:root {
  --bg: #f7f7f8;
  --card: #ffffff;
  --text: #111111;
  --muted: #6b6b76;
  --border: #e8e8ec;
  --accent: #1a73e8;
  --accent-soft: #e8f0fe;
  --success: #0d8a4e;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 4px 12px rgba(0,0,0,.04);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
  min-height: 100%;
}

button, input {
  font: inherit;
}

.app {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  padding: 0 16px calc(24px + var(--safe-bottom));
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(247,247,248,.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 14px 0 10px;
  border-bottom: 1px solid transparent;
}

.topbar-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--muted);
  text-transform: uppercase;
}

.title {
  margin: 2px 0 0;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.meta {
  margin-top: 4px;
  font-size: 13px;
  color: var(--muted);
}

.icon-btn {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 10px;
  padding: 8px 12px;
  cursor: pointer;
  color: var(--text);
  white-space:nowrap;
}
.icon-btn:active { transform: scale(.98); }
.icon-btn.ghost {
  background: transparent;
  border-color: transparent;
  color: var(--accent);
  padding-left: 0;
}

.section {
  margin-top: 18px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-bottom: 12px;
  cursor: pointer;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.card:active { transform: scale(.995); }
.card.highlight {
  border-color: #b8d2fa;
  box-shadow: 0 0 0 3px var(--accent-soft), var(--shadow);
}
.card-label {
  font-size: 17px;
  font-weight: 650;
  letter-spacing: -0.01em;
}
.card-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}
.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: .04em;
  padding: 3px 8px;
  border-radius: 999px;
  background: #eef2f7;
  color: #3a4454;
}
.badge.upcoming { background: #e7f6ee; color: var(--success); }
.badge.current { background: var(--accent-soft); color: var(--accent); }
.badge.past { background: #f0f0f2; color: #777; }
.card-dates { font-size: 14px; color: var(--muted); margin-top: 8px; }
.card-conf { font-size: 13px; color: var(--muted); margin-top: 4px; font-variant-numeric: tabular-nums; }

.empty {
  text-align: center;
  color: var(--muted);
  padding: 40px 12px;
}

/* Detail */
.detail-header .title { font-size: 24px; }
.back-row { margin-bottom: 4px; }

.day-group { margin-top: 22px; }
.day-header {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--muted);
  text-transform: uppercase;
  margin: 0 0 10px 4px;
}

.timeline {
  position: relative;
  padding-left: 0;
}
.event {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 10px;
  box-shadow: var(--shadow);
}
.event-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f2f4f8;
  font-size: 20px;
  line-height: 1;
}
.event.flight .event-icon { background: #eaf2ff; }
.event.hotel .event-icon { background: #f3eefc; }
.event.ground .event-icon { background: #eef8f1; }
.event-time {
  font-size: 13px;
  font-weight: 650;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.event-tz {
  font-weight: 500;
  color: var(--muted);
  margin-left: 4px;
}
.event-title {
  margin-top: 2px;
  font-size: 16px;
  font-weight: 650;
  letter-spacing: -0.01em;
}
.event-sub {
  margin-top: 3px;
  font-size: 13px;
  color: var(--muted);
}
.event-sub + .event-sub { margin-top: 2px; }

/* Login overlay */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.overlay[hidden] { display: none !important; }
.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 24px;
}
.login-card h2 {
  margin: 0 0 6px;
  font-size: 20px;
}
.login-card p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 14px;
}
.primary-btn {
  width: 100%;
  border: none;
  background: var(--accent);
  color: #fff;
  font-weight: 650;
  padding: 12px;
  border-radius: 10px;
  cursor: pointer;
  display: inline-block;
  text-align: center;
  text-decoration: none;
  box-sizing: border-box;
}
.primary-btn:disabled { opacity: .6; cursor: wait; }
.google-btn {
  margin-top: 4px;
}
.user-email {
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
}
.login-error {
  color: #c62828;
  font-size: 13px;
  margin: 0 0 10px;
  min-height: 1.2em;
}

.hidden { display: none !important; }
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  vertical-align: -2px;
  margin-right: 6px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.error-banner {
  background: #fdecea;
  color: #8a1f1f;
  border: 1px solid #f5c6c2;
  border-radius: 10px;
  padding: 10px 12px;
  margin-top: 12px;
  font-size: 14px;
}

/* FlightAware / maps / manual */
.flight-number {
  display: inline-block;
  font-size: 18px;
  font-weight: 750;
  letter-spacing: -0.01em;
  color: var(--accent);
  text-decoration: none;
  font-variant-numeric: tabular-nums;
}
.flight-number:hover { text-decoration: underline; }

.maps-link {
  color: var(--accent);
  text-decoration: none;
  word-break: break-word;
}
.maps-link:hover { text-decoration: underline; }

.event.manual .event-icon { background: #fff6e8; }
.event-actions { margin-top: 8px; }

.add-item-card {
  margin-top: 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}
.add-item-title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
}
.add-item-hint {
  margin: 4px 0 14px;
  font-size: 13px;
  color: var(--muted);
}
.field {
  display: block;
  margin-bottom: 10px;
}
.field span {
  display: block;
  font-size: 12px;
  font-weight: 650;
  color: var(--muted);
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.field input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fafafa;
}
.field input:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}
.add-item-error {
  color: #c62828;
  font-size: 13px;
  margin: 0 0 10px;
}
.add-item-card .primary-btn {
  margin-top: 4px;
}