/* v45：账神AI 登录 · 美团风明亮紧凑 · 无边框小字按钮 */

:root {
  --ai-bg: #f5f6f8;
  --ai-card: #ffffff;
  --ai-line: #ebebeb;
  --ai-text: #222222;
  --ai-muted: #999999;
  --ai-gold: #ffc300;
  --ai-gold-2: #ffd100;
  --ai-mt: #ff6a00;
  --ai-wx: #07c160;
  --ai-danger: #e02e24;
  --ai-ok: #00b578;
  --ai-radius: 12px;
  --ai-font: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --ai-card-w: 300px;
  --ai-field-h: 38px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: var(--ai-font);
  color: var(--ai-text);
  background:
    radial-gradient(800px 400px at 10% -10%, rgba(255, 195, 0, 0.18), transparent 55%),
    radial-gradient(700px 360px at 100% 0%, rgba(255, 106, 0, 0.1), transparent 50%),
    var(--ai-bg);
}

.ai-login {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px 14px 28px;
}

.ai-brand {
  text-align: center;
  margin-bottom: 12px;
}

.ai-brand h1 {
  margin: 0;
  font-size: clamp(28px, 7vw, 40px);
  font-weight: 900;
  letter-spacing: 0.04em;
  color: #1a1a1a;
  background: linear-gradient(180deg, #333 10%, var(--ai-mt) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.ai-brand .slogan {
  margin: 6px 0 0;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.32em;
  color: #666;
}

.ai-card {
  width: min(var(--ai-card-w), 100%);
  background: var(--ai-card);
  border-radius: var(--ai-radius);
  padding: 14px 12px 12px;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.06);
  border: none;
}

.ai-tabs {
  display: flex;
  gap: 2px;
  margin-bottom: 12px;
}

.ai-tab {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--ai-muted);
  font-size: 13px;
  font-weight: 700;
  padding: 8px 4px;
  cursor: pointer;
  border-radius: 0;
  box-shadow: none;
  min-height: 34px;
}

.ai-tab.is-on {
  color: var(--ai-mt);
  box-shadow: inset 0 -2px 0 var(--ai-gold);
}

.ai-panel {
  display: none;
}

.ai-panel.is-on {
  display: block;
}

.ai-input {
  display: block;
  width: 100%;
  height: var(--ai-field-h);
  border: none;
  border-bottom: 1px solid var(--ai-line);
  border-radius: 0;
  background: transparent;
  color: var(--ai-text);
  padding: 0 2px;
  font-size: 14px;
  outline: none;
  margin: 0 auto 8px;
  box-shadow: none;
}

.ai-input:focus {
  border-bottom-color: var(--ai-mt);
}

.ai-row {
  display: flex;
  gap: 4px;
  align-items: center;
  margin-bottom: 8px;
}

.ai-row .ai-input {
  flex: 1;
  min-width: 0;
  margin-bottom: 0;
}

.ai-chip {
  border: none;
  background: transparent;
  color: var(--ai-mt);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 2px;
  min-height: 32px;
  min-width: 64px;
  cursor: pointer;
  white-space: nowrap;
  box-shadow: none;
  border-radius: 0;
}

.ai-chip:disabled {
  opacity: 0.4;
  cursor: default;
}

.ai-chip--wx {
  color: var(--ai-wx);
}

.ai-agree {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  margin: 6px 0 10px;
  font-size: 11px;
  color: var(--ai-muted);
  line-height: 1.45;
}

.ai-agree input {
  margin-top: 2px;
}

.ai-agree a {
  color: var(--ai-mt);
  text-decoration: none;
}

.ai-btn {
  width: 100%;
  height: 40px;
  border: none;
  border-radius: 20px;
  background: linear-gradient(180deg, var(--ai-gold-2), var(--ai-gold));
  color: #222;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: none;
}

.ai-btn:disabled {
  opacity: 0.45;
  cursor: default;
}

.ai-btn--wx {
  background: transparent;
  color: var(--ai-wx);
  height: 34px;
  font-size: 13px;
  font-weight: 700;
  border-radius: 0;
  margin: 2px 0 4px;
}

.ai-msg {
  min-height: 18px;
  margin: 6px 0 0;
  font-size: 12px;
  color: var(--ai-danger);
  line-height: 1.4;
}

.ai-msg.is-ok {
  color: var(--ai-ok);
}

.ai-qr-wrap {
  text-align: center;
  padding: 2px 0;
}

.ai-qr-wrap img {
  width: 152px;
  height: 152px;
  background: #fff;
  border-radius: 8px;
  padding: 4px;
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.06);
}

.ai-qr-hint {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--ai-muted);
  line-height: 1.45;
}

.ai-demo {
  margin: 0 0 8px;
  padding: 6px 8px;
  border-radius: 8px;
  background: #fff8e6;
  color: #a16207;
  font-size: 12px;
}

.ai-foot {
  margin-top: 14px;
  text-align: center;
  font-size: 11px;
  color: #b0b0b0;
  line-height: 1.65;
}

.ai-scan-box {
  width: min(288px, 100%);
}

.ai-scan-title {
  margin: 0 0 10px;
  font-size: 14px;
  font-weight: 800;
  text-align: center;
  color: #333;
}

.ai-scan-actions {
  display: grid;
  gap: 2px;
  margin-top: 4px;
}

/* v47：老会员直登提示区（无边框、清爽） */
#scanQuick {
  padding: 4px 0 2px;
}

#msgQuick {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ai-ok);
}

@media (max-width: 480px) {
  .ai-login {
    justify-content: flex-start;
    padding-top: 28px;
  }

  .ai-card,
  .ai-scan-box {
    width: min(288px, 90vw);
    padding: 12px 12px 10px;
  }

  .ai-input,
  .ai-row .ai-input {
    height: 36px;
    font-size: 14px;
  }
}