:root{
  --bg: #f5f7fb;
  --card: #ffffff;
  --muted: #6b7280;
  --text: #0f172a;
  --accent: #2563eb; /* primary */
  --accent-2: #06b6d4;
  --radius: 12px;
  --shadow: 0 6px 18px rgba(15,23,42,0.06);
  --glass: rgba(255,255,255,0.6);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", "Helvetica Neue", Arial;
  background: linear-gradient(180deg, var(--bg), #eef2f7 60%);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.45;
  padding:32px;
}

/* page layout */
.page{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:calc(100vh - 64px);
}

/* card */
.card{
  width:100%;
  max-width:880px;
  background:var(--card);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:28px;
  border: 1px solid rgba(15,23,42,0.04);
}

/* header */
.page-title{
  margin:0 0 18px 0;
  font-size:1.35rem;
  letter-spacing:-0.2px;
  color:var(--text);
}

/* form */
.form{
  display:grid;
  gap:14px;
}

/* 라벨/입력 정렬 */
.form-row{
  display:flex;
  flex-direction:column;
  gap:8px;
}

.form-row label{
  font-size:0.85rem;
  color:var(--muted);
  font-weight:600;
  letter-spacing:0.2px;
}

/* inputs */
input[type="text"],
input[type="password"],
textarea{
  width:100%;
  padding:12px 14px;
  border-radius:10px;
  border:1px solid rgba(15,23,42,0.08);
  background: linear-gradient(180deg, rgba(255,255,255,0.85), rgba(250,250,251,0.95));
  font-size:1rem;
  color:var(--text);
  outline:none;
  transition:box-shadow .18s ease, border-color .14s ease, transform .12s ease;
  resize:vertical;
  min-height:44px;
}

/* textarea 조금 더 넉넉하게 */
textarea{ min-height:140px; padding-top:12px; }

/* 포커스 스타일 */
input:focus, textarea:focus{
  border-color: rgba(37,99,235,0.9);
  box-shadow: 0 6px 20px rgba(37,99,235,0.08);
  transform:translateY(-1px);
}

/* 버튼 그룹 */
.form-actions{
  display:flex;
  gap:12px;
  justify-content:flex-end;
  margin-top:6px;
}

/* 버튼 공통 */
.btn{
  padding:10px 16px;
  border-radius:10px;
  border: none;
  font-weight:600;
  cursor:pointer;
  font-size:0.95rem;
  transition: transform .12s ease, box-shadow .12s ease, opacity .12s;
}

/* primary */
.btn-primary{
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color:white;
  box-shadow: 0 6px 18px rgba(37,99,235,0.14);
}

.btn-primary:hover{ transform: translateY(-3px); }

/* ghost */
.btn-ghost{
  background:transparent;
  color:var(--muted);
  border:1px solid rgba(15,23,42,0.06);
}

.btn-ghost:hover{ background: rgba(15,23,42,0.03); }

/* 반응형: 작은 화면에서 카드 여백 줄이기 */
@media (max-width:640px){
  body{ padding:18px; }
  .card{ padding:18px; border-radius:10px; }
  .page-title{ font-size:1.15rem; }
  .form-actions{ flex-direction:column-reverse; align-items:stretch; }
  .btn{ width:100%; }
}