:root{
  --bg:#000000; --bg2:#0a0a0a; --fg:#ffffff; --muted:#8a8a8a;
  --card:rgba(255,255,255,.04); --border:rgba(255,255,255,.12);
  --p1:#ffffff; --p2:#cfcfcf; --p3:#8f8f8f; --p4:#e8e8e8;
  --glow:0 0 40px rgba(255,255,255,.22);
  --r:22px; --ease:cubic-bezier(.2,.8,.2,1);
}
:root.light{
  --bg:#ffffff; --bg2:#f2f2f2; --fg:#000000; --muted:#666666;
  --card:rgba(0,0,0,.04); --border:rgba(0,0,0,.14);
  --p1:#000000; --p2:#333333; --p3:#777777; --p4:#111111;
  --glow:0 0 40px rgba(0,0,0,.15);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:clip}
body{
  font-family:Vazirmatn,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif; background:var(--bg); color:var(--fg);
  overflow-x:clip; line-height:1.8; cursor:none; width:100%; max-width:100vw; position:relative;
  transition:background .5s var(--ease),color .5s var(--ease);
}
/* ===== ست کردن فونت مدرن و سنگین فارسی برای عناوین و تیترها ===== */
:root:not(.en) .hero-name, :root:not(.en) .title, :root:not(.en) .logo, :root:not(.en) .stat .num {
  font-family: Vazirmatn, system-ui, sans-serif;
  font-weight: 900;
  letter-spacing: -1px;
}
/* ===== فونت خفن انگلیسی هنگام انتخاب زبان EN ===== */
:root.en body{font-family:"Outfit","Space Grotesk",system-ui,sans-serif;line-height:1.7;letter-spacing:.1px}
:root.en .hero-name,:root.en .title,:root.en .logo,:root.en .stat .num,
:root.en .lang-name,:root.en .lang-badge,:root.en .show-head .title{
  font-family:"Clash Display","Outfit",sans-serif;letter-spacing:-.5px;font-weight:600}
:root.en .kicker,:root.en .nav-links a,:root.en .lang-meta span,:root.en .tags span,
:root.en .tl-date,:root.en .hero-tag{font-family:"Space Grotesk",sans-serif}
:root.en .hero-name{letter-spacing:-3px;font-weight:600;font-size:clamp(2.8rem,12vw,9rem)}
:root.en .title{font-weight:600}
:root.en .lang-badge{font-weight:500}
:root.en .lang-name{font-weight:600}
/* در حالت انگلیسی فاصله‌ی خطوط متن کمی بازتر و خواناتر */
:root.en .hero-desc,:root.en .lang-desc,:root.en .about-text p{line-height:1.7}
@media(max-width:820px){body{cursor:auto}}
a{color:inherit;text-decoration:none}

.bg-aurora{position:fixed;inset:0;z-index:-3;overflow:hidden;background:
  radial-gradient(1200px 600px at 80% -10%,rgba(255,255,255,.10),transparent),
  radial-gradient(900px 500px at 10% 110%,rgba(255,255,255,.06),transparent),var(--bg)}
.orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.18;mix-blend-mode:screen;animation:float 18s ease-in-out infinite}
.orb-1{width:480px;height:480px;background:#ffffff;top:-100px;right:-80px}
.orb-2{width:420px;height:420px;background:#bdbdbd;bottom:-120px;left:-60px;animation-delay:-6s}
.orb-3{width:360px;height:360px;background:#9a9a9a;top:40%;left:55%;animation-delay:-11s}
@keyframes float{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(40px,-50px) scale(1.15)}}
.grid-overlay{position:absolute;inset:0;background-image:
  linear-gradient(var(--border) 1px,transparent 1px),
  linear-gradient(90deg,var(--border) 1px,transparent 1px);
  background-size:60px 60px;mask-image:radial-gradient(ellipse at center,#000 30%,transparent 75%);opacity:.4}
#particles{position:fixed;inset:0;z-index:-2;pointer-events:none}

.cursor,.cursor-dot{position:fixed;top:0;left:0;border-radius:50%;pointer-events:none;z-index:200000;mix-blend-mode:difference}
.cursor{width:34px;height:34px;border:1.5px solid var(--p2);transition:transform .18s var(--ease),width .2s,height .2s,background .2s;transform:translate(-50%,-50%)}
.cursor-dot{width:6px;height:6px;background:var(--p2);transform:translate(-50%,-50%)}
.cursor.hover{width:60px;height:60px;background:rgba(255,255,255,.18)}
@media(max-width:820px){.cursor,.cursor-dot{display:none}}

.scroll-progress{position:fixed;top:0;right:0;height:3px;width:0;z-index:1000;max-width:100%;
  background:linear-gradient(90deg,var(--p1),var(--p2),var(--p3));box-shadow:var(--glow)}
:root.en .scroll-progress{right:auto;left:0}

.nav{position:fixed;top:0;inset-inline:0;z-index:900;display:flex;align-items:center;justify-content:space-between;
  padding:18px clamp(20px,5vw,70px);border:1px solid transparent;border-radius:0;
  transition:background .4s var(--ease),backdrop-filter .4s var(--ease),border-color .4s var(--ease),
    padding .4s var(--ease),margin .4s var(--ease),border-radius .4s var(--ease),box-shadow .4s var(--ease)}
.nav.scrolled{background:color-mix(in srgb,var(--bg) 65%,transparent);backdrop-filter:blur(20px) saturate(140%);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  border-color:var(--border);border-radius:18px;
  top:12px;inset-inline:clamp(12px,3vw,28px);
  padding:10px clamp(16px,4vw,32px);
  box-shadow:0 12px 40px rgba(0,0,0,.28)}
:root.light .nav.scrolled{box-shadow:0 12px 40px rgba(0,0,0,.1)}
.logo{font-weight:900;font-size:1.3rem;letter-spacing:1px;
  background:linear-gradient(90deg,var(--p1),var(--p2));-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;gap:28px;list-style:none}
.nav-links a{position:relative;font-size:.95rem;color:var(--muted);transition:color .3s}
.nav-links a::after{content:"";position:absolute;bottom:-6px;right:0;width:0;height:2px;
  background:linear-gradient(90deg,var(--p1),var(--p2));transition:width .3s var(--ease)}
.nav-links a:hover{color:var(--fg)}.nav-links a:hover::after{width:100%}
.nav-actions{display:flex;align-items:center;gap:10px}
.theme-toggle{background:var(--card);border:1px solid var(--border);width:42px;height:42px;border-radius:50%;
  display:grid;place-items:center;font-size:1.1rem;cursor:none;transition:.3s;color:var(--fg)}
.theme-toggle:hover{transform:rotate(40deg) scale(1.1)}
.lang-toggle{background:var(--card);border:1px solid var(--border);height:42px;min-width:48px;padding:0 14px;border-radius:40px;
  display:grid;place-items:center;cursor:none;color:var(--fg);transition:.3s var(--ease);position:relative;overflow:hidden}
.lang-toggle .lang-cur{font-family:"Space Grotesk",sans-serif;font-weight:700;font-size:.9rem;letter-spacing:.5px}
.lang-toggle:hover{background:var(--fg);color:var(--bg);border-color:var(--fg);transform:translateY(-2px)}
@media(max-width:820px){
  .nav-links{display:none}
  /* روی موبایل هدر همیشه یک نوار شناور و گرد است (بدون لبه‌ی تیز) */
  .nav{
    top:10px;inset-inline:10px;border-radius:16px;
    padding:10px 16px;
    background:color-mix(in srgb,var(--bg) 62%,transparent);
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    border-color:var(--border);
    box-shadow:0 10px 30px rgba(0,0,0,.3);
  }
  :root.light .nav{box-shadow:0 10px 30px rgba(0,0,0,.1)}
  .nav.scrolled{top:10px;inset-inline:10px;box-shadow:0 12px 34px rgba(0,0,0,.34)}
  .logo{font-size:1.1rem}
  .theme-toggle{width:38px;height:38px}
}

.scene{perspective:1200px;perspective-origin:50% 30%}
.section{max-width:1100px;margin:0 auto;padding:clamp(80px,12vh,160px) clamp(20px,5vw,40px);position:relative;transform-style:preserve-3d}

.hero{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  position:relative;
  padding:clamp(80px,10vh,120px) clamp(20px,5vw,70px);
  overflow:hidden;
}
.hero-container{
  display:grid;
  grid-template-columns:1.2fr 1fr;
  gap:clamp(40px,6vw,90px);
  width:100%;
  max-width:1200px;
  align-items:center;
  transform-style:preserve-3d;
}

@media(max-width:960px){
  .hero{
    padding-top:125px !important;
    padding-bottom:40px !important;
    padding-left:20px !important;
    padding-right:20px !important;
    min-height:auto !important;
    width:100% !important;
    max-width:100vw !important;
    overflow:hidden !important;
  }
  .hero-container{
    grid-template-columns:1fr !important;
    text-align:center !important;
    gap:28px !important;
    width:100% !important;
    max-width:100% !important;
    transform:none !important;
    margin-top:10px !important;
  }
  .hero-content{
    width:100% !important;
    align-items:center !important;
  }
  .hero-tag{
    margin-bottom:14px !important;
  }
  .hero-name,
  :root.en .hero-name,
  :root:not(.en) .hero-name{
    text-align:center !important;
    display:block !important;
    margin-left:auto !important;
    margin-right:auto !important;
    width:100% !important;
    font-size:clamp(2.0rem, 8.5vw, 3.2rem) !important;
    letter-spacing:-1px !important;
    word-break:break-word !important;
    margin-bottom:4px !important;
  }
  .hero-role{
    font-size:clamp(1.05rem, 3.8vw, 1.35rem) !important;
    margin-top:8px !important;
  }
  .hero-desc{
    font-size:0.9rem !important;
    line-height:1.65 !important;
    margin-top:12px !important;
    max-width:100% !important;
  }
  .hero-cta{
    margin-top:20px !important;
    gap:10px !important;
    justify-content:center !important;
    width:100% !important;
  }
  .hero-visual{
    width:100% !important;
    max-width:100% !important;
    margin-top:10px !important;
  }
  .glass-deck{
    max-width:100% !important;
    padding:16px 14px !important;
    border-radius:18px !important;
    overflow:hidden !important;
    box-sizing:border-box !important;
  }
  .deck-body{
    font-size:0.75rem !important;
    line-height:1.6 !important;
  }
  .code-line{
    white-space:pre-wrap !important;
    word-break:break-word !important;
  }
  .code-line.indent{
    padding-left:10px !important;
  }
  .code-line.indent-2{
    padding-left:18px !important;
  }
  .hero-stats{
    margin-top:24px !important;
    gap:14px !important;
    justify-content:center !important;
    width:100% !important;
  }
  .stat .num{
    font-size:1.6rem !important;
  }
  .stat small{
    font-size:0.75rem !important;
  }
}

/* Badge شیشه‌ای درخشان بالای Hero */
.hero-tag{
  color:var(--fg);font-weight:500;margin-bottom:22px;letter-spacing:.5px;font-size:.85rem;
  display:inline-flex;align-items:center;gap:9px;
  padding:8px 18px;border-radius:40px;
  background:color-mix(in srgb,var(--fg) 5%,transparent);
  border:1px solid var(--border);
  backdrop-filter:blur(12px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  position:relative;overflow:hidden;
}
/* شاین متحرک روی badge */
.hero-tag::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(110deg,transparent 30%,color-mix(in srgb,var(--fg) 22%,transparent) 50%,transparent 70%);
  transform:translateX(-100%);
  animation:tagShine 4.5s ease-in-out infinite;
}
@keyframes tagShine{0%,60%{transform:translateX(-100%)}100%{transform:translateX(100%)}}
.hero-tag .dot{width:8px;height:8px;border-radius:50%;background:#22c55e;flex-shrink:0;
  box-shadow:0 0 0 0 rgba(34,197,94,.5);animation:dotPulse 2s ease-out infinite}
@keyframes dotPulse{0%{box-shadow:0 0 0 0 rgba(34,197,94,.5)}70%,100%{box-shadow:0 0 0 8px transparent}}

.hero-name{
  font-size:clamp(3.2rem,8vw,6.5rem);
  font-weight:900;
  line-height:.95;
  position:relative;
  text-align:start;
  background:linear-gradient(120deg,var(--fg),var(--p1) 45%,var(--p3) 70%,var(--fg));
  background-size:200% auto;
  -webkit-background-clip:text;background-clip:text;color:transparent;
  animation:nameShimmer 6s linear infinite;
}
:root:not(.en) .hero-content {
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
:root.en .hero-content {
  text-align: left;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

@keyframes nameShimmer{to{background-position:200% center}}
.hero-name::before{
  content:attr(data-text);position:absolute;inset:0;
  background:linear-gradient(120deg,var(--p3),var(--p1));-webkit-background-clip:text;background-clip:text;color:transparent;
  filter:blur(30px);opacity:.45;z-index:-1;
}
.hero-role{
  font-size:clamp(1.2rem,3.2vw,1.9rem);
  font-weight:700;
  margin-top:14px;
  min-height:1.4em;
}
.typed{background:linear-gradient(90deg,var(--p2),var(--p4));-webkit-background-clip:text;background-clip:text;color:transparent}
.caret{color:var(--p2);animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

.hero-desc{
  max-width:540px;
  color:var(--muted);
  margin-top:20px;
  font-size:1.02rem;
  line-height:1.8;
  text-align:start;
}
@media(max-width:960px){
  .hero-desc{
    text-align:center;
    margin-inline:auto;
  }
}

.hero-cta{
  display:flex;
  gap:16px;
  justify-content:flex-start;
  flex-wrap:wrap;
  margin-top:36px;
}
@media(max-width:960px){
  .hero-cta{
    justify-content:center;
  }
}

.hero-stats{
  display:flex;
  gap:clamp(20px,4vw,44px);
  align-items:center;
  justify-content:flex-start;
  margin-top:48px;
  flex-wrap:wrap;
}
@media(max-width:960px){
  .hero-stats{
    justify-content:center;
    margin-top:40px;
  }
}

.stat{display:flex;flex-direction:column;align-items:flex-start;transition:transform .3s var(--ease)}
:root:not(.en) .stat{align-items:flex-start}
@media(max-width:960px){
  .stat{
    align-items:center !important;
  }
}
.stat:hover{transform:translateY(-4px)}
.stat-div{width:1px;height:38px;background:linear-gradient(var(--border),transparent,var(--border))}
@media(max-width:820px){.hero-stats{gap:24px}.stat-div{display:none}}
.stat .num{font-size:clamp(1.8rem,5vw,2.5rem);font-weight:900;
  background:linear-gradient(90deg,var(--p1),var(--p2));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat small{color:var(--muted);font-size:.85rem}

/* سمت راست: شبیه‌ساز کد سه‌بعدی شیک */
.hero-visual{
  display:flex;
  align-items:center;
  justify-content:center;
  perspective:1600px;
  transform-style:preserve-3d;
  width:100%;
}
.glass-deck{
  position:relative;
  width:100%;
  max-width:440px;
  background:color-mix(in srgb,var(--bg) 60%,transparent);
  backdrop-filter:blur(24px) saturate(160%);
  -webkit-backdrop-filter:blur(24px) saturate(160%);
  border:1px solid var(--border);
  border-radius:24px;
  padding:26px 28px;
  box-shadow:0 35px 90px rgba(0,0,0,.55),
             inset 0 1px 0 rgba(255,255,255,.05);
  overflow:hidden;
  transition:transform .15s var(--ease);
}
:root.light .glass-deck{
  background:rgba(255,255,255,.45);
  box-shadow:0 35px 90px rgba(0,0,0,.12);
}

.deck-shimmer{
  position:absolute;inset:0;border-radius:24px;
  background:radial-gradient(400px circle at var(--mx,50%) var(--my,50%),
    color-mix(in srgb,var(--fg) 10%,transparent),
    transparent 55%);
  opacity:0;transition:opacity .4s;
  pointer-events:none;z-index:0;
}
.glass-deck:hover .deck-shimmer{opacity:1}

.deck-header{
  display:flex;align-items:center;gap:8px;
  border-bottom:1px solid var(--border);
  padding-bottom:14px;margin-bottom:18px;
  position:relative;z-index:2;
}
.deck-header .dot{width:11px;height:11px;border-radius:50%}
.deck-header .dot.red{background:#ff5f56}
.deck-header .dot.yellow{background:#ffbd2e}
.deck-header .dot.green{background:#27c93f}
.deck-header .deck-title{
  margin-inline-start:8px;
  font-family:"Space Grotesk",monospace;
  font-size:.85rem;color:var(--muted);
}

.deck-body{
  font-family:"Fira Code","Cascadia Code",Consolas,monospace;
  font-size:.9rem;line-height:1.75;
  color:var(--fg);
  position:relative;z-index:2;
  text-align:left;
  direction:ltr;
}
.code-line{white-space:pre}
.code-line.indent{padding-left:20px}
.code-line.indent-2{padding-left:40px}

/* سینتکس هایلایت کد */
.code-line .keyword{color:#f43f5e}
.code-line .variable{color:#38bdf8}
.code-line .property{color:#a855f7}
.code-line .string{color:#34d399}
.code-line .number{color:#fbbf24}

/* اورب‌های رنگی معلق */
.floating-orb{
  position:absolute;border-radius:50%;
  filter:blur(60px);opacity:.15;mix-blend-mode:screen;
  pointer-events:none;z-index:1;
  animation:floatOrb 15s ease-in-out infinite alternate;
}
.floating-orb.visual-1{
  width:160px;height:160px;
  background:#6366f1;
  top:-20px;right:-20px;
}
.floating-orb.visual-2{
  width:140px;height:140px;
  background:#a855f7;
  bottom:-30px;left:-30px;
  animation-delay:-6s;
}
@keyframes floatOrb{
  0%{transform:translate(0,0) scale(1)}
  100%{transform:translate(30px,-20px) scale(1.1)}
}

.scroll-hint{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);color:var(--muted);font-size:.8rem;display:flex;flex-direction:column;align-items:center;gap:8px}
.scroll-hint .mouse{width:24px;height:38px;border:2px solid var(--muted);border-radius:14px;position:relative;display:block}
.scroll-hint .mouse::after{content:"";position:absolute;top:7px;left:50%;transform:translateX(-50%);width:4px;height:8px;border-radius:4px;background:var(--p2);animation:wheel 1.6s infinite}
@keyframes wheel{0%{opacity:1;top:7px}100%{opacity:0;top:20px}}
/* روی موبایل یا صفحه‌های کوتاه، راهنمای اسکرول پنهان می‌شود تا روی آمارها نیفتد */
@media(max-width:820px),(max-height:760px){.scroll-hint{display:none}}

.btn{padding:14px 30px;border-radius:50px;font-weight:700;font-family:inherit;cursor:none;border:1px solid transparent;
  transition:transform .25s var(--ease),box-shadow .25s,background .3s;display:inline-block;position:relative;overflow:hidden}
.btn-primary{background:var(--fg);color:var(--bg);box-shadow:var(--glow)}
/* شاین عبوری روی دکمه‌ی اصلی هنگام hover */
.btn-primary::before{content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(110deg,transparent,rgba(255,255,255,.55),transparent);
  transform:skewX(-20deg);transition:left .6s var(--ease)}
:root.light .btn-primary::before{background:linear-gradient(110deg,transparent,rgba(0,0,0,.25),transparent)}
.btn-primary:hover::before{left:130%}
.btn-primary:hover{transform:translateY(-4px) scale(1.03);box-shadow:0 14px 50px rgba(255,255,255,.25)}
:root.light .btn-primary:hover{box-shadow:0 14px 50px rgba(0,0,0,.25)}
.btn-ghost{background:var(--card);border-color:var(--border);color:var(--fg)}
.btn-ghost:hover{transform:translateY(-4px);border-color:var(--p2)}
.btn.big{font-size:1.2rem;padding:18px 44px;margin-top:24px}

.section-head{margin-bottom:54px;text-align:center}
.kicker{color:var(--p2);font-weight:600;letter-spacing:3px;font-size:.85rem}
.title{font-size:clamp(2rem,5vw,3.4rem);font-weight:900;margin-top:10px}
.grad{background:linear-gradient(90deg,var(--p1),var(--p3));-webkit-background-clip:text;background-clip:text;color:transparent}

.about-card,.about-side,.skill-card,.project,.contact-card,.tl-body{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r);backdrop-filter:blur(14px)}

.about-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:24px}
.about-card{padding:38px}
.about-text p{color:var(--muted);margin-bottom:16px}
.about-text p:first-child{color:var(--fg)}
.chips{list-style:none;display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.chips li{padding:7px 16px;border:1px solid var(--border);border-radius:30px;font-size:.85rem;background:var(--card)}
.about-side{padding:30px;display:flex;flex-direction:column;gap:18px;justify-content:center}
.info-row{display:flex;justify-content:space-between;align-items:center;padding-bottom:14px;border-bottom:1px dashed var(--border)}
.info-row:last-child{border:none;padding:0}
.info-row span{color:var(--muted);font-size:.9rem;display:inline-flex;align-items:center;gap:8px}
.info-row span .bi{font-size:1rem;color:var(--fg)}
.online{color:var(--p4)}
@media(max-width:780px){.about-grid{grid-template-columns:1fr}}

/* ===== Skills — Bento Grid redesign ===== */
.skills-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
@media(max-width:900px){.skills-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.skills-grid{grid-template-columns:1fr}}

.skill-card{
  padding:32px 28px;
  position:relative;
  overflow:hidden;
  border-radius:24px;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s;
  cursor:default;
  isolation:isolate;
}
/* شاین متحرک پشت کارت */
.skill-card::before{
  content:"";
  position:absolute;
  inset:-60px;
  background:radial-gradient(circle at var(--mx,50%) var(--my,50%),
    color-mix(in srgb,var(--fg) 9%,transparent) 0%,
    transparent 65%);
  opacity:0;
  transition:opacity .4s;
  pointer-events:none;
  z-index:0;
}
.skill-card:hover::before{opacity:1}

/* لاین درخشش بالای کارت */
.skill-card::after{
  content:"";
  position:absolute;
  top:0;inset-inline:20%;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--fg),transparent);
  opacity:0;
  transition:opacity .4s var(--ease),inset-inline .4s var(--ease);
}
.skill-card:hover::after{opacity:.35;inset-inline:10%}

.skill-card:hover{
  transform:translateY(-8px) scale(1.015);
  box-shadow:0 28px 70px rgba(0,0,0,.45),0 0 0 1px color-mix(in srgb,var(--fg) 20%,transparent);
  border-color:color-mix(in srgb,var(--fg) 28%,transparent);
}
:root.light .skill-card:hover{box-shadow:0 28px 70px rgba(0,0,0,.14),0 0 0 1px rgba(0,0,0,.14)}

.bi{width:1em;height:1em;display:inline-block;vertical-align:-.125em;fill:currentColor}

/* آیکون بزرگ بالای کارت */
.skill-top{
  display:flex;align-items:center;gap:16px;margin-bottom:24px;position:relative;z-index:1;
}
.skill-ico{
  display:grid;place-items:center;
  width:52px;height:52px;border-radius:16px;flex-shrink:0;
  font-size:1.5rem;color:var(--fg);
  background:color-mix(in srgb,var(--fg) 8%,transparent);
  border:1px solid var(--border);
  transition:.4s var(--ease);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.skill-card:hover .skill-ico{
  background:var(--fg);color:var(--bg);
  transform:rotate(-8deg) scale(1.1);
  box-shadow:0 8px 24px rgba(0,0,0,.3);
}
:root.light .skill-card:hover .skill-ico{box-shadow:0 8px 24px rgba(0,0,0,.12)}

.skill-card h3{
  font-size:1.15rem;font-weight:800;letter-spacing:-.3px;
  position:relative;z-index:1;
}

/* لیست مهارت‌ها — چیپ‌های مدرن */
.skill-list{
  list-style:none;
  display:flex;flex-wrap:wrap;gap:8px;
  position:relative;z-index:1;
}
.skill-list li{
  padding:7px 14px;
  border-radius:40px;
  font-size:.83rem;font-weight:500;
  color:var(--muted);
  border:1px solid var(--border);
  background:color-mix(in srgb,var(--fg) 4%,transparent);
  transition:color .3s var(--ease),background .3s var(--ease),
             border-color .3s var(--ease),transform .25s var(--ease),
             box-shadow .3s;
  cursor:default;
}
.skill-list li:hover{
  color:var(--fg);
  background:color-mix(in srgb,var(--fg) 12%,transparent);
  border-color:color-mix(in srgb,var(--fg) 35%,transparent);
  transform:translateY(-2px);
  box-shadow:0 4px 16px rgba(0,0,0,.2);
}
:root.light .skill-list li:hover{box-shadow:0 4px 16px rgba(0,0,0,.08)}

#projects{position:relative;z-index:20}
.projects{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:24px;
  position:relative;
  z-index:20;
}
/* projects breakpoint unified at 960px */
.project{
  padding:32px 28px;
  position:relative;
  overflow:hidden;
  display:flex;
  flex-direction:column;
  border-radius:26px;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .35s,background .35s;
  cursor:pointer;
  z-index: 10;
  touch-action: manipulation;
  background:color-mix(in srgb,var(--bg) 60%,transparent);
  backdrop-filter:blur(20px) saturate(150%);
  -webkit-backdrop-filter:blur(20px) saturate(150%);
  border:1px solid var(--border);
}
.project::after{
  content:"";
  position:absolute;
  top:0;inset-inline:25%;
  height:1.5px;
  background:linear-gradient(90deg,transparent,var(--fg),transparent);
  opacity:0;
  transition:opacity .4s,inset-inline .5s var(--ease);
}
.project:hover::after{opacity:.5;inset-inline:8%}
.project:hover{
  transform:translateY(-8px) scale(1.015);
  box-shadow:0 30px 70px rgba(0,0,0,.45), 0 0 30px color-mix(in srgb,var(--fg) 8%,transparent);
  border-color:color-mix(in srgb,var(--fg) 35%,transparent);
}
.proj-head{display:flex;flex-direction:column;align-items:flex-start}
.project .emoji{
  display:grid;place-items:center;width:56px;height:56px;border-radius:18px;font-size:1.75rem;
  color:var(--fg);background:color-mix(in srgb,var(--fg) 7%,transparent);border:1px solid var(--border);
  transition:.4s var(--ease);flex-shrink:0;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.project:hover .emoji{
  background:var(--fg);color:var(--bg);
  transform:rotate(-8deg) scale(1.1);
  box-shadow:0 10px 25px rgba(0,0,0,.3);
}
.project h3{font-size:1.3rem;font-weight:800;margin:18px 0 10px;line-height:1.35;letter-spacing:-.3px}
.project p{color:var(--muted);font-size:.92rem;line-height:1.8;margin-bottom:22px;flex:1}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:12px}
.tags span{
  font-size:.76rem;font-weight:500;padding:5px 14px;border-radius:30px;
  background:color-mix(in srgb,var(--fg) 5%,transparent);color:var(--muted);border:1px solid var(--border);
  transition:color .3s, border-color .3s, background .3s;
}
.project:hover .tags span{
  color:var(--fg);
  border-color:color-mix(in srgb,var(--fg) 28%,transparent);
}
.proj-foot{margin-top:18px;padding-top:14px;border-top:1px dashed color-mix(in srgb,var(--border) 50%,transparent)}
.proj-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--fg);font-weight:700;font-size:.92rem;
  transition:color .3s, transform .3s;
}
.proj-link::after{content:" ←";transition:transform .25s var(--ease)}
.project:hover .proj-link::after{transform:translateX(-6px)}
:root.en .proj-link::after{content:" →"}
:root.en .project:hover .proj-link::after{transform:translateX(6px)}

/* ===== موبایل و تبلت: چیدمان یکپارچه و خفن بدون تداخل ===== */
@media(max-width:960px){
  .section{
    padding:70px 18px 40px !important;
    scroll-margin-top:70px !important;
  }
  .section-head{
    margin-bottom:32px !important;
  }
  .title{
    font-size:clamp(1.6rem, 5.5vw, 2.3rem) !important;
  }
  .showcase{
    padding:80px 18px 40px !important;
    scroll-margin-top:70px !important;
  }
  .show-head{
    margin-bottom:32px !important;
  }
  .projects{
    display:grid !important;
    grid-template-columns:1fr !important;
    gap:16px !important;
    width:100% !important;
  }
  .project{
    padding:22px 18px !important;
    border-radius:20px !important;
    background:color-mix(in srgb,var(--card) 95%,transparent) !important;
    border:1px solid var(--border) !important;
    box-shadow:0 8px 24px rgba(0,0,0,.25) !important;
  }
  .proj-head{
    flex-direction:row !important;
    align-items:center !important;
    gap:12px !important;
    margin-bottom:10px !important;
  }
  .project .emoji{
    width:46px !important;
    height:46px !important;
    font-size:1.3rem !important;
    border-radius:14px !important;
    margin:0 !important;
  }
  .project h3{
    font-size:1.08rem !important;
    font-weight:800 !important;
    margin:0 !important;
    line-height:1.3 !important;
    flex:1 !important;
  }
  .project p{
    font-size:0.85rem !important;
    line-height:1.65 !important;
    margin-bottom:12px !important;
    color:var(--muted) !important;
    display:-webkit-box !important;
    -webkit-line-clamp:3 !important;
    -webkit-box-orient:vertical !important;
    overflow:hidden !important;
  }
  .tags{
    gap:6px !important;
    padding-top:0 !important;
  }
  .tags span{
    font-size:0.71rem !important;
    padding:4px 10px !important;
  }
  .proj-foot{
    margin-top:12px !important;
    padding-top:10px !important;
  }
  .proj-link{
    font-size:0.85rem !important;
  }
}

.timeline{position:relative;max-width:760px;margin:0 auto;padding-right:30px}
.timeline::before{content:"";position:absolute;top:0;bottom:0;right:8px;width:2px;background:linear-gradient(var(--p1),var(--p2),transparent)}
.tl-item{position:relative;padding:0 36px 40px 0}
.tl-item::before{content:"";position:absolute;right:1px;top:6px;width:16px;height:16px;border-radius:50%;
  background:var(--p2);box-shadow:0 0 0 5px color-mix(in srgb,var(--p2) 25%,transparent)}
.tl-body{padding:22px 26px}
.tl-date{color:var(--p2);font-size:.85rem;font-weight:600}
/* تایم‌لاین در حالت انگلیسی (LTR) از سمت چپ */
:root.en .timeline{padding-right:0;padding-left:30px}
:root.en .timeline::before{right:auto;left:8px}
:root.en .tl-item{padding:0 0 40px 36px}
:root.en .tl-item::before{right:auto;left:1px}
.tl-body h3{margin:6px 0 4px;font-size:1.2rem}
.tl-body .co{color:var(--muted);font-size:.9rem;margin-bottom:8px}

.contact{text-align:center}
.contact-card{max-width:680px;margin:0 auto;padding:60px 40px}
.contact-card p{color:var(--muted);margin-top:10px}
.contact-methods{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:26px}
.contact-methods .btn{margin-top:0}
.contact-methods .btn.big{font-size:1.1rem;padding:16px 34px}
.socials{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:34px}
.socials a{display:inline-flex;align-items:center;gap:9px;color:var(--muted);transition:color .3s, background .3s, border-color .3s;
  padding:10px 18px;border-radius:40px;border:1px solid var(--border);background:var(--card)}
.socials a .bi{font-size:1.2rem}
.socials a:hover{color:var(--bg);background:var(--fg);border-color:var(--fg)}
.footer{text-align:center;padding:40px 20px;color:var(--muted);font-size:.9rem;border-top:1px solid var(--border);margin-top:40px;position:relative;z-index:10}

.reveal{opacity:0;transform:translateY(60px);
  transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.show{opacity:1;transform:translateY(0)}

.tilt{transform-style:preserve-3d;transition:transform .15s var(--ease)}

/* ===== reveal کارت‌های lang با stagger ===== */
.lang-card.reveal{
  opacity:0;
  transform:translateY(50px) scale(0.95);
  transition:opacity .7s var(--ease), transform .7s var(--ease);
}
.lang-card.reveal.show{
  opacity:1;
  transform:translateY(0) scale(1);
}

/* ===== بخش Stack — Bento Card Deck سه‌بعدی نئونی ===== */
.showcase{
  position:relative;width:100%;max-width:100vw;
  padding:clamp(80px,12vh,140px) clamp(20px,5vw,40px);
  overflow:hidden;
}
.showcase-stage{
  position:relative;width:100%;
  display:flex;flex-direction:column;align-items:center;
}

/* تیتر */
.show-head{text-align:center;margin-bottom:clamp(48px,8vh,80px);pointer-events:none}
.show-head .title{font-size:clamp(1.8rem,4vw,2.8rem)}

/* گرید کارت‌ها */
.stack-stage{
  display:grid;
  grid-template-columns:repeat(6, 1fr);
  gap:24px;
  width:100%;
  max-width:1100px;
}
@media(max-width:1024px){.stack-stage{grid-template-columns:repeat(4, 1fr)}}
/* stack mobile grid fixed */

/* Bento Sizing */
.lang-card:nth-child(1) { grid-column: span 3; } /* JS */
.lang-card:nth-child(2) { grid-column: span 3; } /* TS */
.lang-card:nth-child(3) { grid-column: span 2; } /* Python */
.lang-card:nth-child(4) { grid-column: span 2; } /* React */
.lang-card:nth-child(5) { grid-column: span 2; } /* DB */

@media(max-width:1024px){
  .lang-card:nth-child(1) { grid-column: span 2; }
  .lang-card:nth-child(2) { grid-column: span 2; }
  .lang-card:nth-child(3) { grid-column: span 2; }
  .lang-card:nth-child(4) { grid-column: span 2; }
  .lang-card:nth-child(5) { grid-column: span 4; }
}
@media(max-width:768px){
  .showcase{
    padding-top:100px !important;
    scroll-margin-top:70px !important;
  }
  .stack-stage{
    display:flex !important;
    flex-direction:column !important;
    gap:16px !important;
    width:100% !important;
  }
  .lang-card,
  .lang-card:nth-child(1),
  .lang-card:nth-child(2),
  .lang-card:nth-child(3),
  .lang-card:nth-child(4),
  .lang-card:nth-child(5){
    grid-column:auto !important;
    width:100% !important;
    padding:22px 18px !important;
    border-radius:20px !important;
  }
  .lang-badge{
    width:48px !important;
    height:48px !important;
    font-size:1.15rem !important;
    border-radius:14px !important;
    margin-bottom:16px !important;
  }
  .lang-info .lang-name{
    font-size:1.1rem !important;
    gap:8px !important;
  }
  .lang-info .lang-name small{
    font-size:0.6em !important;
    padding:3px 10px !important;
  }
  .lang-info .lang-desc{
    font-size:0.86rem !important;
    line-height:1.65 !important;
    margin-bottom:16px !important;
  }
  .lang-meta span{
    font-size:0.72rem !important;
    padding:4px 10px !important;
  }
}

/* استایل کارت‌های شیشه‌ای رنگی */
.lang-card{
  position:relative;
  display:flex;flex-direction:column;gap:0;
  background:color-mix(in srgb,var(--bg) 60%,transparent);
  backdrop-filter:blur(20px) saturate(150%);
  -webkit-backdrop-filter:blur(20px) saturate(150%);
  border:1px solid var(--border);
  border-radius:26px;
  padding:32px;
  overflow:hidden;
  cursor:default;
  isolation:isolate;
  transition:transform .4s var(--ease), box-shadow .4s var(--ease), border-color .35s;
  will-change:transform;
  transform-style:preserve-3d;
}
:root.light .lang-card{
  background:rgba(255,255,255,.5);
}

/* اختصاصی کردن رنگ نئونی برای هر کارت بر اساس تمپلیت رنگی تکنولوژی */
.lang-card[data-tech="js"] { --neon-color: #ffd600; --neon-bg: rgba(255,214,0,0.06); }
.lang-card[data-tech="ts"] { --neon-color: #007acc; --neon-bg: rgba(0,122,204,0.06); }
.lang-card[data-tech="py"] { --neon-color: #3776ab; --neon-bg: rgba(55,118,171,0.06); }
.lang-card[data-tech="react"] { --neon-color: #00d8ff; --neon-bg: rgba(0,216,255,0.06); }
.lang-card[data-tech="db"] { --neon-color: #a855f7; --neon-bg: rgba(168,85,247,0.06); }

/* شاین موس رنگی اختصاصی */
.lang-card::before{
  content:"";
  position:absolute;
  inset:-80px;
  background:radial-gradient(
    400px circle at var(--mx,50%) var(--my,50%),
    color-mix(in srgb,var(--neon-color) 15%,transparent),
    transparent 65%
  );
  opacity:0;
  transition:opacity .5s;
  pointer-events:none;
  z-index:0;
}
.lang-card:hover::before{opacity:1}

/* خط درخشش رنگی بالا */
.lang-card::after{
  content:"";
  position:absolute;
  top:0;inset-inline:25%;
  height:1.5px;
  background:linear-gradient(90deg,transparent,var(--neon-color),transparent);
  opacity:0;
  transition:opacity .4s,inset-inline .5s var(--ease);
}
.lang-card:hover::after{opacity:.7;inset-inline:6%}

/* هاور کارت */
.lang-card:hover{
  transform:translateY(-8px) scale(1.015);
  box-shadow:0 30px 70px rgba(0,0,0,.45),
             0 0 40px var(--neon-bg),
             inset 0 1px 0 rgba(255,255,255,.05);
  border-color:color-mix(in srgb,var(--neon-color) 40%,transparent);
}
:root.light .lang-card:hover{
  box-shadow:0 30px 70px rgba(0,0,0,.08),
             0 0 40px var(--neon-bg);
}

/* دایره یا بج آیکون */
.lang-badge{
  display:inline-flex;align-items:center;justify-content:center;
  width:58px;height:58px;
  border-radius:18px;
  font-size:1.4rem;font-weight:900;font-family:"Clash Display","Outfit",monospace;
  color:var(--fg);
  background:color-mix(in srgb,var(--fg) 6%,transparent);
  border:1px solid var(--border);
  margin-bottom:24px;
  flex-shrink:0;
  transition:.4s var(--ease);
  position:relative;z-index:1;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.lang-card:hover .lang-badge{
  background:var(--neon-color);
  color:var(--bg);
  transform:rotate(-8deg) scale(1.1);
  box-shadow:0 10px 25px color-mix(in srgb,var(--neon-color) 35%,transparent);
}

/* اطلاعات کارت */
.lang-info{position:relative;z-index:1;flex:1;display:flex;flex-direction:column}

.lang-info .lang-name{
  font-size:clamp(1.2rem,2.5vw,1.45rem);
  font-weight:900;
  line-height:1.1;
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  margin-bottom:14px;
}
.lang-info .lang-name small{
  font-size:.62em;font-weight:600;
  color:var(--muted);
  padding:3px 12px;
  border:1px solid var(--border);
  border-radius:30px;
  background:color-mix(in srgb,var(--fg) 4%,transparent);
  letter-spacing:.3px;
  transition:color .3s;
}
.lang-card:hover .lang-name small{
  color:var(--fg);
  border-color:color-mix(in srgb,var(--neon-color) 40%,transparent);
}

.lang-info .lang-desc{
  color:var(--muted);
  font-size:.92rem;
  line-height:1.8;
  flex:1;
  margin-bottom:20px;
}

/* تگ‌ها */
.lang-meta{
  display:flex;flex-wrap:wrap;gap:8px;
  margin-top:auto;
}
.lang-meta span{
  font-size:.76rem;font-weight:500;
  padding:5px 14px;
  border-radius:30px;
  border:1px solid var(--border);
  background:color-mix(in srgb,var(--fg) 4%,transparent);
  color:var(--muted);
  transition:color .3s,background .3s,border-color .3s,transform .25s;
}
.lang-card:hover .lang-meta span{
  color:var(--fg);
  border-color:color-mix(in srgb,var(--neon-color) 30%,transparent);
}
.lang-meta span:hover{
  background:color-mix(in srgb,var(--neon-color) 12%,transparent) !important;
  color:var(--neon-color) !important;
  transform:translateY(-2px);
}

/* نوار پیشرفت و hint قدیمی — مخفی */
.show-progress,.show-hint{display:none}

/* ===== استایل مدال گلس‌مورفیک نئونی ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
  padding: 20px;
}
.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  width: 100%;
  max-width: 460px;
  background: color-mix(in srgb, var(--bg) 75%, transparent);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 30px;
  box-shadow: 0 35px 90px rgba(0, 0, 0, 0.6), 0 0 50px rgba(255, 255, 255, 0.03);
  transform: scale(0.9) translateY(20px);
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
  position: relative;
  overflow: hidden;
  text-align: center;
}
.modal-overlay.active .modal-card {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 16px;
  margin-bottom: 22px;
}
/* ===== کانوای اثر ماتریکس ===== */
#matrixCanvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.8s ease;
}
#matrixCanvas.active {
  opacity: 0.45;
  pointer-events: none;
}
:root.light #matrixCanvas.active {
  opacity: 0.55;
}

/* ===== System Architecture Visualizer ===== */
.arch-card {
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 30px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}
.arch-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 30px;
}
.arch-tab {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 10px 22px;
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s var(--ease);
}
.arch-tab:hover, .arch-tab.active {
  background: color-mix(in srgb, var(--fg) 14%, transparent);
  color: var(--fg);
  border-color: var(--fg);
}
.arch-diagram {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 20px 10px;
  position: relative;
}
.arch-node {
  flex: 1;
  min-width: 150px;
  background: color-mix(in srgb, var(--fg) 4%, transparent);
  border: 1px solid var(--border);
  padding: 20px 16px;
  border-radius: 18px;
  text-align: center;
  transition: all 0.3s var(--ease);
  position: relative;
}
.arch-node:hover {
  transform: translateY(-4px);
  border-color: #38bdf8;
  background: rgba(56, 189, 248, 0.08);
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.15);
}
.arch-node-ico {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: rgba(56, 189, 248, 0.12);
  color: #38bdf8;
  transition: all 0.3s var(--ease);
}
.arch-node-ico .bi {
  width: 22px;
  height: 22px;
}
.arch-node:hover .arch-node-ico {
  background: #38bdf8;
  color: #000000;
  transform: scale(1.1) rotate(-5deg);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.4);
}
.arch-node h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}
.arch-node p {
  font-size: 0.76rem;
  color: var(--muted);
  line-height: 1.4;
}
.arch-line {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  color: #10b981;
  font-size: 1.2rem;
  animation: pulse-arrow 1.5s infinite ease-in-out;
}
:root:not(.en) .arch-line { transform: rotate(180deg); }
@keyframes pulse-arrow {
  0%, 100% { opacity: 0.4; transform: translateX(0); }
  50% { opacity: 1; transform: translateX(-4px); }
}

/* ===== Project Estimator Calculator Responsive Fix ===== */
.estimator-card {
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: clamp(18px, 4vw, 36px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  width: 100%;
  max-width: 100%;
  overflow: hidden;
}
.est-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(20px, 4vw, 36px);
  align-items: stretch;
  width: 100%;
}
@media(max-width: 880px) {
  .est-grid { grid-template-columns: 1fr !important; gap: 24px; }
}
.est-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  width: 100%;
}
.est-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 30px;
  background: color-mix(in srgb, var(--fg) 5%, transparent);
  border: 1px solid var(--border);
  font-size: clamp(0.76rem, 2.5vw, 0.85rem);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s var(--ease);
  user-select: none;
  max-width: 100%;
  word-break: break-word;
}
.est-stat-row {
  display: flex;
  align-items: center;
  justify-content: space-around;
  margin-bottom: 16px;
  gap: 12px;
  flex-wrap: wrap;
}
.est-options h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 18px 0 10px;
  color: var(--fg);
}
.est-options h4:first-child { margin-top: 0; }
.est-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.est-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 30px;
  background: color-mix(in srgb, var(--fg) 5%, transparent);
  border: 1px solid var(--border);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s var(--ease);
  user-select: none;
}
.est-chip input { display: none; }
.est-chip:hover, .est-chip.active {
  background: color-mix(in srgb, var(--fg) 14%, transparent);
  border-color: var(--fg);
  color: var(--fg);
  transform: translateY(-2px);
}
.est-res-box {
  background: rgba(16, 185, 129, 0.05);
  border: 1px dashed rgba(16, 185, 129, 0.35);
  padding: 26px;
  border-radius: 20px;
  text-align: center;
  position: relative;
}
:root.light .est-res-box {
  background: #f0fdf4;
  border-color: #86efac;
}
.est-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  margin-bottom: 14px;
}
:root.light .est-badge {
  background: #d1fae5;
  color: #047857;
}
.est-stat-row {
  display: flex;
  align-items: center;
  justify-content: space-around;
  margin-bottom: 16px;
  gap: 12px;
}
.est-number {
  font-size: 2.6rem;
  font-weight: 900;
  color: #10b981;
  margin: 4px 0;
  font-family: "Space Grotesk", sans-serif;
  line-height: 1;
}
:root.light .est-number { color: #059669; }
.est-number small {
  font-size: 1rem;
  color: #10b981;
}
:root.light .est-number small { color: #059669; }
.est-cost {
  font-size: 1.1rem;
  font-weight: 700;
  color: #38bdf8;
  margin-top: 6px;
}
:root.light .est-cost { color: #0284c7; }
.est-stack-recommendation {
  margin: 16px 0;
  padding: 12px;
  background: color-mix(in srgb, var(--fg) 4%, transparent);
  border-radius: 14px;
  border: 1px solid var(--border);
}
.est-stack-recommendation small {
  display: block;
  font-size: 0.76rem;
  color: var(--muted);
  margin-bottom: 8px;
}
.est-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
}
.est-tags span {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  background: color-mix(in srgb, var(--fg) 10%, transparent);
  color: var(--fg);
  border: 1px solid var(--border);
}
.est-desc {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 18px;
}

/* ===== Section 08 Fast Contact & Booking Form ===== */
.booking-card {
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 36px;
  max-width: 780px;
  margin: 0 auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}
.booking-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media(max-width: 680px) {
  .form-row { grid-template-columns: 1fr; }
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: right;
}
:root.en .form-group { text-align: left; }
.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--fg);
}
.form-group input, .form-group textarea {
  width: 100%;
  padding: 14px 18px;
  border-radius: 14px;
  background: color-mix(in srgb, var(--fg) 4%, transparent);
  border: 1px solid var(--border);
  color: var(--fg);
  font-family: inherit;
  font-size: 0.92rem;
  outline: none;
  transition: all 0.3s var(--ease);
}
.form-group input:focus, .form-group textarea:focus {
  border-color: #10b981;
  background: color-mix(in srgb, var(--fg) 8%, transparent);
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.2);
}
.submit-btn {
  margin-top: 10px;
  width: 100%;
  justify-content: center;
}
.quality-card {
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}
.quality-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: color-mix(in srgb, var(--fg) 4%, transparent);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}
.quality-tab {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  padding: 8px 18px;
  border-radius: 12px;
  font-size: 0.86rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s var(--ease);
}
.quality-tab:hover {
  color: var(--fg);
}
.quality-tab.active {
  background: color-mix(in srgb, var(--fg) 10%, transparent);
  border-color: var(--border);
  color: var(--fg);
}
.quality-body {
  padding: 20px;
  direction: ltr;
  text-align: left;
}
.quality-code-box {
  background: #0d1117 !important;
  border: 1px solid rgba(255, 255, 255, 0.12) !important;
  padding: 20px !important;
  border-radius: 16px !important;
  overflow-x: auto;
  font-family: "Space Mono", "Fira Code", Consolas, monospace !important;
  font-size: 0.85rem !important;
  line-height: 1.65 !important;
  color: #c9d1d9 !important;
  max-height: 340px;
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.5);
}

/* ===== استایل API Sandbox (کامل، خوانا و ۱۰۰٪ ریسپانسو روی گوشی) ===== */
.api-card {
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border: 1px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  transform: none !important;
  width: 100%;
  max-width: 100%;
  position: relative;
  z-index: 20;
}
:root.light .api-card {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.08);
}

.api-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  background: color-mix(in srgb, var(--fg) 4%, transparent);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  scrollbar-width: thin;
}
:root.light .api-header {
  background: #f8fafc;
  border-bottom-color: #e2e8f0;
}

.api-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 12px;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  font-size: 0.84rem;
  font-family: "Space Mono", monospace;
  color: var(--muted);
  transition: all 0.25s var(--ease);
  white-space: nowrap;
  flex-shrink: 0;
}
.api-tab:hover {
  background: color-mix(in srgb, var(--fg) 8%, transparent);
  color: var(--fg);
}
.api-tab.active {
  background: color-mix(in srgb, var(--fg) 12%, transparent);
  border-color: var(--border);
  color: var(--fg);
  font-weight: 600;
}
:root.light .api-tab:hover {
  background: #edf2f7;
  color: #0f172a;
}
:root.light .api-tab.active {
  background: #e2e8f0;
  border-color: #cbd5e1;
  color: #0f172a;
}

.method {
  font-weight: 800;
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 6px;
  letter-spacing: 0.5px;
}
.method.get { background: rgba(16, 185, 129, 0.18); color: #10b981; }
.method.post { background: rgba(59, 130, 246, 0.18); color: #3b82f6; }
:root.light .method.get { background: #d1fae5; color: #047857; }
:root.light .method.post { background: #dbeafe; color: #1d4ed8; }

.path { font-weight: 600; }

.api-send-btn {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #10b981;
  color: #ffffff;
  border: none;
  font-weight: 700;
  font-size: 0.84rem;
  padding: 9px 18px;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s var(--ease);
  white-space: nowrap;
  flex-shrink: 0;
  position: relative;
  z-index: 30;
  pointer-events: auto !important;
  touch-action: manipulation;
}
:root.en .api-send-btn { margin-left: auto; margin-right: 0; }
:root:not(.en) .api-send-btn { margin-right: auto; margin-left: 0; }
.api-send-btn:hover {
  background: #059669;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.35);
}

.api-body {
  padding: 22px;
  direction: ltr;
  text-align: left;
}
.api-meta-bar {
  display: flex;
  gap: 18px;
  font-family: "Space Mono", monospace;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 14px;
  flex-wrap: wrap;
}
:root.light .api-meta-bar { color: #64748b; }
.status.200 { color: #10b981; font-weight: 700; }
:root.light .status.200 { color: #059669; }

@media(max-width: 640px) {
  .api-header {
    flex-wrap: wrap;
    gap: 6px;
    padding: 8px 10px;
  }
  .api-tab {
    padding: 5px 8px;
    font-size: 0.68rem;
  }
  .api-send-btn {
    width: 100%;
    justify-content: center;
    margin: 4px 0 0 0 !important;
    padding: 6px 10px;
    font-size: 0.72rem;
  }
  .api-meta-bar {
    gap: 6px;
    font-size: 0.6rem;
    margin-bottom: 6px;
  }
  .api-body {
    padding: 8px;
  }
  .api-response-code, #apiCodeOutput {
    padding: 8px !important;
    font-size: 0.58rem !important;
    line-height: 1.35 !important;
    max-height: 180px;
    letter-spacing: -0.3px;
    word-break: break-all;
    white-space: pre-wrap;
  }
}

/* جعبه ترمینال کد زنده - همیشه تاریک و شیک مثل ادیتور VSCode با بالاترین کنتراست */
.api-response-code {
  background: #0d1117 !important;
  border: 1px solid rgba(255, 255, 255, 0.12) !important;
  padding: 20px !important;
  border-radius: 16px !important;
  overflow-x: auto;
  overflow-y: auto;
  font-family: "Space Mono", "Fira Code", Consolas, monospace !important;
  font-size: 0.88rem !important;
  line-height: 1.65 !important;
  color: #34d399 !important;
  max-height: 320px;
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.5);
}

/* اسکرول‌بار اختصاصی ترمینال کد */
.api-response-code::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
.api-response-code::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
}
.api-response-code::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}
.api-response-code::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.4);
}

/* ===== Spotlight Glow FX برای کارت‌ها ===== */
.project, .skill-card, .about-card, .lang-card {
  position: relative;
}
.project::before, .skill-card::before, .about-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: radial-gradient(
    350px circle at var(--mx, 50%) var(--my, 50%),
    color-mix(in srgb, var(--p1) 22%, transparent),
    transparent 65%
  );
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
  z-index: 1;
}
.project:hover::before, .skill-card:hover::before, .about-card:hover::before {
  opacity: 1;
}

/* ===== دکمه Run Code در هیرو ===== */
.run-code-btn {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: color-mix(in srgb, var(--fg) 10%, transparent);
  border: 1px solid var(--border);
  color: var(--fg);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.3s var(--ease);
}
:root.en .run-code-btn { margin-left: auto; margin-right: 0; }
:root:not(.en) .run-code-btn { margin-right: auto; margin-left: 0; }
.run-code-btn:hover {
  background: var(--p1);
  color: var(--bg);
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(255, 255, 255, 0.2);
}
.code-output-container {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--border);
  font-family: monospace;
  font-size: 0.78rem;
  color: #10b981;
}

/* ===== فیلتر پروژه‌ها ===== */
.project-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}
.filter-btn {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 8px 18px;
  border-radius: 30px;
  font-size: 0.86rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s var(--ease);
}
.filter-btn:hover, .filter-btn.active {
  color: var(--fg);
  border-color: var(--fg);
  background: color-mix(in srgb, var(--fg) 14%, transparent);
  transform: translateY(-2px);
}

/* ===== دکمه Command Palette در ناوبری ===== */
.cmd-trigger {
  background: var(--card);
  border: 1px solid var(--border);
  height: 42px;
  padding: 0 12px;
  border-radius: 40px;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  color: var(--fg);
  transition: all 0.3s var(--ease);
}
.cmd-trigger:hover {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
  transform: translateY(-2px);
}
.cmd-kbd {
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--fg) 15%, transparent);
}

/* ===== استایل macOS Terminal Modal (Ctrl+K) ===== */
.cmd-modal {
  align-items: flex-start;
  padding-top: 8vh;
}
.mac-terminal {
  width: 100%;
  max-width: 640px;
  background: rgba(13, 17, 23, 0.92) !important;
  backdrop-filter: blur(25px) saturate(180%);
  -webkit-backdrop-filter: blur(25px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.15) !important;
  border-radius: 14px !important;
  overflow: hidden;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(0, 0, 0, 0.5);
  font-family: "Space Mono", "Fira Code", Consolas, Monaco, monospace;
}
.mac-term-header {
  background: rgba(255, 255, 255, 0.06);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.mac-dots {
  display: flex;
  align-items: center;
  gap: 8px;
}
.mac-dots .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  cursor: pointer;
  display: inline-block;
}
.mac-dots .dot.red { background: #ff5f56; border: 1px solid #e0443e; }
.mac-dots .dot.yellow { background: #ffbd2e; border: 1px solid #dea123; }
.mac-dots .dot.green { background: #27c93f; border: 1px solid #1aab29; }
.mac-term-title {
  font-size: 0.78rem;
  color: #8b949e;
  font-weight: 600;
  letter-spacing: 0.3px;
}
.mac-term-body {
  padding: 18px 20px;
  color: #c9d1d9;
  font-size: 0.88rem;
  line-height: 1.6;
  direction: ltr !important;
  text-align: left !important;
}
.term-welcome {
  color: #8b949e;
  font-size: 0.8rem;
  margin-bottom: 14px;
}
.term-hl {
  color: #58a6ff;
  font-weight: bold;
}
.term-prompt-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
}
.term-prompt {
  color: #7ef7a0;
  font-weight: bold;
  font-size: 0.88rem;
  white-space: nowrap;
}
.term-prompt span {
  color: #38bdf8;
}
.term-path {
  color: #f472b6 !important;
}
#cmdInput {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #f3f4f6;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  direction: ltr !important;
  text-align: left !important;
}
.cmd-output {
  max-height: 240px;
  overflow-y: auto;
  margin-bottom: 10px;
  font-family: inherit;
  font-size: 0.85rem;
  color: #34d399;
  display: none;
  padding: 8px 12px;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.05);
}
.cmd-output.active {
  display: block;
}
.cmd-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.cmd-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  cursor: pointer;
  transition: all 0.2s var(--ease);
}
.cmd-item:hover {
  background: rgba(56, 189, 248, 0.15);
  border-color: #38bdf8;
  transform: translateY(-1px);
}
.cmd-item span {
  font-family: inherit;
  font-weight: 700;
  color: #38bdf8;
  font-size: 0.8rem;
}
.cmd-item small {
  color: #9ca3af;
  font-size: 0.75rem;
}

/* ===== Toast Notification برای کپی ===== */
.toast-notification {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  z-index: 999999;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 12px 24px;
  border-radius: 40px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
  opacity: 0;
  pointer-events: none;
  transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.toast-notification.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.toast-notification svg {
  color: #10b981;
}

.copy-btn {
  position: relative;
  cursor: pointer;
}
.copy-ico {
  margin-right: 6px;
  opacity: 0.7;
  transition: opacity 0.3s;
}
:root.en .copy-ico {
  margin-right: 0;
  margin-left: 6px;
}
.copy-btn:hover .copy-ico {
  opacity: 1;
}
  cursor: pointer;
  transition: transform 0.2s;
}
.modal-header .dot:hover {
  transform: scale(1.2);
}
.modal-header .dot.red { background: #ff5f56; }
.modal-header .dot.yellow { background: #ffbd2e; }
.modal-header .dot.green { background: #27c93f; }
.modal-header .modal-title {
  margin-inline-start: 12px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--muted);
}

.modal-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
.modal-body h4 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--fg);
}
.modal-body p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.local-path-box {
  width: 100%;
  padding: 14px 16px;
  border-radius: 16px;
  background: color-mix(in srgb, var(--fg) 5%, transparent);
  border: 1px solid var(--border);
  margin-top: 14px;
  text-align: left;
  direction: ltr;
}
.path-label {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 6px;
}
:root:not(.en) .path-label {
  text-align: right;
}
.path-code {
  font-family: Consolas, Monaco, monospace;
  font-size: 0.88rem;
  color: #38bdf8;
  word-break: break-all;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
}
.modal-footer .btn {
  margin-top: 0;
  padding: 10px 24px;
  font-size: 0.9rem;
}

/* ===== اسکرول سه‌بعدی مدرن (Scroll-driven 3D) ===== */
@media (min-width: 1025px) and (prefers-reduced-motion: no-preference){
  @supports (animation-timeline: view()){

    /* هر بخش با انیمیشن ورود ورودی */
    .scene > .section:not(.showcase):not(.contact):not(#projects){
      animation:section-3d linear both;
      animation-timeline:view();
      animation-range:entry 0% cover 35%;
      will-change:transform,opacity,filter;
    }
    @keyframes section-3d{
      from{ opacity:0; transform:translateY(60px); filter:blur(6px); }
      to{ opacity:1; transform:translateY(0); filter:blur(0); }
    }

    .skill-card,.tl-item,.about-card,.about-side,.lang-card{
      animation:card-3d linear both;
      animation-timeline:view();
      animation-range:entry 0% entry 40%;
      transform-origin:center bottom;
      will-change:transform,opacity;
    }
    @keyframes card-3d{
      from{opacity:0;transform:translateY(40px) scale(.96)}
      to{opacity:1;transform:translateY(0) scale(1)}
    }

    .showcase .stack-stage{
      animation:showcase-3d linear both;
      animation-timeline:view();
      animation-range:entry 0% cover 40%;
      will-change:transform,opacity,filter;
    }
    @keyframes showcase-3d{
      from{opacity:0;transform:translateY(60px);filter:blur(6px)}
      to{opacity:1;transform:translateY(0);filter:blur(0)}
    }

    .section-head{
      animation:head-3d linear both;
      animation-timeline:view();
      animation-range:entry 0% cover 30%;
    }
    @keyframes head-3d{
      from{opacity:0;transform:translateY(30px)}
      to{opacity:1;transform:translateY(0)}
    }

    .hero-container{
      animation:hero-depth linear both;
      animation-timeline:view(block);
      animation-range:exit 0% exit 100%;
    }
    @keyframes hero-depth{
      to{opacity:.08}
    }

    .tl-item{
      animation:tl-3d linear both;
      animation-timeline:view();
      animation-range:entry 0% entry 55%;
    }
    @keyframes tl-3d{
      from{opacity:0;transform:translateY(30px)}
      to{opacity:1;transform:translateY(0)}
    }
  }
}