:root{
  --bg: #f7f7fb;
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;

  --primary: #4f46e5;
  --primary-soft: rgba(79, 70, 229, 0.12);

  --border: rgba(17,24,39,0.08);
  --shadow: 0 10px 30px rgba(17,24,39,0.06);

  --radius: 18px;
  --focus: 0 0 0 4px var(--primary-soft);

  --danger: #b91c1c; /* used only when truly necessary */
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  background: var(--bg);
  color: var(--text);
}

.container{
  max-width: 980px;
  padding: 24px;
  margin: 0 auto;
}

.card{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
}

.header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom: 20px;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color: var(--text);
}

.brand-badge{
  width:36px;height:36px;
  border-radius: 12px;
  background: var(--primary-soft);
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:700;
  color: var(--primary);
}

h1{font-size: 22px; margin:0 0 6px 0}
p{margin:0;color:var(--muted);line-height:1.45}

.grid{
  display:grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media(min-width: 800px){
  .grid.two{
    grid-template-columns: 1fr 1fr;
  }
}

.label{
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 6px;
}

input{
  width:100%;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  outline: none;
  font-size: 14px;
  background: #fff;
}

input:focus{
  box-shadow: var(--focus);
  border-color: rgba(79,70,229,0.35);
}

.btn{
  appearance:none;
  border:0;
  cursor:pointer;
  padding: 12px 14px;
  border-radius: 14px;
  font-weight: 600;
  font-size: 14px;
  background: var(--primary);
  color:#fff;
  width:100%;
}

.btn:focus{ box-shadow: var(--focus); outline:none; }

.link{
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.subtle{
  font-size: 13px;
  color: var(--muted);
}

.notice{
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.35;
}

.error{
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(185,28,28,0.25);
  background: rgba(185,28,28,0.06);
  color: var(--danger);
  font-size: 13px;
}