/* The public entrance borrows the museum's night scene and paper/blue palette.
   Keep every rule scoped: no signed-in student or teacher styles are changed. */
#loginPage {
  --login-ink: #12314c;
  --login-muted: #647e90;
  --login-paper: #fffdf4;
  position: relative;
  isolation: isolate;
  min-height: 100vh;
  min-height: 100dvh;
  padding: max(18px, env(safe-area-inset-top)) 18px max(16px, env(safe-area-inset-bottom));
  overflow: clip;
  background: #f8f6eb;
  color: var(--login-ink);
  align-items: stretch;
}
#loginPage .login-scene {
  position: absolute;
  z-index: -1;
  inset: 0 0 auto;
  height: 100%;
  min-height: 260px;
  overflow: hidden;
  border-radius: 0;
  background: #113763;
  transition: height 1s cubic-bezier(.22,.7,.2,1), border-radius 1s ease;
}
#loginPage .login-scene::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #08244d24, transparent 28%, transparent 65%, #0c315f3d);
}
#loginPage .login-scene video { display: block; width: 100%; height: 100%; object-fit: cover; object-position: 50% 45%; }
#loginPage.is-settled .login-scene { height: 66vh; height: 66dvh; border-radius: 0 0 34px 34px; }
#loginPage .login-card {
  display: flex;
  flex-direction: column;
  width: min(470px, 100%);
  min-height: calc(100vh - 36px);
  min-height: calc(100dvh - max(18px, env(safe-area-inset-top)) - max(16px, env(safe-area-inset-bottom)));
  padding: 0;
  border: 0;
  border-radius: 0;
  overflow: visible;
  background: none;
  box-shadow: none;
  text-align: left;
}
#loginPage .login-card::before, #loginPage .login-card::after { display: none; }
#loginPage .login-site-head { display: grid; grid-template-columns: 44px minmax(0, 1fr) 44px; align-items: center; gap: 10px; }
#loginPage .login-brand { justify-self: center; display: inline-flex; align-items: center; gap: 8px; min-width: 0; min-height: 44px; padding: 0; border: 0; border-radius: 0; background: none; box-shadow: none; }
#loginPage .whale-mark { display: grid; place-items: center; flex: 0 0 30px; width: 30px; height: 30px; margin: 0; padding: 4px; border: 1px solid #ffffff8c; border-radius: 10px; background: #fffdf4f5; box-shadow: 0 3px 12px #041e3a14; }
#loginPage .login-brand strong { display: block; color: #fffdf4; text-shadow: 0 1px 8px #092b55; font-size: 16px; line-height: 1.3; font-weight: 600; letter-spacing: 1px; white-space: nowrap; }
#loginPage .login-back, #loginPage .login-motion-toggle { position: static; display: inline-grid; place-items: center; width: 44px; height: 44px; min-height: 44px; padding: 0; border: 1px solid #ffffff52; border-radius: 50%; background: #10335e70; color: #fffdf4; backdrop-filter: blur(6px); cursor: pointer; }
#loginPage .login-back::before { display: none; }
#loginPage .login-back svg { width: 23px; height: 23px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
#loginPage .login-motion-slot { display: block; width: 44px; height: 44px; }
#loginPage .login-motion-toggle svg { width: 22px; height: 22px; }
#loginPage .login-motion-toggle .login-pause-icon { fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; }
#loginPage .login-motion-toggle .login-play-icon { display: none; fill: currentColor; }
#loginPage .login-motion-toggle[data-state="paused"] .login-play-icon { display: block; }
#loginPage .login-motion-toggle[data-state="paused"] .login-pause-icon { display: none; }
#loginPage .login-form-card {
  margin-top: auto;
  padding: 24px;
  border: 1px solid #ffffffe8;
  border-radius: 27px;
  background: #fffdf4f7;
  box-shadow: 0 14px 38px #12314c1a;
  backdrop-filter: blur(12px);
  animation: studentLoginFallback .65s .2s both;
  transition: opacity .65s ease, transform .85s cubic-bezier(.22,.7,.2,1);
}
#loginPage .login-form-heading { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 20px; }
#loginPage .login-title { font-family: "Songti SC", "SimSun", serif; font-size: 28px; line-height: 1.4; font-weight: 900; letter-spacing: 1.5px; }
#loginPage .eyebrow { margin: 0; color: #8399a7; font-size: 8px; letter-spacing: 1.6px; }
#loginPage .login-sub { max-width: none; margin: 8px 0 19px; color: var(--login-muted); font-size: 12px; line-height: 1.7; }
#loginPage .service-note { margin: 0 0 14px; padding: 0; border: 0; border-radius: 0; background: none; color: #84909a; font-size: 10px; line-height: 1.6; }
#loginPage .login-modes { display: flex; gap: 5px; margin: 0 0 18px; padding: 5px; border-radius: 12px; background: #e8f0f4; }
#loginPage .login-mode { flex: 1; min-height: 38px; border-radius: 8px; color: #688194; font-size: 11px; }
#loginPage .login-mode.active { color: #1974b8; background: white; box-shadow: 0 3px 9px #224d6910; }
#loginPage .login-mode:disabled, #loginPage .login-modes:has(.login-mode:disabled) { display: none; }
#loginPage .field-label { margin: 0 0 8px; color: #395c76; font-size: 12px; font-weight: 600; line-height: 1.5; letter-spacing: .3px; }
#loginPage .login-panel .field-label:not(:first-child) { margin-top: 14px; }
#loginPage .login-input { height: 51px; padding: 0 14px; border: 1.5px solid #c4d8e4; border-radius: 12px; background: #fff; color: var(--login-ink); text-align: left; font-size: 16px; letter-spacing: .8px; }
#loginPage .login-input::placeholder { color: #9baeba; font-size: 13px; letter-spacing: 0; }
#loginPage .login-input:focus { border-color: #319ace; box-shadow: 0 0 0 3px #43b3c31c; }
#loginPage .primary-btn { min-height: 51px; margin-top: 15px; border: 1px solid #ffffff6b; border-radius: 12px; background: linear-gradient(135deg, #159ed2, #0b75b7); box-shadow: 0 7px 15px #0f73b524; color: white; font-size: 15px; font-weight: 700; letter-spacing: 1px; }
#loginPage .primary-btn::after { content: "→"; margin-left: 12px; font-size: 19px; font-weight: 400; }
#loginPage .login-promise { display: block; margin: 13px 0 0; padding: 0; border: 0; border-radius: 0; background: none; color: #84919a; font-size: 10px; line-height: 1.7; }
#loginPage .login-promise::before { display: none; }
#loginPage .login-error { min-height: 18px; margin-top: 9px; color: #b84d48; font-size: 12px; line-height: 1.6; }
#loginPage .login-error:empty { min-height: 0; margin-top: 0; }
#loginPage .login-hint { margin: 14px 0 0; color: #7d91a0; text-align: center; font-size: 10px; line-height: 1.7; transition: opacity .6s ease; }
#loginPage .send-code { border-color: #c4d8e4; border-radius: 12px; background: #edf6fa; color: #3a7b9f; font-size: 11px; }
#loginPage .code-row { grid-template-columns: minmax(0, 1fr) 103px; }
#loginPage .profile-picker { margin-top: 14px; border-color: #d8e5eb; border-radius: 12px; background: #eef7fa; }
#loginPage .login-skip { position: absolute; z-index: 3; right: 19px; top: 84px; min-height: 40px; padding: 0 14px; border: 1px solid #ffffff75; border-radius: 12px; background: #fffdf4ed; color: #355870; font-size: 12px; cursor: pointer; }
#loginPage .login-skip span { margin-left: 6px; }
#loginPage .login-skip[hidden] { display: none; }
#loginPage .login-motion-toggle[hidden] { display: none; }
#loginPage.is-intro .login-form-card { animation: none; opacity: 0; transform: translateY(65px); pointer-events: none; }
#loginPage.is-intro .login-hint { opacity: 0; }
#loginPage.is-settled .login-form-card { animation: none; opacity: 1; transform: translateY(0); }
#loginPage a:focus-visible, #loginPage button:focus-visible { outline: 3px solid #ffd84a; outline-offset: 3px; }
@keyframes studentLoginFallback { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
@media (min-width: 600px) {
  #loginPage .login-scene video { object-fit: contain; background: #113763; }
  #loginPage.is-settled .login-scene { height: 76dvh; }
}
@media (max-width: 350px) {
  #loginPage { padding-inline: 13px; }
  #loginPage .login-form-card { padding: 20px; }
  #loginPage .login-brand { gap: 6px; }
  #loginPage .login-brand strong { font-size: 14px; letter-spacing: .5px; }
  #loginPage .eyebrow { font-size: 7px; letter-spacing: 1px; }
}
@media (max-height: 690px) {
  #loginPage { padding-top: max(12px, env(safe-area-inset-top)); padding-bottom: max(12px, env(safe-area-inset-bottom)); }
  #loginPage .login-card { min-height: calc(100dvh - 24px); }
  #loginPage .login-form-card { margin-top: max(120px, 19dvh); padding: 19px 21px; border-radius: 24px; }
  #loginPage .login-title { font-size: 25px; }
  #loginPage .login-form-heading { margin-bottom: 15px; }
  #loginPage .login-sub { margin: 5px 0 13px; font-size: 11px; }
  #loginPage .service-note { margin-bottom: 10px; }
  #loginPage .login-hint { margin-top: 10px; font-size: 9px; }
  #loginPage .login-skip { top: 76px; }
}
@media (prefers-reduced-motion: reduce) {
  #loginPage .login-scene, #loginPage .login-form-card, #loginPage .login-hint { animation: none; transition: none; }
  #loginPage .login-scene { height: 66vh; height: 66dvh; border-radius: 0 0 34px 34px; }
}