.login-screen {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    linear-gradient(135deg, rgba(12, 25, 41, 0.76), rgba(15, 38, 60, 0.6)),
    url("../assets/images/desktop-bg-clean.png") center center / cover no-repeat,
    #102033;
}

.login-screen.is-hidden {
  display: none;
}

.login-card {
  width: min(420px, 100%);
  padding: 34px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.26);
  display: grid;
  gap: 18px;
}

.login-eyebrow {
  margin: 0 0 8px;
  color: #64748b;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.login-card h1 {
  margin: 0;
  color: #0f172a;
  font-size: 28px;
  font-weight: 800;
}

.login-card label {
  display: grid;
  gap: 8px;
  color: #334155;
  font-size: 14px;
  font-weight: 600;
}

.login-card input {
  height: 44px;
  padding: 0 12px;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  background: #ffffff;
  color: #0f172a;
  font-size: 15px;
  outline: none;
}

.login-card input:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.14);
}

.login-error {
  min-height: 18px;
  margin: -4px 0 0;
  color: #dc2626;
  font-size: 13px;
}

.login-submit {
  height: 44px;
  border: 0;
  border-radius: 6px;
  background: #1e3a8a;
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

.login-submit:hover {
  background: #1d4ed8;
}

body:not(.is-authenticated) .desktop-shell {
  visibility: hidden;
}

.desktop-shell {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
}

.desktop-background,
.desktop-overlay {
  position: absolute;
  inset: 0;
}

.desktop-corner-image {
  position: absolute;
  z-index: 2;
  pointer-events: none;
  user-select: none;
}

.desktop-background {
  background:
    linear-gradient(rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.04)),
    url("../图片.png") center center / cover no-repeat,
    linear-gradient(135deg, #f2f4f7 0%, #d8dbe1 48%, #c4c8d0 100%);
  transform: scale(1.01);
}

.desktop-overlay {
  background:
    linear-gradient(125deg, rgba(255, 255, 255, 0.28) 0%, rgba(255, 255, 255, 0.04) 18%, rgba(255, 255, 255, 0) 42%),
    linear-gradient(305deg, rgba(255, 255, 255, 0.22) 0%, rgba(255, 255, 255, 0) 18%, rgba(255, 255, 255, 0) 100%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.02) 34%, rgba(0, 0, 0, 0.06) 100%);
}

.desktop-overlay::before,
.desktop-overlay::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  pointer-events: none;
}

.desktop-overlay::before {
  height: 34vh;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(226, 229, 235, 0.3) 100%),
    repeating-linear-gradient(0deg, transparent 0 54px, rgba(255, 255, 255, 0.16) 54px 56px),
    repeating-linear-gradient(60deg, transparent 0 54px, rgba(255, 255, 255, 0.12) 54px 56px),
    repeating-linear-gradient(-60deg, transparent 0 54px, rgba(197, 202, 210, 0.16) 54px 56px);
  opacity: 0.7;
  transform: perspective(1000px) rotateX(68deg) scale(1.6);
  transform-origin: bottom center;
}

.desktop-overlay::after {
  top: 0;
  inset: 0;
  background:
    radial-gradient(circle at 50% 44%, rgba(255, 255, 255, 0.26), transparent 28%),
    radial-gradient(circle at 12% 70%, rgba(255, 179, 92, 0.18), transparent 6%),
    radial-gradient(circle at 88% 75%, rgba(255, 179, 92, 0.14), transparent 6%);
}

.edge-trigger {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 8;
  width: 22px;
}

.side-drawer {
  position: fixed;
  top: 22px;
  left: 18px;
  z-index: 9;
  display: flex;
  flex-direction: column;
  gap: 22px;
  width: 272px;
  min-height: calc(100vh - 44px);
  padding: 24px 20px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 28px;
  background: rgba(8, 21, 38, 0.5);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(18px);
  transform: translateX(calc(-100% - 36px));
  transition: transform 0.3s ease;
}

.edge-trigger:hover + .side-drawer,
.side-drawer:hover,
.side-drawer:focus-within {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.drawer-mark {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(109, 182, 255, 0.9), rgba(153, 206, 255, 0.52));
  color: #06213a;
  font-size: 22px;
  font-weight: 700;
}

.drawer-eyebrow {
  color: rgba(243, 247, 252, 0.58);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.drawer-brand h2 {
  margin-top: 6px;
  font-size: 22px;
  font-weight: 700;
  color: #f5fbff;
}

.drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.drawer-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  padding: 15px 16px;
  border: 1px solid transparent;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  color: #f3f7fc;
  transition:
    transform 0.3s ease,
    background 0.3s ease,
    border-color 0.3s ease,
    box-shadow 0.3s ease;
}

.drawer-item:hover {
  transform: translateX(4px);
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(153, 206, 255, 0.3);
  box-shadow: 0 12px 28px rgba(8, 21, 38, 0.22);
}

.drawer-item.is-active {
  background: linear-gradient(135deg, rgba(109, 182, 255, 0.18), rgba(255, 255, 255, 0.12));
  border-color: rgba(109, 182, 255, 0.34);
}

.drawer-item-label {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.drawer-item-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(243, 247, 252, 0.8);
  font-size: 13px;
  font-weight: 700;
}

.desktop-stage {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 36px;
  transition:
    opacity 0.28s ease,
    transform 0.28s ease,
    visibility 0.28s ease;
}

.desktop-title {
  margin: 0;
  color: #4f555f;
  font-size: clamp(46px, 5vw, 84px);
  font-weight: 700;
  letter-spacing: 0.22em;
  text-align: center;
  text-shadow: 0 10px 22px rgba(255, 255, 255, 0.35);
}

.desktop-shell.is-module-open .desktop-stage {
  opacity: 0;
  visibility: hidden;
  transform: scale(0.985);
}

.desktop-shell.is-module-open .side-drawer {
  opacity: 0;
  pointer-events: none;
}

.module-stage {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0;
  background: rgba(7, 18, 32, 0.12);
  backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  transform: translateX(64px);
  transition:
    opacity 0.32s ease,
    transform 0.32s ease,
    visibility 0.32s ease;
}

.module-stage.is-active {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.module-stage.is-leaving {
  opacity: 0;
  transform: translateX(48px);
}

.module-frame-shell {
  flex: 1;
  overflow: hidden;
  background: #f4f6f8;
}

.module-frame {
  width: 100%;
  height: 100%;
  border: 0;
  background: #ffffff;
}

@media (max-width: 980px) {
  .desktop-stage {
    padding: 24px;
  }

  .desktop-title {
    font-size: clamp(36px, 9vw, 58px);
    letter-spacing: 0.14em;
  }

  .side-drawer {
    width: min(272px, calc(100vw - 36px));
  }
}