/* ============================================================
   نهالستان طبیعت — طرح تک‌صفحه‌ای
   پالت از خود لوگو استخراج شده: تنهٔ سبز تیره، برگ مریم‌گلی، هالهٔ اُخرایی
   ============================================================ */
:root{
  --ink:#14251c;
  --bark:#2a4335;
  --bark-deep:#1b3126;
  --leaf:#708160;
  --leaf-soft:#8b9a7d;
  --halo:#b9862f;
  --halo-soft:#d9b877;
  --paper:#f3f5ef;
  --card:#ffffff;
  --mist:#e2e8db;
  --line:rgba(42,67,53,.14);

  --fa-display:"Noto Naskh Arabic", serif;
  --fa-body:"Vazirmatn", system-ui, sans-serif;
  --en-display:"Newsreader", Georgia, serif;

  --wrap:1180px;
  --pad:clamp(20px, 5vw, 48px);
  --gap:clamp(32px, 6vw, 72px);
  --sec:clamp(72px, 10vw, 128px);
  --r:14px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--fa-body);
  font-size:16.5px;
  line-height:1.95;
  font-weight:300;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
html[dir="ltr"] body{line-height:1.75;font-weight:400}
/* height:auto لازم است تا صفت‌های width/height در HTML نسبت تصویر را خراب نکنند */
img{max-width:100%;height:auto;display:block}
figure{margin:0}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--fa-display);font-weight:700;line-height:1.55;margin:0;letter-spacing:0}
html[dir="ltr"] h1,html[dir="ltr"] h2,html[dir="ltr"] h3,html[dir="ltr"] h4{font-family:var(--en-display);font-weight:600;line-height:1.2}
p{margin:0}
:focus-visible{outline:2.5px solid var(--halo);outline-offset:3px;border-radius:4px}

.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:var(--pad)}
.section{padding-block:var(--sec)}
.section--tint{background:linear-gradient(180deg,#eef2e9,#f3f5ef)}
.section--dark{background:var(--bark-deep);color:#e8eee4}

/* ---------- eyebrow: نشان هاله، امضای بصری صفحه ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--fa-body);font-size:.78rem;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;
  color:var(--halo);margin-bottom:18px;
}
.eyebrow svg{flex:none;width:26px;height:14px;overflow:visible}
.eyebrow path{fill:none;stroke:currentColor;stroke-width:1.4;stroke-linecap:round}
.section--dark .eyebrow{color:var(--halo-soft)}

.h2{font-size:clamp(1.75rem,3.6vw,2.7rem)}
.lede{max-width:62ch;color:#41544a;font-size:clamp(1rem,1.4vw,1.09rem);margin-top:18px}
.section--dark .lede{color:#c3d1bd}

/* ---------- header ---------- */
.head{
  position:fixed;inset-block-start:0;inset-inline:0;z-index:60;
  background:rgba(243,245,239,.78);
  backdrop-filter:saturate(150%) blur(14px);
  -webkit-backdrop-filter:saturate(150%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s, background .3s, box-shadow .3s;
}
.head.is-stuck{border-bottom-color:var(--line);box-shadow:0 10px 30px -24px rgba(20,37,28,.6)}
.head__in{display:flex;align-items:center;gap:22px;height:76px;max-width:var(--wrap);margin:0 auto;padding-inline:var(--pad)}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand img{width:40px;height:auto}
.brand b{font-family:var(--fa-display);font-size:1.02rem;font-weight:700;display:block;line-height:1.4}
.brand span{display:block;font-size:.7rem;color:var(--leaf);letter-spacing:.04em}

.nav{display:flex;gap:4px;margin-inline-start:auto;align-items:center}
.nav a{
  position:relative;padding:8px 11px;border-radius:8px;
  font-size:.875rem;font-weight:400;color:#3d5145;white-space:nowrap;
  transition:color .2s, background .2s;
}
.nav a::after{
  content:"";position:absolute;inset-inline:11px;bottom:3px;height:1.5px;
  background:var(--halo);transform:scaleX(0);transform-origin:inline-end;
  transition:transform .35s cubic-bezier(.2,.7,.3,1);
}
.nav a:hover{color:var(--bark)}
.nav a:hover::after,.nav a.is-active::after{transform:scaleX(1);transform-origin:inline-start}
.nav a.is-active{color:var(--bark);font-weight:500}

.tools{display:flex;align-items:center;gap:10px;flex:none}
.lang{
  border:1px solid var(--line);background:transparent;color:#3d5145;
  font-family:var(--fa-body);font-size:.78rem;font-weight:500;letter-spacing:.06em;
  padding:7px 13px;border-radius:999px;cursor:pointer;transition:.2s;
}
.lang:hover{border-color:var(--bark);color:var(--bark)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;
  font-family:var(--fa-body);font-size:.9rem;font-weight:500;cursor:pointer;
  transition:transform .25s cubic-bezier(.2,.7,.3,1), background .25s, color .25s, border-color .25s, box-shadow .25s;
}
.btn--solid{background:var(--bark);color:#f3f5ef;box-shadow:0 16px 30px -20px rgba(27,49,38,.9)}
.btn--solid:hover{background:var(--bark-deep);transform:translateY(-2px)}
.btn--ghost{border-color:rgba(243,245,239,.45);color:#f3f5ef}
.btn--ghost:hover{background:rgba(243,245,239,.12);transform:translateY(-2px)}
.btn--line{border-color:var(--line);color:var(--bark)}
.btn--line:hover{border-color:var(--bark);transform:translateY(-2px)}
.btn--sm{padding:9px 20px;font-size:.83rem}
.head .btn--sm{box-shadow:none}

.burger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:transparent;cursor:pointer;padding:0;place-items:center}
.burger span{display:block;width:17px;height:1.5px;background:var(--bark);margin:3.5px auto;transition:.3s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* ---------- hero ---------- */
.hero{position:relative;min-height:min(92vh,860px);display:grid;align-items:center;padding-block:150px 90px;overflow:clip}
.hero__bg{position:absolute;inset:0;z-index:0}
.hero__bg img{width:100%;height:100%;object-fit:cover}
.hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to left,rgba(15,29,22,.92) 8%,rgba(15,29,22,.78) 48%,rgba(15,29,22,.42) 100%);
}
html[dir="ltr"] .hero__bg::after{background:linear-gradient(to right,rgba(15,29,22,.92) 8%,rgba(15,29,22,.78) 48%,rgba(15,29,22,.42) 100%)}
.hero__in{position:relative;z-index:2;max-width:var(--wrap);margin:0 auto;padding-inline:var(--pad);width:100%;color:#f0f4ec}
.hero__copy{max-width:660px;position:relative}

/* هالهٔ لوگو، ترسیم‌شده پشت عنوان — امضای صفحه */
.halo{position:absolute;inset-block-start:-96px;inset-inline-start:-56px;width:min(430px,86vw);height:auto;z-index:-1;opacity:.85;pointer-events:none}
.halo path{fill:none;stroke:var(--halo-soft);stroke-width:1.6;stroke-linecap:round;
  stroke-dasharray:640;stroke-dashoffset:640;animation:draw 2.4s cubic-bezier(.22,.72,.3,1) .25s forwards}
@keyframes draw{to{stroke-dashoffset:0}}

.hero .eyebrow{color:var(--halo-soft)}
.hero h1{font-size:clamp(2.3rem,6.4vw,4.3rem);line-height:1.35;margin-bottom:6px}
html[dir="ltr"] .hero h1{line-height:1.08}
.hero__sub{font-family:var(--fa-display);font-size:clamp(1.05rem,2.3vw,1.5rem);color:var(--halo-soft);font-weight:400;margin-top:10px}
html[dir="ltr"] .hero__sub{font-family:var(--en-display)}
.hero p.hero__text{margin-top:22px;max-width:52ch;color:#cfdac8;font-size:clamp(1rem,1.5vw,1.1rem)}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}

.scroll-cue{position:absolute;bottom:26px;inset-inline-start:50%;transform:translateX(50%);z-index:3;width:1px;height:52px;background:linear-gradient(to bottom,transparent,var(--halo-soft));opacity:.7}
html[dir="ltr"] .scroll-cue{transform:translateX(-50%)}

/* ---------- stats ---------- */
.stats{background:var(--bark-deep);color:#dfe7d9;border-block:1px solid rgba(217,184,119,.16)}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);max-width:var(--wrap);margin:0 auto}
.stat{padding:38px var(--pad);text-align:center;border-inline-start:1px solid rgba(217,184,119,.14)}
.stat:first-child{border-inline-start:0}
.stat b{display:block;font-family:var(--fa-display);font-size:clamp(1.4rem,2.6vw,2rem);font-weight:700;color:#f0f4ec}
html[dir="ltr"] .stat b{font-family:var(--en-display)}
.stat span{display:block;font-size:.83rem;color:var(--halo-soft);letter-spacing:.05em;margin-top:4px}

/* ---------- about ---------- */
.about{display:grid;grid-template-columns:1.05fr .95fr;gap:var(--gap);align-items:center}
.facts{display:grid;gap:2px;margin-top:34px;background:var(--line);border-radius:var(--r);overflow:hidden}
.fact{background:var(--paper);padding:20px 24px}
.fact dt{font-size:.78rem;color:var(--halo);letter-spacing:.1em;margin-bottom:4px}
.fact dd{margin:0;font-family:var(--fa-display);font-size:1.06rem;font-weight:600;color:var(--bark)}
html[dir="ltr"] .fact dd{font-family:var(--en-display)}
.figure{position:relative;border-radius:var(--r);overflow:hidden;box-shadow:0 40px 70px -50px rgba(20,37,28,.85)}
.figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/4.4;transition:transform 1.2s cubic-bezier(.2,.7,.3,1)}
.figure:hover img{transform:scale(1.04)}
.figure::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 1px rgba(255,255,255,.28);border-radius:var(--r)}

/* ---------- expertise ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:52px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:38px 32px 34px;position:relative;overflow:hidden;
  transition:transform .4s cubic-bezier(.2,.7,.3,1), box-shadow .4s, border-color .4s;
}
.card::before{
  content:"";position:absolute;inset-block-start:0;inset-inline:0;height:2px;
  background:linear-gradient(to left,var(--halo),transparent);
  transform:scaleX(0);transform-origin:inline-end;transition:transform .5s cubic-bezier(.2,.7,.3,1);
}
.card:hover{transform:translateY(-6px);box-shadow:0 34px 60px -44px rgba(20,37,28,.7);border-color:rgba(42,67,53,.24)}
.card:hover::before{transform:scaleX(1);transform-origin:inline-start}
.card__mark{width:38px;height:38px;margin-bottom:20px;color:var(--leaf)}
.card__mark svg{width:100%;height:100%}
.card h3{font-size:1.2rem;margin-bottom:12px}
.card p{color:#4a5b51;font-size:.97rem}

/* ---------- approach ---------- */
.rows{margin-top:48px;border-block-start:1px solid var(--line)}
.row{
  display:grid;grid-template-columns:minmax(200px,.9fr) 2fr;gap:var(--gap);
  padding-block:34px;border-block-end:1px solid var(--line);align-items:baseline;
}
.row h3{font-size:1.22rem;color:var(--bark)}
.row p{color:#4a5b51}
.row:hover h3{color:var(--halo);transition:color .3s}

/* ---------- profile ---------- */
.profile{display:grid;grid-template-columns:repeat(2,1fr);gap:2px;margin-top:48px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.pcell{background:var(--card);padding:30px}
.pcell dt{font-size:.78rem;letter-spacing:.1em;color:var(--halo);margin-bottom:8px}
.pcell dd{margin:0;font-family:var(--fa-display);font-size:1.14rem;font-weight:600;color:var(--bark)}
html[dir="ltr"] .pcell dd{font-family:var(--en-display)}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.tag{
  font-family:var(--fa-body);font-size:.82rem;font-weight:400;color:var(--bark);
  background:#eef2e9;border:1px solid var(--line);border-radius:999px;padding:5px 14px;
}

/* ---------- facilities ----------
   موزاییک ۳ستونه: ردیف اول عریض+باریک، ردیف دوم باریک+عریض.
   هر چهار کاشی دقیقاً دو ردیف را پر می‌کنند و کاشی تنها باقی نمی‌ماند. */
.gallery{
  display:grid;grid-template-columns:repeat(3,1fr);
  grid-auto-rows:clamp(190px,23vw,300px);
  gap:16px;margin-top:52px;
}
.shot{position:relative;border-radius:var(--r);overflow:hidden;background:var(--bark-deep)}
.shot img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s cubic-bezier(.2,.7,.3,1),opacity .5s}
.shot:hover img{transform:scale(1.06);opacity:.82}
.shot figcaption{
  position:absolute;inset-block-end:0;inset-inline:0;padding:44px 20px 18px;
  font-size:.88rem;color:#f0f4ec;
  background:linear-gradient(to top,rgba(15,29,22,.9),transparent);
}
.shot--wide{grid-column:span 2}

/* ---------- international ---------- */
.intl{display:grid;grid-template-columns:1.15fr .85fr;gap:var(--gap);align-items:center}
.chips{display:grid;gap:12px}
.chip{
  display:flex;align-items:center;gap:14px;padding:18px 22px;
  border:1px solid rgba(217,184,119,.24);border-radius:var(--r);
  background:rgba(243,245,239,.05);font-size:.97rem;
  transition:border-color .3s, background .3s, transform .3s;
}
.chip:hover{border-color:rgba(217,184,119,.55);background:rgba(243,245,239,.09);transform:translateX(-4px)}
html[dir="ltr"] .chip:hover{transform:translateX(4px)}
.chip i{width:7px;height:7px;border-radius:50%;background:var(--halo-soft);flex:none}
.intl__cta{margin-top:34px}

/* ---------- contact ---------- */
.contact{display:grid;grid-template-columns:.9fr 1.1fr;gap:var(--gap)}
.clist{display:grid;gap:2px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.citem{display:flex;gap:18px;align-items:flex-start;background:var(--card);padding:26px 28px;transition:background .3s}
a.citem:hover{background:#eef2e9}
.citem .ico{width:36px;height:36px;flex:none;border-radius:10px;background:#eef2e9;display:grid;place-items:center;color:var(--bark)}
.citem .ico svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.ctext{display:block}
.citem .k{display:block;font-size:.78rem;color:var(--halo);letter-spacing:.08em;margin-bottom:3px}
.citem .v{display:block;font-size:1rem;color:var(--bark);font-weight:400;line-height:1.7;unicode-bidi:plaintext}

/* ---------- نقشه ---------- */
.map{grid-column:1/-1;margin-top:var(--gap)}
.map iframe{
  display:block;width:100%;height:clamp(300px,42vw,430px);border:0;
  border-radius:var(--r);background:var(--mist);
  box-shadow:0 40px 70px -55px rgba(20,37,28,.85);
}
.map__cap{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:16px;font-size:.9rem;color:#4a5b51;
}

/* ---------- footer ---------- */
.foot{background:var(--bark-deep);color:#c3d1bd;padding-block:64px 0}
.foot__grid{display:grid;grid-template-columns:1.4fr .8fr 1fr;gap:var(--gap)}
.foot__brand{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.foot__brand img{width:46px;height:auto}
.foot__brand b{font-family:var(--fa-display);font-size:1.1rem;color:#f0f4ec}
html[dir="ltr"] .foot__brand b{font-family:var(--en-display)}
.foot h4{font-size:.8rem;letter-spacing:.12em;color:var(--halo-soft);font-family:var(--fa-body);font-weight:500;margin-bottom:18px}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:11px;font-size:.92rem}
.foot a:hover{color:#f0f4ec}
.foot p{font-size:.94rem;max-width:44ch}
.foot__bar{margin-top:56px;border-block-start:1px solid rgba(217,184,119,.16);padding-block:22px;font-size:.85rem;color:#93a68c;text-align:center}

/* ---------- reveal ---------- */
.rv{opacity:0;transform:translateY(26px);transition:opacity .9s cubic-bezier(.2,.7,.3,1),transform .9s cubic-bezier(.2,.7,.3,1)}
.rv.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media(max-width:1000px){
  .about,.intl,.contact{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr 1fr}
  .gallery{grid-template-columns:1fr 1fr;grid-auto-rows:clamp(180px,28vw,260px)}
  .shot--wide{grid-column:span 1}
  .figure img{aspect-ratio:16/10}
}
@media(max-width:860px){
  .burger{display:grid}
  .nav{
    position:fixed;inset-block-start:76px;inset-inline:0;
    background:var(--paper);border-block-end:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;padding:12px var(--pad) 24px;
    box-shadow:0 24px 40px -34px rgba(20,37,28,.8);
    clip-path:inset(0 0 100% 0);transition:clip-path .42s cubic-bezier(.2,.7,.3,1);
  }
  .nav.is-open{clip-path:inset(0 0 0 0)}
  .nav a{padding:13px 4px;font-size:1rem;border-block-end:1px solid var(--line)}
  .nav a::after{display:none}
  .head .btn--sm{display:none}
  .stats__grid{grid-template-columns:1fr 1fr}
  .stat:nth-child(3){border-inline-start:0}
  .stat{border-block-start:1px solid rgba(217,184,119,.14)}
  .stat:nth-child(-n+2){border-block-start:0}
  .cards{grid-template-columns:1fr}
  .row{grid-template-columns:1fr;gap:10px}
  .profile{grid-template-columns:1fr}
  .foot__grid{grid-template-columns:1fr}
  .hero{min-height:auto;padding-block:130px 80px}
  .scroll-cue{display:none}
}
@media(max-width:520px){
  .gallery{grid-template-columns:1fr;grid-auto-rows:clamp(210px,58vw,290px)}
  .shot--wide{grid-column:span 1}
  .brand span{display:none}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .rv{opacity:1;transform:none}
  .halo path{stroke-dashoffset:0}
}