header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  z-index: 1000;
}

.logo {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--accent);
}
.logo span { color: var(--text); }

.tagline {
  font-size: 12px;
  color: var(--muted);
  font-family: 'DM Mono', monospace;
}

.tab-bar {
  margin-left: auto;
  display: flex;
  gap: 4px;
  background: var(--bg);
  padding: 4px;
  border-radius: 8px;
}
.tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 6px 16px;
  border-radius: 6px;
  border: none;
  background: transparent;
  color: var(--muted);
  font-family: 'Syne', sans-serif;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: all .2s;
}
.tab.active {
  background: var(--surface2);
  color: var(--accent);
}

.main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.sidebar {
  width: 380px;
  flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar-inner {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.sidebar-inner::-webkit-scrollbar { width: 4px; }
.sidebar-inner::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.section {
  display: flex;
  flex-direction: column;
  margin-bottom: 20px;
}
.section-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

.map-container {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

/* ── MOBILE LAYOUT ─────────────────────────────────────── */
@media (max-width: 860px) {
  header {
    flex-wrap: wrap;
    gap: 8px 12px;
    padding: 10px 14px env(safe-area-inset-bottom, 10px);
  }
  .logo { font-size: 18px; }
  .tagline { display: none; }

  .btn-share {
    padding: 8px 12px;
    font-size: 12px;
  }
  #blank-plan-btn {
    margin-left: auto;
  }
  .btn-share-label { display: none; }

  .tab-bar {
    order: 10;
    margin-left: 0;
    width: 100%;
    gap: 4px;
  }
  .tab-mobile-only { display: inline-flex; }
  .tab {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 6px;
    font-size: 12px;
    min-height: 40px;
  }

  .main { flex-direction: column; position: relative; }

  .sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
    flex: 1;
    min-height: 0;
  }
  .sidebar-inner { padding: 14px; gap: 16px; }

  .map-container { display: none; }

  body.view-map .sidebar { display: none; }
  body.view-map .map-container { display: flex; }
}

/* Wider phones / small tablets: keep the same toggle pattern up to 860px */
@media (max-width: 480px) {
  header { padding: 8px 12px; }
  .logo { font-size: 16px; }
  .btn-share { padding: 8px 10px; }
}