html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: #f7f9fb;
}

/* 전체 배경 */
.account-background {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: linear-gradient(135deg, #007bff, #e3ffb6);
  background-size: cover;
  background-position: center;
  padding: 2rem;
}

/* 메인 박스 */
.register-login {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 2rem;
  width: 100%;
  max-width: 1100px;
}

/* 카드 공통 */
.register, .login {
  background-color: rgba(255, 255, 255, 0.95);
  border: 2px solid #707981;
  border-radius: 12px;
  padding: 2.2rem 2.5rem;
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

/* 제목 */
.section-title {
  text-align: center;
  font-weight: 800;
  font-size: 1.8rem;
  margin-bottom: .25rem;
  background: linear-gradient(90deg, #5a1ed2, #7430f8, #00b3ff);
  -webkit-background-clip: text;
  color: transparent;
}

.section-subtitle {
  text-align: center;
  color: #6b7680;
  font-size: .95rem;
  margin-bottom: 1rem;
}

/* 입력 */
.form-label {
  margin-top: 12px;
  margin-bottom: 4px;
  font-weight: 500;
  color: #505a63;
}

input.form-control {
  border: 1px solid #ccc;
  border-radius: 6px;
  font-weight: 600;
  transition: box-shadow 0.2s ease, transform 0.1s ease;
}

input.form-control:focus {
  border-color: #7430F8;
  box-shadow: 0 0 0 0.15rem rgba(116, 48, 248, 0.25);
  transform: translateY(-1px);
  outline: none;
}

/* placeholder 색상과 스타일 */
input::placeholder {
  color: rgba(76, 76, 76, 0.3) !important; 
  font-weight: 200;
  transition: color 0.2s ease;
}

/* focus 시 더 연하게 (입력 중에는 흐려짐) */
input:focus::placeholder {
  color: rgba(150, 150, 150, 0.5);
}

/* 실제 입력값이 있을 때 대비되는 스타일 */
input:not(:placeholder-shown) {
  color: #000;
  font-weight: 600;
}



/* 버튼 */
.btn.btn-secondary {
  background-image: linear-gradient(90deg, #6b75ff, #7430F8);
  border: none;
  box-shadow: 0 5px 14px rgba(116,48,248,0.25);
  font-weight: 600;
}

.btn.btn-secondary:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
}

/* Reset/Home 왼쪽 정렬 (세로 배치) */
.aux-actions-vertical {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: .4rem;
  margin-top: 1.2rem;
}

.btn-link-like {
  background: transparent;
  border: none;
  color: #707981;
  text-decoration: underline;
  font-size: .95rem;
  cursor: pointer;
  padding: 0;
  transition: color .15s ease, transform .1s ease;
}

.btn-link-like:hover {
  color: #7430F8;
  text-decoration: none;
  transform: translateY(-1px);
}

/* 반응형 */
@media (max-width: 768px) {
  .register, .login { padding: 1.7rem; }
  .section-title { font-size: 1.6rem; }
  .aux-actions-vertical { align-items: center; }
}