/* auth.css — 顶栏身份区 / 登录弹窗 / 右下角悬浮球 */

/* ===== 顶栏身份区 ===== */
.auth-area {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-left: clamp(0.6rem, 2.5vw, 1.6rem);
  flex-shrink: 0;
}
.auth-login-btn {
  /* 与一级导航标签完全一致：字号连续 clamp + 底部 padding 0.2rem，
     使文本中心与导航文本中心垂直对齐（导航文本下方有 padding + 下划线空间） */
  font-size: calc(0.55rem + 0.5vw); /* 老内核兑底（rem+vw） */
  font-size: clamp(0.6rem, calc(0.55rem + 0.5vw), 0.75rem); /* 与 .nav-links a 同公式：原 桌面0.75/移动0.6 双值 → 连续 */
  font-weight: 500;
  color: #64748b;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  display: inline-block;
  padding-bottom: 0.2rem;
  transition: color 0.2s;
}
.auth-login-btn:hover {
  color: var(--dark);
}

/* 用户头像（登录后） */
.user-avatar {
  /* 缩小到原 2.15rem 的 1/2 */
  width: 1.075rem;
  height: 1.075rem;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 0.6rem; /* 原 0.43rem(成8.6px/移动≈6px) 过小；头像径1.075rem 下单字可读 */
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
  user-select: none;
  /* 与导航文本中心对齐：导航文本因下方 padding+下划线偏上 2px，头像同步上移 */
  transform: translateY(-0.1rem);
  transition:
    transform 0.15s,
    box-shadow 0.15s;
}
.user-avatar:hover,
.user-avatar.open {
  transform: translateY(-0.1rem) scale(1.06);
  box-shadow: 0 0 0 0.1rem rgba(37, 99, 235, 0.18);
}

/* 头像下拉菜单（设置 / 退出） */
.user-menu {
  position: absolute;
  top: calc(100% + 0.45rem);
  right: 0;
  min-width: 8rem;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 0.45rem;
  box-shadow: 0 0.6rem 1.6rem rgba(15, 23, 42, 0.12);
  padding: 0.3rem;
  z-index: 210;
  display: none;
}
.user-menu.open {
  display: block;
}
.user-menu-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  border: none;
  background: none;
  padding: 0.5rem 0.6rem;
  border-radius: 0.3rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--body);
  cursor: pointer;
  white-space: nowrap;
  text-align: left;
  transition: background 0.15s;
}
.user-menu-item:hover {
  background: #f0f7ff;
}
.user-menu-item.danger {
  color: #dc2626;
}
.user-menu-item.danger:hover {
  background: #fef2f2;
}
.user-menu-name {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--dark);
  padding: 0.4rem 0.6rem 0.45rem;
  border-bottom: 1px solid #f1f5f9;
  margin-bottom: 0.25rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 9rem;
}

/* ===== 登录弹窗 ===== */
.login-modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
}
.login-modal.open {
  display: flex;
}
/* 移动端登录卡钉在固定高位（4.5rem），键盘弹出/收起全程位置不变（与导航栏同原则），
   不受键盘遮挡：4.5rem 卡顶 + 卡高 ≤~3.2rem 在 320px 级窄屏亦低于常见键盘顶边 */
@media (max-width: 768px) {
  .login-modal {
    align-items: flex-start;
    justify-content: center;
    padding-top: 4.5rem;
  }
}
.login-card {
  position: relative;
  width: min(18rem, calc(100vw - 2rem));
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 0.5rem;
  padding: 1.4rem 1.3rem 1.2rem;
  box-shadow: 0 1rem 2.5rem rgba(15, 23, 42, 0.18);
}
.login-close {
  position: absolute;
  top: 0.5rem;
  right: 0.6rem;
  border: none;
  background: none;
  font-size: 1.1rem;
  line-height: 1;
  color: #94a3b8;
  cursor: pointer;
}
.login-close:hover {
  color: var(--dark);
}
.login-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark);
}
.login-sub {
  font-size: 0.65rem;
  color: #64748b;
  margin: 0.3rem 0 0.9rem;
}
.login-card form {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.login-card input {
  height: 2rem;
  border: 1px solid #cbd5e1;
  border-radius: 0.3rem;
  padding: 0 0.6rem;
  font-size: 0.7rem;
  outline: none;
  transition: border-color 0.15s;
}
.login-card input:focus {
  border-color: #2563eb;
}
.login-error {
  font-size: 0.65rem;
  color: #dc2626;
  min-height: 0.8rem;
}
.login-card button[type="submit"] {
  height: 2rem;
  border: none;
  border-radius: 0.3rem;
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
}
.login-card button[type="submit"]:disabled {
  opacity: 0.55;
  cursor: default;
}
.login-card button[type="submit"]:not(:disabled):hover {
  opacity: 0.88;
}

/* 移动端字号已由 .auth-login-btn 基础 clamp 连续覆盖，无需断点 */