:root {
  --bg: #ffffff;
  --text: #1c1c1e;
  --hint: #6d6d72;
  --link: #2481cc;
  --button: #2481cc;
  --button-text: #ffffff;
  --card: #f2f2f7;
  --border: #e2e2e6;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17181a;
    --text: #f5f5f7;
    --hint: #9a9aa1;
    --link: #6ab7ff;
    --button: #2481cc;
    --button-text: #ffffff;
    --card: #232427;
    --border: #313236;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
  padding: env(safe-area-inset-top, 0) 12px env(safe-area-inset-bottom, 12px);
}

#app { max-width: 480px; margin: 0 auto; }

.tabs {
  display: flex;
  gap: 6px;
  padding: 12px 0;
  position: sticky;
  top: env(safe-area-inset-top, 0);
  background: var(--bg);
  z-index: 5;
}

.tab-btn {
  flex: 1;
  padding: 10px 8px;
  border: none;
  border-radius: 10px;
  background: var(--card);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.tab-btn.active {
  background: var(--button);
  color: var(--button-text);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.hidden { display: none !important; }

.state-box {
  text-align: center;
  padding: 32px 16px;
  color: var(--hint);
}

.state-box p { margin: 6px 0; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 12px;
}

.qr-box {
  display: flex;
  justify-content: center;
  padding: 12px 0 16px;
}

.qr-box img, .qr-box canvas { border-radius: 8px; background: #fff; padding: 8px; }

.link-row {
  display: flex;
  gap: 8px;
}

#share-link-input {
  flex: 1;
  min-width: 0;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
}

.btn {
  padding: 10px 14px;
  border-radius: 10px;
  border: none;
  background: var(--button);
  color: var(--button-text);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  text-align: center;
}

.btn-secondary {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-small { padding: 10px 12px; white-space: nowrap; }

.info-grid { display: flex; flex-direction: column; gap: 10px; }

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.info-label { color: var(--hint); font-size: 13px; }
.info-value { font-weight: 600; font-size: 14px; }

.muted { color: var(--hint); font-size: 13px; }
.muted.small { font-size: 12px; margin-top: 16px; }

.platform-switch {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 4px 0 14px;
}

.platform-btn {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 13px;
  white-space: nowrap;
  cursor: pointer;
}

.platform-btn.active {
  background: var(--button);
  color: var(--button-text);
  border-color: var(--button);
}

.app-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 16px;
  margin-bottom: 10px;
}

.app-card h3 { margin: 0 0 4px; font-size: 15px; }
.app-card .note { color: var(--hint); font-size: 12px; margin: 4px 0 10px; }
.app-card .import-hint { font-size: 13px; margin: 10px 0 0; }
.app-card .no-link { color: var(--hint); font-size: 13px; }