/* landing.css —— 启动过渡页（docs/UI/UX DS-1） */

html, body {
  height: 100%;
}

body.rbot-landing {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background-color: var(--ui-bg);
  background-image: var(--ui-ambient);
  background-attachment: fixed;
  color: var(--ui-text);
}

.landing {
  width: min(360px, calc(100vw - 32px));
  text-align: center;
}

.landing-card {
  padding: 32px 28px 30px;
  border-radius: 24px;
}

.landing-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 68px;
  height: 68px;
  margin: 0 auto 18px;
  border: 1px solid var(--ui-glass-border);
  border-radius: 20px;
  background: linear-gradient(135deg, var(--tblr-gray-800) 0%, var(--tblr-gray-900) 100%);
  box-shadow: var(--ui-shadow-lg);
  color: var(--tblr-white);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  animation: landing-float 2.4s ease-in-out infinite;
}

.landing-logo span {
  color: var(--ui-accent);
}

.landing-title {
  margin: 0;
  color: var(--ui-text);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.landing-status {
  margin: 10px 0 0;
  color: var(--ui-text-2);
  font-size: 14px;
}

.landing-dot {
  color: var(--ui-accent);
  animation: landing-blink 1.2s step-end infinite;
}

.landing-sub {
  margin: 20px 0 0;
  color: var(--ui-text-3);
  font-size: 11.5px;
  letter-spacing: 0.02em;
}

@keyframes landing-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

@keyframes landing-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.15; }
}

@media (prefers-reduced-motion: reduce) {
  .landing-logo, .landing-dot { animation: none; }
}

@media (max-width: 480px) {
  body.rbot-landing { padding: 16px; }
  .landing-card { padding: 28px 22px 26px; }
}