:root {
  color-scheme: dark;
  --obito-bg: #080b10;
  --obito-panel: rgba(17, 22, 30, 0.92);
  --obito-panel-strong: #11161f;
  --obito-text: #f5f1e8;
  --obito-muted: #aeb7c3;
  --obito-line: rgba(245, 241, 232, 0.13);
  --obito-red: #d84f3d;
  --obito-gold: #f1c766;
  --obito-teal: #2fb6a0;
  --obito-blue: #4f7dff;
  --obito-shadow: 0 28px 80px rgba(0, 0, 0, 0.45);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

html.login-pf,
html.login-pf body {
  min-height: 100%;
}

html.login-pf body {
  margin: 0;
  overflow-x: hidden;
  background:
    linear-gradient(115deg, rgba(216, 79, 61, 0.16), transparent 31%),
    linear-gradient(245deg, rgba(47, 182, 160, 0.12), transparent 34%),
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 18px),
    radial-gradient(circle at 50% 0%, rgba(79, 125, 255, 0.12), transparent 42%),
    var(--obito-bg);
  color: var(--obito-text);
}

html.login-pf body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(8, 11, 16, 0.2), rgba(8, 11, 16, 0.82) 64%),
    repeating-linear-gradient(0deg, transparent 0 34px, rgba(245, 241, 232, 0.035) 34px 35px);
}

.login-pf-page {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(340px, 1fr) minmax(360px, 440px);
  align-items: center;
  gap: 60px;
  width: min(1180px, calc(100vw - 48px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 18px 0 62px;
}

.login-pf-page::before {
  content: "Obito";
  display: block;
  align-self: center;
  max-width: 640px;
  color: var(--obito-text);
  font-size: clamp(72px, 8vw, 124px);
  line-height: 1;
  font-weight: 900;
  letter-spacing: 0;
  text-shadow: 0 18px 42px rgba(0, 0, 0, 0.45);
  transform: translateY(-100px);
  transform-origin: left center;
}

html[lang="en"] .login-pf-page::before {
  content: "Obito";
}

.login-pf-page::after {
  content: "噢比兔AI教育\A与噢比兔一起，探索奇妙的人工智能世界！";
  position: absolute;
  left: 0;
  top: calc(50% - 34px);
  white-space: pre-line;
  color: var(--obito-muted);
  font-size: 16px;
  line-height: 1.8;
  border-left: 4px solid var(--obito-red);
  padding-left: 18px;
  max-width: 420px;
}

html[lang="en"] .login-pf-page::after {
  content: "Obito AI Education\AExplore the amazing world of artificial intelligence with Obito!";
}

#kc-header {
  position: absolute;
  left: 0;
  top: 22px;
}

#kc-header-wrapper {
  width: clamp(180px, 24vw, 200px);
  aspect-ratio: 482 / 147;
  overflow: hidden;
  color: transparent;
  font-size: 0;
  line-height: 0;
  text-indent: -9999px;
  background: url("../img/logo_word.png") left center / contain no-repeat;
  filter:
    drop-shadow(0 0 8px rgba(245, 241, 232, 0.10))
    drop-shadow(0 0 18px rgba(79, 125, 255, 0.16))
    drop-shadow(0 0 26px rgba(241, 199, 102, 0.12));
}

.login-pf-page .card-pf {
  grid-column: 2;
  width: 100%;
  max-width: 440px;
  margin: 0;
  padding: 34px;
  justify-self: end;
  color: var(--obito-text);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), transparent 34%),
    var(--obito-panel);
  border: 1px solid var(--obito-line);
  border-radius: 8px;
  box-shadow: var(--obito-shadow);
  backdrop-filter: blur(20px);
}

.login-pf-page .card-pf::before {
  content: "";
  display: block;
  width: 54px;
  height: 5px;
  margin-bottom: 22px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--obito-red), var(--obito-gold), var(--obito-teal));
}

.login-pf-header {
  margin-bottom: 26px;
}

.login-pf-header h1,
#kc-page-title {
  margin: 0;
  color: var(--obito-text);
  font-size: 28px;
  line-height: 1.18;
  font-weight: 860;
  letter-spacing: 0;
}

#kc-page-title::after {
  content: "请输入您的用户名和密码";
  display: block;
  margin-top: 10px;
  color: var(--obito-muted);
  font-size: 14px;
  line-height: 1.6;
  font-weight: 500;
}

html[lang^="en"] #kc-page-title::after {
  content: "Enter your username and password";
  display: block;
  margin-top: 10px;
  color: var(--obito-muted);
  font-size: 14px;
  line-height: 1.6;
  font-weight: 500;
}

#kc-content,
#kc-content-wrapper,
#kc-form,
#kc-form-wrapper {
  background: transparent;
  box-shadow: none;
}

.form-group {
  margin-bottom: 18px;
}

.pf-c-form__label,
.pf-c-form__label-text,
label {
  color: #d9e0ea;
  font-size: 13px;
  font-weight: 760;
  letter-spacing: 0;
}

input[type="text"],
input[type="password"],
input[type="email"],
.pf-c-form-control {
  width: 100%;
  height: 40px;
  min-height: 40px;
  padding: 0 12px;
  border: 1px solid rgba(174, 183, 195, 0.3);
  border-radius: 8px;
  background: rgba(7, 10, 15, 0.72);
  color: var(--obito-text);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
  font-size: 14px;
  transition: border-color 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
.pf-c-form-control:focus {
  border-color: var(--obito-gold);
  background: rgba(9, 13, 20, 0.92);
  box-shadow: 0 0 0 3px rgba(241, 199, 102, 0.18);
  outline: none;
}

input[aria-invalid="true"],
.pf-c-form-control[aria-invalid="true"] {
  border-color: rgba(216, 79, 61, 0.72);
  background-image: none !important;
  background-repeat: no-repeat;
  padding-right: 12px;
  --pf-c-form-control--m-error--BackgroundImage: none;
}

.pf-c-input-group .pf-c-form-control[aria-invalid="true"] {
  border-color: transparent;
  background-image: none !important;
}

.pf-c-input-group {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 44px;
  align-items: stretch;
  overflow: hidden;
  border: 1px solid rgba(174, 183, 195, 0.3);
  border-radius: 8px;
  background: rgba(7, 10, 15, 0.72);
}

.pf-c-input-group:focus-within {
  border-color: var(--obito-gold);
  box-shadow: 0 0 0 3px rgba(241, 199, 102, 0.18);
}

.pf-c-input-group .pf-c-form-control {
  height: 40px;
  min-height: 40px;
  padding: 0 12px;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.pf-c-input-group .pf-c-button.pf-m-control {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 40px;
  min-height: 40px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--obito-muted);
  box-shadow: none;
  --pf-c-button--after--BorderColor: transparent;
  --pf-c-button--m-control--after--BorderColor: transparent;
  --pf-c-button--m-control--after--BorderTopColor: transparent;
  --pf-c-button--m-control--after--BorderRightColor: transparent;
  --pf-c-button--m-control--after--BorderBottomColor: transparent;
  --pf-c-button--m-control--after--BorderLeftColor: transparent;
  transition: background 0.16s ease, color 0.16s ease;
}

.pf-c-input-group .pf-c-button.pf-m-control:hover,
.pf-c-input-group .pf-c-button.pf-m-control:focus {
  background: rgba(12, 16, 22, 0.96);
  color: var(--obito-gold);
}

.pf-c-input-group .pf-c-button.pf-m-control::after {
  border-color: transparent !important;
  box-shadow: none !important;
}

.pf-c-input-group .pf-c-button.pf-m-control i {
  font-size: 16px;
}

.login-pf-settings {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 28px;
  margin-top: -2px;
  margin-bottom: 22px;
}

.checkbox label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--obito-muted);
  font-size: 13px;
  font-weight: 600;
}

.checkbox input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--obito-red);
}

#kc-login,
input[type="submit"],
.pf-c-button.pf-m-primary {
  width: 100%;
  min-height: 50px;
  border: 0;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--obito-red), #b93e33 56%, #963329);
  color: #fff;
  font-size: 15px;
  font-weight: 840;
  letter-spacing: 0;
  box-shadow: 0 18px 38px rgba(216, 79, 61, 0.28);
  transition: transform 0.16s ease, box-shadow 0.16s ease, filter 0.16s ease;
}

#kc-login:hover,
input[type="submit"]:hover,
.pf-c-button.pf-m-primary:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
  box-shadow: 0 22px 46px rgba(216, 79, 61, 0.34);
}

#kc-locale {
  position: absolute;
  right: 34px;
  top: 22px;
  z-index: 20;
}

#kc-locale-dropdown {
  position: relative;
}

#kc-current-locale-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-width: 92px;
  min-height: 32px;
  padding: 0 12px 0 17px;
  border: 1px solid rgba(174, 183, 195, 0.18);
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(7, 10, 15, 0.24)),
    rgba(7, 10, 15, 0.56);
  color: var(--obito-text);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  box-shadow:
    0 10px 24px rgba(0, 0, 0, 0.24),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  transition: border-color 0.16s ease, background 0.16s ease, box-shadow 0.16s ease, transform 0.16s ease;
}

#kc-current-locale-link::before {
  content: "\f0ac";
  font-family: FontAwesome;
  color: rgba(241, 199, 102, 0.95);
  font-size: 12px;
  line-height: 1;
  flex: 0 0 auto;
  width: 12px;
  text-align: center;
}

#kc-current-locale-link::after {
  content: "\f107";
  font-family: FontAwesome;
  color: rgba(241, 199, 102, 0.88);
  font-size: 12px;
  line-height: 1;
  flex: 0 0 auto;
}

#kc-current-locale-link:hover,
#kc-current-locale-link:focus,
#kc-current-locale-link[aria-expanded="true"] {
  border-color: rgba(241, 199, 102, 0.38);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(12, 16, 22, 0.42)),
    rgba(12, 16, 22, 0.82);
  box-shadow:
    0 12px 28px rgba(0, 0, 0, 0.28),
    0 0 0 3px rgba(241, 199, 102, 0.10),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  transform: translateY(-1px);
}

#kc-locale .pf-c-dropdown__menu {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  min-width: 188px;
  margin: 0;
  padding: 8px;
  list-style: none;
  border: 1px solid var(--obito-line);
  border-radius: 10px;
  background: rgba(12, 16, 22, 0.98);
  box-shadow: var(--obito-shadow);
  backdrop-filter: blur(18px);
  z-index: 30;
}

#kc-locale .pf-c-dropdown__menu li {
  margin: 0;
}

#kc-locale .pf-c-dropdown__menu li + li {
  margin-top: 4px;
}

.pf-c-dropdown__menu-item,
a {
  color: var(--obito-gold);
}

#kc-locale .pf-c-dropdown__menu-item {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--obito-text);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
}

#kc-locale .pf-c-dropdown__menu-item:hover,
#kc-locale .pf-c-dropdown__menu-item:focus {
  background: rgba(216, 79, 61, 0.14);
  color: var(--obito-gold);
  text-decoration: none;
}

.alert,
.pf-c-alert {
  border: 1px solid rgba(216, 79, 61, 0.35);
  border-radius: 8px;
  background: rgba(216, 79, 61, 0.1);
  color: #ffd9d2;
}

#input-error,
.pf-c-form__helper-text,
.pf-m-error {
  color: #ff9b8f;
}

@media (max-width: 820px) {
  .login-pf-page {
    display: block;
    width: min(100vw - 28px, 440px);
    min-height: 100vh;
    padding: 86px 0 28px;
  }

  .login-pf-page::before,
  .login-pf-page::after {
    display: none;
  }

  #kc-header {
    top: 22px;
    left: 0;
  }

  #kc-header-wrapper {
    width: 188px;
  }

  .login-pf-page .card-pf {
    max-width: none;
    padding: 28px 22px;
  }

  #kc-locale {
    right: 18px;
    top: 18px;
  }

  .login-pf-header h1,
  #kc-page-title {
    font-size: 24px;
  }
}