/* Stable login presentation entry. Keep authentication behavior in assets/index.js. */
.login-page {
  --login-navy: #0b2038;
  --login-navy-deep: #061526;
  --login-cyan: #27b9c7;
  --login-blue: #168bd2;
  background: var(--login-navy-deep);
  grid-template-columns: minmax(0, 54%) minmax(520px, 46%);
  overflow: hidden;
}

.login-panel {
  background:
    radial-gradient(circle at 100% 0, rgba(39, 185, 199, .11), transparent 32%),
    linear-gradient(145deg, #f5f9fc 0%, #fff 54%, #f2f7fb 100%);
  overflow: auto;
  padding: 36px clamp(38px, 4.5vw, 76px) 26px;
}

.login-panel::before {
  background: linear-gradient(180deg, rgba(22, 139, 210, .16), transparent);
  content: "";
  height: 180px;
  pointer-events: none;
  position: absolute;
  right: -1px;
  top: 0;
  width: 1px;
}

.login-brand {
  gap: 14px;
  max-width: 460px;
  position: relative;
  z-index: 3;
}

.login-brand-mark {
  background: linear-gradient(145deg, #173957, #091d34);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(7, 31, 55, .18);
  font-size: 16px;
  height: 46px;
  letter-spacing: .03em;
  width: 46px;
}

.login-brand strong {
  color: #10243b;
  font-size: 21px;
  letter-spacing: -.02em;
}

.login-brand small {
  color: #8291a4;
  font-size: 10px;
  letter-spacing: .045em;
  margin-top: 3px;
}

.login-form {
  background: rgba(255, 255, 255, .94);
  border: 1px solid rgba(144, 168, 193, .27);
  border-radius: 24px;
  box-shadow: 0 28px 70px rgba(13, 43, 70, .13), 0 4px 16px rgba(13, 43, 70, .05);
  margin: clamp(36px, 8vh, 86px) 0 auto;
  max-width: 460px;
  padding: 42px 42px 38px;
}

.login-form::before {
  background: linear-gradient(90deg, var(--login-cyan), var(--login-blue));
  border-radius: 999px;
  content: "";
  height: 4px;
  left: 42px;
  position: absolute;
  top: 0;
  width: 62px;
}

.login-form header { margin-bottom: 32px; }

.login-form h1 {
  color: #0e2239;
  font-size: 30px;
  font-weight: 750;
  letter-spacing: -.035em;
  margin: 0 0 10px;
}

.login-form header p {
  color: #7b8b9f;
  font-size: 15px;
  line-height: 1.6;
}

.login-field { margin-bottom: 19px; }

.login-field > span {
  color: #34475d;
  font-size: 14px;
  font-weight: 650;
  margin-bottom: 9px;
}

.login-field > input,
.captcha-row > input {
  background: #f7f9fc;
  border: 1px solid #d9e3ec;
  border-radius: 12px;
  color: #10243b;
  height: 52px;
  padding: 0 16px;
  transition: background .2s, border-color .2s, box-shadow .2s, transform .2s;
}

.login-field input:hover { border-color: #c4d2de; }

.login-field input:focus {
  background: #fff;
  border-color: #239cb9;
  box-shadow: 0 0 0 4px rgba(35, 156, 185, .12), 0 7px 18px rgba(16, 59, 87, .06);
}

.login-field input::placeholder { color: #a8b4c1; }

.captcha-image {
  background: #f4f8fb;
  border: 1px solid #d9e3ec;
  border-radius: 12px;
  height: 52px;
}

.remember-account {
  color: #64758a;
  font-size: 14px;
  gap: 9px;
  margin: 3px 0 22px;
}

.remember-account input {
  accent-color: #1592bd;
  height: 16px;
  width: 16px;
}

.login-error {
  background: #fff5f4;
  border: 1px solid #f2d1cd;
  border-left: 3px solid #d85353;
  border-radius: 9px;
  margin: -5px 0 18px;
  padding: 11px 13px;
}

.login-submit {
  background: linear-gradient(105deg, #168ac4 0%, #149aa9 100%);
  border: 0;
  border-radius: 12px;
  box-shadow: 0 12px 24px rgba(20, 142, 173, .22);
  font-size: 16px;
  font-weight: 750;
  height: 52px;
  letter-spacing: .08em;
  transition: box-shadow .2s, filter .2s, transform .2s;
}

.login-submit:hover:not(:disabled) {
  background: linear-gradient(105deg, #168ac4 0%, #149aa9 100%);
  border: 0;
  box-shadow: 0 16px 30px rgba(20, 142, 173, .29);
  filter: brightness(1.035);
  transform: translateY(-1px);
}

.login-submit:active:not(:disabled) {
  box-shadow: 0 8px 18px rgba(20, 142, 173, .2);
  transform: translateY(0);
}

.login-submit:focus-visible {
  outline: 3px solid rgba(35, 156, 185, .22);
  outline-offset: 3px;
}

.login-panel > footer {
  color: #8c9bad;
  font-size: 12px;
  letter-spacing: .03em;
  margin-top: 30px;
  max-width: 460px;
  position: relative;
  z-index: 3;
}

.login-visual {
  background:
    radial-gradient(circle at 72% 35%, rgba(39, 185, 199, .19), transparent 25%),
    radial-gradient(circle at 14% 88%, rgba(22, 139, 210, .16), transparent 27%),
    linear-gradient(145deg, #0b233c 0%, #071729 58%, #091d32 100%);
}

.login-visual::before {
  background:
    linear-gradient(rgba(96, 199, 213, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(96, 199, 213, .055) 1px, transparent 1px),
    linear-gradient(120deg, rgba(39, 185, 199, .23), transparent 38%);
  background-size: 52px 52px, 52px 52px, 100% 100%;
  height: auto;
  inset: 0;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .9), transparent 92%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .9), transparent 92%);
  width: auto;
}

.login-visual::after {
  background:
    linear-gradient(180deg, rgba(76, 211, 218, .88), rgba(29, 127, 175, .22)) left 48px bottom 40px / 34px 72px no-repeat,
    linear-gradient(180deg, rgba(76, 211, 218, .76), rgba(29, 127, 175, .18)) left 98px bottom 40px / 34px 112px no-repeat,
    linear-gradient(180deg, rgba(76, 211, 218, .96), rgba(29, 127, 175, .24)) left 148px bottom 40px / 34px 154px no-repeat,
    linear-gradient(180deg, rgba(76, 211, 218, .62), rgba(29, 127, 175, .14)) left 198px bottom 40px / 34px 92px no-repeat,
    repeating-linear-gradient(to bottom, rgba(145, 221, 229, .075) 0 1px, transparent 1px 56px),
    radial-gradient(circle at 76% 28%, rgba(78, 210, 219, .95) 0 5px, rgba(78, 210, 219, .16) 6px 19px, transparent 20px),
    linear-gradient(180deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .025));
  border: 1px solid rgba(139, 222, 229, .2);
  border-radius: 24px;
  bottom: 11%;
  box-shadow: inset 0 1px rgba(255, 255, 255, .12), 0 30px 80px rgba(0, 8, 20, .34);
  content: "";
  height: clamp(220px, 31vw, 390px);
  left: 50%;
  max-height: 40vh;
  max-width: 720px;
  position: absolute;
  transform: translateX(-50%) rotate(-1.2deg);
  width: min(74%, 720px);
}

.login-visual-copy {
  left: clamp(48px, 7vw, 108px);
  top: clamp(56px, 9vh, 94px);
  z-index: 2;
}

.login-visual-copy span {
  color: #68d3da;
  font-size: 13px;
  font-weight: 750;
  letter-spacing: .18em;
  margin-bottom: 14px;
}

.login-visual-copy strong {
  font-size: clamp(32px, 3.1vw, 48px);
  font-weight: 720;
  letter-spacing: -.035em;
  line-height: 1.18;
}

.login-visual-copy::after {
  color: rgba(211, 235, 241, .67);
  content: "商品洞察 · 库存预警 · 经营分析";
  display: block;
  font-size: 15px;
  letter-spacing: .08em;
  margin-top: 19px;
}

@media (max-width: 1100px) {
  .login-page { grid-template-columns: minmax(0, 44%) minmax(500px, 56%); }
  .login-visual-copy { left: 38px; }
  .login-visual-copy strong { font-size: clamp(29px, 3.5vw, 38px); }
  .login-visual::after { width: 78%; }
}

@media (max-width: 760px) {
  .login-page {
    background: #f3f8fb;
    display: block;
    overflow: auto;
  }

  .login-panel {
    min-height: 100svh;
    padding: 24px 22px 20px;
  }

  .login-brand { max-width: 460px; }

  .login-form {
    margin: clamp(38px, 8vh, 72px) 0 auto;
    padding: 38px 32px 34px;
  }

  .login-form::before { left: 32px; }
  .login-panel > footer { margin-top: 24px; }
  .login-visual { display: none; }
}

@media (max-width: 400px) {
  .login-panel {
    padding-left: 16px;
    padding-right: 16px;
  }

  .login-form {
    border-radius: 20px;
    padding: 34px 22px 30px;
  }

  .login-form::before { left: 22px; }
  .login-form h1 { font-size: 27px; }
  .captcha-row { grid-template-columns: minmax(0, 1fr) 108px; }
}

@media (prefers-reduced-motion: reduce) {
  .login-field > input,
  .captcha-row > input,
  .login-submit { transition: none; }
}