:root{
  --bg:#f7f7f8; --fg:#111; --muted:#6b7280;
  --card:#ffffff; --border:#e5e7eb;
  --accent:#111; --accent-hover:#1f2937;
  --danger:#ef4444; --ok:#10b981;
  --radius:20px;
  --shadow:0 8px 30px rgba(0,0,0,.08);
}

*{box-sizing:border-box}

html, body{height:100%; margin:0}

body{
  background:var(--bg); color:var(--fg);
  font-family:"Inter",system-ui,-apple-system,Segoe UI,Roboto,Arial,"Noto Sans Thai",sans-serif;
  display:flex; justify-content:center; align-items:flex-start;  /* ✅ ไม่เอากลางแนวตั้ง */
  min-height:100svh; -webkit-text-size-adjust:100%;
}

.wrapper{
  width:100%; padding:16px;
  margin-top:60px;  /* ✅ เลื่อนลงนิดหน่อย */
}

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:28px;
  max-width:420px;
  width:min(92vw, 420px);
}

h1{
  font-size:24px; margin:0 0 20px; font-weight:800; text-align:center;
}

label{
  display:block; font-size:14px; font-weight:600; color:var(--muted); margin-bottom:6px;
}

.input{
  width:100%; padding:14px 16px; border:1px solid var(--border);
  border-radius:14px; background:#fff; color:var(--fg); font-size:16px;
  outline:none; transition:border-color .2s, box-shadow .2s; margin-bottom:14px;
}
.input::placeholder{color:#b3b8c2}
.input:focus{border-color:#cbd5e1; box-shadow:0 0 0 3px rgba(17,24,39,.08)}

.btn{
  width:100%; padding:14px 16px; border:none; border-radius:14px;
  background:var(--accent); color:#fff; font-weight:700; font-size:16px;
  cursor:pointer; transition:background .2s, transform .02s;
}
.btn:hover{background:var(--accent-hover)}
.btn:active{transform:translateY(1px)}
.btn:disabled{opacity:.5; cursor:not-allowed}

.links{display:flex; justify-content:space-between; align-items:center; margin-top:16px}
.link{font-size:14px; color:var(--muted); text-decoration:none}
.link:hover{color:var(--accent)}

.msg{margin-top:10px; font-size:14px}
.msg.error{color:var(--danger)}
.msg.success{color:var(--ok)}