*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#f0f2f5;
  --surface:#fff;
  --surface2:#f7f8fa;
  --border:#e2e5ea;
  --border2:#d0d4db;
  --accent:#1a56db;
  --accent-lt:#eff4ff;
  --green:#059669;
  --green-lt:#ecfdf5;
  --red:#dc2626;
  --red-lt:#fef2f2;
  --warn:#d97706;
  --warn-lt:#fffbeb;
  --text:#111827;
  --text2:#374151;
  --text3:#6b7280;
  --text4:#9ca3af;
  --sans:'Barlow',sans-serif;
  --cond:'Barlow Condensed',sans-serif;
  --mono:'JetBrains Mono',monospace;
  --r:6px;
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:14px;
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:1.5rem;
}

/* ── Card ── */
.card{
  width:100%;
  max-width:420px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:10px;
  overflow:hidden;
  box-shadow:0 4px 20px rgba(0,0,0,.07);
  animation:slideUp .4s ease both;
}
@keyframes slideUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}

/* ── Header ── */
.card-head{
  background:#111827;
  padding:1.5rem 1.75rem;
  position:relative;
}
.card-head::after{
  content:'';
  position:absolute;
  bottom:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--accent),transparent);
}
.back-link{
  display:inline-flex;align-items:center;gap:.4rem;
  font-family:var(--mono);font-size:.7rem;color:#9ca3af;
  text-decoration:none;margin-bottom:.85rem;
  transition:color .15s;
}
.back-link:hover{color:#e5e7eb}
.card-head h1{
  font-family:var(--cond);font-size:1.5rem;font-weight:800;
  color:#fff;letter-spacing:.04em;text-transform:uppercase;
}
.card-head p{
  font-family:var(--mono);font-size:.72rem;color:#6b7280;
  margin-top:.3rem;
}

/* ── Steps indicator ── */
.steps{
  display:flex;align-items:center;gap:0;
  padding:.85rem 1.75rem;
  background:var(--surface2);
  border-bottom:1px solid var(--border);
}
.step{
  display:flex;align-items:center;gap:.45rem;
  flex:1;font-family:var(--mono);font-size:.68rem;
  color:var(--text4);transition:color .3s;
}
.step.active{color:var(--accent);font-weight:500}
.step.done{color:var(--green);font-weight:500}
.step-num{
  width:22px;height:22px;border-radius:50%;
  background:var(--border);color:var(--text4);
  display:flex;align-items:center;justify-content:center;
  font-size:.65rem;font-weight:700;flex-shrink:0;
  transition:all .3s;
}
.step.active .step-num{background:var(--accent);color:#fff}
.step.done .step-num{background:var(--green);color:#fff}
.step-div{width:20px;height:1px;background:var(--border);flex-shrink:0;margin:0 .25rem}

/* ── Body ── */
.card-body{padding:1.5rem 1.75rem}

/* ── Notice ── */
.notice{
  display:flex;align-items:flex-start;gap:.6rem;
  background:var(--warn-lt);border:1px solid rgba(217,119,6,.2);
  border-radius:var(--r);padding:.75rem 1rem;
  margin-bottom:1.25rem;
  font-size:.78rem;color:var(--warn);
  font-family:var(--mono);line-height:1.5;
}
.notice svg{flex-shrink:0;margin-top:.05rem}

/* ── Fields ── */
.field{margin-bottom:1.1rem}
.field label{
  display:block;font-family:var(--mono);font-size:.68rem;
  text-transform:uppercase;letter-spacing:.12em;color:var(--text3);
  margin-bottom:.4rem;
}
.field input{
  width:100%;background:var(--surface2);border:1px solid var(--border2);
  border-radius:var(--r);color:var(--text);font-family:var(--mono);
  font-size:16px;padding:.65rem .9rem;outline:none;
  transition:border-color .18s,box-shadow .18s;
  -webkit-appearance:none;
}
@media(min-width:600px){.field input{font-size:.85rem}}
.field input:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(26,86,219,.1);
  background:#fff;
}

/* ── Button ── */
.btn{
  width:100%;padding:.78rem;border:none;border-radius:var(--r);
  font-family:var(--cond);font-size:.95rem;font-weight:700;
  letter-spacing:.06em;text-transform:uppercase;cursor:pointer;
  transition:all .18s;display:flex;align-items:center;
  justify-content:center;gap:.5rem;
}
.btn:active{transform:scale(.98)}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover:not(:disabled){background:#1447cc;box-shadow:0 4px 14px rgba(26,86,219,.3)}
.btn-ghost{
  background:transparent;color:var(--text3);
  border:1px solid var(--border2);margin-top:.6rem;font-size:.82rem;
}
.btn-ghost:hover{background:var(--surface2)}

/* ── Messages ── */
.msg{
  font-family:var(--mono);font-size:.74rem;border-radius:var(--r);
  padding:.6rem .85rem;margin-bottom:1rem;
  display:flex;align-items:flex-start;gap:.5rem;line-height:1.5;
}
.msg svg{flex-shrink:0;margin-top:.05rem}
.msg-err{background:var(--red-lt);color:var(--red);border:1px solid #fecaca;display:none}
.msg-ok {background:var(--green-lt);color:var(--green);border:1px solid #a7f3d0;display:none}
.msg.show{display:flex}

/* ── Success card ── */
.success-box{
  text-align:center;padding:1.5rem 0;display:none;
}
.success-box.show{display:block}
.success-icon{
  width:64px;height:64px;background:var(--green-lt);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 1rem;border:2px solid #a7f3d0;
}
.success-box h3{
  font-family:var(--cond);font-size:1.2rem;font-weight:700;
  color:var(--text);text-transform:uppercase;letter-spacing:.04em;
  margin-bottom:.5rem;
}
.success-box p{
  font-size:.82rem;color:var(--text3);line-height:1.7;
  font-family:var(--mono);
}
.success-box p strong{color:var(--text)}

/* Spinner */
.spinner{
  width:16px;height:16px;border:2px solid rgba(255,255,255,.35);
  border-top-color:#fff;border-radius:50%;
  animation:spin .6s linear infinite;display:none;
}
.btn.loading .spinner{display:block}
.btn.loading .btn-txt{display:none}
@keyframes spin{to{transform:rotate(360deg)}}