/* فونت‌ها: فایل‌ها را با همین نام‌ها در پوشه fonts آپلود کن */
@font-face{font-family:"HeadFont";src:url("../fonts/heading-extrabold.woff2") format("woff2");font-weight:800;font-style:normal;font-display:swap}
@font-face{font-family:"BodyFont";src:url("../fonts/body-regular.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"BodyFont";src:url("../fonts/body-bold.woff2") format("woff2");font-weight:700;font-style:normal;font-display:swap}

/* توکن‌ها */
:root{
  --cream:#FFFFFF;--sand:#F5F7FB;--line:#E1E6F0;--tan:#2F6BFF;--navy:#171717;
  --navy-2:#2A2D35;--mute:#5A6072;--accent:#1A56F0;--accent-2:#0F43C9;
  --font-h1:"HeadFont",Tahoma,sans-serif;
  --font-body:"BodyFont",Tahoma,sans-serif;
  --r:8px;--r-lg:12px;--sp:1rem;--focus:var(--accent);
  /* رنگ دکمه‌ها: حالت عادی و حالت انتخاب‌شده */
  --c-bg:var(--sand);--c-fg:var(--navy);
  --c-on-bg:var(--accent);--c-on-fg:#fff;
}
.hero{
  --c-bg:var(--navy-2);--c-fg:var(--cream);
  --c-on-bg:var(--tan);--c-on-fg:#fff;
  --focus:var(--tan);--mute:var(--sand);
}

/* پایه */
*,*::before,*::after{box-sizing:border-box}
*{margin:0}
html{scroll-behavior:smooth;scroll-padding-top:1rem;-webkit-text-size-adjust:100%}
body{font-family:var(--font-body);font-weight:400;font-size:1rem;line-height:1.9;background:var(--cream);color:var(--navy)}
h1{font-family:var(--font-h1);font-weight:800}
h2,h3,h4,h5,h6{font-family:var(--font-body);font-weight:700;line-height:1.5}
a{color:inherit}
:focus-visible{outline:3px solid var(--focus);outline-offset:3px;border-radius:var(--r)}
.sr{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip{position:absolute;inset-inline-start:1rem;top:-4rem;z-index:10;background:var(--accent);color:#fff;padding:.4rem 1rem;border-radius:var(--r);transition:top .2s}
.skip:focus{top:1rem}

/* دکمه‌ها: فلت، بدون کادر، هاور با جابه‌جایی رنگ و زوم */
.chip,.btn{
  font:inherit;border:0;border-radius:var(--r);cursor:pointer;text-decoration:none;
  display:inline-flex;align-items:center;justify-content:center;
  min-height:2.5rem;padding:.2rem 1.1rem;line-height:1.5;
  transition:transform .2s ease,background-color .2s ease,color .2s ease;
}
.chip{background:var(--c-bg);color:var(--c-fg)}
.chip[aria-pressed=true]{background:var(--c-on-bg);color:var(--c-on-fg)}
.btn{font-weight:700;background:var(--c-on-bg);color:var(--c-on-fg)}
.btn.alt{background:var(--c-bg);color:var(--c-fg)}
@media (hover:hover){
  .chip[aria-pressed=false]:hover{background:var(--c-on-bg);color:var(--c-on-fg);transform:scale(1.05)}
  .btn:hover{background:var(--c-bg);color:var(--c-fg);transform:scale(1.05)}
  .btn.alt:hover{background:var(--c-on-bg);color:var(--c-on-fg)}
}
.chip[aria-pressed=false]:active,.btn:active{transform:scale(.97)}
.chips{display:flex;flex-wrap:wrap;gap:.5rem;margin:.75rem 0 1rem}

/* هیرو */
.hero{position:relative;height:100vh;height:100svh;min-height:36rem;background:#171717;color:var(--cream);overflow:hidden}
#cv{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:pan-y;cursor:crosshair}
.nojs{position:absolute;inset:0;display:grid;place-items:center;font-family:var(--font-h1);font-weight:800;font-size:clamp(2rem,9vw,4rem)}
.hud{position:absolute;inset-inline:0;bottom:clamp(1.5rem,5vh,3rem);display:flex;flex-direction:column;align-items:center;text-align:center;padding-inline:1rem;pointer-events:none}
.hud>*{pointer-events:auto}
.role{font-weight:700;font-size:clamp(1.05rem,3.2vw,1.6rem);line-height:1.6}
.lead{color:var(--sand);font-size:clamp(.92rem,2.4vw,1.05rem);max-width:38rem;margin-top:.1rem}
.copy{min-height:6.2em}
.hud .chips{flex-direction:column;align-items:center;gap:.5rem;margin:.6rem 0 1rem}
.chips .row{display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem}
@media (max-width:30rem){.hud .chips,.chips .row{gap:.35rem}.hud .chip{padding-inline:.6rem;font-size:.85rem}}
@media (max-width:24rem){.hud{padding-inline:.5rem}.hud .chips,.chips .row{gap:.25rem}.hud .chip{padding-inline:.45rem;font-size:.8rem}}

/* چیدمان کلی */
main{width:min(100% - 2.5rem,68rem);margin-inline:auto}
section{padding-block:clamp(3rem,8vw,5rem) 1rem}
h2{font-size:clamp(1.5rem,4vw,2rem);margin-bottom:.4rem}
.sub{color:var(--mute);max-width:40rem}
.about{max-width:42rem;font-size:1.1rem}

/* نمونه‌کارها: ریل افقی با اسنپ */
.rail-head{display:flex;justify-content:space-between;align-items:flex-end;gap:1rem}
.rail-nav{display:none;gap:.4rem;flex:none}
@media (hover:hover) and (min-width:48rem){.rail-nav{display:flex}}
.nav-btn{font:inherit;font-size:1.2rem;width:2.5rem;height:2.5rem;border:1px solid var(--line);background:#fff;color:var(--navy);border-radius:var(--r);cursor:pointer;transition:background-color .2s,color .2s,opacity .2s}
.nav-btn:hover:not(:disabled){background:var(--accent);color:#fff;border-color:var(--accent)}
.nav-btn:disabled{opacity:.35;cursor:default}
.rail{display:flex;gap:1rem;overflow-x:auto;scroll-snap-type:x mandatory;overscroll-behavior-x:contain;padding:.7rem .1rem 1rem;scrollbar-width:thin;scrollbar-color:var(--tan) var(--sand)}
.proj{flex:0 0 min(86%,23rem);scroll-snap-align:start;display:flex;flex-direction:column;gap:.55rem;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:1.1rem 1.2rem;transition:transform .25s ease,box-shadow .25s ease,border-color .25s}
@media (hover:hover){.proj:hover{transform:translateY(-4px);box-shadow:0 10px 24px rgba(23,23,23,.08);border-color:#C9D6F5}}
.proj[hidden]{display:none}
.proj-top{display:flex;justify-content:space-between;align-items:flex-start;gap:.6rem}
.logo{position:relative;flex:none;width:4rem;height:4rem;border-radius:var(--r);border:1px solid var(--line);background:var(--sand);display:grid;place-items:center;overflow:hidden}
.logo img{width:100%;height:100%;object-fit:contain;padding:.35rem;background:#fff}
.logo img[hidden]{display:none}
.logo-ph{font-weight:800;font-size:1.5rem;color:var(--accent)}
.logo.up{cursor:pointer;border-style:dashed}
.logo.up::after{content:"+ لوگو";position:absolute;inset-inline:0;bottom:0;font-size:.62rem;text-align:center;background:rgba(26,86,240,.9);color:#fff;line-height:1.5}
.logo.up:focus-visible{outline:3px solid var(--accent)}
.tags{display:flex;flex-wrap:wrap;gap:.3rem;justify-content:flex-end}
.tag{font-size:.78rem;font-weight:700;line-height:1.5;padding:.1rem .55rem;border-radius:6px;background:#E3EBFF;color:#0F43C9}
.proj h3{font-size:1.1rem}
.site{align-self:flex-start;font-size:.85rem;font-weight:700;text-decoration:none;color:var(--accent);border-bottom:1px solid transparent}
@media (hover:hover){.site:hover{border-color:var(--accent)}}
.pts{margin:0;padding-inline-start:1.1rem;color:var(--mute);font-size:.93rem;display:grid;gap:.3rem}
.pts a{color:var(--accent);font-weight:700}
#work,#exp{content-visibility:auto;contain-intrinsic-size:auto 30rem}

/* سوابق */
.tl{list-style:none;padding:0;margin:1rem .4rem 0;border-inline-start:3px solid var(--tan)}
.tl li{position:relative;padding:0 1.2rem 1.4rem}
.tl li::before{content:"";position:absolute;inset-inline-start:-.6rem;top:.7rem;width:.9rem;height:.9rem;border-radius:50%;background:var(--accent)}
.tl strong{display:block}
.tl span{color:var(--mute);font-size:.92rem}

/* تماس */
.links{list-style:none;padding:0;margin-top:1rem;display:grid;gap:.4rem;max-width:26rem}
.links li{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;border-bottom:1px solid var(--sand);padding-bottom:.4rem}
.links span{color:var(--mute)}
.links a{font-weight:700;text-decoration:none;border-bottom:2px solid var(--tan);transition:color .2s,border-color .2s}
@media (hover:hover){.links a:hover{color:var(--accent);border-color:var(--accent)}}

footer{text-align:center;color:var(--mute);padding:4rem 1rem 2rem;font-size:.9rem}

/* صفحه ۴۰۴ */
.nf{min-height:100vh;display:grid;place-content:center;gap:1rem;text-align:center;padding:2rem}
.nf h1{font-size:clamp(3rem,14vw,6rem);line-height:1.2}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important}
}