:root {
  --bg: #ffffff;
  --bg-soft: #f4f8ff;
  --accent: #6ba8ff;
  --accent-strong: #3f8cff;
  --text: #1f2a44;
  --danger: #ff5d73;
  --warn: #ffb84d;
  --success: #4fc38a;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(180deg, var(--bg), var(--bg-soft));
  color: var(--text);
}

.app {
  max-width: 420px;
  margin: 0 auto;
  min-height: 100vh;
  padding: 16px 16px 90px;
}

.glass {
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(154, 190, 255, 0.35);
  border-radius: 20px;
  box-shadow: 0 8px 20px rgba(93, 127, 179, 0.12);
  padding: 16px;
  margin-bottom: 14px;
}

.btn {
  border: none;
  border-radius: 16px;
  height: 44px;
  padding: 0 14px;
  font-weight: 600;
}

.btn-primary { background: var(--accent-strong); color: white; }
.btn-secondary { background: rgba(255,255,255,0.6); color: var(--text); border: 1px solid #d6e6ff; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip { border-radius: 999px; padding: 6px 10px; font-size: 12px; }
.chip.error { background: #ffe8ec; color: #a62a3a; }
.chip.warning { background: #fff4e1; color: #9a6616; }
.chip.fixed { background: #e8fff2; color: #1c784d; }

.bottom-nav {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: 10px;
  width: min(420px, calc(100% - 16px));
  border-radius: 22px;
  padding: 10px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.bottom-nav a {
  text-decoration: none;
  text-align: center;
  color: var(--text);
  font-size: 12px;
}