/* ==============================================
   撑伞人 — 登录 / 注册
   ============================================== */

.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #f5f0ea 0%, #e8e0d8 30%, #dce8f2 70%, #c8d8e8 100%);
  padding: 24px;
}
.auth-card {
  width: 100%;
  max-width: 420px;
  padding: 24px 20px 20px;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.72);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(57,100,150,0.08);
  box-shadow: 0 8px 40px rgba(57,100,150,0.06);
  text-align: center;
}
.auth-card img {
  width: 56px; height: 56px;
  border-radius: 50%;
  margin-bottom: 4px;
}
.auth-card h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--charcoal);
  letter-spacing: 2px;
  margin-bottom: 4px;
}
.auth-card .sub {
  font-size: 13px;
  color: var(--gray);
  margin-bottom: 8px;
}
.auth-card .tab-row {
  display: flex;
  gap: 0;
  margin-bottom: 8px;
  background: rgba(57,100,150,0.04);
  border-radius: 10px;
  padding: 4px;
}
.auth-tab {
  flex: 1;
  padding: 10px;
  font-size: 14px;
  font-weight: 500;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  background: transparent;
  color: var(--gray);
  transition: all 240ms;
}
.auth-tab.active {
  background: #fff;
  color: var(--blue);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.auth-field {
  width: 100%;
  padding: 9px 14px;
  border-radius: 10px;
  border: 1px solid rgba(57,100,150,0.15);
  background: rgba(255,255,255,0.7);
  font-size: 14px;
  margin-bottom: 4px;
  outline: none;
  font-family: inherit;
  transition: border-color 320ms;
}
.auth-field:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(57,100,150,0.06);
}
.btn-auth {
  width: 100%;
  padding: 11px;
  border-radius: 10px;
  border: none;
  background: linear-gradient(135deg, var(--blue), #4A7DB5);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 1px;
  margin-top: 4px;
  transition: all 320ms;
}
.btn-auth:hover {
  box-shadow: 0 6px 24px rgba(57,100,150,0.25);
  transform: translateY(-1px);
}
.auth-card .foot-text {
  font-size: 12px;
  color: var(--gray);
  margin-top: 20px;
  line-height: 1.8;
}
.auth-card .foot-text a {
  color: var(--blue);
  text-decoration: none;
}
.auth-back {
  position: fixed;
  top: 24px; left: 24px;
  font-size: 14px;
  color: var(--gray);
  text-decoration: none;
  z-index: 10;
  transition: color 240ms;
}
.auth-back:hover { color: var(--blue); }