/* 东方蓝海中心 · 写字楼访客系统 — 品牌层（配合 Tailwind obc / brand 色板） */

.obc-login-shell {
  background: linear-gradient(165deg, #2a2523 0%, #332d2b 42%, #3a3634 100%);
}

.obc-login-shell::before {
  content: '';
  position: fixed;
  inset: 0;
  background: url('../assets/logo-full.png') 50% 18% / min(280px, 72vw) no-repeat;
  opacity: 0.07;
  filter: blur(14px);
  pointer-events: none;
  z-index: 0;
}

.obc-watermark-light {
  position: relative;
}

.obc-watermark-light::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../assets/logo-full.png') 50% 45% / min(320px, 85vw) no-repeat;
  opacity: 0.055;
  filter: blur(10px);
  pointer-events: none;
  z-index: 0;
}

.obc-watermark-light > * {
  position: relative;
  z-index: 1;
}

.obc-btn-primary {
  border-radius: 0.375rem;
  background: linear-gradient(180deg, #c9ae88 0%, #b0946e 45%, #9a7d5a 100%);
  color: #332d2b;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.2) inset, 0 4px 14px rgba(51, 45, 43, 0.35);
}

.obc-btn-primary:hover {
  filter: brightness(1.05);
}

.obc-btn-primary:active {
  filter: brightness(0.96);
}