:root{
  --ink:#0d2540; --ink2:#15395f; --line:#d6dde6; --paper:#f6f8fb; --text:#16222f; --muted:#5d6b7b;
  --teal:#1aa394; --danger:#b3261e; --ok:#1c7a4a;
  --font:"Vazirmatn","IRANSans","Segoe UI",Tahoma,"Noto Naskh Arabic",sans-serif;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--paper);line-height:1.7;font-size:15px}

/* ---- صفحهٔ ورود ---- */
.shell{min-height:100%;display:grid;grid-template-columns:minmax(380px,520px) 1fr}
.form-side{display:flex;flex-direction:column;justify-content:center;padding:48px clamp(24px,6vw,72px);background:#fff}
.brand{font-size:13px;color:var(--muted);margin:0 0 28px}
.brand b{display:block;color:var(--ink);font-size:17px;font-weight:700;margin-bottom:2px}
h1{margin:0 0 6px;font-size:28px;color:var(--ink);font-weight:800;letter-spacing:-.2px}
.lead{margin:0 0 28px;color:var(--muted)}
.field{margin-bottom:16px}
.field label{display:block;margin-bottom:6px;font-weight:600;font-size:14px}
.input-wrap{position:relative}
input[type=text],input[type=password],input[type=email],select{
  width:100%;height:46px;padding:0 14px;border:1.5px solid var(--line);border-radius:10px;background:#fff;
  font:inherit;color:var(--text);transition:border-color .15s,box-shadow .15s}
input:focus,select:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 4px rgba(26,163,148,.16)}
input.ltr{direction:ltr;text-align:left}
input.code{letter-spacing:8px;text-align:center;font-size:20px;direction:ltr}
.toggle{position:absolute;inset-inline-start:8px;top:7px;height:32px;padding:0 10px;border:0;border-radius:8px;background:transparent;color:var(--muted);font:inherit;font-size:13px;cursor:pointer}
.toggle:hover{background:var(--paper);color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 22px;border:0;border-radius:10px;background:var(--ink);color:#fff;font:inherit;font-weight:700;cursor:pointer;transition:background .15s}
.btn:hover{background:var(--ink2)}
.btn:disabled{opacity:.6;cursor:wait}
.btn.block{width:100%}
.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn.ghost:hover{background:var(--paper)}
.btn.sm{height:36px;padding:0 14px;font-size:13px}
.msg{min-height:24px;margin:2px 0 14px;font-size:14px;color:var(--danger)}
.msg.ok{color:var(--ok)}
.hint{font-size:12.5px;color:var(--muted);margin-top:6px}
.warn-caps{display:none;color:#8a5a00;font-size:12.5px;margin-top:6px}
.fine{margin-top:26px;padding-top:16px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted)}

/* پنل تزئینی آبی + کادر سه‌بعدی تصاویر */
.art{position:relative;overflow:hidden;background-color:var(--ink);color:#e8f1f8;display:flex;align-items:center;justify-content:center;padding:28px 24px;min-height:100%}
.art::before{content:"";position:absolute;inset:0;
  background:
   repeating-linear-gradient(45deg,transparent 0 46px,rgba(46,196,182,.16) 46px 47px),
   repeating-linear-gradient(-45deg,transparent 0 46px,rgba(46,196,182,.16) 46px 47px),
   repeating-linear-gradient(45deg,transparent 0 23px,rgba(255,255,255,.05) 23px 24px),
   radial-gradient(circle at 18% 12%,rgba(26,163,148,.35),transparent 55%)}

.art-stage{
  position:relative;z-index:1;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;
  width:100%;height:100%;
  max-width:none;
  perspective:1100px;
}

/* کادر سه‌بعدی — اندازه نزدیک به پنل آبی (کادر قرمز) */
.art-frame{
  position:relative;
  width:92%;
  height:calc(100% - 90px);
  min-height:320px;
  max-height:calc(100vh - 160px);
  border-radius:20px;
  transform:rotateY(-5deg) rotateX(3deg);
  transform-style:preserve-3d;
  box-shadow:
    0 28px 56px -12px rgba(0,0,0,.55),
    0 14px 28px -8px rgba(0,0,0,.4),
    6px 6px 0 0 rgba(26,163,148,.22),
    inset 0 0 0 1px rgba(255,255,255,.12);
  background:linear-gradient(145deg,#0a1e35,#15395f);
  overflow:hidden;
  animation:art-float 6s ease-in-out infinite;
}
@keyframes art-float{
  0%,100%{transform:rotateY(-5deg) rotateX(3deg) translateY(0)}
  50%{transform:rotateY(-3deg) rotateX(2deg) translateY(-6px)}
}

.art-slide{
  position:absolute;inset:0;
  width:100%;height:100%;
  object-fit:cover;
  opacity:0;
  transition:opacity 1.1s ease;
  pointer-events:none;
}
.art-slide.is-active{opacity:1}

.art-placeholder{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  text-align:center;padding:24px;
  color:#8aa4bc;font-size:14px;line-height:1.8;
}
.art-placeholder code{
  display:inline-block;direction:ltr;margin:4px 0;
  padding:2px 8px;border-radius:6px;
  background:rgba(255,255,255,.08);color:#c5d8ea;font-size:13px;
}

.art-text{position:relative;max-width:90%;text-align:center;flex-shrink:0}
.art-text h2{margin:0 0 6px;font-size:18px;font-weight:700}
.art-text p{margin:0;color:#b9cde0;font-size:13px}

/* ---- صفحهٔ حساب ---- */
.page{max-width:860px;margin:0 auto;padding:32px 20px 60px}
.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;margin-bottom:18px}
.card h3{margin:0 0 12px;color:var(--ink)}
.row{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:9px 8px;text-align:start;border-bottom:1px solid var(--line)}
th{color:var(--muted);font-weight:600}
code.secret{display:block;direction:ltr;text-align:left;padding:10px 12px;background:var(--paper);border-radius:8px;word-break:break-all;margin:8px 0}
.hidden,[hidden]{display:none!important}

@media (max-width:860px){
  .shell{grid-template-columns:1fr}
  .art{order:-1;min-height:260px;padding:20px 16px 16px}
  .art-frame{
    width:94%;height:auto;min-height:180px;max-height:240px;aspect-ratio:16/10;
    transform:none;animation:none;
    box-shadow:0 12px 28px -8px rgba(0,0,0,.45);
  }
  .art-text h2{font-size:15px}.art-text p{display:none}
  .form-side{padding:32px 22px 48px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .art-frame{transform:none}
}

.ttl{margin:0;font-size:22px}.narrow{max-width:260px}.sub{margin-top:22px}.gap{margin-inline-start:16px}