/* 登录页 —— 安静、私密、只留给两个人的入口 */

:root {
  --bg: #f6f1e8;
  --paper: #fffcf7;
  --ink: #3d362e;
  --ink-soft: #5b5247;
  --muted: #91857a;
  --line: rgba(138, 118, 96, 0.22);
  --accent: #9b6b52;
  --serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", Georgia, serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

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

body.login-body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(28px, 6vw, 64px) 18px;
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(900px 620px at 10% -8%, #fdf8f0 0%, rgba(253, 248, 240, 0) 60%),
    radial-gradient(800px 560px at 100% 4%, #efe3d3 0%, rgba(239, 227, 211, 0) 58%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
}

.login-wrap {
  width: min(420px, 100%);
  text-align: center;
}

.login-deco {
  position: relative;
  width: 118px;
  height: 74px;
  margin: 0 auto 26px;
}

.deco-card {
  position: absolute;
  width: 56px;
  height: 66px;
  border-radius: 6px;
  border: 1px solid rgba(138, 118, 96, 0.28);
  background: linear-gradient(160deg, #fffdf8 0%, #f3e8d9 100%);
  box-shadow: 0 10px 26px -16px rgba(91, 72, 55, 0.5);
}

.deco-a {
  left: 18px;
  top: 2px;
  transform: rotate(-8deg);
}

.deco-b {
  left: 46px;
  top: 6px;
  transform: rotate(7deg);
  background: linear-gradient(160deg, #f7eee1 0%, #e7d5c2 100%);
}

.deco-card::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 46%;
  width: 18px;
  height: 18px;
  margin: -9px 0 0 -9px;
  border-radius: 50% 50% 46% 46%;
  background: rgba(155, 107, 82, 0.24);
}

.deco-line {
  position: absolute;
  left: 44px;
  bottom: 0;
  width: 32px;
  height: 1px;
  background: rgba(138, 118, 96, 0.4);
}

.login-eyebrow {
  margin: 0 0 15px;
  font-size: 10px;
  letter-spacing: 0.34em;
  color: var(--muted);
}

.login-title {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(27px, 6vw, 34px);
  font-weight: 500;
  letter-spacing: 0.07em;
  line-height: 1.35;
}

.login-sub {
  margin: 12px 0 0;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.login-card {
  margin-top: 30px;
  padding: clamp(24px, 5vw, 34px) clamp(20px, 5vw, 32px) clamp(20px, 4vw, 28px);
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 252, 247, 0.78);
  box-shadow: 0 26px 60px -38px rgba(91, 72, 55, 0.55);
  text-align: left;
  backdrop-filter: blur(2px);
}

.field {
  display: block;
  margin-bottom: 18px;
}

.field span {
  display: block;
  margin-bottom: 8px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.field input {
  width: 100%;
  height: 46px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: #fffdf9;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  letter-spacing: 0.03em;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field input:focus {
  border-color: rgba(155, 107, 82, 0.55);
  box-shadow: 0 0 0 3px rgba(155, 107, 82, 0.1);
}

.login-error {
  min-height: 20px;
  margin: 0 0 12px;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: #a4553f;
}

.login-button {
  width: 100%;
  min-height: 47px;
  border: 0;
  border-radius: 9px;
  background: #4a3f35;
  color: #fbf5ec;
  font-family: var(--sans);
  font-size: 14px;
  letter-spacing: 0.24em;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.15s ease;
}

.login-button:hover {
  background: #3c332a;
}

.login-button:active {
  transform: translateY(1px);
}

.login-button:disabled {
  cursor: default;
  opacity: 0.62;
}

.login-button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.login-hint {
  margin: 16px 0 0;
  font-size: 11px;
  line-height: 1.8;
  letter-spacing: 0.05em;
  color: #a39587;
  text-align: center;
}

@media (max-width: 380px) {
  .login-card {
    padding: 22px 18px 18px;
  }

  .field input {
    font-size: 16px;
  }
}