diff --git a/apps/web/src/components/features/config-profiles/ConfigProfileEditorPanel.tsx b/apps/web/src/components/features/config-profiles/ConfigProfileEditorPanel.tsx
index 974d99a..e4480d4 100644
--- a/apps/web/src/components/features/config-profiles/ConfigProfileEditorPanel.tsx
+++ b/apps/web/src/components/features/config-profiles/ConfigProfileEditorPanel.tsx
@@ -86,24 +86,24 @@ export const ConfigProfileEditorPanel = ({
   const hasSelection = isCreating || selectedProfile;
 
   return (
-    <div style={{ flex: 1, overflow: "auto", padding: "1.5rem", minWidth: 0 }}>
+    <div className="flex-1 overflow-auto p-5 min-w-0">
       {!hasSelection ? (
-        <div style={{ textAlign: "center", paddingTop: "4rem", color: "var(--muted)" }}>
-          <div style={{ opacity: 0.3, marginBottom: "1rem" }}>
+        <div className="empty-state">
+          <div className="empty-state-icon">
             <Icon name="folder" size="lg" />
           </div>
-          <h3 style={{ margin: "0 0 0.5rem 0", fontWeight: 500 }}>Select a config profile</h3>
-          <p style={{ margin: 0 }}>Choose a profile from the list to edit, or create a new one.</p>
+          <h3>Select a config profile</h3>
+          <p>Choose a profile from the list to edit, or create a new one.</p>
         </div>
       ) : (
-        <div>
-          <div style={{ marginBottom: "1.5rem", display: "flex", justifyContent: "space-between", alignItems: "flex-start" }}>
+        <div className="max-w-form">
+          <div className="row justify-between items-start mb-5">
             <div>
-              <h1 style={{ margin: "0 0 0.5rem 0", fontSize: "1.5rem" }}>
+              <h1 className="m-0 mb-2 text-xl">
                 {isCreating ? "Create Profile" : selectedProfile?.name}
               </h1>
               {!isCreating && selectedProfile && (
-                <p className="muted" style={{ margin: 0 }}>
+                <p className="muted m-0">
                   {selectedProfile.project_id &&
                     `Project: ${projects.find((p) => p.id === selectedProfile.project_id)?.name || selectedProfile.project_id}`}
                   {selectedProfile.project_id && selectedProfile.tool_type_id && " · "}
@@ -113,8 +113,8 @@ export const ConfigProfileEditorPanel = ({
               )}
             </div>
             {!isCreating && selectedProfile && (
-              <div style={{ display: "flex", gap: "0.5rem" }}>
-                <button className="secondary-button" onClick={onPreview} disabled={previewingId === selectedProfile.id}>
+              <div className="row row-sm">
+                <button className="btn btn-secondary" onClick={onPreview} disabled={previewingId === selectedProfile.id}>
                   {previewingId === selectedProfile.id ? (
                     <><Icon name="loading" size="sm" /> Previewing...</>
                   ) : (
@@ -125,16 +125,16 @@ export const ConfigProfileEditorPanel = ({
             )}
           </div>
 
-          {error && <div className="error" style={{ marginBottom: "1rem" }}>{error}</div>}
+          {error && <div className="form-error mb-3">{error}</div>}
 
           {saveStatus === "saved" && (
-            <div style={{ marginBottom: "1rem", padding: "0.75rem 1rem", background: "var(--success-bg, #dcfce7)", color: "var(--success, #166534)", borderRadius: "0.375rem", display: "flex", alignItems: "center", gap: "0.5rem" }}>
+            <div className="alert alert-success mb-3">
               <Icon name="success" size="sm" />
               Profile saved successfully
             </div>
           )}
 
-          <form onSubmit={onSubmit} className="stack" style={{ gap: "1.25rem", maxWidth: "800px" }}>
+          <form onSubmit={onSubmit} className="stack stack-lg">
             <div className="form-group">
               <label htmlFor="profile-name">Name *</label>
               <input id="profile-name" type="text" value={formData.name} onChange={(e) => onFormChange("name", e.target.value)} placeholder="e.g., Development Environment" className="form-input" required />
@@ -145,8 +145,8 @@ export const ConfigProfileEditorPanel = ({
               <input id="profile-description" type="text" value={formData.description || ""} onChange={(e) => onFormChange("description", e.target.value || undefined)} placeholder="Optional description" className="form-input" />
             </div>
 
-            <div className="row" style={{ gap: "1rem" }}>
-              <div className="form-group" style={{ flex: 1 }}>
+            <div className="form-row row-md">
+              <div className="form-group">
                 <label htmlFor="profile-project">Project</label>
                 <select id="profile-project" value={formData.project_id || ""} onChange={(e) => onFormChange("project_id", e.target.value || undefined)} className="form-input">
                   <option value="">None (Global)</option>
@@ -155,7 +155,7 @@ export const ConfigProfileEditorPanel = ({
                   ))}
                 </select>
               </div>
-              <div className="form-group" style={{ flex: 1 }}>
+              <div className="form-group">
                 <label htmlFor="profile-tool">Tool Type</label>
                 <select id="profile-tool" value={formData.tool_type_id || ""} onChange={(e) => onFormChange("tool_type_id", e.target.value || undefined)} className="form-input">
                   <option value="">None</option>
@@ -174,14 +174,14 @@ export const ConfigProfileEditorPanel = ({
             </div>
 
             <div className="form-section">
-              <div style={{ display: "flex", alignItems: "center", justifyContent: "space-between", marginBottom: "0.75rem" }}>
-                <h4 style={{ margin: 0 }}>Includes</h4>
-                <span className="muted" style={{ fontSize: "0.875rem" }}>{includedProfileIds.length} included</span>
+              <div className="row justify-between items-center mb-3">
+                <h4 className="m-0">Includes</h4>
+                <span className="muted text-sm">{includedProfileIds.length} included</span>
               </div>
               {includedProfileIds.length === 0 ? (
-                <p className="muted" style={{ fontSize: "0.875rem", margin: "0 0 0.75rem 0" }}>No profiles included. Add profiles to compose configurations.</p>
+                <p className="muted text-sm m-0 mb-3">No profiles included. Add profiles to compose configurations.</p>
               ) : (
-                <div style={{ marginBottom: "0.75rem" }}>
+                <div className="mb-3">
                   {includedProfileIds.map((profileId, index) => {
                     const profile = getIncludedProfile(profileId);
                     if (!profile) return null;
@@ -193,19 +193,21 @@ export const ConfigProfileEditorPanel = ({
                         onDragOver={(e) => onDragOver(e, index)}
                         onDragLeave={onDragLeave}
                         onDrop={(e) => onDrop(e, index)}
-                        style={{ display: "flex", alignItems: "center", gap: "0.5rem", padding: "0.5rem 0.75rem", background: dragOverIndex === index ? "var(--brand-bg, #e0e7ff)" : "var(--panel)", border: "1px solid var(--border)", borderRadius: "0.375rem", marginBottom: "0.25rem", cursor: "grab", transition: "background 0.15s" }}
+                        className={dragOverIndex === index ? "drag-item drag-item-active" : "drag-item"}
                       >
-                        <span style={{ cursor: "grab", color: "var(--muted)" }}><Icon name="drag" size="sm" /></span>
-                        <span style={{ flex: 1, fontWeight: 500 }}>{profile.name}</span>
+                        <span className="drag-handle"><Icon name="drag" size="sm" /></span>
+                        <span className="flex-1 font-medium truncate">{profile.name}</span>
                         <span className="badge">{getScopeLabel(profile)}</span>
-                        <button type="button" onClick={() => onRemoveInclude(index)} style={{ background: "none", border: "none", color: "var(--danger)", cursor: "pointer", padding: "0.25rem", borderRadius: "0.25rem" }} title="Remove include"><Icon name="delete" size="sm" /></button>
+                        <button type="button" onClick={() => onRemoveInclude(index)} className="delete-btn" title="Remove include">
+                          <Icon name="delete" size="sm" />
+                        </button>
                       </div>
                     );
                   })}
                 </div>
               )}
               {availableProfiles.length > 0 && (
-                <div className="form-group" style={{ marginBottom: 0 }}>
+                <div className="form-group mb-0">
                   <select value="" onChange={(e) => { if (e.target.value) { onAddInclude(e.target.value); e.target.value = ""; } }} className="form-input">
                     <option value="">+ Add Include...</option>
                     {availableProfiles.map((p) => (
@@ -217,11 +219,11 @@ export const ConfigProfileEditorPanel = ({
             </div>
 
             <div className="form-section">
-              <h4 style={{ margin: "0 0 0.75rem 0" }}>Environment Variables</h4>
+              <h4 className="m-0 mb-3">Environment Variables</h4>
               {Object.entries(formData.env_vars || {}).map(([key, value], idx) => (
-                <div key={idx} className="form-row" style={{ gap: "0.5rem", marginBottom: "0.5rem" }}>
-                  <input type="text" value={key} onChange={(e) => onUpdateEnvVar(key, e.target.value, value)} placeholder="VAR_NAME" className="form-input" style={{ flex: 1 }} />
-                  <input type="text" value={value} onChange={(e) => onUpdateEnvVar(key, key, e.target.value)} placeholder="value" className="form-input" style={{ flex: 1 }} />
+                <div key={idx} className="form-row row-sm mb-2">
+                  <input type="text" value={key} onChange={(e) => onUpdateEnvVar(key, e.target.value, value)} placeholder="VAR_NAME" className="form-input" />
+                  <input type="text" value={value} onChange={(e) => onUpdateEnvVar(key, key, e.target.value)} placeholder="value" className="form-input" />
                   <button type="button" className="ghost-button small" onClick={() => onRemoveEnvVar(key)}><Icon name="delete" size="sm" /></button>
                 </div>
               ))}
@@ -229,47 +231,47 @@ export const ConfigProfileEditorPanel = ({
             </div>
 
             <div className="form-section">
-              <h4 style={{ margin: "0 0 0.75rem 0" }}>Runtime Hints</h4>
-              <textarea value={JSON.stringify(formData.runtime_hints || {}, null, 2)} onChange={(e) => { try { const parsed = JSON.parse(e.target.value); onFormChange("runtime_hints", parsed); } catch { /* ignore */ } }} placeholder='{"start_command": "npm start"}' rows={4} className="form-input" style={{ fontFamily: "monospace", fontSize: "0.875rem" }} />
+              <h4 className="m-0 mb-3">Runtime Hints</h4>
+              <textarea value={JSON.stringify(formData.runtime_hints || {}, null, 2)} onChange={(e) => { try { const parsed = JSON.parse(e.target.value); onFormChange("runtime_hints", parsed); } catch { /* ignore */ } }} placeholder='{"start_command": "npm start"}' rows={4} className="form-input font-mono text-sm" />
             </div>
 
             <div className="form-section">
-              <h4 style={{ margin: "0 0 0.5rem 0" }}>Files</h4>
-              <p className="muted" style={{ margin: "0 0 0.75rem 0", fontSize: "0.875rem" }}>Relative paths written to the instance directory. Use Mounts below for absolute container paths.</p>
+              <h4 className="m-0 mb-2">Files</h4>
+              <p className="muted text-sm m-0 mb-3">Relative paths written to the instance directory. Use Mounts below for absolute container paths.</p>
               {Object.entries(formData.files || {}).map(([path, content], idx) => (
-                <div key={idx} className="card" style={{ padding: "0.75rem", marginBottom: "0.5rem" }}>
-                  <div style={{ display: "flex", gap: "0.5rem", marginBottom: "0.5rem" }}>
-                    <input type="text" value={path} onChange={(e) => onUpdateFile(path, e.target.value, content)} placeholder="relative/path/to/file" className="form-input" style={{ flex: 1 }} />
+                <div key={idx} className="card-sm mb-2">
+                  <div className="form-row row-sm mb-2">
+                    <input type="text" value={path} onChange={(e) => onUpdateFile(path, e.target.value, content)} placeholder="relative/path/to/file" className="form-input" />
                     <button type="button" className="ghost-button small" onClick={() => onRemoveFile(path)}><Icon name="delete" size="sm" /></button>
                   </div>
-                  <textarea value={content} onChange={(e) => onUpdateFile(path, path, e.target.value)} placeholder="File content" rows={3} className="form-input" style={{ fontFamily: "monospace", fontSize: "0.875rem" }} />
+                  <textarea value={content} onChange={(e) => onUpdateFile(path, path, e.target.value)} placeholder="File content" rows={3} className="form-input font-mono text-sm" />
                 </div>
               ))}
               <button type="button" className="secondary-button" onClick={onAddFile}><Icon name="add" size="sm" /> Add File</button>
             </div>
 
             <div className="form-section">
-              <h4 style={{ margin: "0 0 0.5rem 0" }}>Mounts</h4>
-              <p className="muted" style={{ margin: "0 0 0.75rem 0", fontSize: "0.875rem" }}>Bind directories into the container at absolute paths. Files are relative to the mount target.</p>
+              <h4 className="m-0 mb-2">Mounts</h4>
+              <p className="muted text-sm m-0 mb-3">Bind directories into the container at absolute paths. Files are relative to the mount target.</p>
               {(formData.mounts || []).map((mount, index) => (
-                <div key={index} className="card" style={{ padding: "1rem", marginBottom: "0.75rem" }}>
-                  <div className="form-row" style={{ gap: "0.5rem", marginBottom: "0.75rem" }}>
-                    <input type="text" value={mount.target} onChange={(e) => onUpdateMount(index, { target: e.target.value })} placeholder="/target/path" className="form-input" style={{ flex: 1 }} />
+                <div key={index} className="card-sm mb-3">
+                  <div className="form-row row-sm mb-3">
+                    <input type="text" value={mount.target} onChange={(e) => onUpdateMount(index, { target: e.target.value })} placeholder="/target/path" className="form-input" />
                     <select value={mount.mode} onChange={(e) => onUpdateMount(index, { mode: e.target.value as "ro" | "rw" })} className="form-input" style={{ width: "120px" }}>
                       <option value="rw">Read/Write</option>
                       <option value="ro">Read-Only</option>
                     </select>
                     <button type="button" className="ghost-button small" onClick={() => onRemoveMount(index)}><Icon name="delete" size="sm" /></button>
                   </div>
-                  <div style={{ marginLeft: "1rem" }}>
+                  <div className="pl-4 border-l-2 stack stack-sm">
                     {Object.entries(mount.files).map(([path, content], idx) => (
-                      <div key={idx} style={{ display: "flex", gap: "0.5rem", marginBottom: "0.5rem" }}>
-                        <input type="text" value={path} onChange={(e) => onUpdateMountFile(index, path, e.target.value, content)} placeholder="relative/path" className="form-input" style={{ flex: 1 }} />
-                        <textarea value={content} onChange={(e) => onUpdateMountFile(index, path, path, e.target.value)} placeholder="File content" rows={2} className="form-input" style={{ flex: 2, fontFamily: "monospace", fontSize: "0.875rem" }} />
+                      <div key={idx} className="form-row row-sm">
+                        <input type="text" value={path} onChange={(e) => onUpdateMountFile(index, path, e.target.value, content)} placeholder="relative/path" className="form-input" />
+                        <textarea value={content} onChange={(e) => onUpdateMountFile(index, path, path, e.target.value)} placeholder="File content" rows={2} className="form-input font-mono text-sm" />
                         <button type="button" className="ghost-button small" onClick={() => onRemoveMountFile(index, path)}><Icon name="delete" size="sm" /></button>
                       </div>
                     ))}
-                    <button type="button" className="secondary-button small" onClick={() => onAddMountFile(index)} style={{ fontSize: "0.875rem" }}><Icon name="add" size="sm" /> Add File to Mount</button>
+                    <button type="button" className="secondary-button small" onClick={() => onAddMountFile(index)}><Icon name="add" size="sm" /> Add File to Mount</button>
                   </div>
                 </div>
               ))}
@@ -280,21 +282,21 @@ export const ConfigProfileEditorPanel = ({
               <GitMountEditor mounts={formData.git_mounts || []} onChange={(git_mounts) => onFormChange("git_mounts", git_mounts)} />
             </div>
 
-            <div className="dialog-actions" style={{ marginTop: "1rem", position: "sticky", bottom: "1rem", background: "var(--surface)", padding: "1rem", borderRadius: "0.5rem", border: "1px solid var(--border)" }}>
-              <button type="submit" disabled={saveStatus === "saving"}>
+            <div className="dialog-actions sticky-footer">
+              <button type="submit" disabled={saveStatus === "saving"} className="btn btn-primary">
                 <Icon name={isCreating ? "add" : "save"} size="sm" />
                 {saveStatus === "saving" ? "Saving..." : isCreating ? "Create Profile" : "Save Changes"}
               </button>
               {(isCreating || saveStatus !== "idle") && (
-                <button type="button" onClick={onReset} className="button-secondary"><Icon name="cancel" size="sm" /> Discard</button>
+                <button type="button" onClick={onReset} className="btn btn-secondary"><Icon name="cancel" size="sm" /> Discard</button>
               )}
             </div>
           </form>
 
           {previewData && (
-            <div className="card stack" style={{ marginTop: "2rem", padding: "1rem" }}>
+            <div className="card stack stack-md mt-6">
               <h3>Resolved Profile Preview</h3>
-              <pre style={{ overflow: "auto", maxHeight: "400px", fontSize: "0.8125rem" }}>{JSON.stringify(previewData, null, 2)}</pre>
+              <pre className="code-block" style={{ maxHeight: "400px" }}>{JSON.stringify(previewData, null, 2)}</pre>
               <button className="secondary-button" onClick={onClosePreview}>Close Preview</button>
             </div>
           )}
diff --git a/apps/web/src/components/features/config-profiles/ConfigProfileListSidebar.tsx b/apps/web/src/components/features/config-profiles/ConfigProfileListSidebar.tsx
index a5fc17c..4889ec6 100644
--- a/apps/web/src/components/features/config-profiles/ConfigProfileListSidebar.tsx
+++ b/apps/web/src/components/features/config-profiles/ConfigProfileListSidebar.tsx
@@ -17,88 +17,38 @@ export const ConfigProfileListSidebar = ({
   onDelete,
 }: Props) => {
   return (
-    <div
-      style={{
-        width: "280px",
-        minWidth: "280px",
-        borderRight: "1px solid var(--border)",
-        display: "flex",
-        flexDirection: "column",
-        background: "var(--panel)",
-      }}
-    >
-      <div style={{ padding: "1rem", borderBottom: "1px solid var(--border)" }}>
-        <h2 style={{ margin: 0, fontSize: "1.125rem" }}>Config Profiles</h2>
-        <p className="muted" style={{ margin: "0.25rem 0 0 0", fontSize: "0.875rem" }}>
+    <div className="sidebar">
+      <div className="sidebar-header">
+        <h2>Config Profiles</h2>
+        <p className="muted">
           {profiles.length} profile{profiles.length !== 1 ? "s" : ""}
         </p>
       </div>
 
-      <div style={{ flex: 1, overflowY: "auto", padding: "0.5rem" }}>
+      <div className="sidebar-list">
         {profiles.map((profile) => (
           <button
             key={profile.id}
             onClick={() => onSelect(profile)}
-            style={{
-              width: "100%",
-              textAlign: "left",
-              padding: "0.75rem 1rem",
-              marginBottom: "0.25rem",
-              borderRadius: "0.375rem",
-              border: "none",
-              background: selectedProfileId === profile.id ? "var(--brand)" : "transparent",
-              color: selectedProfileId === profile.id ? "white" : "var(--ink)",
-              cursor: "pointer",
-              display: "flex",
-              alignItems: "center",
-              gap: "0.75rem",
-              transition: "background 0.15s",
-            }}
-            onMouseEnter={(e) => {
-              if (selectedProfileId !== profile.id) {
-                e.currentTarget.style.background = "#ece7df";
-              }
-            }}
-            onMouseLeave={(e) => {
-              if (selectedProfileId !== profile.id) {
-                e.currentTarget.style.background = "transparent";
-              }
-            }}
+            className={
+              selectedProfileId === profile.id
+                ? "sidebar-item sidebar-item-active"
+                : "sidebar-item"
+            }
           >
-            <div style={{ flex: 1, minWidth: 0 }}>
-              <div
-                style={{
-                  fontWeight: 600,
-                  fontSize: "0.9375rem",
-                  whiteSpace: "nowrap",
-                  overflow: "hidden",
-                  textOverflow: "ellipsis",
-                }}
-              >
+            <div className="sidebar-item-content">
+              <div className="sidebar-item-title">
                 {profile.name}
                 {profile.is_default && (
-                  <span className="badge badge-secondary" style={{ marginLeft: "0.5rem" }}>
-                    default
-                  </span>
+                  <span className="badge badge-secondary ml-2">default</span>
                 )}
                 {profile.includes?.length > 0 && (
-                  <span
-                    className="badge"
-                    style={{
-                      marginLeft: "0.5rem",
-                      background:
-                        selectedProfileId === profile.id
-                          ? "rgba(255,255,255,0.2)"
-                          : undefined,
-                    }}
-                  >
+                  <span className="badge ml-2">
                     {profile.includes.length} include{profile.includes.length !== 1 ? "s" : ""}
                   </span>
                 )}
               </div>
-              <div
-                style={{ fontSize: "0.8125rem", opacity: 0.8, marginTop: "0.125rem" }}
-              >
+              <div className="sidebar-item-subtitle">
                 {profile.project_id && "Project scoped"}
                 {profile.tool_type_id && (profile.project_id ? " + Tool scoped" : "Tool scoped")}
                 {!profile.project_id && !profile.tool_type_id && "Global"}
@@ -109,16 +59,6 @@ export const ConfigProfileListSidebar = ({
                 e.stopPropagation();
                 onDelete(profile.id);
               }}
-              style={{
-                background: "none",
-                border: "none",
-                color: selectedProfileId === profile.id ? "rgba(255,255,255,0.8)" : "var(--muted)",
-                cursor: "pointer",
-                padding: "0.25rem",
-                borderRadius: "0.25rem",
-                flexShrink: 0,
-                opacity: 0,
-              }}
               className="delete-btn"
               title="Delete profile"
             >
@@ -128,33 +68,8 @@ export const ConfigProfileListSidebar = ({
         ))}
       </div>
 
-      <div style={{ padding: "1rem", borderTop: "1px solid var(--border)" }}>
-        <button
-          onClick={onCreate}
-          style={{
-            width: "100%",
-            display: "flex",
-            alignItems: "center",
-            justifyContent: "center",
-            gap: "0.5rem",
-            padding: "0.75rem",
-            borderRadius: "0.5rem",
-            border: "2px dashed var(--border)",
-            background: "transparent",
-            color: "var(--muted)",
-            cursor: "pointer",
-            fontWeight: 600,
-            transition: "all 0.15s",
-          }}
-          onMouseEnter={(e) => {
-            e.currentTarget.style.borderColor = "var(--brand)";
-            e.currentTarget.style.color = "var(--brand)";
-          }}
-          onMouseLeave={(e) => {
-            e.currentTarget.style.borderColor = "var(--border)";
-            e.currentTarget.style.color = "var(--muted)";
-          }}
-        >
+      <div className="sidebar-footer">
+        <button onClick={onCreate} className="sidebar-create-button">
           <Icon name="add" size="sm" /> New Profile
         </button>
       </div>
diff --git a/apps/web/src/components/features/git/git-mount-editor.tsx b/apps/web/src/components/features/git/git-mount-editor.tsx
index 22b5fc3..e927575 100644
--- a/apps/web/src/components/features/git/git-mount-editor.tsx
+++ b/apps/web/src/components/features/git/git-mount-editor.tsx
@@ -70,26 +70,15 @@ export const GitMountEditor = ({
 
 	return (
 		<div className="git-mount-editor">
-			<h4 style={{ margin: "0 0 0.75rem 0" }}>Git Mounts</h4>
-			<p
-				className="muted"
-				style={{ margin: "0 0 0.75rem 0", fontSize: "0.875rem" }}
-			>
+			<h4 className="m-0 mb-2">Git Mounts</h4>
+			<p className="muted text-sm mb-3 m-0">
 				Clone a repository once and mount multiple directories from it.
 			</p>
 
 			{normalizedMounts.length > 0 && (
-				<div
-					className="git-mount-list"
-					style={{
-						display: "flex",
-						flexDirection: "column",
-						gap: "0.75rem",
-						marginBottom: "1rem",
-					}}
-				>
+				<div className="git-mount-list mb-4">
 					{normalizedMounts.map((mount, index) => (
-						<div key={index} className="card" style={{ padding: "1rem" }}>
+						<div key={index} className="card-md">
 							{editingIndex === index ? (
 								<GitMountForm
 									mount={mount}
@@ -98,59 +87,28 @@ export const GitMountEditor = ({
 								/>
 							) : (
 								<div>
-									<div
-										style={{
-											display: "flex",
-											justifyContent: "space-between",
-											alignItems: "flex-start",
-											marginBottom: "0.5rem",
-										}}
-									>
-										<div style={{ flex: 1, minWidth: 0 }}>
-											<div
-												style={{
-													fontWeight: 600,
-													fontSize: "0.9375rem",
-													marginBottom: "0.25rem",
-												}}
-											>
+									<div className="row justify-between items-start mb-2">
+										<div className="min-w-0 flex-1">
+											<div className="font-semibold text-base mb-1">
 												{mount.remote_url}
 												{mount.branch && (
-													<span
-														style={{
-															color: "var(--muted)",
-															fontWeight: 400,
-															marginLeft: "0.5rem",
-														}}
-													>
+													<span className="muted font-normal ml-2">
 														@{mount.branch}
 													</span>
 												)}
 											</div>
-											<div
-												style={{
-													display: "flex",
-													flexDirection: "column",
-													gap: "0.25rem",
-												}}
-											>
+											<div className="stack stack-sm">
 												{mount.mappings?.map((m, mi) => (
 													<div
 														key={mi}
-														style={{
-															fontSize: "0.875rem",
-															color: "var(--muted)",
-															fontFamily: "monospace",
-														}}
+														className="text-sm muted font-mono"
 													>
 														{m.source_path || "."} → {m.target_path}
 													</div>
 												))}
 											</div>
 										</div>
-										<div
-											style={{ display: "flex", gap: "0.25rem", flexShrink: 0 }}
-										>
+										<div className="row row-sm flex-none">
 											<button
 												type="button"
 												className="ghost-button small"
@@ -177,7 +135,7 @@ export const GitMountEditor = ({
 			)}
 
 			{isAdding ? (
-				<div className="card" style={{ padding: "1rem" }}>
+				<div className="card-md">
 					<GitMountForm
 						mount={{
 							remote_url: "",
@@ -359,16 +317,11 @@ const GitMountForm = ({
 	};
 
 	return (
-		<div style={{ display: "flex", flexDirection: "column", gap: "0.75rem" }}>
-			<div
-				className="form-row"
-				style={{ gap: "0.5rem", alignItems: "flex-start" }}
-			>
-				<div style={{ flex: 2 }}>
-					<label style={{ fontSize: "0.875rem", fontWeight: 500 }}>
-						Repository URL
-					</label>
-					<div style={{ display: "flex", gap: "0.5rem" }}>
+		<div className="stack stack-md">
+			<div className="form-row row-sm items-start">
+				<div className="form-group flex-2">
+					<label className="text-sm font-medium">Repository URL</label>
+					<div className="row row-sm">
 						<input
 							type="text"
 							value={remoteUrl}
@@ -385,7 +338,6 @@ const GitMountForm = ({
 							}}
 							placeholder="https://github.com/user/repo.git"
 							className={`form-input ${errors.remote_url ? "error" : ""}`}
-							style={{ flex: 1 }}
 						/>
 						<button
 							type="button"
@@ -401,7 +353,7 @@ const GitMountForm = ({
 						</button>
 					</div>
 					{errors.remote_url && (
-						<span className="error-text">{errors.remote_url}</span>
+						<span className="text-error">{errors.remote_url}</span>
 					)}
 					{validation.status === "valid" && (
 						<span className="validation-status valid">
@@ -409,7 +361,7 @@ const GitMountForm = ({
 							{
 								(validation as Extract<ValidationState, { status: "valid" }>)
 									.branches.length
-							}{" "}
+								}{" "}
 							branches)
 						</span>
 					)}
@@ -434,10 +386,8 @@ const GitMountForm = ({
 						</span>
 					)}
 				</div>
-				<div style={{ flex: 1 }}>
-					<label style={{ fontSize: "0.875rem", fontWeight: 500 }}>
-						Branch
-					</label>
+				<div className="form-group flex-1">
+					<label className="text-sm font-medium">Branch</label>
 					{validation.status === "valid" ? (
 						<select
 							value={branch}
@@ -466,18 +416,14 @@ const GitMountForm = ({
 			</div>
 
 			<div
+				className="stack stack-sm"
 				style={{
 					opacity: isUrlValidated ? 1 : 0.5,
 					pointerEvents: isUrlValidated ? "auto" : "none",
 				}}
 			>
-				<label style={{ fontSize: "0.875rem", fontWeight: 500 }}>
-					Mappings
-				</label>
-				<p
-					className="muted"
-					style={{ margin: "0 0 0.5rem 0", fontSize: "0.8125rem" }}
-				>
+				<label className="text-sm font-medium">Mappings</label>
+				<p className="muted text-sm m-0">
 					Source paths within the repo and where to mount them in the container.
 					{!isUrlValidated && (
 						<span style={{ color: "var(--warning)" }}>
@@ -486,14 +432,11 @@ const GitMountForm = ({
 						</span>
 					)}
 				</p>
-				<div
-					style={{ display: "flex", flexDirection: "column", gap: "0.5rem" }}
-				>
+				<div className="stack stack-sm">
 					{mappings.map((mapping, index) => (
 						<div
 							key={index}
-							className="form-row"
-							style={{ gap: "0.5rem", alignItems: "flex-start" }}
+							className="form-row row-sm items-start"
 						>
 							<input
 								type="text"
@@ -503,17 +446,8 @@ const GitMountForm = ({
 								}
 								placeholder="packages/api"
 								className={`form-input ${errors[`mapping_${index}_source`] ? "error" : ""}`}
-								style={{ flex: 1 }}
 							/>
-							<span
-								style={{
-									padding: "0.5rem 0",
-									color: "var(--muted)",
-									fontSize: "0.875rem",
-								}}
-							>
-								→
-							</span>
+							<span className="text-sm muted py-2">→</span>
 							<input
 								type="text"
 								value={mapping.target_path}
@@ -522,7 +456,6 @@ const GitMountForm = ({
 								}
 								placeholder="/app/api"
 								className={`form-input ${errors[`mapping_${index}_target`] ? "error" : ""}`}
-								style={{ flex: 1 }}
 							/>
 							{mappings.length > 1 && (
 								<button
@@ -535,12 +468,12 @@ const GitMountForm = ({
 								</button>
 							)}
 							{errors[`mapping_${index}_source`] && (
-								<span className="error-text">
+								<span className="text-error">
 									{errors[`mapping_${index}_source`]}
 								</span>
 							)}
 							{errors[`mapping_${index}_target`] && (
-								<span className="error-text">
+								<span className="text-error">
 									{errors[`mapping_${index}_target`]}
 								</span>
 							)}
@@ -551,17 +484,13 @@ const GitMountForm = ({
 					type="button"
 					className="secondary-button small"
 					onClick={addMapping}
-					style={{ marginTop: "0.5rem" }}
 				>
 					<Icon name="add" size="sm" />
 					Add Mapping
 				</button>
 			</div>
 
-			<div
-				className="form-actions"
-				style={{ display: "flex", gap: "0.5rem", marginTop: "0.5rem" }}
-			>
+			<div className="form-actions row-sm mt-2">
 				<button type="button" className="primary-button" onClick={handleSubmit}>
 					Save
 				</button>
diff --git a/apps/web/src/components/features/tool-workshop/ToolTypeEditorPanel.tsx b/apps/web/src/components/features/tool-workshop/ToolTypeEditorPanel.tsx
index 32dbcb9..cf9943f 100644
--- a/apps/web/src/components/features/tool-workshop/ToolTypeEditorPanel.tsx
+++ b/apps/web/src/components/features/tool-workshop/ToolTypeEditorPanel.tsx
@@ -53,35 +53,25 @@ export const ToolTypeEditorPanel = ({
 	const hasSelection = isCreating || selectedToolType;
 
 	return (
-		<div style={{ flex: 1, overflow: "auto", padding: "1.5rem", minWidth: 0 }}>
+		<div className="flex-1 overflow-auto p-5 min-w-0">
 			{!hasSelection ? (
-				<div
-					style={{
-						textAlign: "center",
-						paddingTop: "4rem",
-						color: "var(--muted)",
-					}}
-				>
-					<div style={{ opacity: 0.3, marginBottom: "1rem" }}>
+				<div className="empty-state">
+					<div className="empty-state-icon">
 						<Icon name="code" size="lg" />
 					</div>
-					<h3 style={{ margin: "0 0 0.5rem 0", fontWeight: 500 }}>
-						Select a tool type
-					</h3>
-					<p style={{ margin: 0 }}>
-						Choose a tool from the list to edit, or create a new one.
-					</p>
+					<h3>Select a tool type</h3>
+					<p>Choose a tool from the list to edit, or create a new one.</p>
 				</div>
 			) : (
-				<div>
-					<div style={{ marginBottom: "1.5rem" }}>
-						<h1 style={{ margin: "0 0 0.5rem 0", fontSize: "1.5rem" }}>
+				<div className="max-w-form">
+					<div className="mb-5">
+						<h1 className="m-0 mb-2 text-xl">
 							{isCreating
 								? "Create Tool Type"
 								: selectedToolType?.display_name}
 						</h1>
 						{!isCreating && (
-							<p className="muted" style={{ margin: 0 }}>
+							<p className="muted m-0">
 								{selectedToolType?.name} · {selectedToolType?.definition_type}{" "}
 								·{" "}
 								{selectedToolType?.interface_type === "web"
@@ -91,11 +81,7 @@ export const ToolTypeEditorPanel = ({
 						)}
 					</div>
 
-					<form
-						onSubmit={onSubmit}
-						className="stack"
-						style={{ gap: "1rem", maxWidth: "800px" }}
-					>
+					<form onSubmit={onSubmit} className="stack stack-md">
 						<div className="form-group">
 							<label htmlFor="definition-type">Definition Type</label>
 							<select
@@ -118,8 +104,8 @@ export const ToolTypeEditorPanel = ({
 							</select>
 						</div>
 
-						<div className="row" style={{ gap: "1rem" }}>
-							<div className="form-group" style={{ flex: 1 }}>
+						<div className="form-row row-md">
+							<div className="form-group">
 								<label htmlFor="tool-type-name">Name *</label>
 								<input
 									id="tool-type-name"
@@ -134,7 +120,7 @@ export const ToolTypeEditorPanel = ({
 									required
 								/>
 							</div>
-							<div className="form-group" style={{ flex: 1 }}>
+							<div className="form-group">
 								<label htmlFor="tool-type-display-name">
 									Display Name *
 								</label>
@@ -166,8 +152,8 @@ export const ToolTypeEditorPanel = ({
 							/>
 						</div>
 
-						<div className="row" style={{ gap: "1rem" }}>
-							<div className="form-group" style={{ flex: 1 }}>
+						<div className="form-row row-md">
+							<div className="form-group">
 								<label htmlFor="tool-type-category">Category</label>
 								<input
 									id="tool-type-category"
@@ -180,7 +166,7 @@ export const ToolTypeEditorPanel = ({
 									className="form-input"
 								/>
 							</div>
-							<div className="form-group" style={{ flex: 1 }}>
+							<div className="form-group">
 								<label htmlFor="tool-type-interface">Interface Type</label>
 								<select
 									id="tool-type-interface"
@@ -280,11 +266,7 @@ export const ToolTypeEditorPanel = ({
 											? "version: '3.8'\nservices:\n  app:\n    image: ..."
 											: "FROM node:18\nWORKDIR /app\n..."
 									}
-									className="form-input"
-									style={{
-										fontFamily: "monospace",
-										fontSize: "0.875rem",
-									}}
+									className="form-input font-mono text-sm"
 									required
 								/>
 							</div>
@@ -306,8 +288,8 @@ export const ToolTypeEditorPanel = ({
 							/>
 						</div>
 
-						<div className="row" style={{ gap: "1rem" }}>
-							<div className="form-group" style={{ flex: 1 }}>
+						<div className="form-row row-md">
+							<div className="form-group">
 								<label htmlFor="readiness-timeout">Timeout (seconds)</label>
 								<input
 									id="readiness-timeout"
@@ -319,7 +301,7 @@ export const ToolTypeEditorPanel = ({
 									className="form-input"
 								/>
 							</div>
-							<div className="form-group" style={{ flex: 1 }}>
+							<div className="form-group">
 								<label htmlFor="readiness-interval">
 									Interval (seconds)
 								</label>
@@ -350,8 +332,8 @@ export const ToolTypeEditorPanel = ({
 
 						{toolTypeError && <p className="text-error">{toolTypeError}</p>}
 
-						<div className="dialog-actions" style={{ marginTop: "1rem" }}>
-							<button type="submit">
+						<div className="dialog-actions mt-4">
+							<button type="submit" className="btn btn-primary">
 								<Icon name={isCreating ? "add" : "save"} size="sm" />
 								{isCreating ? "Create Tool Type" : "Save Changes"}
 							</button>
@@ -359,7 +341,7 @@ export const ToolTypeEditorPanel = ({
 								<button
 									type="button"
 									onClick={onReset}
-									className="button-secondary"
+									className="btn btn-secondary"
 								>
 									<Icon name="cancel" size="sm" /> Discard
 								</button>
diff --git a/apps/web/src/components/features/tool-workshop/ToolTypeListSidebar.tsx b/apps/web/src/components/features/tool-workshop/ToolTypeListSidebar.tsx
index 99f0ce1..d4884c3 100644
--- a/apps/web/src/components/features/tool-workshop/ToolTypeListSidebar.tsx
+++ b/apps/web/src/components/features/tool-workshop/ToolTypeListSidebar.tsx
@@ -17,82 +17,28 @@ export const ToolTypeListSidebar = ({
 	onDelete,
 }: ToolTypeListSidebarProps) => {
 	return (
-		<div
-			style={{
-				width: "280px",
-				minWidth: "280px",
-				borderRight: "1px solid var(--border)",
-				display: "flex",
-				flexDirection: "column",
-				background: "var(--panel)",
-			}}
-		>
-			<div
-				style={{ padding: "1rem", borderBottom: "1px solid var(--border)" }}
-			>
-				<h2 style={{ margin: 0, fontSize: "1.125rem" }}>Tool Workshop</h2>
-				<p
-					className="muted"
-					style={{ margin: "0.25rem 0 0 0", fontSize: "0.875rem" }}
-				>
+		<div className="sidebar">
+			<div className="sidebar-header">
+				<h2>Tool Workshop</h2>
+				<p className="muted">
 					{toolTypes.length} tool type{toolTypes.length !== 1 ? "s" : ""}
 				</p>
 			</div>
 
-			<div style={{ flex: 1, overflowY: "auto", padding: "0.5rem" }}>
+			<div className="sidebar-list">
 				{toolTypes.map((toolType) => (
 					<button
 						key={toolType.id}
 						onClick={() => onSelect(toolType)}
-						style={{
-							width: "100%",
-							textAlign: "left",
-							padding: "0.75rem 1rem",
-							marginBottom: "0.25rem",
-							borderRadius: "0.375rem",
-							border: "none",
-							background:
-								selectedToolTypeId === toolType.id
-									? "var(--brand)"
-									: "transparent",
-							color:
-								selectedToolTypeId === toolType.id ? "white" : "var(--ink)",
-							cursor: "pointer",
-							display: "flex",
-							alignItems: "center",
-							gap: "0.75rem",
-							transition: "background 0.15s",
-						}}
-						onMouseEnter={(e) => {
-							if (selectedToolTypeId !== toolType.id) {
-								e.currentTarget.style.background = "#ece7df";
-							}
-						}}
-						onMouseLeave={(e) => {
-							if (selectedToolTypeId !== toolType.id) {
-								e.currentTarget.style.background = "transparent";
-							}
-						}}
+						className={
+							selectedToolTypeId === toolType.id
+								? "sidebar-item sidebar-item-active"
+								: "sidebar-item"
+						}
 					>
-						<div style={{ flex: 1, minWidth: 0 }}>
-							<div
-								style={{
-									fontWeight: 600,
-									fontSize: "0.9375rem",
-									whiteSpace: "nowrap",
-									overflow: "hidden",
-									textOverflow: "ellipsis",
-								}}
-							>
-								{toolType.display_name}
-							</div>
-							<div
-								style={{
-									fontSize: "0.8125rem",
-									opacity: 0.8,
-									marginTop: "0.125rem",
-								}}
-							>
+						<div className="sidebar-item-content">
+							<div className="sidebar-item-title">{toolType.display_name}</div>
+							<div className="sidebar-item-subtitle">
 								{toolType.category || "Uncategorized"} ·{" "}
 								{toolType.interface_type === "web"
 									? `Port ${toolType.default_port}`
@@ -104,19 +50,6 @@ export const ToolTypeListSidebar = ({
 								e.stopPropagation();
 								onDelete(toolType.id);
 							}}
-							style={{
-								background: "none",
-								border: "none",
-								color:
-									selectedToolTypeId === toolType.id
-										? "rgba(255,255,255,0.8)"
-										: "var(--muted)",
-								cursor: "pointer",
-								padding: "0.25rem",
-								borderRadius: "0.25rem",
-								flexShrink: 0,
-								opacity: 0,
-							}}
 							className="delete-btn"
 							title="Delete tool type"
 						>
@@ -126,33 +59,8 @@ export const ToolTypeListSidebar = ({
 				))}
 			</div>
 
-			<div style={{ padding: "1rem", borderTop: "1px solid var(--border)" }}>
-				<button
-					onClick={onCreate}
-					style={{
-						width: "100%",
-						display: "flex",
-						alignItems: "center",
-						justifyContent: "center",
-						gap: "0.5rem",
-						padding: "0.75rem",
-						borderRadius: "0.5rem",
-						border: "2px dashed var(--border)",
-						background: "transparent",
-						color: "var(--muted)",
-						cursor: "pointer",
-						fontWeight: 600,
-						transition: "all 0.15s",
-					}}
-					onMouseEnter={(e) => {
-						e.currentTarget.style.borderColor = "var(--brand)";
-						e.currentTarget.style.color = "var(--brand)";
-					}}
-					onMouseLeave={(e) => {
-						e.currentTarget.style.borderColor = "var(--border)";
-						e.currentTarget.style.color = "var(--muted)";
-					}}
-				>
+			<div className="sidebar-footer">
+				<button onClick={onCreate} className="sidebar-create-button">
 					<Icon name="add" size="sm" /> New Tool Type
 				</button>
 			</div>
diff --git a/apps/web/src/components/features/tool/manifest-editor.tsx b/apps/web/src/components/features/tool/manifest-editor.tsx
index 7efeb43..f0472d8 100644
--- a/apps/web/src/components/features/tool/manifest-editor.tsx
+++ b/apps/web/src/components/features/tool/manifest-editor.tsx
@@ -284,12 +284,12 @@ export const ManifestEditor = ({
 	};
 
 	return (
-		<div className="stack" style={{ gap: "1.5rem" }}>
+		<div className="stack stack-lg">
 			{/* Base Image */}
-			<div className="card stack" style={{ gap: "1rem", padding: "1rem" }}>
-				<h4 style={{ margin: 0 }}>Base Image</h4>
-				<div className="row" style={{ gap: "1rem" }}>
-					<div className="form-group" style={{ flex: 1 }}>
+			<div className="card-md stack stack-md">
+				<h4 className="m-0">Base Image</h4>
+				<div className="form-row row-md">
+					<div className="form-group">
 						<label>Base Definition</label>
 						<select
 							value={baseDefinitionId}
@@ -307,7 +307,7 @@ export const ManifestEditor = ({
 							))}
 						</select>
 					</div>
-					<div className="form-group" style={{ flex: 1 }}>
+					<div className="form-group">
 						<label>Custom Base Image</label>
 						<input
 							type="text"
@@ -325,8 +325,8 @@ export const ManifestEditor = ({
 			</div>
 
 			{/* Packages */}
-			<div className="card stack" style={{ gap: "1rem", padding: "1rem" }}>
-				<h4 style={{ margin: 0 }}>Packages</h4>
+			<div className="card-md stack stack-md">
+				<h4 className="m-0">Packages</h4>
 
 				<div className="form-group">
 					<label>Node.js Version</label>
@@ -342,9 +342,9 @@ export const ManifestEditor = ({
 
 				<div>
 					<label>APT Packages</label>
-					<div className="stack" style={{ gap: "0.5rem", marginTop: "0.5rem" }}>
+					<div className="stack stack-sm mt-2">
 						{aptPackages.map((pkg, idx) => (
-							<div key={idx} className="row" style={{ gap: "0.5rem" }}>
+							<div key={idx} className="form-row row-sm">
 								<input
 									type="text"
 									value={pkg.name}
@@ -365,8 +365,7 @@ export const ManifestEditor = ({
 						<button
 							type="button"
 							onClick={addAptPackage}
-							className="button-secondary"
-							style={{ width: "fit-content" }}
+							className="button-secondary w-fit"
 						>
 							<Icon name="add" size="sm" /> Add APT Package
 						</button>
@@ -375,9 +374,9 @@ export const ManifestEditor = ({
 
 				<div>
 					<label>NPM Global Packages</label>
-					<div className="stack" style={{ gap: "0.5rem", marginTop: "0.5rem" }}>
+					<div className="stack stack-sm mt-2">
 						{npmPackages.map((pkg, idx) => (
-							<div key={idx} className="row" style={{ gap: "0.5rem" }}>
+							<div key={idx} className="form-row row-sm">
 								<input
 									type="text"
 									value={pkg.name}
@@ -398,8 +397,7 @@ export const ManifestEditor = ({
 						<button
 							type="button"
 							onClick={addNpmPackage}
-							className="button-secondary"
-							style={{ width: "fit-content" }}
+							className="button-secondary w-fit"
 						>
 							<Icon name="add" size="sm" /> Add NPM Package
 						</button>
@@ -408,9 +406,9 @@ export const ManifestEditor = ({
 
 				<div>
 					<label>Pip Packages</label>
-					<div className="stack" style={{ gap: "0.5rem", marginTop: "0.5rem" }}>
+					<div className="stack stack-sm mt-2">
 						{pipPackages.map((pkg, idx) => (
-							<div key={idx} className="row" style={{ gap: "0.5rem" }}>
+							<div key={idx} className="form-row row-sm">
 								<input
 									type="text"
 									value={pkg.name}
@@ -431,8 +429,7 @@ export const ManifestEditor = ({
 						<button
 							type="button"
 							onClick={addPipPackage}
-							className="button-secondary"
-							style={{ width: "fit-content" }}
+							className="button-secondary w-fit"
 						>
 							<Icon name="add" size="sm" /> Add Pip Package
 						</button>
@@ -441,10 +438,10 @@ export const ManifestEditor = ({
 			</div>
 
 			{/* Runtime User */}
-			<div className="card stack" style={{ gap: "1rem", padding: "1rem" }}>
-				<h4 style={{ margin: 0 }}>Runtime User</h4>
-				<div className="row" style={{ gap: "1rem" }}>
-					<div className="form-group" style={{ flex: 1 }}>
+			<div className="card-md stack stack-md">
+				<h4 className="m-0">Runtime User</h4>
+				<div className="form-row row-md">
+					<div className="form-group">
 						<label>User Name</label>
 						<input
 							type="text"
@@ -453,7 +450,7 @@ export const ManifestEditor = ({
 							className="form-input"
 						/>
 					</div>
-					<div className="form-group" style={{ flex: 1 }}>
+					<div className="form-group">
 						<label>UID</label>
 						<input
 							type="number"
@@ -462,7 +459,7 @@ export const ManifestEditor = ({
 							className="form-input"
 						/>
 					</div>
-					<div className="form-group" style={{ flex: 1 }}>
+					<div className="form-group">
 						<label>GID</label>
 						<input
 							type="number"
@@ -475,11 +472,11 @@ export const ManifestEditor = ({
 			</div>
 
 			{/* Environment */}
-			<div className="card stack" style={{ gap: "1rem", padding: "1rem" }}>
-				<h4 style={{ margin: 0 }}>Environment Variables</h4>
-				<div className="stack" style={{ gap: "0.5rem" }}>
+			<div className="card-md stack stack-md">
+				<h4 className="m-0">Environment Variables</h4>
+				<div className="stack stack-sm">
 					{envVars.map((ev, idx) => (
-						<div key={idx} className="row" style={{ gap: "0.5rem" }}>
+						<div key={idx} className="form-row row-sm">
 							<input
 								type="text"
 								value={ev.key}
@@ -507,8 +504,7 @@ export const ManifestEditor = ({
 					<button
 						type="button"
 						onClick={addEnvVar}
-						className="button-secondary"
-						style={{ width: "fit-content" }}
+						className="button-secondary w-fit"
 					>
 						<Icon name="add" size="sm" /> Add Env Var
 					</button>
@@ -516,26 +512,20 @@ export const ManifestEditor = ({
 			</div>
 
 			{/* Build Scripts */}
-			<div className="card stack" style={{ gap: "1rem", padding: "1rem" }}>
-				<h4 style={{ margin: 0 }}>Build Scripts (run during docker build)</h4>
-				<div className="stack" style={{ gap: "0.5rem" }}>
+			<div className="card-md stack stack-md">
+				<h4 className="m-0">Build Scripts (run during docker build)</h4>
+				<div className="stack stack-sm">
 					{buildScripts.map((script, idx) => (
 						<div
 							key={idx}
-							className="row"
-							style={{ gap: "0.5rem", alignItems: "flex-start" }}
+							className="form-row row-sm items-start"
 						>
 							<textarea
 								value={script}
 								onChange={(e) => updateBuildScript(idx, e.target.value)}
 								placeholder="git config --global user.email 'dev@example.com'"
-								className="form-input"
+								className="form-input font-mono text-sm flex-1"
 								rows={2}
-								style={{
-									fontFamily: "monospace",
-									fontSize: "0.8125rem",
-									flex: 1,
-								}}
 							/>
 							<button
 								type="button"
@@ -550,8 +540,7 @@ export const ManifestEditor = ({
 					<button
 						type="button"
 						onClick={addBuildScript}
-						className="button-secondary"
-						style={{ width: "fit-content" }}
+						className="button-secondary w-fit"
 					>
 						<Icon name="add" size="sm" /> Add Build Script
 					</button>
@@ -559,28 +548,22 @@ export const ManifestEditor = ({
 			</div>
 
 			{/* Startup Scripts */}
-			<div className="card stack" style={{ gap: "1rem", padding: "1rem" }}>
-				<h4 style={{ margin: 0 }}>
+			<div className="card-md stack stack-md">
+				<h4 className="m-0">
 					Startup Scripts (run when container starts)
 				</h4>
-				<div className="stack" style={{ gap: "0.5rem" }}>
+				<div className="stack stack-sm">
 					{startupScripts.map((script, idx) => (
 						<div
 							key={idx}
-							className="row"
-							style={{ gap: "0.5rem", alignItems: "flex-start" }}
+							className="form-row row-sm items-start"
 						>
 							<textarea
 								value={script}
 								onChange={(e) => updateStartupScript(idx, e.target.value)}
 								placeholder="chown -R user:user /workspace"
-								className="form-input"
+								className="form-input font-mono text-sm flex-1"
 								rows={2}
-								style={{
-									fontFamily: "monospace",
-									fontSize: "0.8125rem",
-									flex: 1,
-								}}
 							/>
 							<button
 								type="button"
@@ -595,8 +578,7 @@ export const ManifestEditor = ({
 					<button
 						type="button"
 						onClick={addStartupScript}
-						className="button-secondary"
-						style={{ width: "fit-content" }}
+						className="button-secondary w-fit"
 					>
 						<Icon name="add" size="sm" /> Add Startup Script
 					</button>
@@ -604,21 +586,15 @@ export const ManifestEditor = ({
 			</div>
 
 			{/* Mounts */}
-			<div className="card stack" style={{ gap: "1rem", padding: "1rem" }}>
-				<h4 style={{ margin: 0 }}>Mount Schema</h4>
-				<div className="stack" style={{ gap: "1rem" }}>
+			<div className="card-md stack stack-md">
+				<h4 className="m-0">Mount Schema</h4>
+				<div className="stack stack-md">
 					{mounts.map((mount, idx) => (
 						<div
 							key={idx}
-							className="stack"
-							style={{
-								gap: "0.5rem",
-								padding: "0.75rem",
-								border: "1px solid var(--border)",
-								borderRadius: "0.375rem",
-							}}
+							className="stack stack-sm p-3 border rounded-md"
 						>
-							<div className="row" style={{ gap: "0.5rem" }}>
+							<div className="form-row row-sm">
 								<input
 									type="text"
 									value={mount.name}
@@ -655,15 +631,8 @@ export const ManifestEditor = ({
 									<Icon name="delete" size="sm" />
 								</button>
 							</div>
-							<div className="row" style={{ gap: "0.5rem" }}>
-								<label
-									style={{
-										display: "flex",
-										alignItems: "center",
-										gap: "0.25rem",
-										fontSize: "0.875rem",
-									}}
-								>
+							<div className="form-row row-sm flex-wrap">
+								<label className="checkbox-label text-sm min-h-0">
 									<input
 										type="checkbox"
 										checked={mount.writable}
@@ -673,14 +642,7 @@ export const ManifestEditor = ({
 									/>
 									Writable
 								</label>
-								<label
-									style={{
-										display: "flex",
-										alignItems: "center",
-										gap: "0.25rem",
-										fontSize: "0.875rem",
-									}}
-								>
+								<label className="checkbox-label text-sm min-h-0">
 									<input
 										type="checkbox"
 										checked={mount.readonly}
@@ -734,8 +696,7 @@ export const ManifestEditor = ({
 					<button
 						type="button"
 						onClick={addMount}
-						className="button-secondary"
-						style={{ width: "fit-content" }}
+						className="button-secondary w-fit"
 					>
 						<Icon name="add" size="sm" /> Add Mount
 					</button>
@@ -743,10 +704,10 @@ export const ManifestEditor = ({
 			</div>
 
 			{/* Runtime */}
-			<div className="card stack" style={{ gap: "1rem", padding: "1rem" }}>
-				<h4 style={{ margin: 0 }}>Runtime</h4>
-				<div className="row" style={{ gap: "1rem" }}>
-					<div className="form-group" style={{ flex: 1 }}>
+			<div className="card-md stack stack-md">
+				<h4 className="m-0">Runtime</h4>
+				<div className="form-row row-md">
+					<div className="form-group">
 						<label>Command</label>
 						<input
 							type="text"
@@ -756,7 +717,7 @@ export const ManifestEditor = ({
 							className="form-input"
 						/>
 					</div>
-					<div className="form-group" style={{ flex: 1 }}>
+					<div className="form-group">
 						<label>Working Directory</label>
 						<input
 							type="text"
@@ -767,10 +728,8 @@ export const ManifestEditor = ({
 						/>
 					</div>
 				</div>
-				<div className="row" style={{ gap: "1rem" }}>
-					<label
-						style={{ display: "flex", alignItems: "center", gap: "0.5rem" }}
-					>
+				<div className="form-row row-md">
+					<label className="checkbox-label min-h-0">
 						<input
 							type="checkbox"
 							checked={stdinOpen}
@@ -778,9 +737,7 @@ export const ManifestEditor = ({
 						/>
 						stdin_open
 					</label>
-					<label
-						style={{ display: "flex", alignItems: "center", gap: "0.5rem" }}
-					>
+					<label className="checkbox-label min-h-0">
 						<input
 							type="checkbox"
 							checked={tty}
@@ -792,15 +749,9 @@ export const ManifestEditor = ({
 			</div>
 
 			{/* Preview */}
-			<div className="card stack" style={{ gap: "1rem", padding: "1rem" }}>
-				<div
-					style={{
-						display: "flex",
-						justifyContent: "space-between",
-						alignItems: "center",
-					}}
-				>
-					<h4 style={{ margin: 0 }}>Live Preview</h4>
+			<div className="card-md stack stack-md">
+				<div className="row justify-between items-center">
+					<h4 className="m-0">Live Preview</h4>
 					<button
 						type="button"
 						onClick={handlePreview}
@@ -813,40 +764,16 @@ export const ManifestEditor = ({
 				</div>
 				{previewError && <p className="text-error">{previewError}</p>}
 				{preview && (
-					<div className="stack" style={{ gap: "1rem" }}>
+					<div className="stack stack-md">
 						<div>
-							<label style={{ fontWeight: 600, fontSize: "0.875rem" }}>
-								Dockerfile
-							</label>
-							<pre
-								style={{
-									background: "var(--code-bg, #1e1e1e)",
-									color: "var(--code-fg, #d4d4d4)",
-									padding: "1rem",
-									borderRadius: "0.375rem",
-									overflow: "auto",
-									fontSize: "0.8125rem",
-									maxHeight: "300px",
-								}}
-							>
+							<label className="font-semibold text-sm">Dockerfile</label>
+							<pre className="code-block" style={{ maxHeight: "300px" }}>
 								{preview.dockerfile}
 							</pre>
 						</div>
 						<div>
-							<label style={{ fontWeight: 600, fontSize: "0.875rem" }}>
-								Compose
-							</label>
-							<pre
-								style={{
-									background: "var(--code-bg, #1e1e1e)",
-									color: "var(--code-fg, #d4d4d4)",
-									padding: "1rem",
-									borderRadius: "0.375rem",
-									overflow: "auto",
-									fontSize: "0.8125rem",
-									maxHeight: "200px",
-								}}
-							>
+							<label className="font-semibold text-sm">Compose</label>
+							<pre className="code-block" style={{ maxHeight: "200px" }}>
 								{preview.compose}
 							</pre>
 						</div>
diff --git a/apps/web/src/styles/global.css b/apps/web/src/styles/global.css
index 3d52af8..91ad228 100644
--- a/apps/web/src/styles/global.css
+++ b/apps/web/src/styles/global.css
@@ -428,21 +428,71 @@
 	margin: 0 0 1rem;
 }
 
-.form-field {
+.form-field,
+.form-group {
 	display: flex;
 	flex-direction: column;
-	gap: 0.35rem;
+	gap: var(--space-2);
+	margin-bottom: var(--space-4);
+}
+
+.form-field:last-child,
+.form-group:last-child {
+	margin-bottom: 0;
 }
 
 .form-field input,
 .form-field textarea,
-.form-field select {
-	padding: 0.55rem 0.7rem;
+.form-field select,
+.form-group input,
+.form-group textarea,
+.form-group select {
+	padding: var(--space-2) var(--space-3);
 	border: 1px solid var(--border);
-	border-radius: 10px;
+	border-radius: var(--radius-md);
 	font: inherit;
 	background: var(--panel);
 	color: var(--ink);
+	width: 100%;
+}
+
+.form-row {
+	display: flex;
+	align-items: flex-start;
+	gap: var(--space-3);
+}
+
+.form-row .form-field,
+.form-row .form-group {
+	flex: 1;
+	margin-bottom: 0;
+}
+
+.form-section {
+	padding: var(--space-4);
+	background: var(--panel);
+	border: 1px solid var(--border);
+	border-radius: var(--radius-md);
+}
+
+.form-section > h4:first-child,
+.form-section > h3:first-child {
+	margin-top: 0;
+	margin-bottom: var(--space-3);
+}
+
+.form-help {
+	display: block;
+	font-size: var(--font-size-sm);
+	color: var(--muted);
+	margin-top: var(--space-1);
+	line-height: var(--line-height-normal);
+}
+
+.text-error {
+	color: var(--danger);
+	font-size: var(--font-size-sm);
+	line-height: var(--line-height-normal);
 }
 
 .dialog-actions {
@@ -494,19 +544,6 @@
 	flex: 1;
 }
 
-.form-group {
-	display: flex;
-	flex-direction: column;
-	gap: 0.35rem;
-}
-
-.form-group input {
-	padding: 0.55rem 0.7rem;
-	border: 1px solid var(--border);
-	border-radius: 10px;
-	font: inherit;
-}
-
 .error {
 	color: #b91c1c;
 	padding: 0.75rem;
@@ -1205,7 +1242,11 @@ a .icon:last-child {
 	}
 }
 /* ─── Primitive Buttons ─── */
-.btn {
+.btn,
+.primary-button,
+.secondary-button,
+.ghost-button,
+.button-secondary {
 	display: inline-flex;
 	align-items: center;
 	justify-content: center;
@@ -1224,29 +1265,41 @@ a .icon:last-child {
 	transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease;
 }
 
-.btn:focus-visible {
+.btn:focus-visible,
+.primary-button:focus-visible,
+.secondary-button:focus-visible,
+.ghost-button:focus-visible,
+.button-secondary:focus-visible {
 	outline: 2px solid var(--brand);
 	outline-offset: 2px;
 }
 
-.btn-primary {
+.btn-primary,
+.primary-button {
 	background: var(--brand);
 	color: var(--primary-fg);
 	border-color: var(--brand);
 }
 
-.btn-primary:hover {
+.btn-primary:hover,
+.primary-button:hover {
 	background: var(--brand-strong);
 	border-color: var(--brand-strong);
 }
 
-.btn-secondary {
+.btn-secondary,
+.secondary-button,
+.ghost-button,
+.button-secondary {
 	background: var(--panel);
 	color: var(--ink);
 	border-color: var(--border);
 }
 
-.btn-secondary:hover {
+.btn-secondary:hover,
+.secondary-button:hover,
+.ghost-button:hover,
+.button-secondary:hover {
 	background: var(--bg);
 }
 
@@ -1411,6 +1464,12 @@ a .icon:last-child {
 	color: var(--info);
 }
 
+.alert-success {
+	background: var(--success-light);
+	border-color: color-mix(in srgb, var(--success) 30%, transparent);
+	color: var(--success);
+}
+
 /* ─── Loading State ─── */
 .loading-state {
 	display: flex;
@@ -1454,6 +1513,104 @@ a .icon:last-child {
 	color: var(--muted);
 }
 
+/* ─── Status Badges ─── */
+.status-badge {
+	display: inline-flex;
+	align-items: center;
+	gap: var(--space-1);
+	padding: var(--space-1) var(--space-2);
+	border-radius: var(--radius-full);
+	font-size: var(--font-size-xs);
+	font-weight: 600;
+	text-transform: capitalize;
+	line-height: var(--line-height-tight);
+	background: var(--bg);
+	color: var(--muted);
+	border: 1px solid var(--border);
+}
+
+.status-badge::before {
+	content: "";
+	width: 6px;
+	height: 6px;
+	border-radius: 50%;
+	background: currentColor;
+}
+
+.status-badge--running,
+.status-badge--success {
+	background: var(--success-light);
+	color: var(--success);
+	border-color: color-mix(in srgb, var(--success) 30%, transparent);
+}
+
+.status-badge--error,
+.status-badge--failed {
+	background: var(--danger-light);
+	color: var(--danger);
+	border-color: color-mix(in srgb, var(--danger) 30%, transparent);
+}
+
+.status-badge--warning {
+	background: var(--warning-light);
+	color: var(--warning);
+	border-color: color-mix(in srgb, var(--warning) 30%, transparent);
+}
+
+.status-badge--info,
+.status-badge--pending,
+.status-badge--idle {
+	background: var(--info-light);
+	color: var(--info);
+	border-color: color-mix(in srgb, var(--info) 30%, transparent);
+}
+
+/* Legacy instance-chip alias */
+.instance-chip {
+	display: inline-flex;
+	align-items: center;
+	gap: var(--space-1);
+	padding: var(--space-1) var(--space-2);
+	border-radius: var(--radius-full);
+	font-size: var(--font-size-xs);
+	font-weight: 600;
+	text-transform: capitalize;
+	line-height: var(--line-height-tight);
+	background: var(--bg);
+	color: var(--muted);
+	border: 1px solid var(--border);
+}
+
+.instance-chip::before {
+	content: "";
+	width: 6px;
+	height: 6px;
+	border-radius: 50%;
+	background: currentColor;
+}
+
+.instance-chip.running {
+	background: var(--success-light);
+	color: var(--success);
+	border-color: color-mix(in srgb, var(--success) 30%, transparent);
+}
+
+.instance-chip.starting,
+.instance-chip.building,
+.instance-chip.probing {
+	background: var(--warning-light);
+	color: var(--warning);
+	border-color: color-mix(in srgb, var(--warning) 30%, transparent);
+}
+
+.instance-chip.error,
+.instance-chip.unhealthy,
+.instance-chip.stopped {
+	background: var(--danger-light);
+	color: var(--danger);
+	border-color: color-mix(in srgb, var(--danger) 30%, transparent);
+}
+
 /* ─── Focus States ─── */
 .nav-item:focus-visible,
 .mobile-nav-item:focus-visible,
diff --git a/apps/web/src/styles/utilities.css b/apps/web/src/styles/utilities.css
index 0e3713e..2e8aebe 100644
--- a/apps/web/src/styles/utilities.css
+++ b/apps/web/src/styles/utilities.css
@@ -13,7 +13,7 @@
 .stack {
 	display: flex;
 	flex-direction: column;
-	gap: var(--space-4);
+	gap: var(--space-3);
 }
 
 .stack-sm {
@@ -21,20 +21,103 @@
 }
 
 .stack-md {
-	gap: var(--space-4);
+	gap: var(--space-3);
 }
 
 .stack-lg {
-	gap: var(--space-6);
+	gap: var(--space-4);
+}
+
+.stack-xl {
+	gap: var(--space-5);
 }
 
 .row {
 	display: flex;
 	flex-wrap: wrap;
-	gap: var(--space-4);
+	gap: var(--space-3);
 	align-items: center;
 }
 
+.row-sm {
+	gap: var(--space-2);
+}
+
+.row-md {
+	gap: var(--space-3);
+}
+
+.row-lg {
+	gap: var(--space-4);
+}
+
+.row.items-start,
+.items-start {
+	align-items: flex-start;
+}
+
+.row.items-center,
+.items-center {
+	align-items: center;
+}
+
+.row.items-end,
+.items-end {
+	align-items: flex-end;
+}
+
+.justify-between {
+	justify-content: space-between;
+}
+
+.justify-center {
+	justify-content: center;
+}
+
+.justify-end {
+	justify-content: flex-end;
+}
+
+.flex-1 {
+	flex: 1;
+}
+
+.flex-2 {
+	flex: 2;
+}
+
+.flex-none {
+	flex: none;
+}
+
+.flex-wrap {
+	flex-wrap: wrap;
+}
+
+.min-h-0 {
+	min-height: 0;
+}
+
+.w-full {
+	width: 100%;
+}
+
+.w-fit {
+	width: fit-content;
+}
+
+.min-w-0 {
+	min-width: 0;
+}
+
+.max-w-prose {
+	max-width: 65ch;
+}
+
+.max-w-form {
+	max-width: 800px;
+}
+
 .grid {
 	display: grid;
 	gap: var(--space-4);
@@ -48,6 +131,286 @@
 	white-space: nowrap;
 }
 
+.text-xs {
+	font-size: var(--font-size-xs);
+}
+
+.text-sm {
+	font-size: var(--font-size-sm);
+}
+
+.text-base {
+	font-size: var(--font-size-base);
+}
+
+.text-lg {
+	font-size: var(--font-size-lg);
+}
+
+.text-xl {
+	font-size: var(--font-size-xl);
+}
+
+.font-mono {
+	font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
+}
+
+.font-medium {
+	font-weight: 500;
+}
+
+.font-semibold {
+	font-weight: 600;
+}
+
+.text-center {
+	text-align: center;
+}
+
+.text-left {
+	text-align: left;
+}
+
+.text-right {
+	text-align: right;
+}
+
+/* Visual Utilities */
+.cursor-pointer {
+	cursor: pointer;
+}
+
+.overflow-auto {
+	overflow: auto;
+}
+
+.overflow-hidden {
+	overflow: hidden;
+}
+
+.rounded-sm {
+	border-radius: var(--radius-sm);
+}
+
+.rounded-md {
+	border-radius: var(--radius-md);
+}
+
+.rounded-lg {
+	border-radius: var(--radius-lg);
+}
+
+.rounded-xl {
+	border-radius: var(--radius-xl);
+}
+
+.rounded-full {
+	border-radius: var(--radius-full);
+}
+
+/* Spacing Utilities */
+.m-0 {
+	margin: 0;
+}
+
+.mt-1 {
+	margin-top: var(--space-1);
+}
+
+.mt-2 {
+	margin-top: var(--space-2);
+}
+
+.mt-3 {
+	margin-top: var(--space-3);
+}
+
+.mt-4 {
+	margin-top: var(--space-4);
+}
+
+.mt-5 {
+	margin-top: var(--space-5);
+}
+
+.mt-6 {
+	margin-top: var(--space-6);
+}
+
+.mb-0 {
+	margin-bottom: 0;
+}
+
+.mb-1 {
+	margin-bottom: var(--space-1);
+}
+
+.mb-2 {
+	margin-bottom: var(--space-2);
+}
+
+.mb-3 {
+	margin-bottom: var(--space-3);
+}
+
+.mb-4 {
+	margin-bottom: var(--space-4);
+}
+
+.mb-5 {
+	margin-bottom: var(--space-5);
+}
+
+.mb-6 {
+	margin-bottom: var(--space-6);
+}
+
+.ml-auto {
+	margin-left: auto;
+}
+
+.mr-auto {
+	margin-right: auto;
+}
+
+.ml-1 {
+	margin-left: var(--space-1);
+}
+
+.ml-2 {
+	margin-left: var(--space-2);
+}
+
+.ml-3 {
+	margin-left: var(--space-3);
+}
+
+.mr-1 {
+	margin-right: var(--space-1);
+}
+
+.mr-2 {
+	margin-right: var(--space-2);
+}
+
+.mr-3 {
+	margin-right: var(--space-3);
+}
+
+.p-1 {
+	padding: var(--space-1);
+}
+
+.p-2 {
+	padding: var(--space-2);
+}
+
+.p-3 {
+	padding: var(--space-3);
+}
+
+.p-4 {
+	padding: var(--space-4);
+}
+
+.p-5 {
+	padding: var(--space-5);
+}
+
+.px-2 {
+	padding-left: var(--space-2);
+	padding-right: var(--space-2);
+}
+
+.px-3 {
+	padding-left: var(--space-3);
+	padding-right: var(--space-3);
+}
+
+.px-4 {
+	padding-left: var(--space-4);
+	padding-right: var(--space-4);
+}
+
+.py-1 {
+	padding-top: var(--space-1);
+	padding-bottom: var(--space-1);
+}
+
+.py-2 {
+	padding-top: var(--space-2);
+	padding-bottom: var(--space-2);
+}
+
+.py-3 {
+	padding-top: var(--space-3);
+	padding-bottom: var(--space-3);
+}
+
+.py-4 {
+	padding-top: var(--space-4);
+	padding-bottom: var(--space-4);
+}
+
+.pl-2 {
+	padding-left: var(--space-2);
+}
+
+.pl-3 {
+	padding-left: var(--space-3);
+}
+
+.pl-4 {
+	padding-left: var(--space-4);
+}
+
+.pr-2 {
+	padding-right: var(--space-2);
+}
+
+.pr-3 {
+	padding-right: var(--space-3);
+}
+
+.pr-4 {
+	padding-right: var(--space-4);
+}
+
+/* Border Utilities */
+.border {
+	border: 1px solid var(--border);
+}
+
+.border-l {
+	border-left: 1px solid var(--border);
+}
+
+.border-l-2 {
+	border-left: 2px solid var(--border);
+}
+
+/* Card Utilities */
+.card-sm {
+	padding: var(--space-3);
+	background: var(--panel);
+	border: 1px solid var(--border);
+	border-radius: var(--radius-md);
+}
+
+.card-md {
+	padding: var(--space-4);
+	background: var(--panel);
+	border: 1px solid var(--border);
+	border-radius: var(--radius-md);
+}
+
+.card-lg {
+	padding: var(--space-5);
+	background: var(--panel);
+	border: 1px solid var(--border);
+	border-radius: var(--radius-lg);
+}
+
 .truncate-multiline {
 	display: -webkit-box;
 	-webkit-line-clamp: 3;
@@ -3777,6 +4140,209 @@ a:active,
 	gap: var(--space-3);
 }
 
+/* ─── Sticky Footer ─── */
+.sticky-footer {
+	position: sticky;
+	bottom: var(--space-4);
+	z-index: 10;
+	background: var(--panel);
+	padding: var(--space-4);
+	border: 1px solid var(--border);
+	border-radius: var(--radius-md);
+	box-shadow: var(--shadow-md);
+}
+
+/* ─── Drag Items ─── */
+.drag-item {
+	display: flex;
+	align-items: center;
+	gap: var(--space-2);
+	padding: var(--space-2) var(--space-3);
+	background: var(--panel);
+	border: 1px solid var(--border);
+	border-radius: var(--radius-md);
+	margin-bottom: var(--space-1);
+	cursor: grab;
+	transition: background 0.15s;
+}
+
+.drag-item:hover {
+	background: var(--bg);
+}
+
+.drag-item-active {
+	background: var(--brand-light, color-mix(in srgb, var(--brand) 10%, transparent));
+	border-color: var(--brand);
+}
+
+.drag-handle {
+	cursor: grab;
+	color: var(--muted);
+}
+
+/* ─── Code Block ─── */
+.code-block {
+	background: var(--code-bg, #1e1e1e);
+	color: var(--code-fg, #d4d4d4);
+	padding: var(--space-4);
+	border-radius: var(--radius-md);
+	overflow: auto;
+	font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
+	font-size: var(--font-size-sm);
+	line-height: var(--line-height-normal);
+}
+
+/* ─── Empty State ─── */
+.empty-state {
+	display: flex;
+	flex-direction: column;
+	align-items: center;
+	justify-content: center;
+	padding-top: var(--space-10);
+	color: var(--muted);
+	text-align: center;
+}
+
+.empty-state-icon {
+	opacity: 0.3;
+	margin-bottom: var(--space-4);
+}
+
+.empty-state h3 {
+	margin: 0 0 var(--space-2);
+	font-weight: 500;
+}
+
+.empty-state p {
+	margin: 0;
+}
+
+/* ─── Sidebar ─── */
+.sidebar {
+	width: var(--sidebar-width);
+	min-width: var(--sidebar-width);
+	display: flex;
+	flex-direction: column;
+	border-right: 1px solid var(--border);
+	background: var(--panel);
+}
+
+.sidebar-header {
+	padding: var(--space-4);
+	border-bottom: 1px solid var(--border);
+}
+
+.sidebar-header h2 {
+	margin: 0;
+	font-size: var(--font-size-lg);
+}
+
+.sidebar-header p {
+	margin: var(--space-1) 0 0;
+	font-size: var(--font-size-sm);
+}
+
+.sidebar-list {
+	flex: 1;
+	overflow-y: auto;
+	padding: var(--space-2);
+}
+
+.sidebar-footer {
+	padding: var(--space-4);
+	border-top: 1px solid var(--border);
+}
+
+.sidebar-item {
+	width: 100%;
+	text-align: left;
+	padding: var(--space-3) var(--space-4);
+	margin-bottom: var(--space-1);
+	border-radius: var(--radius-md);
+	border: none;
+	background: transparent;
+	color: var(--ink);
+	cursor: pointer;
+	display: flex;
+	align-items: center;
+	gap: var(--space-3);
+	transition: background 0.15s;
+}
+
+.sidebar-item:hover {
+	background: var(--bg);
+}
+
+.sidebar-item-active,
+.sidebar-item-active:hover {
+	background: var(--brand);
+	color: white;
+}
+
+.sidebar-item-active .delete-btn {
+	color: rgba(255, 255, 255, 0.8);
+}
+
+.sidebar-item-active .delete-btn:hover {
+	background: rgba(255, 255, 255, 0.15);
+	color: white;
+}
+
+.sidebar-item-active .badge {
+	background: rgba(255, 255, 255, 0.2);
+	border-color: rgba(255, 255, 255, 0.3);
+	color: white;
+}
+
+.sidebar-item-content {
+	flex: 1;
+	min-width: 0;
+}
+
+.sidebar-item-title {
+	font-weight: 600;
+	font-size: var(--font-size-base);
+	white-space: nowrap;
+	overflow: hidden;
+	text-overflow: ellipsis;
+}
+
+.sidebar-item-subtitle {
+	font-size: var(--font-size-sm);
+	opacity: 0.8;
+	margin-top: var(--space-1);
+}
+
+.sidebar-item .delete-btn {
+	opacity: 0;
+}
+
+.sidebar-item:hover .delete-btn,
+.sidebar-item:focus-within .delete-btn {
+	opacity: 1;
+}
+
+.sidebar-create-button {
+	width: 100%;
+	display: flex;
+	align-items: center;
+	justify-content: center;
+	gap: var(--space-2);
+	padding: var(--space-3);
+	border-radius: var(--radius-md);
+	border: 2px dashed var(--border);
+	background: transparent;
+	color: var(--muted);
+	cursor: pointer;
+	font-weight: 600;
+	transition: border-color 0.15s, color 0.15s;
+}
+
+.sidebar-create-button:hover {
+	border-color: var(--brand);
+	color: var(--brand);
+}
+
 /* ─── Mobile FAB ─── */
 .mobile-fab {
 	position: fixed;