/* 深蓝之家 — login. */
:root {
  --bg: #0d0a08;
  --surface: #17110d;
  --ink: #f1e6d4;
  --soft: #d8c8b2;
  --muted: #9c8a74;
  --faint: #6f604f;
  --gold: #c9a227;
  --gold-bright: #e7c878;
  --line: rgba(216, 200, 178, 0.1);
  --line-strong: rgba(201, 162, 39, 0.3);
  --serif: "Cormorant Garamond", "Noto Serif SC", "Songti SC", "STSong", "Times New Roman", serif;
  --sans: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", "Cascadia Code", "Consolas", monospace;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  display: grid;
  place-items: center;
  padding: 24px;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 620px at 80% -10%, rgba(126, 73, 35, 0.22), transparent 62%),
    radial-gradient(800px 620px at -10% 90%, rgba(72, 42, 28, 0.2), transparent 65%),
    linear-gradient(168deg, #100c09 0%, #0d0a08 50%, #090706 100%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(255, 244, 222, 0.014) 0 1px, transparent 1px 4px),
    repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.1) 0 1px, transparent 1px 3px);
  opacity: 0.45;
  mix-blend-mode: soft-light;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(1px 1px at 14% 24%, rgba(231, 200, 120, 0.5), transparent 60%),
    radial-gradient(1px 1px at 82% 18%, rgba(231, 200, 120, 0.4), transparent 60%),
    radial-gradient(1px 1px at 66% 78%, rgba(231, 200, 120, 0.22), transparent 60%);
}

.login-shell {
  width: min(460px, 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.login-card {
  width: 100%;
  padding: 34px 34px 26px;
  background:
    linear-gradient(152deg, rgba(34, 25, 19, 0.96), rgba(18, 13, 10, 0.99) 64%),
    radial-gradient(500px 240px at 100% 0%, rgba(201, 162, 39, 0.07), transparent 70%);
  border: 1px solid var(--line);
  border-top-color: var(--line-strong);
  border-radius: 4px;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.5);
  position: relative;
}

.login-card::after {
  content: "";
  position: absolute;
  top: 9px;
  right: 9px;
  width: 15px;
  height: 15px;
  border-top: 1px solid rgba(201, 162, 39, 0.35);
  border-right: 1px solid rgba(201, 162, 39, 0.35);
}

.login-head { display: flex; align-items: center; gap: 14px; }

.login-avatar {
  width: 62px;
  height: 62px;
  flex: 0 0 auto;
  border: 1px solid var(--line-strong);
  border-radius: 17px;
  padding: 3px;
  background: linear-gradient(145deg, rgba(201, 162, 39, 0.15), rgba(10, 9, 8, 0.9));
}

.login-avatar img { width: 100%; height: 100%; display: block; object-fit: cover; border-radius: 13px; }

.kicker {
  margin: 0;
  color: var(--gold);
  font-size: 8px;
  letter-spacing: 0.24em;
}

.login-head h1 {
  margin: 2px 0 0;
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 500;
  letter-spacing: 0.12em;
  line-height: 1.1;
  color: #f8efdf;
}

.sub {
  margin: 3px 0 0;
  color: var(--faint);
  font-size: 8px;
  letter-spacing: 0.17em;
}

.rule {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 24px 0 20px;
  color: rgba(201, 162, 39, 0.38);
  font-size: 12px;
}

.rule::before,
.rule::after {
  content: "";
  height: 1px;
  flex: 1;
  background: linear-gradient(90deg, transparent, rgba(201, 162, 39, 0.32));
}

.rule::after { background: linear-gradient(90deg, rgba(201, 162, 39, 0.32), transparent); }

.lede {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.04em;
  line-height: 2;
}

label {
  display: block;
  color: var(--faint);
  font-size: 9px;
  letter-spacing: 0.16em;
  margin-bottom: 6px;
}

.field { position: relative; }

input {
  width: 100%;
  border: 1px solid var(--line);
  background: #0b0907;
  color: var(--ink);
  padding: 12px 66px 12px 13px;
  font-size: 14px;
  font-family: var(--mono);
  letter-spacing: 0.04em;
  border-radius: 2px;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

input:focus { border-color: rgba(201, 162, 39, 0.5); box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.07); }
input::placeholder { color: #574b3d; font-family: var(--sans); letter-spacing: 0; }

.reveal {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--faint);
  font-size: 9px;
  letter-spacing: 0.08em;
  padding: 6px 8px;
}

.reveal:hover { color: var(--gold-bright); }

.error {
  min-height: 17px;
  margin: 7px 0 0;
  color: #dd928b;
  font-size: 10px;
  letter-spacing: 0.02em;
}

.submit {
  width: 100%;
  margin-top: 10px;
  appearance: none;
  border: 1px solid rgba(201, 162, 39, 0.45);
  background: linear-gradient(135deg, rgba(201, 162, 39, 0.24), rgba(201, 162, 39, 0.07));
  color: var(--gold-bright);
  padding: 12px 16px;
  font-size: 11px;
  letter-spacing: 0.2em;
  border-radius: 2px;
  transition: background 160ms ease, border-color 160ms ease, opacity 160ms ease;
}

.submit:hover { background: linear-gradient(135deg, rgba(201, 162, 39, 0.34), rgba(201, 162, 39, 0.12)); border-color: var(--gold); }
.submit:disabled { opacity: 0.55; cursor: wait; }

.foot {
  margin: 22px 0 0;
  padding-top: 15px;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 8px;
  letter-spacing: 0.08em;
  line-height: 1.9;
}

.aside {
  margin: 0;
  color: var(--faint);
  font-family: var(--serif);
  font-size: 12px;
  font-style: italic;
  letter-spacing: 0.08em;
  opacity: 0.75;
}

@media (max-width: 480px) {
  body { padding: 16px; }
  .login-card { padding: 26px 20px 22px; }
  .login-avatar { width: 54px; height: 54px; border-radius: 15px; }
  .login-head h1 { font-size: 26px; }
  .login-head .sub { display: none; }
  .aside { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.001ms !important; animation-duration: 0.001ms !important; }
}

:focus-visible { outline: 1px solid var(--gold); outline-offset: 3px; }