-size:.88rem;color:rgba(255,255,255,.6);margin:.4rem 0 .9rem}
.acknowledge{font-size:.82rem;color:rgba(255,255,255,.55);line-height:1.7;padding:1.6rem 0;border-bottom:1px solid rgba(255,255,255,.1)}
.foot-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.7rem;padding-top:1.5rem;font-size:.8rem;color:rgba(255,255,255,.5)}
.foot-bottom a:hover{color:#fff}

/* ---- REVEAL ANIMATION ---- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
[data-d="1"]{transition-delay:.08s}[data-d="2"]{transition-delay:.16s}[data-d="3"]{transition-delay:.24s}[data-d="4"]{transition-delay:.32s}

/* ---- RESPONSIVE ---- */
@media(max-width:980px){
  .g-4,.figures,.roadmap,.logos{grid-template-columns:repeat(2,1fr)}
  .g-3,.tiers{grid-template-columns:1fr}
  .split,.split.wide-left{grid-template-columns:1fr;gap:2.4rem}
  .media.tall{aspect-ratio:4/3}
  .foot-grid{grid-template-columns:1fr 1fr}
  .foot-brand,.foot-news{grid-column:1/-1}
}
@media(max-width:760px){
  .nav-links{display:none;position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;align-items:stretch;background:var(--panel);padding:1rem;gap:.1rem;box-shadow:0 24px 40px -22px rgba(18,53,36,.4);margin:0 1rem;border-radius:16px;border:1px solid var(--line)}
  .nav-links.open{display:flex}
  .nav-links a{padding:.85rem 1rem}
  .nav-links a.active::after{display:none}
  .burger{display:flex}
  .form .row,.g-2{grid-template-columns:1fr}
  .figures,.g-4{grid-template-columns:1fr 1fr}
  .roadmap,.logos{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}