:root {
  color-scheme: dark;
  --bg: #081017;
  --panel: #0d1922;
  --line: #27404f;
  --ink: #f3f8fb;
  --muted: #91a9b7;
  --primary: #18bdea;
  --danger: #ff6b72;
  --success: #52dc9b;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { width: 100%; min-height: 100%; margin: 0; overflow-x: hidden; background: var(--bg); color: var(--ink); }
body { min-height: 100dvh; }
button, input { font: inherit; }
button, a, input { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }

.login-background,
.login-background-shade { position: fixed; inset: 0; width: 100vw; height: 100dvh; min-height: 100%; }
.login-background { z-index: 0; display: block; object-fit: cover; object-position: center center; background: var(--bg); }
.login-background-shade {
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(circle at 76% 48%, rgba(5, 14, 21, .5) 0 18%, rgba(5, 14, 21, .24) 43%, transparent 68%),
    linear-gradient(90deg, rgba(3, 13, 20, .42) 0%, rgba(3, 13, 20, .26) 46%, rgba(4, 13, 19, .5) 72%, rgba(4, 13, 19, .68) 100%),
    linear-gradient(180deg, rgba(2, 9, 14, .14), rgba(2, 9, 14, .5));
}

.login-shell {
  position: relative;
  z-index: 2;
  width: 100vw;
  min-height: 100dvh;
  display: grid;
  grid-template-columns: minmax(320px, .92fr) minmax(420px, 1.08fr);
  overflow: hidden;
}

.login-intro {
  min-height: 100dvh;
  padding: clamp(28px, 4vw, 64px);
  display: flex;
  flex-direction: column;
  position: relative;
  border: 0;
  background: transparent;
}

.login-intro::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: transparent;
}

.login-brand { position: relative; z-index: 1; display: inline-flex; align-items: center; gap: 12px; width: fit-content; color: var(--ink); text-decoration: none; font-weight: 760; letter-spacing: -.02em; }
.login-brand-mark { width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid rgba(24, 189, 234, .45); border-radius: 12px; color: var(--primary); background: rgba(7, 24, 33, .82); box-shadow: 0 0 28px rgba(24, 189, 234, .12); }
.login-brand svg { width: 24px; fill: none; stroke: currentColor; stroke-width: 1.7; }

.login-intro-copy { position: relative; z-index: 1; margin: auto 0; max-width: 650px; }
.login-eyebrow { color: var(--primary); font-size: 13px; font-weight: 750; letter-spacing: .14em; text-transform: uppercase; }
.login-intro h1 { margin: 20px 0; max-width: 620px; font-size: clamp(42px, 5.2vw, 76px); line-height: 1.04; letter-spacing: -.035em; text-wrap: balance; text-shadow: 0 2px 12px rgba(0, 0, 0, .42); }
.login-intro p { max-width: 600px; color: #a9bfca; font-size: clamp(16px, 1.25vw, 19px); line-height: 1.8; }
.login-intro ul { display: flex; flex-wrap: wrap; gap: 10px; margin: 28px 0 0; padding: 0; list-style: none; }
.login-intro li { padding: 9px 13px; border: 1px solid rgba(91, 139, 162, .38); border-radius: 999px; color: #c1d3dc; font-size: 13px; background: rgba(8, 19, 27, .68); }
.login-intro-foot { position: relative; z-index: 1; margin: 0 !important; font-size: 12px !important; color: #627b89 !important; }

.login-panel { min-height: 100dvh; display: grid; place-items: center; padding: clamp(28px, 7vw, 110px); background: transparent; }
.login-form-wrap { width: min(100%, 460px); }
.login-form-wrap header { margin-bottom: 36px; }
.login-status { display: inline-flex; align-items: center; gap: 9px; min-height: 28px; color: var(--muted); font-size: 12px; }
.login-status i { width: 7px; height: 7px; border-radius: 50%; background: #78909c; box-shadow: 0 0 12px currentColor; }
.login-status.ready { color: var(--success); }
.login-status.ready i { background: currentColor; }
.login-status.failed { color: var(--danger); }
.login-status.failed i { background: currentColor; }
.login-form-wrap h2 { margin: 18px 0 9px; font-size: clamp(28px, 3vw, 38px); letter-spacing: -.045em; }
.login-form-wrap header p, .login-form-wrap footer { margin: 0; color: var(--muted); line-height: 1.7; }

#loginForm { display: grid; gap: 20px; }
#loginForm label { display: grid; gap: 9px; color: #cad7dd; font-size: 13px; font-weight: 650; }
#loginForm input { width: 100%; height: 52px; border: 1px solid var(--line); border-radius: 10px; padding: 0 15px; color: var(--ink); background: #0b171f; transition: border-color .16s, box-shadow .16s; }
#loginForm input:hover { border-color: #3d6071; }
#loginForm input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(24, 189, 234, .1); outline: 0; }
#loginForm input::placeholder { color: #637a87; }
.login-form-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: #718894; font-size: 12px; }
.login-form-meta button { border: 0; padding: 6px 0; color: #a8c1cc; background: transparent; cursor: pointer; }
.login-form-meta button:hover { color: var(--primary); }
.login-error { margin: 0; padding: 11px 13px; border: 1px solid rgba(255, 107, 114, .42); border-radius: 8px; color: #ffb2b6; font-size: 13px; line-height: 1.55; background: rgba(112, 28, 34, .18); }
.login-submit { min-height: 52px; display: flex; align-items: center; justify-content: center; gap: 10px; border: 0; border-radius: 10px; color: #031015; background: var(--primary); font-weight: 780; cursor: pointer; transition: transform .16s, filter .16s, opacity .16s; }
.login-submit:hover { filter: brightness(1.08); transform: translateY(-1px); }
.login-submit:active { transform: translateY(0); }
.login-submit:disabled { opacity: .58; cursor: wait; transform: none; }
.login-submit svg { width: 19px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.login-form-wrap footer { display: flex; justify-content: space-between; gap: 18px; margin-top: 30px; padding-top: 24px; border-top: 1px solid rgba(59, 88, 103, .42); font-size: 12px; }
.login-toast { position: fixed; left: 50%; bottom: 24px; translate: -50% 0; max-width: calc(100vw - 32px); padding: 11px 15px; border: 1px solid var(--line); border-radius: 8px; color: var(--ink); background: #10212b; box-shadow: 0 14px 44px rgba(0,0,0,.35); font-size: 13px; }

@media (max-width: 820px) {
  .login-background-shade { background: linear-gradient(180deg, rgba(3, 15, 23, .46), rgba(5, 13, 19, .68) 48%, rgba(5, 13, 19, .82) 100%); }
  .login-shell { grid-template-columns: 1fr; overflow: visible; }
  .login-intro { min-height: auto; padding: 24px 22px 30px; border: 0; }
  .login-intro-copy { margin: 54px 0 12px; }
  .login-intro h1 { font-size: clamp(36px, 11vw, 52px); }
  .login-intro ul, .login-intro-foot { display: none; }
  .login-panel { min-height: auto; place-items: start stretch; padding: 34px 22px max(34px, env(safe-area-inset-bottom)); background: transparent; }
  .login-form-wrap { margin: 0 auto; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; }
  .login-background { opacity: .72; }
}