*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

body{
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background:#fafafa;
  color:#111;
  font-weight:400;
}

/* ================= AUTH WRAP ================= */

.ad-auth{
  max-width:460px;
  margin:56px auto 28px;
  text-align:center;
  padding:0 16px;
  color:#111;
}

/* ================= ICON ================= */

.ad-icon{
  width:44px;
  height:44px;
  margin:0 auto 14px;
  border-radius:12px;
  border:1px solid #e8e8e8;
  background:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 1px 0 rgba(0,0,0,0.02);
}

.ad-icon i{
  font-size:18px;
  opacity:.85;
}

/* ================= TITLE ================= */

.ad-title{
  font-size:28px;
  font-weight:350;   /* ✅ shop style light */
  letter-spacing:.2px;
  margin-bottom:8px;
}

.ad-sub{
  font-size:13px;
  color:#666;
  margin-bottom:22px;
  font-weight:350;
  line-height:1.6;
}

/* ================= FORM ================= */

.ad-form label{
  display:block;
  text-align:left;
  font-size:12px;
  color:#444;
  margin:14px 0 6px;

  /* ✅ shop style label */
  font-weight:600;
  letter-spacing:1.2px;
  text-transform:uppercase;
}

.ad-input{
  width:100%;
  padding:14px 14px;
  border-radius:10px;
  border:1px solid #e3e3e3;
  background:#fff;
  font-size:14px;
  outline:none;
  box-shadow:inset 0 1px 0 rgba(0,0,0,0.02);
  transition:border-color .15s, box-shadow .15s;

  /* ✅ shop input typography */
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  font-weight:350;
  color:#111;
}

.ad-input::placeholder{
  color:#999;
  font-weight:350;
}

.ad-input:focus{
  border-color:#bfbfbf;
  box-shadow:0 0 0 3px rgba(0,0,0,0.04);
}

/* ================= BUTTON (BLACK – LOGIN STYLE) ================= */

.ad-btn{
  width:100%;
  max-width:420px;
  padding:14px;
  border-radius:8px;
  border:none;
  background:linear-gradient(#111,#1a1a1a);
  color:#fff;

  /* ✅ shop button style */
  font-weight:700;
  font-size:13px;
  letter-spacing:1px;
  text-transform:uppercase;

  cursor:pointer;
  margin-top:22px;
}

.ad-btn:active{
  transform:translateY(1px);
}

/* ================= BACK TO LOGIN ================= */

.ad-back{
  margin-top:18px;
  font-size:13px;
  font-weight:350;
}

.ad-back a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:#111;
  text-decoration:none;
  opacity:.8;
  font-weight:600;
}

.ad-back a:hover{
  opacity:1;
  text-decoration:underline;
  text-underline-offset:3px;
}

/* ================= ERROR ================= */

.ad-error{
  color:#c0392b;
  font-size:12px;
  margin-top:6px;
  margin-bottom:4px;
  text-align:left;
  font-weight:600;
}