/*
 * 与学术交流周（aew）学生端一致的蓝灰主题、网格底纹、浅白卡片
 * 配色参考 aew/web/src/app/globals.css；不引入新框架。
 */
:root {
  --bio-bg: #f4f9fe;
  --bio-text-main: #1f2f45;
  --bio-text-sub: #445d7d;
  --bio-blue-2: #7f9ab9;
  --bio-blue-3: #5f7f9f;
  --bio-blue-accent: #5f82ac;
  --bio-blue-hover: #4f6f95;
  --bio-border: #bfd1e2;
  --bio-card: rgba(255, 255, 255, 0.92);
  --bio-soft: #f4f8fc;
  --bio-focus-ring: rgba(118, 140, 206, 0.25);
}

html {
  box-sizing: border-box;
}
*,
*::before,
*::after {
  box-sizing: inherit;
}

body.signinbg,
.signinbg {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bio-bg);
  background-image:
    radial-gradient(circle at 18% 16%, rgba(201, 228, 249, 0.34) 0, rgba(201, 228, 249, 0) 54%),
    radial-gradient(circle at 78% 8%, rgba(133, 157, 195, 0.14) 0, rgba(133, 157, 195, 0) 50%),
    linear-gradient(rgba(95, 130, 172, 0.065) 1px, transparent 1px),
    linear-gradient(90deg, rgba(95, 130, 172, 0.065) 1px, transparent 1px);
  background-position: center center;
  background-repeat: no-repeat, no-repeat, repeat, repeat;
  background-size: auto, auto, 26px 26px, 26px 26px;
  background-attachment: fixed;
  color: var(--bio-text-main);
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  padding-bottom: 2rem;
}

.bio-logo {
  text-align: center;
  margin: 0.35rem 0 0.15rem;
}
.bio-logo img {
  max-width: min(360px, 90vw);
  height: auto;
  vertical-align: middle;
}

.signinmain {
  width: 100%;
  max-width: min(92vw, 640px);
  min-height: auto;
  height: auto;
  margin: 1rem auto 2rem;
  padding: 1.35rem 1.25rem 1.6rem;
  background: var(--bio-card);
  border: 1px solid var(--bio-border);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(31, 47, 69, 0.08);
}

.signinmain.signinmain--compact {
  max-width: min(92vw, 440px);
}

.signinlabel {
  font-size: 15px;
  font-weight: 500;
  color: var(--bio-text-sub);
  margin-top: 0.35rem;
  display: inline-block;
}

.signinhead {
  font-weight: 700;
  text-align: center;
  color: var(--bio-text-main);
  margin: 0.3rem 0;
}

h1.signinhead {
  font-size: 1.6rem;
  letter-spacing: 0.02em;
}
h2.signinhead {
  font-size: 1.12rem;
  color: var(--bio-text-sub);
  font-weight: 600;
}
h3.signinhead {
  font-size: 1.05rem;
  color: var(--bio-text-sub);
  font-weight: 500;
  margin-top: 0.45rem;
}

.signinok {
  color: #fff !important;
  font-weight: 600;
  margin-top: 1rem;
  border-radius: 8px;
}

.mainfont {
  font-weight: 500;
  color: var(--bio-text-sub);
  font-size: 14px;
  line-height: 1.55;
}

.mainfont a,
.signinmain a.mainfont {
  color: var(--bio-blue-accent);
  font-weight: 600;
  text-decoration: none;
  transition: color 150ms ease;
}
.mainfont a:hover,
.signinmain a.mainfont:hover {
  color: var(--bio-blue-hover);
  text-decoration: underline;
}

.headlink {
  color: #dcedfb;
  font-weight: 700;
  text-decoration: underline;
}
.headlink:hover {
  color: #fff;
}

.mainheader {
  height: auto;
  min-height: 48px;
  color: #fff;
  text-align: center;
  padding: 12px 14px;
  font-size: 15px;
  font-weight: 500;
  background: linear-gradient(90deg, var(--bio-blue-3), var(--bio-blue-accent));
  box-shadow: 0 2px 12px rgba(31, 47, 69, 0.12);
}

.infolabel {
  font-size: 15px;
  color: var(--bio-text-sub);
  font-weight: 500;
}

.upload {
  color: var(--bio-text-main);
  font-weight: 600;
  font-size: 14px;
  line-height: 1.5;
}

.signinmain .form-control {
  border-radius: 8px;
  border-color: var(--bio-border);
  color: var(--bio-text-main);
  transition: border-color 150ms ease, box-shadow 150ms ease;
}
.signinmain .form-control:focus {
  border-color: var(--bio-blue-2);
  box-shadow: 0 0 0 3px var(--bio-focus-ring);
}

.signinmain textarea.form-control,
.signinmain textarea {
  min-height: 100px;
  border-radius: 8px;
  border: 1px solid var(--bio-border);
  width: 100%;
  padding: 8px 10px;
}

.signinmain .btn-success,
.signinmain .btn.btn-success {
  background-color: var(--bio-blue-3) !important;
  border-color: var(--bio-blue-hover) !important;
  color: #fff !important;
  transition: background-color 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
}
.signinmain .btn-success:hover,
.signinmain .btn-success:focus,
.signinmain .btn.btn-success:hover,
.signinmain .btn.btn-success:focus {
  background-color: var(--bio-blue-hover) !important;
  border-color: #3d5a78 !important;
  color: #fff !important;
}

.signinmain input[type="radio"].mainfont {
  margin-right: 6px;
  margin-top: 6px;
}

.bio-pw-panel {
  max-width: min(92vw, 440px);
  margin: 1.5rem auto;
  padding: 1.5rem 1.35rem;
  background: var(--bio-card);
  border: 1px solid var(--bio-border);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(31, 47, 69, 0.08);
}
.bio-pw-panel .form-row-label {
  display: block;
  margin-top: 0.75rem;
  margin-bottom: 0.25rem;
  color: var(--bio-text-sub);
  font-size: 14px;
  font-weight: 500;
}
.bio-pw-panel input[type="password"] {
  width: 100%;
  max-width: 100%;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--bio-border);
  font-size: 15px;
}
.bio-pw-panel .btn-submit-pw {
  margin-top: 1.25rem;
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--bio-blue-hover);
  background: var(--bio-blue-3);
  color: #fff;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  transition: background-color 150ms ease;
}
.bio-pw-panel .btn-submit-pw:hover {
  background: var(--bio-blue-hover);
}