/* مساعد سنا — demo & embed site · design tokens */
:root{
  --bg:#FAFAF8; --surface:#FFFFFF; --surface-2:#F4F5FB; --ink:#0A0A0C; --ink-2:#2C2F36;
  --muted:#6E7280; --muted-2:#8A8F98; --line:#E7E7EA; --line-2:#EDEDF2;
  --accent:#5E6AD2; --accent-2:#7C86E8; --accent-soft:rgba(94,106,210,.10);
  --dark:#0A0A0C; --dark-2:#14161C; --success:#178A57; --warn:#C97A16;
  --grad:linear-gradient(135deg,#5E6AD2,#8A93EE);
  --shadow-sm:0 2px 10px rgba(16,18,40,.06);
  --shadow:0 10px 30px rgba(16,18,40,.09);
  --shadow-lg:0 24px 60px rgba(16,18,40,.16);
  --r-sm:10px; --r:16px; --r-lg:22px; --r-xl:28px;
  --container:1140px;
  color-scheme:light;
}
*,*::before,*::after{box-sizing:border-box}
*{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--ink);
  font-family:"Noto Sans Arabic","DM Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
.glow{position:fixed;inset:-30% -20% auto -20%;height:60vh;pointer-events:none;z-index:0;
  background:radial-gradient(ellipse at 50% 0%,rgba(94,106,210,.22),transparent 62%)}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 1.25rem;position:relative;z-index:1}
.section{padding:4.5rem 0 1rem}
img,svg{max-width:100%}
a{color:inherit}
.ic{width:18px;height:18px;stroke-width:1.75;flex:0 0 auto}
.ic-sm{width:15px;height:15px;stroke-width:1.75;flex:0 0 auto}
h1{font-size:clamp(1.9rem,4.4vw,3.1rem);line-height:1.22;font-weight:700;letter-spacing:-.02em}
h2{font-size:clamp(1.35rem,2.8vw,2rem);line-height:1.3;font-weight:700;letter-spacing:-.015em;margin-bottom:.5rem}
h3{font-size:1.02rem;font-weight:700;margin-bottom:.35rem}
h4{font-size:.8rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:.6rem}
p{color:var(--ink-2)}
.sub{color:var(--muted);max-width:70ch}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.86em;background:var(--accent-soft);
  color:var(--accent);padding:.12rem .38rem;border-radius:6px}
.row-between{display:flex;align-items:flex-end;justify-content:space-between;gap:1rem;flex-wrap:wrap}

/* ── utilities ── */
.badge{display:inline-flex;align-items:center;gap:.35rem;font-size:.74rem;font-weight:600;padding:.3rem .7rem;
  border-radius:999px;background:var(--surface-2);color:var(--muted);border:1px solid var(--line)}
.badge-accent{background:var(--accent-soft);color:var(--accent);border-color:rgba(94,106,210,.25)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.45rem;padding:.72rem 1.35rem;border:0;
  border-radius:999px;font-family:inherit;font-size:.92rem;font-weight:600;cursor:pointer;text-decoration:none;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease,color .16s ease}
.btn-sm{padding:.5rem 1rem;font-size:.84rem}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 24px rgba(94,106,210,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(94,106,210,.42)}
.btn-ghost{background:var(--surface);color:var(--ink);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn:focus-visible,.chip:focus-visible,.copy:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:1.35rem;
  box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(94,106,210,.35)}
.card h3{display:flex;align-items:center;gap:.5rem}
.f-ico{width:34px;height:34px;border-radius:11px;background:var(--accent-soft);color:var(--accent);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.grid{display:grid;gap:1.1rem}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(265px,1fr))}
.empty{text-align:center;color:var(--muted);padding:2rem;border:1px dashed var(--line);border-radius:var(--r)}
.ticks{list-style:none;display:flex;flex-direction:column;gap:.5rem;margin:.9rem 0 1.2rem}
.ticks li{display:flex;align-items:flex-start;gap:.5rem;font-size:.9rem;color:var(--ink-2)}
.ticks .ic-sm{color:var(--success);margin-top:.45rem}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .55s ease,transform .55s ease}
.reveal.in{opacity:1;transform:none}

/* ── navbar ── */
.navbar{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:1rem;justify-content:space-between;
  padding:.6rem 1.25rem;background:rgba(250,250,248,.82);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--grad);color:#fff;font-weight:700;font-size:.82rem;
  display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(94,106,210,.35);flex:0 0 auto}
.brand-txt{display:flex;flex-direction:column;line-height:1.25}
.brand-txt strong{font-size:.95rem}
.brand-txt small{font-size:.68rem;color:var(--muted-2);letter-spacing:.02em}
.nav-links{display:flex;gap:1.4rem;flex:1;justify-content:center}
.nav-link{font-size:.88rem;color:var(--muted);text-decoration:none;font-weight:500;position:relative;transition:color .16s ease}
.nav-link:hover{color:var(--ink)}
.nav-link::after{content:"";position:absolute;inset-inline:0;bottom:-6px;height:2px;background:var(--grad);
  border-radius:2px;transform:scaleX(0);transition:transform .2s ease}
.nav-link:hover::after{transform:scaleX(1)}

/* ── hero ── */
.hero{padding:4rem 1.25rem 1.5rem;text-align:center;display:flex;flex-direction:column;align-items:center;gap:1rem}
.hero .badge{margin-bottom:.2rem}
.hero h1{max-width:24ch}
.lead{max-width:66ch;color:var(--muted);font-size:1.03rem}
.hero-cta{display:flex;gap:.7rem;flex-wrap:wrap;justify-content:center;margin-top:.4rem}
.chips-demo{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;margin-top:1.4rem;max-width:760px}
.chip{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:.42rem .9rem;font-size:.83rem;
  font-family:inherit;color:var(--ink-2);cursor:pointer;transition:transform .16s ease,border-color .16s ease,color .16s ease}
.chip:hover{transform:translateY(-2px);border-color:var(--accent);color:var(--accent)}
.hint{font-size:.78rem;color:var(--muted-2)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;margin:2.6rem auto 0}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:1.1rem;text-align:center;
  box-shadow:var(--shadow-sm);transition:transform .2s ease}
.stat:hover{transform:translateY(-3px)}
.stat strong{display:block;font-size:1.9rem;font-weight:700;background:var(--grad);-webkit-background-clip:text;
  background-clip:text;color:transparent;line-height:1.2}
.stat span{font-size:.8rem;color:var(--muted)}

/* ── knowledge-base browser ── */
.kb-toolbar{display:flex;flex-direction:column;gap:.8rem;margin:1.2rem 0 1rem}
.search{display:flex;align-items:center;gap:.6rem;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r);padding:.65rem 1rem;box-shadow:var(--shadow-sm);transition:border-color .16s ease,box-shadow .16s ease}
.search:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px rgba(94,106,210,.14)}
.search .ic{color:var(--muted-2)}
.search input{flex:1;border:0;background:transparent;font-family:inherit;font-size:.95rem;color:var(--ink);outline:none}
.filter-chips{display:flex;flex-wrap:wrap;gap:.45rem}
.fchip{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:.34rem .8rem;font-size:.79rem;
  font-family:inherit;color:var(--muted);cursor:pointer;transition:all .16s ease}
.fchip:hover{color:var(--accent);border-color:rgba(94,106,210,.4)}
.fchip.active{background:var(--accent-soft);border-color:rgba(94,106,210,.45);color:var(--accent);font-weight:600}
.kb-list{display:grid;gap:.7rem}
.kb-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow-sm);
  overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease}
.kb-item[open]{border-color:rgba(94,106,210,.4);box-shadow:var(--shadow)}
.kb-item summary{display:flex;align-items:center;gap:.7rem;padding:.95rem 1.1rem;cursor:pointer;list-style:none;font-weight:600;font-size:.95rem}
.kb-item summary::-webkit-details-marker{display:none}
.kb-item summary .cat{font-size:.68rem;font-weight:600;color:var(--accent);background:var(--accent-soft);
  border-radius:999px;padding:.15rem .55rem;flex:0 0 auto}
.kb-item summary .qtxt{flex:1}
.kb-item summary .chev{color:var(--muted-2);transition:transform .2s ease;flex:0 0 auto}
.kb-item[open] summary .chev{transform:rotate(180deg)}
.kb-body{padding:0 1.1rem 1.1rem;border-top:1px solid var(--line-2)}
.kb-body .ans{margin-top:.85rem;display:flex;flex-direction:column;gap:.45rem;font-size:.92rem;color:var(--ink-2)}
.kb-body .ans li{margin-inline-start:1.1rem}
.kb-body .en{margin-top:.7rem;font-size:.85rem;color:var(--muted);border-inline-start:3px solid var(--line);padding-inline-start:.7rem}
.kb-links{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:.8rem}
.kb-links a{font-size:.76rem;font-weight:600;color:var(--accent);background:var(--accent-soft);border:1px solid rgba(94,106,210,.25);
  border-radius:999px;padding:.22rem .6rem;text-decoration:none;transition:transform .16s ease,background .16s ease}
.kb-links a:hover{transform:translateY(-1px);background:rgba(94,106,210,.18)}
.kw{display:flex;flex-wrap:wrap;gap:.3rem;margin-top:.8rem}
.kw span{font-size:.68rem;color:var(--muted);background:var(--surface-2);border-radius:6px;padding:.1rem .4rem}
.kw .lbl{color:var(--muted-2);background:transparent;padding:0}

/* ── embed block ── */
.embed-wrap{display:grid;grid-template-columns:1fr 1fr;gap:1.6rem;align-items:start}
.embed-code{background:var(--dark);border-radius:var(--r-lg);box-shadow:var(--shadow-lg);overflow:hidden;position:sticky;top:90px}
.code-head{display:flex;align-items:center;gap:.4rem;padding:.7rem .9rem;background:var(--dark-2);border-bottom:1px solid #23252E}
.code-head .dot{width:10px;height:10px;border-radius:50%;background:#3A3D48}
.code-head .dot:nth-child(1){background:#F6685E}.code-head .dot:nth-child(2){background:#F7C948}.code-head .dot:nth-child(3){background:#4ED27F}
.code-head em{margin-inline-start:.5rem;font-style:normal;font-size:.76rem;color:#8A8F98;font-family:ui-monospace,monospace}
.copy{margin-inline-start:auto;display:inline-flex;align-items:center;gap:.35rem;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);color:#E8EAF0;border-radius:999px;padding:.28rem .7rem;font-size:.74rem;
  font-family:inherit;cursor:pointer;transition:background .16s ease,transform .16s ease}
.copy:hover{background:rgba(255,255,255,.18);transform:translateY(-1px)}
pre{max-height:420px;overflow:auto}
pre code{display:block;padding:1.1rem;background:transparent;color:#D7DBE6;font-size:.8rem;line-height:1.85;
  white-space:pre-wrap;word-break:break-word;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
pre code .c{color:#7C86E8}
pre code .t{color:#9BE2B4}
pre code .a{color:#F7C948}
.opts{margin-top:1rem;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--surface)}
.opts table{width:100%;border-collapse:collapse;font-size:.83rem}
.opts th,.opts td{padding:.55rem .8rem;text-align:start;border-bottom:1px solid var(--line-2)}
.opts th{background:var(--surface-2);font-size:.74rem;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.opts tr:last-child td{border-bottom:0}
.opts td:first-child{font-family:ui-monospace,monospace;color:var(--accent);white-space:nowrap}

/* ── steps ── */
.step{position:relative;padding-top:1.6rem}
.step-n{position:absolute;top:-.9rem;inset-inline-start:1.1rem;background:var(--grad);color:#fff;font-size:.72rem;
  font-weight:700;border-radius:999px;padding:.2rem .65rem;box-shadow:0 6px 16px rgba(94,106,210,.3)}

/* ── footer + toast ── */
.footer{margin-top:4rem;background:var(--dark);color:#E8EAF0;padding:3rem 0 1.5rem;position:relative;z-index:1}
.footer .brand-txt small{color:#8A8F98}
.footer .brand-mark{box-shadow:none}
.footer-in{display:grid;grid-template-columns:1fr 1.2fr;gap:2rem;align-items:start}
.foot-note{font-size:.83rem;color:#9AA0AC;max-width:44ch;margin-top:.9rem}
.foot-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
.foot-cols a{display:block;font-size:.85rem;color:#C3C7D1;text-decoration:none;padding:.18rem 0;transition:color .16s ease}
.foot-cols a:hover{color:#fff}
.foot-plain{display:block;font-size:.78rem;color:#787E8B;padding:.18rem 0}
.foot-bottom{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-top:2.2rem;padding-top:1.2rem;
  border-top:1px solid #23252E;font-size:.76rem;color:#787E8B}
.toast-wrap{position:fixed;bottom:1.4rem;inset-inline-start:1.4rem;z-index:60;display:flex;flex-direction:column;gap:.5rem}
.toast{background:var(--dark);color:#fff;border-radius:12px;padding:.65rem 1rem;font-size:.84rem;box-shadow:var(--shadow-lg);
  animation:toastIn .3s ease;display:flex;align-items:center;gap:.45rem}
.toast.ok{border-inline-start:3px solid var(--success)}
@keyframes toastIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.skeleton{background:linear-gradient(90deg,var(--surface-2) 25%,#EDEDF2 50%,var(--surface-2) 75%);background-size:200%;
  animation:shimmer 1.4s infinite;border-radius:var(--r);height:62px}
@keyframes shimmer{from{background-position:200% 0}to{background-position:-200% 0}}

/* ── responsive ── */
@media (max-width:900px){
  .nav-links{display:none}
  .embed-wrap{grid-template-columns:1fr}
  .embed-code{position:static}
  .footer-in{grid-template-columns:1fr}
  .foot-cols{grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}
}
@media (max-width:560px){
  .hero{padding:2.6rem 1rem 1rem}
  .section{padding:3rem 0 .5rem}
  .navbar{padding:.55rem .9rem}
  .btn-sm span{display:none}
  .toast-wrap{inset-inline:1rem}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}