Major refactor

ui/src/App.css

@@ -0,0 +1,195 @@
+/* ---- Full-viewport shell ---- */
+.app {
+  display: flex;
+  flex-direction: column;
+  height: 100vh;
+  overflow: hidden;
+}
+
+/* ---- Top header ---- */
+.app-header {
+  flex-shrink: 0;
+  height: 48px;
+  display: flex;
+  align-items: center;
+  gap: 1rem;
+  padding: 0 1rem;
+  background: #1f2937;
+  border-bottom: 1px solid #374151;
+  z-index: 10;
+}
+
+.app-brand {
+  font-size: 1.05rem;
+  font-weight: 700;
+  color: #f9fafb;
+  letter-spacing: 0.08em;
+  white-space: nowrap;
+  margin-right: 0.5rem;
+}
+
+.app-brand span {
+  color: #818cf8;
+}
+
+.app-map-controls {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  flex: 1;
+}
+
+.map-select {
+  background: #111827;
+  border: 1px solid #4b5563;
+  border-radius: 6px;
+  color: #e5e7eb;
+  padding: 0.3rem 0.6rem;
+  font-size: 0.85rem;
+  min-width: 160px;
+  max-width: 280px;
+  outline: none;
+  cursor: pointer;
+}
+
+.map-select:focus {
+  border-color: #6366f1;
+}
+
+.map-select option {
+  background: #1f2937;
+}
+
+.header-btn {
+  background: #374151;
+  border: 1px solid #4b5563;
+  border-radius: 6px;
+  color: #e5e7eb;
+  cursor: pointer;
+  font-size: 0.82rem;
+  padding: 0.3rem 0.65rem;
+  line-height: 1.4;
+  white-space: nowrap;
+  transition: background 0.12s;
+}
+
+.header-btn:hover {
+  background: #4b5563;
+}
+
+.header-btn.danger:hover {
+  background: #7f1d1d;
+  border-color: #ef4444;
+  color: #fca5a5;
+}
+
+.new-map-form {
+  display: flex;
+  gap: 0.3rem;
+  align-items: center;
+}
+
+.new-map-form input {
+  background: #111827;
+  border: 1px solid #6366f1;
+  border-radius: 6px;
+  color: #e5e7eb;
+  padding: 0.3rem 0.6rem;
+  font-size: 0.85rem;
+  width: 160px;
+  outline: none;
+}
+
+.new-map-form button {
+  background: #6366f1;
+  border: none;
+  border-radius: 6px;
+  color: white;
+  cursor: pointer;
+  font-size: 0.82rem;
+  padding: 0.3rem 0.65rem;
+  transition: background 0.12s;
+}
+
+.new-map-form button:hover {
+  background: #4f46e5;
+}
+
+.new-map-form .cancel-btn {
+  background: #374151;
+  border: 1px solid #4b5563;
+}
+
+.new-map-form .cancel-btn:hover {
+  background: #4b5563;
+}
+
+/* ---- Grid area (fills remainder) ---- */
+.app-grid-area {
+  flex: 1;
+  position: relative;
+  overflow: hidden;
+}
+
+/* ── Floating panel stack – bottom-left corner ── */
+.floating-panels-container {
+  position: absolute;
+  bottom: 14px;
+  left: 14px;
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  z-index: 20;
+}
+
+/* ---- No-map placeholder ---- */
+.empty-state {
+  height: 100%;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  gap: 0.75rem;
+  color: #4b5563;
+}
+
+.empty-state p {
+  font-size: 1.1rem;
+}
+
+.empty-state .empty-hint {
+  font-size: 0.85rem;
+  color: #374151;
+}
+
+/* ---- Auth area (right side of header) ---- */
+.app-auth {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  margin-left: auto;
+  flex-shrink: 0;
+}
+
+.app-username {
+  font-size: 0.82rem;
+  color: #9ca3af;
+  white-space: nowrap;
+}
+
+/* ---- Public checkbox in new-map form ---- */
+.new-map-public {
+  display: flex;
+  align-items: center;
+  gap: 0.3rem;
+  font-size: 0.82rem;
+  color: #9ca3af;
+  cursor: pointer;
+  white-space: nowrap;
+  user-select: none;
+}
+
+.new-map-public input[type='checkbox'] {
+  accent-color: #6366f1;
+  cursor: pointer;
+}