/* =========================================================
   登录页专属样式
   ========================================================= */

.auth-wrap {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 40px 20px;
  background: linear-gradient(135deg, #3f51b5 0%, #448aff 100%);
}
.auth-card {
  background: #fff; border-radius: 12px;
  padding: 40px 36px; width: 100%; max-width: 400px;
  box-shadow: 0 10px 40px rgba(0,0,0,.2);
}
.auth-card h2 { margin: 0 0 24px; font-size: 22px; text-align: center; color: #333; }
.auth-card .field { margin-bottom: 18px; }
.auth-card label { display: block; font-size: 13px; color: #666; margin-bottom: 6px; }
.auth-card input {
  width: 100%; padding: 10px 12px; font-size: 14px;
  border: 1px solid #ddd; border-radius: 6px;
  background: transparent; color: inherit;
  transition: border-color .2s;
  box-sizing: border-box;
}
.auth-card input:focus { outline: none; border-color: #3f51b5; }
/* flex 行内的 input（2FA 验证码 / 找回密码验证码）：不受 width:100% 干扰 */
.auth-card .field > div[style*="display:flex"] input {
  width: auto;
  flex: 1;
}
.auth-card .btn {
  width: 100%; padding: 12px; font-size: 15px; font-weight: 500;
  color: #fff; background: #3f51b5; border: none; border-radius: 6px;
  cursor: pointer; transition: background .2s;
}
.auth-card .btn:hover { background: #303f9f; }
/* flex 行内的按钮（2FA/找回密码验证码旁边的发送按钮）：不撑满整行 */
.auth-card .field > div[style*="display:flex"] .btn {
  width: auto;
  flex-shrink: 0;
  padding: 10px 14px;
  font-size: 14px;
}
.auth-card .tip { text-align: center; font-size: 12px; color: #999; margin-top: 14px; }
.auth-card .tip a { color: #3f51b5; text-decoration: none; }
.mdui-theme-layout-dark .auth-wrap { background: linear-gradient(135deg,#1a1a2e 0%,#16213e 100%); }
.mdui-theme-layout-dark .auth-card { background: #222; }
.mdui-theme-layout-dark .auth-card h2 { color: #eee; }
.mdui-theme-layout-dark .auth-card label { color: #aaa; }
.mdui-theme-layout-dark .auth-card input { color: #eee; border-color: #444; background: #1a1a1a; }
.mdui-theme-layout-dark .auth-card input:focus { border-color: #448aff; }
.mdui-theme-layout-dark .auth-card .btn { background: #3949ab; }
.mdui-theme-layout-dark .auth-card .btn:hover { background: #303f9f; }

/* 登录页顶部 header */
body > .header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 28px; height: 56px;
  background: rgba(255,255,255,.95); backdrop-filter: blur(10px);
  box-shadow: 0 1px 4px rgba(0,0,0,.08);
}
body > .header .logo { font-weight: 700; font-size: 16px; color: #333; text-decoration: none; display: flex; align-items: center; gap: 8px; }
body > .header .logo .dot { width: 10px; height: 10px; border-radius: 50%; background: #3f51b5; }
body > .header nav { display: flex; gap: 22px; }
body > .header nav a { font-size: 14px; color: #666; text-decoration: none; transition: color .2s; }
body > .header nav a:hover, body > .header nav a.active { color: #3f51b5; }
body > .header .icon-btn { background: none; border: none; font-size: 18px; cursor: pointer; padding: 4px 8px; }
.mdui-theme-layout-dark body > .header { background: rgba(30,30,30,.95); }
.mdui-theme-layout-dark body > .header .logo { color: #eee; }
.mdui-theme-layout-dark body > .header nav a { color: #aaa; }
.mdui-theme-layout-dark body > .header nav a:hover, .mdui-theme-layout-dark body > .header nav a.active { color: #448aff; }
body > .auth-wrap { margin-top: 56px; min-height: calc(100vh - 56px); }