/* ضایعات طالب — استایل مشترک همه صفحات */
/* ============================================================
   ضایعات طالب — Design tokens
   Palette: trust blue (#1D4ED8) + action orange (#C2410C / #EA580C)
   All text/background pairs verified at WCAG AA (4.5:1+)
   ============================================================ */
:root{
  --navy-950:#071426;
  --navy-900:#0B1F3A;
  --navy-800:#12294A;
  --blue-700:#1E40AF;
  --blue-600:#1D4ED8;
  --blue-500:#2563EB;
  --blue-100:#DBE7FE;
  --blue-50:#EFF5FF;
  --orange-700:#C2410C;   /* CTA background — 5.1:1 with white */
  --orange-600:#EA580C;
  --orange-400:#FB923C;   /* accents on dark only */
  --orange-50:#FFF4ED;

  --ink:#0F172A;
  --muted:#475569;        /* 7.4:1 on white */
  --line:#E2E8F0;
  --line-soft:#EEF2F7;
  --bg:#F6F8FC;
  --card:#FFFFFF;

  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --radius-pill:999px;

  --shadow-xs:0 1px 2px rgba(15,23,42,.06);
  --shadow-sm:0 2px 8px rgba(15,23,42,.06);
  --shadow-md:0 8px 24px rgba(15,23,42,.08);
  --shadow-lg:0 20px 48px rgba(11,31,58,.14);

  --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px;
  --space-5:24px; --space-6:32px; --space-7:48px; --space-8:64px; --space-9:96px;

  --container:1180px;
  --header-h:72px;
  --font:'Vazirmatn','IRANSansX','IRANSans','Segoe UI',Tahoma,system-ui,sans-serif;

  color-scheme:light;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px)}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.45;font-weight:800;letter-spacing:-.01em;text-wrap:balance}
p{margin:0}
ul{margin:0;padding:0;list-style:none}

:focus-visible{outline:3px solid var(--orange-600);outline-offset:3px;border-radius:6px}

.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:20px}
.skip-link{
  position:absolute;inset-inline-start:-9999px;top:8px;z-index:200;
  background:var(--navy-900);color:#fff;padding:12px 20px;border-radius:var(--radius-sm);font-weight:700;
}
.skip-link:focus{inset-inline-start:16px}
.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;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:52px;padding:0 26px;border-radius:var(--radius-pill);
  font-weight:700;font-size:1.0625rem;border:2px solid transparent;cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, background-color .18s ease, border-color .18s ease, color .18s ease;
  white-space:nowrap;
}
.btn svg{width:20px;height:20px;flex:none}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--primary{background:var(--orange-700);color:#fff;box-shadow:0 10px 24px rgba(194,65,12,.32)}
.btn--primary:hover{background:#A93409;box-shadow:0 14px 30px rgba(194,65,12,.4)}
.btn--wa{background:#128C7E;color:#fff;box-shadow:0 10px 24px rgba(18,140,126,.3)}
.btn--wa:hover{background:#0E7268}
.btn--ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.34)}
.btn--ghost:hover{background:rgba(255,255,255,.16);border-color:#fff}
.btn--outline{background:#fff;color:var(--blue-700);border-color:var(--blue-100)}
.btn--outline:hover{border-color:var(--blue-600);background:var(--blue-50)}
.btn--sm{min-height:44px;padding:0 18px;font-size:.9375rem}
.btn--block{width:100%}

/* ---------- Top bar ---------- */
.topbar{background:var(--navy-950);color:#C9D8EE;font-size:.875rem}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:40px}
.topbar__list{display:flex;align-items:center;gap:22px;flex-wrap:nowrap;min-width:0}
.topbar__list li{display:flex;align-items:center;gap:7px;white-space:nowrap}
.topbar__short{display:none}
.topbar__list svg{width:16px;height:16px;color:var(--orange-400);flex:none}
.topbar__social{display:flex;gap:6px}
.topbar__social a{
  display:grid;place-items:center;width:32px;height:32px;border-radius:9px;
  background:rgba(255,255,255,.07);transition:background-color .2s ease;
}
.topbar__social a:hover{background:rgba(255,255,255,.18)}
.topbar__social svg{width:16px;height:16px}
/* روی موبایل نوار بالا همیشه تک‌خطی و فشرده می‌ماند */
@media (max-width:900px){
  .topbar{font-size:.8125rem}
  .topbar__inner{justify-content:center;min-height:36px}
  .topbar__hide-sm,
  .topbar__list li.topbar__hide-sm{display:none}
  .topbar__full{display:none}
  .topbar__short{display:inline}
}

/* ---------- Header ---------- */
.header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);transition:box-shadow .25s ease;
}
.header.is-stuck{box-shadow:0 6px 24px rgba(15,23,42,.09)}
.header__inner{display:flex;align-items:center;gap:20px;min-height:var(--header-h)}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand__mark{width:42px;height:42px;flex:none}
.brand__name{font-size:1.1875rem;font-weight:800;line-height:1.3;color:var(--navy-900)}
.brand__tag{display:block;font-size:.75rem;font-weight:500;color:var(--muted);line-height:1.4}

.nav{margin-inline-start:auto;min-width:0}
.nav__list{display:flex;align-items:center;gap:2px;flex-wrap:nowrap}
.nav__list a,.nav__more-btn{
  display:flex;align-items:center;gap:6px;padding:10px 13px;border-radius:var(--radius-sm);
  font-size:.9375rem;font-weight:600;color:#243B57;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease;
}
.nav__list a:hover,.nav__more-btn:hover{background:var(--blue-50);color:var(--blue-700)}
.nav__list a[aria-current="page"]{background:var(--blue-50);color:var(--blue-700)}

/* زیرمنوی «بیشتر» */
.nav__more{position:relative}
.nav__more-btn{background:none;border:0;cursor:pointer;font-family:inherit}
.nav__chev{width:15px;height:15px;flex:none;opacity:.7;transition:transform .2s ease}
.nav__more-btn[aria-expanded="true"]{background:var(--blue-50);color:var(--blue-700)}
.nav__more-btn[aria-expanded="true"] .nav__chev{transform:rotate(180deg)}
.nav__submenu{
  position:absolute;top:calc(100% + 8px);inset-inline-start:0;z-index:20;min-width:210px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-md);padding:6px;display:none;
}
.nav__more-btn[aria-expanded="true"] + .nav__submenu{display:block}
.nav__submenu a{border-radius:10px}
.header__cta{display:flex;align-items:center;gap:10px;flex:none}
.header__phone{
  display:inline-flex;align-items:center;gap:9px;padding:8px 16px;min-height:46px;
  border-radius:var(--radius-pill);background:var(--blue-50);color:var(--blue-700);
  font-weight:800;border:1.5px solid var(--blue-100);transition:.2s ease;
}
.header__phone:hover{background:var(--blue-100);border-color:var(--blue-500)}
.header__phone svg{width:18px;height:18px}
.header__phone span{direction:ltr;unicode-bidi:isolate}

.burger{
  display:none;width:46px;height:46px;border:1.5px solid var(--line);border-radius:12px;
  background:#fff;cursor:pointer;place-items:center;
}
.burger svg{width:22px;height:22px}
.burger .icon-close{display:none}
.burger[aria-expanded="true"] .icon-open{display:none}
.burger[aria-expanded="true"] .icon-close{display:block}

@media (max-width:1000px){
  .nav{
    position:absolute;top:100%;inset-inline:0;background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-md);padding:10px 20px 20px;display:none;
    max-height:calc(100dvh - var(--header-h) - 20px);overflow-y:auto;overscroll-behavior:contain;
  }
  .nav.is-open{display:block}
  .nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .nav__list a{padding:14px 12px;font-size:1rem;border-bottom:1px solid var(--line-soft)}
  /* داخل کشوی موبایل، «بیشتر» باز می‌شود و همهٔ لینک‌ها صاف نمایش داده می‌شوند */
  .nav__more-btn{display:none}
  .nav__submenu{
    position:static;display:block;min-width:0;padding:0;
    background:none;border:0;border-radius:0;box-shadow:none;
  }
  .nav__submenu a{border-radius:var(--radius-sm)}
  /* لوگو سمت راست می‌ماند و آیکن منو به لبهٔ چپ می‌چسبد */
  .header__cta{margin-inline-start:auto}
  .burger{display:grid}
  .header__cta .header__phone{display:none}
}
@media (max-width:520px){.brand__tag{display:none}.brand__name{font-size:1.0625rem}}


/* ---------- Section shell ---------- */
.section{padding-block:var(--space-9)}
.section--tight{padding-block:var(--space-8)}
.section--alt{background:#fff}
.section__head{max-width:66ch;margin-inline:auto;text-align:center;margin-bottom:var(--space-7)}
.section__head--start{text-align:start;margin-inline:0}
.kicker{
  display:inline-block;font-size:.875rem;font-weight:700;color:var(--blue-600);
  background:var(--blue-50);border-radius:var(--radius-pill);padding:6px 15px;margin-bottom:14px;
}
.section__head h2{font-size:clamp(1.5rem,3.2vw,2.25rem);margin-bottom:14px}
.section__head p{color:var(--muted);font-size:1.0625rem}
@media (max-width:640px){.section{padding-block:var(--space-8)}}

/* ---------- Filter tabs (پرکاربرد در صفحهٔ اصلی و وبلاگ) ---------- */
.tabs{display:flex;justify-content:center;flex-wrap:wrap;gap:9px;margin-bottom:34px}
.tab{
  min-height:46px;padding:0 20px;border-radius:var(--radius-pill);border:1.5px solid var(--line);
  background:#fff;color:#243B57;font-weight:700;font-size:.9375rem;cursor:pointer;
  transition:.2s ease;display:inline-flex;align-items:center;gap:8px;
}
.tab:hover{border-color:var(--blue-500);color:var(--blue-700)}
.tab[aria-selected="true"]{background:var(--navy-900);border-color:var(--navy-900);color:#fff}
.tab .count{
  font-size:.75rem;font-weight:700;background:var(--blue-50);color:var(--blue-700);
  border-radius:var(--radius-pill);padding:2px 8px;
}
.tab[aria-selected="true"] .count{background:rgba(255,255,255,.18);color:#fff}

/* ---------- Feature cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media (max-width:960px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.grid-3{grid-template-columns:1fr}}

.feature{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--blue-100)}
.feature__ico{
  display:grid;place-items:center;width:54px;height:54px;border-radius:15px;
  background:linear-gradient(140deg,var(--blue-50),#fff);border:1px solid var(--blue-100);
  color:var(--blue-600);margin-bottom:18px;
}
.feature__ico svg{width:27px;height:27px}
.feature h3{font-size:1.1875rem;margin-bottom:9px}
.feature p{color:var(--muted);font-size:.9688rem}


/* ---------- CTA band ---------- */
.cta{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);color:#fff;padding:52px 44px;
  background:
    radial-gradient(700px 340px at 90% 0%, rgba(234,88,12,.34), transparent 62%),
    linear-gradient(140deg,var(--blue-700),var(--navy-900));
  display:grid;grid-template-columns:1.35fr auto;gap:32px;align-items:center;
}
.cta h2{font-size:clamp(1.375rem,2.8vw,2rem);margin-bottom:12px}
.cta p{color:#CFDEF5;font-size:1.0312rem;max-width:52ch}
.cta__actions{display:flex;flex-direction:column;gap:12px;min-width:250px}
.cta__actions .num{direction:ltr;unicode-bidi:isolate;font-variant-numeric:tabular-nums}
@media (max-width:860px){
  .cta{grid-template-columns:1fr;padding:36px 24px;text-align:center}
  .cta p{margin-inline:auto}
  .cta__actions{min-width:0}
}


/* ---------- Footer ---------- */
.footer{background:var(--navy-950);color:#B9CBE4;padding-block:var(--space-8) 0;margin-top:var(--space-9)}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:var(--space-7)}
@media (max-width:920px){.footer__grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:560px){.footer__grid{grid-template-columns:1fr}}
.footer h3{color:#fff;font-size:1.0312rem;margin-bottom:16px}
.footer p{font-size:.9375rem;line-height:1.9}
.footer__links li+li{margin-top:9px}
.footer__links a{font-size:.9375rem;transition:color .18s ease;display:inline-block;padding-block:3px}
.footer__links a:hover{color:#fff}
.footer .brand__name{color:#fff}
.footer .brand__tag{color:#8FA8C7}
.footer__social{display:flex;gap:10px;margin-top:18px}
.footer__social a{
  display:grid;place-items:center;width:44px;height:44px;border-radius:13px;
  background:rgba(255,255,255,.08);transition:background-color .2s ease,transform .2s ease;
}
.footer__social a:hover{background:var(--blue-600);transform:translateY(-3px)}
.footer__social svg{width:20px;height:20px;color:#fff}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.1);padding-block:20px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.875rem;color:#8FA8C7;
}
.footer__tel{color:#fff;font-weight:800;direction:ltr;unicode-bidi:isolate}

/* ---------- Sticky mobile bar + back-to-top ---------- */
.mobilebar{
  position:fixed;inset-inline:0;bottom:0;z-index:90;display:none;gap:10px;padding:10px 14px;
  padding-bottom:calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-top:1px solid var(--line);
  box-shadow:0 -6px 22px rgba(15,23,42,.1);
}
.mobilebar .btn{flex:1;min-height:50px;font-size:1rem}
@media (max-width:760px){
  .mobilebar{display:flex}
  body{padding-bottom:78px}
}
.totop{
  position:fixed;inset-inline-end:20px;bottom:20px;z-index:80;width:48px;height:48px;border-radius:50%;
  background:var(--navy-900);color:#fff;border:0;cursor:pointer;display:grid;place-items:center;
  box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s;
}
.totop.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.totop svg{width:22px;height:22px}
@media (max-width:760px){.totop{bottom:88px}}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}