diff --git a/web/components/date-display/date-display.css b/web/components/date-display/date-display.css
new file mode 100644
index 0000000..06c3390
--- /dev/null
+++ b/web/components/date-display/date-display.css
@@ -0,0 +1,38 @@
+:host {
+  display: block;
+  background: #1e1e2e;
+  border: 1px solid #313244;
+  border-radius: 8px;
+  padding: 16px 20px;
+  font-family: monospace;
+  color: #cdd6f4;
+  min-width: 260px;
+}
+
+.label {
+  font-size: 11px;
+  text-transform: uppercase;
+  letter-spacing: 0.08em;
+  color: #6c7086;
+  margin-bottom: 6px;
+}
+
+.time {
+  font-size: 28px;
+  font-weight: 600;
+  color: #89b4fa;
+}
+
+.date {
+  font-size: 13px;
+  color: #a6adc8;
+  margin-top: 4px;
+}
+
+.agent {
+  margin-top: 12px;
+  font-size: 11px;
+  color: #585b70;
+  border-top: 1px solid #313244;
+  padding-top: 10px;
+}
diff --git a/web/components/date-display/date-display.js b/web/components/date-display/date-display.js
index dab208e..c008c93 100644
--- a/web/components/date-display/date-display.js
+++ b/web/components/date-display/date-display.js
@@ -1,53 +1,19 @@
 import { config } from '../../core/config.js'
 
+const CSS = new URL('./date-display.css', import.meta.url).href
+
 class DateDisplay extends HTMLElement {
   #interval = null
 
   connectedCallback() {
     this.attachShadow({ mode: 'open' })
     this.shadowRoot.innerHTML = `
-      <style>
-        :host {
-          display: block;
-          background: #1e1e2e;
-          border: 1px solid #313244;
-          border-radius: 8px;
-          padding: 16px 20px;
-          font-family: monospace;
-          color: #cdd6f4;
-          min-width: 260px;
-        }
-        .label {
-          font-size: 11px;
-          text-transform: uppercase;
-          letter-spacing: 0.08em;
-          color: #6c7086;
-          margin-bottom: 6px;
-        }
-        .time {
-          font-size: 28px;
-          font-weight: 600;
-          color: #89b4fa;
-        }
-        .date {
-          font-size: 13px;
-          color: #a6adc8;
-          margin-top: 4px;
-        }
-        .agent {
-          margin-top: 12px;
-          font-size: 11px;
-          color: #585b70;
-          border-top: 1px solid #313244;
-          padding-top: 10px;
-        }
-      </style>
+      <link rel="stylesheet" href="${CSS}">
       <div class="label">Current time</div>
       <div class="time" id="time"></div>
       <div class="date" id="date"></div>
       <div class="agent">agent → <span id="agent-url"></span></div>
     `
-
     this.shadowRoot.getElementById('agent-url').textContent = config.agent_url
     this.#tick()
     this.#interval = setInterval(() => this.#tick(), 1000)
diff --git a/web/components/login-gate/login-gate.css b/web/components/login-gate/login-gate.css
new file mode 100644
index 0000000..f843d38
--- /dev/null
+++ b/web/components/login-gate/login-gate.css
@@ -0,0 +1,81 @@
+* { box-sizing: border-box; margin: 0; padding: 0; }
+
+.overlay {
+  position: fixed;
+  inset: 0;
+  background: #181825;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 9999;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
+}
+
+.card {
+  background: #1e1e2e;
+  border: 1px solid #313244;
+  border-radius: 12px;
+  padding: 36px 40px;
+  width: 100%;
+  max-width: 420px;
+  display: flex;
+  flex-direction: column;
+  gap: 24px;
+}
+
+@media (max-width: 480px) {
+  .card { padding: 24px 20px; margin: 0 12px; }
+}
+
+.header { display: flex; flex-direction: column; gap: 6px; }
+
+.header h1 {
+  font-size: 20px;
+  font-weight: 600;
+  color: #89b4fa;
+  letter-spacing: 0.02em;
+}
+
+.header p { font-size: 13px; color: #6c7086; }
+
+.fields { display: flex; flex-direction: column; gap: 14px; }
+.field  { display: flex; flex-direction: column; gap: 6px; }
+
+label {
+  font-size: 12px;
+  font-weight: 500;
+  color: #a6adc8;
+  text-transform: uppercase;
+  letter-spacing: 0.06em;
+}
+
+input {
+  background: #181825;
+  border: 1px solid #313244;
+  border-radius: 6px;
+  padding: 9px 12px;
+  color: #cdd6f4;
+  font-size: 14px;
+  font-family: monospace;
+  outline: none;
+  transition: border-color 0.15s;
+  width: 100%;
+}
+
+input:focus       { border-color: #89b4fa; }
+input::placeholder { color: #45475a; }
+
+button {
+  background: #89b4fa;
+  color: #1e1e2e;
+  border: none;
+  border-radius: 6px;
+  padding: 10px 16px;
+  font-size: 14px;
+  font-weight: 600;
+  cursor: pointer;
+  transition: background 0.15s;
+  width: 100%;
+}
+
+button:hover { background: #b4d0fa; }
diff --git a/web/components/login-gate/login-gate.js b/web/components/login-gate/login-gate.js
index 247fa06..1de65de 100644
--- a/web/components/login-gate/login-gate.js
+++ b/web/components/login-gate/login-gate.js
@@ -18,6 +18,7 @@
 // Phase 2: swap for <oidc-gate> that resolves ready with a JWT — api-client unchanged.
 
 const SESSION_KEY = 'two:credentials'
+const CSS         = new URL('./login-gate.css', import.meta.url).href
 
 class LoginGate extends HTMLElement {
   #resolve = null
@@ -57,107 +58,7 @@ class LoginGate extends HTMLElement {
     const overlay = document.createElement('div')
     overlay.attachShadow({ mode: 'open' })
     overlay.shadowRoot.innerHTML = `
-      <style>
-        * { box-sizing: border-box; margin: 0; padding: 0; }
-
-        .overlay {
-          position: fixed;
-          inset: 0;
-          background: #181825;
-          display: flex;
-          align-items: center;
-          justify-content: center;
-          z-index: 9999;
-          font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
-        }
-
-        .card {
-          background: #1e1e2e;
-          border: 1px solid #313244;
-          border-radius: 12px;
-          padding: 36px 40px;
-          width: 100%;
-          max-width: 420px;
-          display: flex;
-          flex-direction: column;
-          gap: 24px;
-        }
-
-        .header {
-          display: flex;
-          flex-direction: column;
-          gap: 6px;
-        }
-
-        .header h1 {
-          font-size: 20px;
-          font-weight: 600;
-          color: #89b4fa;
-          letter-spacing: 0.02em;
-        }
-
-        .header p {
-          font-size: 13px;
-          color: #6c7086;
-        }
-
-        .fields {
-          display: flex;
-          flex-direction: column;
-          gap: 14px;
-        }
-
-        .field {
-          display: flex;
-          flex-direction: column;
-          gap: 6px;
-        }
-
-        label {
-          font-size: 12px;
-          font-weight: 500;
-          color: #a6adc8;
-          text-transform: uppercase;
-          letter-spacing: 0.06em;
-        }
-
-        input {
-          background: #181825;
-          border: 1px solid #313244;
-          border-radius: 6px;
-          padding: 9px 12px;
-          color: #cdd6f4;
-          font-size: 14px;
-          font-family: monospace;
-          outline: none;
-          transition: border-color 0.15s;
-          width: 100%;
-        }
-
-        input:focus {
-          border-color: #89b4fa;
-        }
-
-        input::placeholder {
-          color: #45475a;
-        }
-
-        button {
-          background: #89b4fa;
-          color: #1e1e2e;
-          border: none;
-          border-radius: 6px;
-          padding: 10px 16px;
-          font-size: 14px;
-          font-weight: 600;
-          cursor: pointer;
-          transition: background 0.15s, opacity 0.15s;
-          width: 100%;
-        }
-
-        button:hover { background: #b4d0fa; }
-      </style>
-
+      <link rel="stylesheet" href="${CSS}">
       <div class="overlay">
         <div class="card">
           <div class="header">
diff --git a/web/components/logout-button/logout-button.css b/web/components/logout-button/logout-button.css
new file mode 100644
index 0000000..2a6aa10
--- /dev/null
+++ b/web/components/logout-button/logout-button.css
@@ -0,0 +1,30 @@
+:host {
+  display: inline-flex;
+}
+
+button {
+  display: inline-flex;
+  align-items: center;
+  gap: 7px;
+  background: transparent;
+  border: 1px solid #313244;
+  border-radius: 6px;
+  padding: 7px 12px;
+  color: #a6adc8;
+  font-size: 13px;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
+  cursor: pointer;
+  transition: background 0.12s, color 0.12s, border-color 0.12s;
+}
+
+button:hover {
+  background: #313244;
+  color: #f38ba8;
+  border-color: #f38ba8;
+}
+
+.icon { display: flex; align-items: center; }
+
+/* compact attribute — icon only */
+:host([compact]) button { padding: 7px; }
+:host([compact]) .label { display: none; }
diff --git a/web/components/logout-button/logout-button.js b/web/components/logout-button/logout-button.js
index 45aa80f..69b651f 100644
--- a/web/components/logout-button/logout-button.js
+++ b/web/components/logout-button/logout-button.js
@@ -1,63 +1,21 @@
-// Logout button — drop anywhere in the DOM.
-//
-//   <logout-button></logout-button>            full button with label
-//   <logout-button compact></logout-button>    icon only (for tight spaces)
-//
-// Delegates to <login-gate>.logout(). Works regardless of where it sits
-// (header, members panel, dropdown…) since it resolves the gate from the document.
-//
-// Phase 2: if login-gate is swapped for oidc-gate, this still works as long as
-// the auth component exposes a logout() method (see #gate()).
+const CSS = new URL('./logout-button.css', import.meta.url).href
 
 const ICON = `<svg width="15" height="15" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M9 21H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h4"/><polyline points="16 17 21 12 16 7"/><line x1="21" y1="12" x2="9" y2="12"/></svg>`
 
 class LogoutButton extends HTMLElement {
   connectedCallback() {
     this.attachShadow({ mode: 'open' })
-
-    const compact = this.hasAttribute('compact')
-
     this.shadowRoot.innerHTML = `
-      <style>
-        :host { display: inline-flex; }
-
-        button {
-          display: inline-flex;
-          align-items: center;
-          gap: 7px;
-          background: transparent;
-          border: 1px solid #313244;
-          border-radius: 6px;
-          padding: ${compact ? '7px' : '7px 12px'};
-          color: #a6adc8;
-          font-size: 13px;
-          font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
-          cursor: pointer;
-          transition: background 0.12s, color 0.12s, border-color 0.12s;
-        }
-
-        button:hover {
-          background: #313244;
-          color: #f38ba8;
-          border-color: #f38ba8;
-        }
-
-        .icon { display: flex; align-items: center; }
-        .label { ${compact ? 'display: none;' : ''} }
-      </style>
-
+      <link rel="stylesheet" href="${CSS}">
       <button type="button" title="Log out">
         <span class="icon">${ICON}</span>
         <span class="label">Log out</span>
       </button>
     `
-
     this.shadowRoot.querySelector('button')
       .addEventListener('click', () => this.#logout())
   }
 
-  // Resolves the auth component. Today: login-gate. Tomorrow: any element
-  // exposing logout() (oidc-gate, oauth-gate…).
   #gate() {
     return document.querySelector('login-gate, [data-auth-gate]')
   }
diff --git a/web/components/side-nav/side-nav.css b/web/components/side-nav/side-nav.css
new file mode 100644
index 0000000..6e371c1
--- /dev/null
+++ b/web/components/side-nav/side-nav.css
@@ -0,0 +1,40 @@
+:host {
+  display: flex;
+  flex-direction: column;
+  width: 220px;
+  min-width: 220px;
+  background: #1e1e2e;
+  border-right: 1px solid #313244;
+  padding: 16px 12px;
+  gap: 4px;
+  height: 100%;
+  overflow: hidden;
+  box-sizing: border-box;
+}
+
+.item {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  padding: 11px 12px;
+  border-radius: 6px;
+  text-decoration: none;
+  color: #a6adc8;
+  font-size: 14px;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
+  min-height: 44px;
+  transition: background 0.1s, color 0.1s;
+}
+
+.item:hover        { background: #313244; color: #cdd6f4; }
+.item.active       { background: #313244; color: #89b4fa; }
+.item.active .icon { color: #89b4fa; }
+
+.icon {
+  display: flex;
+  align-items: center;
+  color: #6c7086;
+  flex-shrink: 0;
+}
+
+.item:hover .icon { color: #cdd6f4; }
diff --git a/web/components/side-nav/side-nav.js b/web/components/side-nav/side-nav.js
index b96f236..8eb9e61 100644
--- a/web/components/side-nav/side-nav.js
+++ b/web/components/side-nav/side-nav.js
@@ -18,7 +18,8 @@ const ICONS = {
   vm:        `<svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="2" y="3" width="20" height="14" rx="2"/><path d="M8 21h8M12 17v4"/></svg>`,
 }
 
-const MQ      = window.matchMedia('(max-width: 768px)')
+const CSS = new URL('./side-nav.css', import.meta.url).href
+const MQ  = window.matchMedia('(max-width: 768px)')
 const NAV_W   = 220   // px
 
 function resolveIcon(name) {
@@ -67,44 +68,7 @@ class SideNav extends HTMLElement {
     }).join('')
 
     this.shadowRoot.innerHTML = `
-      <style>
-        :host {
-          /* Géométrie desktop définie ici ; mobile gérée par this.style en JS */
-          display: flex;
-          flex-direction: column;
-          width: ${NAV_W}px;
-          min-width: ${NAV_W}px;
-          background: #1e1e2e;
-          border-right: 1px solid #313244;
-          padding: 16px 12px;
-          gap: 4px;
-          height: 100%;
-          overflow: hidden;        /* empêche tout débordement */
-          box-sizing: border-box;
-        }
-
-        .item {
-          display: flex;
-          align-items: center;
-          gap: 10px;
-          padding: 11px 12px;
-          border-radius: 6px;
-          text-decoration: none;
-          color: #a6adc8;
-          font-size: 14px;
-          font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
-          min-height: 44px;
-          transition: background 0.1s, color 0.1s;
-        }
-        .item:hover         { background: #313244; color: #cdd6f4; }
-        .item.active        { background: #313244; color: #89b4fa; }
-        .item.active .icon  { color: #89b4fa; }
-        .icon {
-          display: flex; align-items: center;
-          color: #6c7086; flex-shrink: 0;
-        }
-        .item:hover .icon { color: #cdd6f4; }
-      </style>
+      <link rel="stylesheet" href="${CSS}">
       ${links}
     `
 
diff --git a/web/components/side-panel/side-panel.css b/web/components/side-panel/side-panel.css
new file mode 100644
index 0000000..017585c
--- /dev/null
+++ b/web/components/side-panel/side-panel.css
@@ -0,0 +1,83 @@
+:host {
+  --width:        480px;  /* overridden via this.style.setProperty in JS */
+  --offset:       0px;
+  --dur:          220ms;
+  --actual-width: min(var(--width), 100vw);
+
+  position: fixed;
+  top: 0;
+  right: calc(-1 * var(--actual-width));
+  width: var(--actual-width);
+  height: 100vh;
+  background: #1e1e2e;
+  border-left: 1px solid #313244;
+  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.4);
+  display: flex;
+  flex-direction: column;
+  z-index: calc(1000 + var(--stack, 0));
+  transition: right var(--dur) cubic-bezier(0.4, 0, 0.2, 1);
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
+  color: #cdd6f4;
+}
+
+:host([data-open]) {
+  right: var(--offset);
+}
+
+@media (max-width: 600px) {
+  :host {
+    --actual-width: 100vw;
+  }
+  :host([data-open]) {
+    right: 0;
+  }
+}
+
+.header {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 16px 20px;
+  border-bottom: 1px solid #313244;
+  flex-shrink: 0;
+}
+
+.title {
+  flex: 1;
+  font-size: 15px;
+  font-weight: 600;
+  color: #cdd6f4;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.close {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: transparent;
+  border: 1px solid transparent;
+  border-radius: 6px;
+  padding: 5px;
+  color: #6c7086;
+  cursor: pointer;
+  transition: background 0.12s, color 0.12s, border-color 0.12s;
+  flex-shrink: 0;
+}
+
+.close:hover {
+  background: #313244;
+  border-color: #45475a;
+  color: #f38ba8;
+}
+
+.body {
+  flex: 1;
+  overflow-y: auto;
+  padding: 20px;
+}
+
+.body::-webkit-scrollbar       { width: 6px; }
+.body::-webkit-scrollbar-track { background: transparent; }
+.body::-webkit-scrollbar-thumb { background: #45475a; border-radius: 3px; }
diff --git a/web/components/side-panel/side-panel.js b/web/components/side-panel/side-panel.js
index 254160f..63e68c9 100644
--- a/web/components/side-panel/side-panel.js
+++ b/web/components/side-panel/side-panel.js
@@ -25,6 +25,8 @@
 //   Clicking the backdrop closes only the topmost panel.
 //   ESC closes the topmost panel.
 
+const CSS = new URL('./side-panel.css', import.meta.url).href
+
 const CLOSE_ICON = `<svg width="16" height="16" viewBox="0 0 24 24" fill="none"
   stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
   <line x1="18" y1="6" x2="6" y2="18"/><line x1="6" y1="6" x2="18" y2="18"/>
@@ -103,95 +105,11 @@ export class SidePanel extends HTMLElement {
     const title = this.getAttribute('title') ?? ''
     const width = this.getAttribute('width') ?? '480px'
 
+    // Passe la largeur comme custom property — référencée dans le CSS via var(--width)
+    this.style.setProperty('--width', width)
+
     this.shadowRoot.innerHTML = `
-      <style>
-        :host {
-          --offset: 0px;
-          --width:  ${width};
-          --dur:    ${ANIM_DURATION}ms;
-          /* Cap width to viewport — never overflows on mobile */
-          --actual-width: min(var(--width), 100vw);
-
-          position: fixed;
-          top: 0;
-          right: calc(-1 * var(--actual-width));
-          width: var(--actual-width);
-          height: 100vh;
-          background: #1e1e2e;
-          border-left: 1px solid #313244;
-          box-shadow: -8px 0 32px rgba(0,0,0,0.4);
-          display: flex;
-          flex-direction: column;
-          z-index: calc(1000 + var(--stack, 0));
-          transition: right var(--dur) cubic-bezier(0.4, 0, 0.2, 1);
-          font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
-          color: #cdd6f4;
-        }
-
-        :host([data-open]) {
-          right: var(--offset);
-        }
-
-        /* On mobile: always full-width, no stack offset */
-        @media (max-width: 600px) {
-          :host {
-            --actual-width: 100vw;
-          }
-          :host([data-open]) {
-            right: 0;
-          }
-        }
-
-        .header {
-          display: flex;
-          align-items: center;
-          gap: 12px;
-          padding: 16px 20px;
-          border-bottom: 1px solid #313244;
-          flex-shrink: 0;
-        }
-
-        .title {
-          flex: 1;
-          font-size: 15px;
-          font-weight: 600;
-          color: #cdd6f4;
-          white-space: nowrap;
-          overflow: hidden;
-          text-overflow: ellipsis;
-        }
-
-        .close {
-          display: flex;
-          align-items: center;
-          justify-content: center;
-          background: transparent;
-          border: 1px solid transparent;
-          border-radius: 6px;
-          padding: 5px;
-          color: #6c7086;
-          cursor: pointer;
-          transition: background 0.12s, color 0.12s, border-color 0.12s;
-          flex-shrink: 0;
-        }
-
-        .close:hover {
-          background: #313244;
-          border-color: #45475a;
-          color: #f38ba8;
-        }
-
-        .body {
-          flex: 1;
-          overflow-y: auto;
-          padding: 20px;
-        }
-
-        .body::-webkit-scrollbar { width: 6px; }
-        .body::-webkit-scrollbar-track { background: transparent; }
-        .body::-webkit-scrollbar-thumb { background: #45475a; border-radius: 3px; }
-      </style>
-
+      <link rel="stylesheet" href="${CSS}">
       <div class="header">
         <span class="title">${title}</span>
         <button class="close" aria-label="Close">${CLOSE_ICON}</button>