/**
 * GravityLink 落地页 / 公开页统一样式
 * 与管理端共享设计令牌（Docs/ui-design-system.md）。
 * 主色由后端通过 <style>:root{--color-primary:...}</style> 注入。
 */

:root {
  --color-primary: #0f766e;
  --color-primary-hover: #0d655e;
  --color-bg-page: #f5f7f8;
  --color-bg-surface: #ffffff;
  --color-border: #dbe3e6;
  --color-text-primary: #17222a;
  --color-text-secondary: #48565e;
  --color-text-tertiary: #7a8990;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-md: 0 4px 12px rgba(15, 28, 34, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 28, 34, 0.12);

  color: var(--color-text-primary);
  background: var(--color-bg-page);
  font-family: Inter, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--color-bg-page);
  -webkit-font-smoothing: antialiased;
}

.landing-page {
  width: min(92vw, 420px);
  padding: 32px 28px;
  text-align: center;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.landing-mark {
  width: 48px;
  height: 48px;
  margin: 0 auto 20px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #14b8a6 0%, var(--color-primary) 100%);
  color: #fff;
  font-weight: 700;
  font-size: 20px;
}

.landing-logo {
  width: 56px;
  height: 56px;
  object-fit: contain;
  margin: 0 auto 16px;
  display: block;
}

.landing-page h1 {
  margin: 0 0 12px;
  font-size: 24px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0;
  color: var(--color-text-primary);
}

.landing-page p {
  margin: 0 0 20px;
  color: var(--color-text-secondary);
  line-height: 1.65;
  font-size: 15px;
}

.landing-page p:last-of-type {
  margin-bottom: 0;
}

.landing-qr {
  display: block;
  width: min(72vw, 260px);
  height: auto;
  margin: 8px auto 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.landing-button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: #ffffff;
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  transition: background 0.15s ease;
  border: 0;
  cursor: pointer;
}

.landing-button:hover {
  background: var(--color-primary-hover);
}

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

.landing-target {
  margin: 0 0 16px;
  padding: 10px 12px;
  background: var(--color-bg-page);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 13px;
  word-break: break-all;
}

.landing-target code {
  color: var(--color-text-secondary);
  font-family: 'SFMono-Regular', Consolas, monospace;
}

.landing-countdown {
  margin: 0 0 16px;
  color: var(--color-text-tertiary);
  font-size: 13px;
}

.landing-status {
  margin-top: 20px;
  color: var(--color-text-tertiary);
  font-size: 13px;
}

.landing-footer {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-tertiary);
  font-size: 13px;
}

.landing-custom {
  text-align: left;
}

.landing-public {
  width: min(92vw, 480px);
}

.gravitylink-footer {
  margin-top: 10px;
  font-size: 12px;
}
.gravitylink-footer a {
  color: var(--color-text-tertiary, #9aa8b0);
  text-decoration: none;
  opacity: 0.7;
  transition: opacity 0.15s;
}
.gravitylink-footer a:hover {
  opacity: 1;
  color: var(--color-primary, #0f766e);
}

@media (max-width: 480px) {
  .landing-page {
    padding: 28px 22px;
  }
  .landing-page h1 {
    font-size: 20px;
  }
}