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

:root {
  --max-w: 1200px;
  --page-pad: 20px;
  --gap-lg: 24px;
  --accent: #5d86b1;
  --sub: #4b5563;
  --bg: #e6e9f0;
  --muted: #4b5563;
  --middle-min: 420px;
  --top-block: 224px;
  --bottom-block: 200px;
}

html,
body {
  margin: 0 !important;
  padding: 0 !important;
  height: 100% !important;
  font-size: 15px !important;
  line-height: 1.6 !important;
  overflow-x: hidden !important;
  overflow-y: auto !important;
}

body {
  overflow-x: hidden !important;
  background: var(--bg) !important;
}

#container {
  position: unset !important;
  top: unset !important;
  left: unset !important;
  z-index: auto !important;
  display: flex !important;
  flex-direction: column;
  width: 100% !important;
  max-width: 100vw !important;
  min-height: 100dvh !important;
  margin: 0 0 0 unset !important;
  margin-top: unset !important;
  margin-left: unset !important;
  overflow: visible !important;
  background: unset !important;
  box-shadow: unset !important;
  container-type: size;
  visibility: hidden;
}

.header-section,
.footer-section {
  position: relative;
  flex: 0 0 auto;
  height: 112px;
  padding: 0 0 88px;
}

.header-section {
  margin: 0 0 64px;
}

.header-section > img {
  display: block;
  max-width: 200px;
  height: auto;
  margin: 32px auto 8px;
}

.header-divider,
.footer-divider {
  position: absolute;
  height: 6px;
  background-color: var(--accent);
}

.header-divider {
  top: auto;
  right: auto;
  bottom: 0;
  left: 0;
}

.footer-divider {
  top: 0;
  right: 0;
  bottom: auto;
  left: auto;
}

.main-content {
  display: grid;
  flex: 1 1 0% !important;
  grid-template-columns: 1.4fr 1fr;
  grid-template-rows: minmax(0, 1fr);
  gap: var(--gap-lg);
  align-items: stretch;
  width: 100%;
  max-width: var(--max-w);
  min-height: var(--middle-min) !important;
  margin-inline: auto;
  padding: 0 var(--page-pad) 64px;
  overflow: visible;
}

.main-content > * {
  min-height: 0;
}

.announcements-section {
  width: 100%;
  min-height: 0;
  padding: 6px 8px 8px;
  overflow: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable both-edges;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--accent) 45%, transparent) transparent;
}

.announcements-section > .announcements-content {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  margin-right: 24px;
}

.announcements-section > .announcements-content.announcements-centered {
  justify-content: center;
}

.announcements-section > .announcements-content > :first-child {
  margin-top: 0;
}

.announcements-section > .announcements-content > :last-child {
  margin-bottom: 0;
}

.login-section {
  text-align: center;
  padding: 20px 0 0;
}

#container-login {
  width: 316px !important;
  height: unset !important;
  padding: 0 !important;
  text-align: unset !important;
}

#loginForm {
  padding: 0 !important;
}

.password {
  margin: 0 0 48px;
}

.footer-section {
  overflow: hidden;
  will-change: opacity, height;
  transition:
    opacity 0.35s ease,
    height 0.35s ease,
    padding 0.35s ease,
    margin 0.35s ease;
}

.copyright-text {
  position: absolute;
  margin-top: 12px;
  color: var(--sub);
  font-size: 0.85rem;
  line-height: 1.4;
  text-align: center;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.spinner-layout {
  position: absolute;
  inset: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #f4f4f4;
  z-index: 10000;
}

.windmill {
  position: relative;
  top: -10px;
  width: 10px;
  height: 10px;
  border-radius: 5px;
  background-color: #4285f4;
  color: #4285f4;
  transform-origin: 5px 15px;
  animation: windmill 2s infinite linear;
}

.windmill::before,
.windmill::after {
  content: '';
  display: inline-block;
  position: absolute;
}

.windmill::before {
  left: -8.66254px;
  top: 15px;
  width: 10px;
  height: 10px;
  border-radius: 5px;
  background-color: #64b5f6;
  color: #64b5f6;
}

.windmill::after {
  left: 8.66254px;
  top: 15px;
  width: 10px;
  height: 10px;
  border-radius: 5px;
  background-color: #1a73e8;
  color: #1a73e8;
}

.announcement-card {
  margin: 16px 0;
}

.announcement-card:first-child {
  margin-top: 0;
}

.announcement-date {
  margin: 0 0 4px;
  color: var(--sub);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
}

.announcement-title {
  margin: 8px 0 8px;
  color: #1f2b3a;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.25;
}

.announcement-body {
  margin: 0;
  padding: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

.announcement-body + .announcement-body {
  margin-top: 6px;
}

.announcement-body p {
  margin: 0 0 8px 0;
  line-height: 1.55;
}

.announcement-body p:last-child {
  margin-bottom: 0;
}

.portal-title {
  display: inline-block;
  color: #1f2b3a;
  font-size: 15px;
  font-weight: 700;
  padding-bottom: 24px;
}

.t-error,
.alert,
.alert-danger,
#loginForm > p {
  font-size: 0.8em;
}

#loginInputFrame {
  margin-top: 24px;
}

#loginInputFrame span {
  display: block;
  text-align: left;
  color: #1f2b3a;
  font-size: 0.9rem;
}

#login,
#password {
  display: block;
  width: 100%;
  height: 30px;
  padding: 0 14px;
  border: 1px solid #4b5563;
  border-radius: 22px;
  background: #ffffff;
  color: #1f2b3a;
  font-size: 0.95rem;
  outline: none;
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
}

#login {
  margin: 5px 0 16px;
}

#submit_0 {
  appearance: none;
  cursor: pointer;
  width: unset !important;
  height: 28px;
  margin: 0 0 8px;
  padding: 0 16px;
  border: 0;
  border-radius: 20px;
  background: #2e5daa;
  color: #fff;
  font-size: 10px;
  font-weight: 700;
}

#submit_0:hover {
  background: #254c90;
}

.announcements-section::-webkit-scrollbar {
  width: 4px;
  height: 4px;
  background: transparent;
}

.announcements-section::-webkit-scrollbar-track {
  background: transparent;
  margin-block: 4px;
  border-radius: 999px;
}

.announcements-section::-webkit-scrollbar-thumb {
  border-radius: 999px;
  border: 1px solid transparent;
  background-clip: padding-box;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--accent) 25%, #fff 0%) 0%,
    color-mix(in srgb, var(--accent) 40%, #000 0%) 100%
  );
  opacity: 0.3;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.05),
    0 0 1px rgba(0, 0, 0, 0.2);
  transition:
    opacity 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease,
    width 0.2s ease;
}

.announcements-section::-webkit-scrollbar-corner {
  background: transparent;
}

.announcements-section:hover {
  scrollbar-color: color-mix(in srgb, var(--accent) 50%, #fff 10%) rgba(255, 255, 255, 0.06);
}

.announcements-section:hover::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

.announcements-section:hover::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.06);
}

.announcements-section:hover::-webkit-scrollbar-thumb {
  opacity: 0.6;
  border-color: rgba(43, 44, 48, 0.4);
}

.announcements-section::-webkit-scrollbar-thumb:active {
  opacity: 1;
  border-color: rgba(43, 44, 48, 1);
}

#login:focus,
#password:focus,
#submit_0:focus {
  border-color: #2e5daa;
  box-shadow: 0 0 0 3px rgba(46, 93, 170, 0.3);
}

#login:-webkit-autofill,
#password:-webkit-autofill,
#login:-webkit-autofill:hover,
#password:-webkit-autofill:hover,
#login:-webkit-autofill:focus,
#password:-webkit-autofill:focus,
#login:-webkit-autofill:active,
#password:-webkit-autofill:active {
  -webkit-box-shadow: 0 0 0 1000px #ffffff inset !important;
  -webkit-text-fill-color: #1f2b3a !important;
  background-color: #ffffff !important;
  background-clip: content-box !important;
}

span.password i.icon-eye {
  top: 2.4em !important;
  right: 8px !important;
}

@container (max-height: calc(var(--top-block) + var(--middle-min) + var(--bottom-block))) {
  .footer-section {
    opacity: 0;
    height: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    pointer-events: none;
    visibility: hidden;
  }

  .footer-section .footer-divider {
    display: none;
  }
}

@supports not (container-type: size) {
  @media (max-height: 844px) {
    .footer-section {
      opacity: 0;
      height: 0 !important;
      padding: 0 !important;
      margin: 0 !important;
      pointer-events: none;
      visibility: hidden;
    }

    .footer-section .footer-divider {
      display: none;
    }
  }
}

@media (max-width: 960px) {
  #container {
    display: block !important;
    height: auto !important;
    min-height: 100dvh;
    overflow: auto !important;
  }

  .main-content {
    display: flex !important;
    /* 順序を逆転（ログインが上） */
    flex-direction: column-reverse !important;
    flex: 0 0 auto !important;
    grid-template-columns: 1fr !important;
    grid-auto-rows: auto;
    overflow: visible !important;
  }

  .announcements-section {
    overflow: visible !important;
    height: auto !important;
    max-height: 70dvh !important;
    overflow: auto !important;
  }

  .login-section {
    margin-top: var(--gap-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .portal-title {
    text-align: center;
  }

  #container-login {
    margin: 0 auto;
  }

  .footer-section {
    margin-top: var(--gap-lg);
  }
}

@media (min-width: 961px) {
  .main-content {
    align-items: center;
    justify-items: center;
  }

  .announcements-section {
    display: flex;
    flex-direction: column;
    justify-content: center;
    justify-self: stretch;
    max-height: 100%;
  }
}

@keyframes windmill {
  0% {
    transform: rotateZ(0deg) translate3d(0, 0, 0);
  }

  100% {
    transform: rotateZ(720deg) translate3d(0, 0, 0);
  }
}