diff --git a/source/components/app-nav/app-nav.css b/source/components/app-nav/app-nav.css
new file mode 100644
index 0000000..bcb4c1f
--- /dev/null
+++ b/source/components/app-nav/app-nav.css
@@ -0,0 +1,70 @@
+app-nav {
+  display: block;
+}
+
+app-nav nav {
+  display: flex;
+  align-items: center;
+  gap: 1rem;
+  padding: 0.75rem 1.5rem;
+  background: #222;
+  color: #fff;
+}
+
+app-nav .nav-brand {
+  font-weight: bold;
+  font-size: 1.1rem;
+  margin-right: auto;
+}
+
+app-nav .nav-links {
+  display: flex;
+  gap: 1rem;
+}
+
+app-nav .nav-links a {
+  color: #ccc;
+  text-decoration: none;
+  font-size: 0.9rem;
+}
+
+app-nav .nav-links a:hover {
+  color: #fff;
+}
+
+app-nav .nav-user {
+  display: flex;
+  align-items: center;
+  gap: 0.75rem;
+  margin-left: 1rem;
+  font-size: 0.85rem;
+}
+
+app-nav .nav-user span {
+  color: #aaa;
+}
+
+app-nav button {
+  padding: 0.3rem 0.75rem;
+  border: 1px solid #555;
+  background: transparent;
+  color: #ccc;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 0.8rem;
+}
+
+app-nav button:hover {
+  background: #333;
+  color: #fff;
+}
+
+app-nav .btn-delete {
+  border-color: #733;
+  color: #f99;
+}
+
+app-nav .btn-delete:hover {
+  background: #500;
+  color: #fcc;
+}
diff --git a/source/components/code-panel/code-panel.css b/source/components/code-panel/code-panel.css
new file mode 100644
index 0000000..0a8aaf3
--- /dev/null
+++ b/source/components/code-panel/code-panel.css
@@ -0,0 +1,77 @@
+code-panel {
+  display: flex;
+  flex-direction: column;
+  height: 100%;
+  background: #0f1117;
+}
+
+.cp-toolbar {
+  display: flex;
+  align-items: center;
+  gap: 4px;
+  padding: 6px 8px;
+  background: #13151f;
+  border-bottom: 1px solid #2a2d3a;
+  flex-shrink: 0;
+}
+
+.cp-toolbar button {
+  padding: 2px 8px;
+  background: transparent;
+  border: 1px solid #2a2d3a;
+  border-radius: 3px;
+  color: #666;
+  cursor: pointer;
+  font-size: 0.75rem;
+  font-family: inherit;
+}
+
+.cp-toolbar button:hover:not(:disabled) { color: #aaa; background: #1a1d27; border-color: #444; }
+.cp-toolbar button:disabled { opacity: 0.35; cursor: default; }
+.cp-toolbar button.pinned { color: #7c8cff; border-color: #7c8cff; }
+
+.cp-empty {
+  padding: 20px;
+  color: #555;
+  font-style: italic;
+  font-size: 0.85rem;
+}
+
+.cp-editor {
+  flex: 1;
+  overflow: hidden;
+  position: relative;
+}
+
+.cp-editor .CodeMirror {
+  height: 100%;
+  font-family: "Cascadia Code", "Fira Code", "Consolas", monospace;
+  font-size: 0.875rem;
+  line-height: 1.55;
+}
+
+/* cp-dark theme */
+.cm-s-cp-dark.CodeMirror { background: #0f1117; color: #c8cbde; }
+.cm-s-cp-dark .CodeMirror-gutters { background: #13151f; border-right: 1px solid #2a2d3a; }
+.cm-s-cp-dark .CodeMirror-linenumber { color: #3d4166; }
+.cm-s-cp-dark .CodeMirror-cursor { border-left: 2px solid #7c8cff; }
+.cm-s-cp-dark .CodeMirror-selected { background: #1e2235; }
+.cm-s-cp-dark .CodeMirror-focused .CodeMirror-selected { background: #252a47; }
+.cm-s-cp-dark .CodeMirror-activeline-background { background: #14161f; }
+
+.cm-s-cp-dark .cm-keyword   { color: #c792ea; }
+.cm-s-cp-dark .cm-def       { color: #82aaff; }
+.cm-s-cp-dark .cm-variable  { color: #c8cbde; }
+.cm-s-cp-dark .cm-variable-2{ color: #c8cbde; }
+.cm-s-cp-dark .cm-property  { color: #80cbc4; }
+.cm-s-cp-dark .cm-operator  { color: #89ddff; }
+.cm-s-cp-dark .cm-string    { color: #c3e88d; }
+.cm-s-cp-dark .cm-string-2  { color: #c3e88d; }
+.cm-s-cp-dark .cm-number    { color: #f78c6c; }
+.cm-s-cp-dark .cm-atom      { color: #f78c6c; }
+.cm-s-cp-dark .cm-comment   { color: #546e7a; font-style: italic; }
+.cm-s-cp-dark .cm-tag       { color: #f07178; }
+.cm-s-cp-dark .cm-attribute { color: #ffcb6b; }
+.cm-s-cp-dark .cm-builtin   { color: #82aaff; }
+.cm-s-cp-dark .cm-bracket   { color: #89ddff; }
+.cm-s-cp-dark .cm-error     { color: #f07178; }
diff --git a/source/components/confirm-dialog/confirm-dialog.css b/source/components/confirm-dialog/confirm-dialog.css
new file mode 100644
index 0000000..cae091b
--- /dev/null
+++ b/source/components/confirm-dialog/confirm-dialog.css
@@ -0,0 +1,120 @@
+confirm-dialog {
+  display: flex;
+  position: fixed;
+  inset: 0;
+  align-items: center;
+  justify-content: center;
+  z-index: 1000;
+}
+
+.cd-backdrop {
+  position: absolute;
+  inset: 0;
+  background: rgba(0, 0, 0, 0.55);
+}
+
+.cd-box {
+  position: relative;
+  background: #1a1d27;
+  border: 1px solid #2a2d3a;
+  border-radius: 8px;
+  width: min(420px, 90vw);
+  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
+  overflow: hidden;
+}
+
+.cd-titlebar {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 12px 16px;
+  background: #13151f;
+  border-bottom: 1px solid #2a2d3a;
+}
+
+.cd-icon {
+  font-size: 1rem;
+  flex-shrink: 0;
+}
+
+.cd-title {
+  flex: 1;
+  font-size: 0.95rem;
+  font-weight: 600;
+  color: #e2e4ed;
+}
+
+.cd-close {
+  background: none;
+  border: none;
+  color: #555;
+  cursor: pointer;
+  font-size: 0.85rem;
+  padding: 3px 7px;
+  border-radius: 4px;
+  line-height: 1;
+}
+
+.cd-close:hover {
+  color: #e2e4ed;
+  background: #2a2d3a;
+}
+
+.cd-body {
+  padding: 20px 20px 16px;
+}
+
+.cd-message {
+  color: #c8cbde;
+  font-size: 0.9rem;
+  line-height: 1.6;
+}
+
+.cd-footer {
+  display: flex;
+  justify-content: flex-end;
+  gap: 8px;
+  padding: 12px 16px;
+  border-top: 1px solid #2a2d3a;
+}
+
+.cd-btn {
+  padding: 6px 18px;
+  border-radius: 4px;
+  font-size: 0.85rem;
+  cursor: pointer;
+  border: 1px solid transparent;
+  font-family: inherit;
+}
+
+.cd-btn-cancel {
+  background: transparent;
+  border-color: #2a2d3a;
+  color: #9ba4c7;
+}
+
+.cd-btn-cancel:hover {
+  background: #2a2d3a;
+  color: #e2e4ed;
+}
+
+.cd-btn-confirm {
+  background: #7c8cff;
+  border-color: #7c8cff;
+  color: #fff;
+}
+
+.cd-btn-confirm:hover {
+  background: #6070ee;
+  border-color: #6070ee;
+}
+
+.cd-btn-confirm.cd-btn-danger {
+  background: #c0392b;
+  border-color: #c0392b;
+}
+
+.cd-btn-confirm.cd-btn-danger:hover {
+  background: #e74c3c;
+  border-color: #e74c3c;
+}
diff --git a/source/components/context-menu/context-menu.css b/source/components/context-menu/context-menu.css
new file mode 100644
index 0000000..fe9b59b
--- /dev/null
+++ b/source/components/context-menu/context-menu.css
@@ -0,0 +1,57 @@
+.ctx-menu {
+  display: block;
+  position: fixed;
+  background: #1e1e1e;
+  border: 1px solid #3a3a3a;
+  border-radius: 4px;
+  padding: 4px 0;
+  min-width: 160px;
+  box-shadow: 0 4px 16px rgba(0,0,0,0.5);
+  z-index: 9999;
+  font-size: 13px;
+  font-family: inherit;
+  color: #d4d4d4;
+  user-select: none;
+}
+
+.ctx-entry {
+  display: flex;
+  align-items: center;
+  padding: 5px 12px;
+  cursor: pointer;
+  gap: 8px;
+  white-space: nowrap;
+}
+
+.ctx-entry:hover {
+  background: #2a4a7f;
+}
+
+.ctx-entry-dir {
+  justify-content: space-between;
+}
+
+.ctx-label {
+  flex: 1;
+}
+
+.ctx-arrow {
+  font-size: 9px;
+  opacity: 0.6;
+}
+
+.ctx-readonly {
+  display: block;
+  padding: 5px 12px;
+  color: #888;
+  font-style: italic;
+  white-space: nowrap;
+  cursor: default;
+}
+
+.ctx-separator {
+  display: block;
+  height: 1px;
+  background: #3a3a3a;
+  margin: 4px 0;
+}
diff --git a/source/components/editor-shell/editor-shell.css b/source/components/editor-shell/editor-shell.css
new file mode 100644
index 0000000..52e8cf6
--- /dev/null
+++ b/source/components/editor-shell/editor-shell.css
@@ -0,0 +1,145 @@
+editor-shell {
+  display: flex;
+  flex-direction: column;
+  height: 100vh;
+  overflow: hidden;
+  background: #0f1117;
+  color: #e2e4ed;
+  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
+}
+
+.es-header {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 0 16px;
+  height: 40px;
+  background: #13151f;
+  border-bottom: 1px solid #2a2d3a;
+  flex-shrink: 0;
+}
+
+.es-back {
+  color: #7b7f96;
+  text-decoration: none;
+  font-size: 0.8rem;
+}
+.es-back:hover { color: #e2e4ed; }
+
+.es-title {
+  flex: 1;
+  font-size: 0.9rem;
+  font-weight: 600;
+  color: #c8cbde;
+}
+
+.es-portrait-btns {
+  display: none;
+  gap: 2px;
+}
+
+editor-shell.portrait .es-portrait-btns {
+  display: flex;
+}
+
+.es-pb-btn {
+  padding: 4px 10px;
+  background: transparent;
+  border: 1px solid #2a2d3a;
+  border-radius: 4px;
+  color: #7b7f96;
+  cursor: pointer;
+  font-size: 0.9rem;
+  font-family: inherit;
+}
+.es-pb-btn:hover { background: #1a1d27; color: #c8cbde; }
+.es-pb-btn.active { color: #7c8cff; border-color: #7c8cff; }
+
+/* Workspace */
+.es-workspace {
+  display: flex;
+  flex: 1;
+  min-height: 0;
+  overflow: hidden;
+}
+
+/* Panels */
+.es-panel {
+  display: flex;
+  flex-direction: column;
+  flex: 1;
+  min-width: 0;
+  overflow: hidden;
+}
+
+.es-panel[data-panel="left"]   { flex: 0 0 240px; }
+.es-panel[data-panel="center"] { flex: 1; }
+.es-panel[data-panel="right"]  { flex: 0 0 280px; }
+
+.es-panel-empty {
+  flex: 1;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: #333;
+  font-size: 0.85rem;
+  border: 2px dashed #222;
+  margin: 8px;
+  border-radius: 6px;
+}
+
+.es-panel.es-panel-drop .es-panel-empty {
+  border-color: #7c8cff;
+  color: #7c8cff;
+}
+
+/* Sections within a panel — arranged horizontally */
+.es-sections {
+  display: flex;
+  flex-direction: row;
+  flex: 1;
+  min-height: 0;
+  overflow: hidden;
+}
+
+.es-section {
+  display: flex;
+  flex-direction: column;
+  flex: 1;
+  min-width: 0;
+  min-height: 0;
+  overflow: hidden;
+}
+
+/* Resize handles */
+.es-v-handle {
+  width: 4px;
+  background: #2a2d3a;
+  cursor: col-resize;
+  flex-shrink: 0;
+  transition: background 0.15s;
+}
+.es-v-handle:hover { background: #7c8cff; }
+
+.es-h-handle {
+  height: 4px;
+  background: #2a2d3a;
+  cursor: row-resize;
+  flex-shrink: 0;
+  transition: background 0.15s;
+}
+.es-h-handle:hover { background: #7c8cff; }
+
+/* Portrait overrides */
+editor-shell.portrait .es-workspace {
+  flex-direction: column;
+}
+
+editor-shell.portrait .es-panel {
+  flex: 1 !important;
+  width: 100% !important;
+}
+
+editor-shell.portrait .es-v-handle {
+  display: none;
+}
diff --git a/source/components/file-tree-panel/file-tree-panel.css b/source/components/file-tree-panel/file-tree-panel.css
new file mode 100644
index 0000000..5e4ae5a
--- /dev/null
+++ b/source/components/file-tree-panel/file-tree-panel.css
@@ -0,0 +1,130 @@
+file-tree-panel {
+  display: flex;
+  flex-direction: column;
+  height: 100%;
+  background: #0f1117;
+  color: #c8cbde;
+  font-size: 0.85rem;
+}
+
+.ftp-header {
+  display: flex;
+  align-items: center;
+  gap: 4px;
+  padding: 4px 8px;
+  border-bottom: 1px solid #2a2d3a;
+  flex-shrink: 0;
+}
+
+.ftp-btn {
+  padding: 2px 6px;
+  background: transparent;
+  border: 1px solid #2a2d3a;
+  border-radius: 3px;
+  color: #666;
+  cursor: pointer;
+  font-size: 0.7rem;
+  font-family: inherit;
+}
+
+.ftp-btn:hover { color: #aaa; background: #1a1d27; border-color: #444; }
+
+.ftp-inline-create {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  padding: 8px;
+  background: #13151f;
+  border-bottom: 1px solid #2a2d3a;
+}
+
+.ftp-inline-label {
+  font-size: 0.75rem;
+  color: #666;
+  font-style: italic;
+}
+
+.ftp-rename-input {
+  width: 100%;
+  padding: 4px 6px;
+  background: #0f1117;
+  border: 1px solid #7c8cff;
+  border-radius: 3px;
+  color: #e2e4ed;
+  font-size: 0.85rem;
+  font-family: inherit;
+  outline: none;
+}
+
+.ftp-inline-create .ftp-btn {
+  align-self: flex-start;
+  display: inline-block;
+  margin-right: 4px;
+}
+
+.ftp-tree {
+  flex: 1;
+  overflow-y: auto;
+  padding: 4px 0;
+}
+
+.ftp-list {
+  list-style: none;
+  padding: 0;
+  margin: 0;
+}
+
+.ftp-list .ftp-list {
+  display: none;
+}
+
+.ftp-dir.open > .ftp-list {
+  display: block;
+}
+
+.ftp-dir-label {
+  display: block;
+  padding: 3px 8px 3px calc(8px + var(--depth, 0) * 12px);
+  cursor: pointer;
+  color: #7b7f96;
+}
+
+.ftp-dir-label:hover { color: #c8cbde; }
+
+.ftp-dir.open > .ftp-dir-label { color: #c8cbde; }
+
+.ftp-file {
+  padding: 3px 8px 3px calc(20px + var(--depth, 0) * 12px);
+  cursor: pointer;
+  color: #9ba4c7;
+}
+
+.ftp-file:hover { background: #1a1d27; color: #e2e4ed; }
+.ftp-file.active { background: #1e2235; color: #7c8cff; }
+.ftp-dir-label.active { background: #1e2235; color: #c8cbde; }
+
+.ftp-type-error {
+  padding: 6px 10px;
+  color: #e07070;
+  font-size: 0.8rem;
+  background: #1e1520;
+  border-bottom: 1px solid #3a2a2a;
+}
+
+.ftp-empty {
+  display: block;
+  padding: 12px;
+  color: #555;
+  font-style: italic;
+}
+
+.ftp-up {
+  padding: 4px 8px;
+  cursor: pointer;
+  color: #666;
+  font-size: 0.8rem;
+  font-style: italic;
+  border-bottom: 1px solid #1e2030;
+}
+
+.ftp-up:hover { color: #c8cbde; background: #1a1d27; }
diff --git a/source/components/group-editor/group-editor.css b/source/components/group-editor/group-editor.css
new file mode 100644
index 0000000..a833b12
--- /dev/null
+++ b/source/components/group-editor/group-editor.css
@@ -0,0 +1,109 @@
+group-editor {
+  display: block;
+  max-width: 700px;
+  margin: 2rem auto;
+  padding: 0 1rem;
+}
+
+group-editor h2 {
+  margin-bottom: 1rem;
+}
+
+group-editor .create-form {
+  display: flex;
+  gap: 0.5rem;
+  margin-bottom: 1.5rem;
+}
+
+group-editor .create-form input {
+  flex: 1;
+  padding: 0.5rem;
+  border: 1px solid #ccc;
+  border-radius: 4px;
+  font-size: 1rem;
+}
+
+group-editor .group-list {
+  list-style: none;
+  padding: 0;
+  margin: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 0.75rem;
+}
+
+group-editor .group-list li {
+  border: 1px solid #ddd;
+  border-radius: 6px;
+  overflow: hidden;
+}
+
+group-editor .group-header {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  padding: 0.75rem 1rem;
+  background: #f8f8f8;
+}
+
+group-editor .group-header strong {
+  flex: 1;
+}
+
+group-editor .members-panel {
+  padding: 1rem;
+  border-top: 1px solid #eee;
+}
+
+group-editor .member-list {
+  list-style: none;
+  padding: 0;
+  margin: 0 0 1rem;
+}
+
+group-editor .member-list li {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  padding: 0.4rem 0;
+  border-bottom: 1px solid #f0f0f0;
+}
+
+group-editor .empty {
+  color: #999;
+  font-size: 0.9rem;
+}
+
+group-editor .add-member-form {
+  display: flex;
+  gap: 0.5rem;
+}
+
+group-editor .add-member-form input {
+  width: 80px;
+  padding: 0.4rem;
+  border: 1px solid #ccc;
+  border-radius: 4px;
+}
+
+group-editor button {
+  padding: 0.4rem 0.8rem;
+  border: 1px solid #999;
+  background: #fff;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 0.85rem;
+}
+
+group-editor button:hover {
+  background: #f0f0f0;
+}
+
+group-editor .btn-delete {
+  border-color: #c00;
+  color: #c00;
+}
+
+group-editor .btn-delete:hover {
+  background: #fee;
+}
diff --git a/source/components/html-editor-panel/html-editor-panel.css b/source/components/html-editor-panel/html-editor-panel.css
new file mode 100644
index 0000000..132545d
--- /dev/null
+++ b/source/components/html-editor-panel/html-editor-panel.css
@@ -0,0 +1,52 @@
+html-editor-panel {
+  display: flex;
+  flex-direction: column;
+  height: 100%;
+  background: #0f1117;
+}
+
+.hep-toolbar {
+  display: flex;
+  align-items: center;
+  gap: 4px;
+  padding: 4px 8px;
+  background: #13151f;
+  border-bottom: 1px solid #2a2d3a;
+  flex-shrink: 0;
+}
+
+.hep-toolbar button {
+  padding: 3px 10px;
+  background: transparent;
+  border: 1px solid #2a2d3a;
+  border-radius: 4px;
+  color: #9ba4c7;
+  cursor: pointer;
+  font-size: 0.8rem;
+  font-family: inherit;
+}
+
+.hep-toolbar button:hover:not(:disabled) { background: #1a1d27; color: #e2e4ed; }
+.hep-toolbar button:disabled { opacity: 0.3; cursor: default; }
+
+.hep-save:not(:disabled) { border-color: #7c8cff; color: #7c8cff; }
+.hep-save:not(:disabled):hover { background: #1e2235; }
+
+.hep-pin.pinned { border-color: #f0a050; color: #f0a050; }
+.hep-pin.pinned:hover { background: #1e1a10; }
+
+.hep-empty {
+  flex: 1;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: #555;
+  font-size: 0.9rem;
+}
+
+.hep-frame {
+  flex: 1;
+  border: none;
+  background: #fff;
+  width: 100%;
+}
diff --git a/source/components/login-form/login-form.css b/source/components/login-form/login-form.css
new file mode 100644
index 0000000..ba387aa
--- /dev/null
+++ b/source/components/login-form/login-form.css
@@ -0,0 +1,58 @@
+login-form {
+  display: block;
+  max-width: 360px;
+  margin: 80px auto;
+  padding: 2rem;
+  border: 1px solid #ddd;
+  border-radius: 6px;
+}
+
+login-form form {
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+}
+
+login-form h2 {
+  margin: 0;
+}
+
+login-form label {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  font-size: 0.9rem;
+}
+
+login-form input {
+  padding: 0.5rem;
+  border: 1px solid #ccc;
+  border-radius: 4px;
+  font-size: 1rem;
+}
+
+login-form button {
+  padding: 0.6rem;
+  background: #222;
+  color: #fff;
+  border: none;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 1rem;
+}
+
+login-form button:hover {
+  background: #444;
+}
+
+login-form .error {
+  color: #c00;
+  font-size: 0.85rem;
+  min-height: 1em;
+}
+
+login-form a {
+  text-align: center;
+  font-size: 0.9rem;
+  color: #555;
+}
diff --git a/source/components/project-editor/project-editor.css b/source/components/project-editor/project-editor.css
new file mode 100644
index 0000000..e56db2d
--- /dev/null
+++ b/source/components/project-editor/project-editor.css
@@ -0,0 +1,130 @@
+project-editor {
+  display: block;
+  max-width: 700px;
+  margin: 2rem auto;
+  padding: 0 1rem;
+}
+
+project-editor h2 {
+  margin-bottom: 1rem;
+}
+
+project-editor .create-form {
+  display: flex;
+  gap: 0.5rem;
+  margin-bottom: 1.5rem;
+}
+
+project-editor .create-form input {
+  flex: 1;
+  padding: 0.5rem;
+  border: 1px solid #ccc;
+  border-radius: 4px;
+  font-size: 1rem;
+}
+
+project-editor .project-list {
+  list-style: none;
+  padding: 0;
+  margin: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 0.75rem;
+}
+
+project-editor .project-list li {
+  border: 1px solid #ddd;
+  border-radius: 6px;
+  overflow: hidden;
+}
+
+project-editor .project-header {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  padding: 0.75rem 1rem;
+  background: #f8f8f8;
+}
+
+project-editor .project-header strong {
+  flex: 1;
+}
+
+project-editor .members-panel {
+  padding: 1rem;
+  border-top: 1px solid #eee;
+}
+
+project-editor .member-list {
+  list-style: none;
+  padding: 0;
+  margin: 0 0 1rem;
+}
+
+project-editor .member-list li {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  padding: 0.4rem 0;
+  border-bottom: 1px solid #f0f0f0;
+}
+
+project-editor .empty {
+  color: #999;
+  font-size: 0.9rem;
+}
+
+project-editor .add-member-form {
+  display: flex;
+  gap: 0.5rem;
+  flex-wrap: wrap;
+}
+
+project-editor .add-member-form input {
+  width: 80px;
+  padding: 0.4rem;
+  border: 1px solid #ccc;
+  border-radius: 4px;
+}
+
+project-editor select {
+  padding: 0.4rem;
+  border: 1px solid #ccc;
+  border-radius: 4px;
+  font-size: 0.85rem;
+}
+
+project-editor button {
+  padding: 0.4rem 0.8rem;
+  border: 1px solid #999;
+  background: #fff;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 0.85rem;
+}
+
+project-editor button:hover {
+  background: #f0f0f0;
+}
+
+project-editor .btn-edit {
+  padding: 0.4rem 0.8rem;
+  border: 1px solid #7c8cff;
+  border-radius: 4px;
+  font-size: 0.85rem;
+  color: #7c8cff;
+  text-decoration: none;
+  display: inline-flex;
+  align-items: center;
+}
+
+project-editor .btn-edit:hover { background: #f0f0ff; }
+
+project-editor .btn-delete {
+  border-color: #c00;
+  color: #c00;
+}
+
+project-editor .btn-delete:hover {
+  background: #fee;
+}
diff --git a/source/components/register-form/register-form.css b/source/components/register-form/register-form.css
new file mode 100644
index 0000000..b18346b
--- /dev/null
+++ b/source/components/register-form/register-form.css
@@ -0,0 +1,58 @@
+register-form {
+  display: block;
+  max-width: 360px;
+  margin: 80px auto;
+  padding: 2rem;
+  border: 1px solid #ddd;
+  border-radius: 6px;
+}
+
+register-form form {
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+}
+
+register-form h2 {
+  margin: 0;
+}
+
+register-form label {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  font-size: 0.9rem;
+}
+
+register-form input {
+  padding: 0.5rem;
+  border: 1px solid #ccc;
+  border-radius: 4px;
+  font-size: 1rem;
+}
+
+register-form button {
+  padding: 0.6rem;
+  background: #222;
+  color: #fff;
+  border: none;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 1rem;
+}
+
+register-form button:hover {
+  background: #444;
+}
+
+register-form .error {
+  color: #c00;
+  font-size: 0.85rem;
+  min-height: 1em;
+}
+
+register-form a {
+  text-align: center;
+  font-size: 0.9rem;
+  color: #555;
+}
diff --git a/source/components/rojo-chat-panel/rojo-chat-panel.css b/source/components/rojo-chat-panel/rojo-chat-panel.css
new file mode 100644
index 0000000..794f86c
--- /dev/null
+++ b/source/components/rojo-chat-panel/rojo-chat-panel.css
@@ -0,0 +1,170 @@
+rojo-chat-panel {
+  display: flex;
+  flex-direction: column;
+  height: 100%;
+  background: #0f1117;
+}
+
+/* ── Toolbar ─────────────────────────────────────────────── */
+
+.rcp-toolbar {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 6px 8px;
+  background: #13151f;
+  border-bottom: 1px solid #2a2d3a;
+  flex-shrink: 0;
+}
+
+.rcp-toolbar-icon {
+  width: 32px;
+  height: 32px;
+  background: #1a5fd4;
+  border-radius: 6px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 1.1rem;
+  flex-shrink: 0;
+}
+
+.rcp-toolbar-name {
+  flex: 1;
+  color: #e2e4ed;
+  font-size: 0.95rem;
+}
+
+.rcp-toolbar-btn {
+  width: 32px;
+  height: 32px;
+  background: #1a5fd4;
+  border: none;
+  border-radius: 6px;
+  color: #fff;
+  cursor: pointer;
+  font-size: 1rem;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-shrink: 0;
+}
+
+.rcp-toolbar-btn:hover { background: #1450b0; }
+
+/* ── Chat history ────────────────────────────────────────── */
+
+.rcp-history {
+  flex: 1;
+  overflow-y: auto;
+  padding: 14px 12px;
+  display: flex;
+  flex-direction: column;
+  gap: 14px;
+  background: #08090e;
+}
+
+.rcp-user-bubble {
+  align-self: flex-end;
+  background: #1e2235;
+  color: #dde0f0;
+  padding: 10px 14px;
+  border-radius: 10px;
+  max-width: 80%;
+  white-space: pre-wrap;
+  word-break: break-word;
+  font-size: 0.9rem;
+  line-height: 1.5;
+}
+
+.rcp-assistant-bubble {
+  align-self: flex-start;
+  background: #13151f;
+  color: #c8ccde;
+  padding: 10px 14px;
+  border-radius: 10px;
+  max-width: 85%;
+  font-size: 0.9rem;
+  line-height: 1.6;
+  word-break: break-word;
+}
+
+.rcp-assistant-bubble p { margin: 0 0 0.5em; }
+.rcp-assistant-bubble p:last-child { margin-bottom: 0; }
+.rcp-assistant-bubble ul,
+.rcp-assistant-bubble ol { padding-left: 1.4em; margin: 0 0 0.5em; }
+.rcp-assistant-bubble li { margin: 0.15em 0; }
+.rcp-assistant-bubble strong { color: #e2e4ed; }
+.rcp-assistant-bubble code {
+  background: #1a1d27;
+  padding: 0.1em 0.35em;
+  border-radius: 3px;
+  font-size: 0.85em;
+  font-family: ui-monospace, "Cascadia Code", monospace;
+}
+.rcp-assistant-bubble pre {
+  background: #1a1d27;
+  padding: 10px 12px;
+  border-radius: 6px;
+  overflow-x: auto;
+  margin: 0.5em 0;
+}
+.rcp-assistant-bubble pre code { background: none; padding: 0; }
+
+/* ── Input area ──────────────────────────────────────────── */
+
+.rcp-input-area {
+  display: flex;
+  gap: 8px;
+  align-items: flex-end;
+  padding: 10px;
+  background: #3a1010;
+  border-top: 1px solid #2a2d3a;
+  flex-shrink: 0;
+}
+
+.rcp-input-text {
+  flex: 1;
+  min-height: 4.5em;
+  max-height: 4.5em;
+  overflow-y: auto;
+  background: #1a1520;
+  color: #dde0f0;
+  padding: 8px 10px;
+  border-radius: 8px;
+  font-size: 0.9rem;
+  font-family: inherit;
+  line-height: 1.5;
+  outline: none;
+  word-break: break-word;
+}
+
+.rcp-input-text:empty::before {
+  content: 'Type message…';
+  color: #555;
+  pointer-events: none;
+}
+
+.rcp-input-buttons {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+
+.rcp-input-btn {
+  width: 36px;
+  height: 36px;
+  background: #555;
+  border: none;
+  border-radius: 50%;
+  color: #fff;
+  cursor: pointer;
+  font-size: 1rem;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-shrink: 0;
+}
+
+.rcp-input-btn:hover:not(:disabled) { background: #6a6a6a; }
+.rcp-input-btn:disabled { opacity: 0.35; cursor: default; }
diff --git a/source/components/tab-container/tab-container.css b/source/components/tab-container/tab-container.css
new file mode 100644
index 0000000..7269bf4
--- /dev/null
+++ b/source/components/tab-container/tab-container.css
@@ -0,0 +1,78 @@
+tab-container {
+  display: flex;
+  flex-direction: column;
+  flex: 1;
+  min-height: 0;
+  overflow: hidden;
+  background: #0f1117;
+}
+
+tab-container.tc-drop-target {
+  outline: 2px solid #7c8cff;
+  outline-offset: -2px;
+}
+
+.tc-bar {
+  display: flex;
+  align-items: stretch;
+  background: #13151f;
+  border-bottom: 1px solid #2a2d3a;
+  flex-shrink: 0;
+  min-height: 32px;
+}
+
+.tc-tabs {
+  display: flex;
+  align-items: stretch;
+  flex: 1;
+  overflow-x: auto;
+  scrollbar-width: none;
+}
+
+.tc-tabs::-webkit-scrollbar { display: none; }
+
+.tc-tab {
+  display: flex;
+  align-items: center;
+  gap: 4px;
+  padding: 0 12px;
+  font-size: 0.8rem;
+  color: #7b7f96;
+  cursor: pointer;
+  white-space: nowrap;
+  border-right: 1px solid #2a2d3a;
+  user-select: none;
+}
+
+.tc-tab:hover { color: #c8cbde; background: #1a1d27; }
+.tc-tab.active { color: #e2e4ed; background: #0f1117; border-bottom: 2px solid #7c8cff; }
+.tc-tab[draggable="true"] { cursor: grab; }
+.tc-tab[draggable="true"]:active { cursor: grabbing; }
+
+.dirty-dot { color: #f59e0b; font-size: 0.6rem; }
+
+.tc-menu {
+  padding: 0 10px;
+  background: transparent;
+  border: none;
+  border-left: 1px solid #2a2d3a;
+  color: #555;
+  cursor: pointer;
+  font-size: 1rem;
+  letter-spacing: 0;
+}
+
+.tc-menu:hover { color: #aaa; background: #1a1d27; }
+
+.tc-content {
+  flex: 1;
+  min-height: 0;
+  overflow: hidden;
+  position: relative;
+}
+
+.tc-content > * {
+  position: absolute;
+  inset: 0;
+  overflow: auto;
+}