/* Keep the conversation layout and inherit the original dark theme. */
:root { --border: var(--ui-line); --ui-on-primary: #071211; }
[hidden] { display: none !important; }
html, body.simple-app { height: 100%; min-height: 100%; background-color: var(--bg); }
body.simple-app { padding-bottom: 0; font-size: 15px; line-height: 1.6; }
.simple-app .ambient { display: block; }
.simple-app button { -webkit-tap-highlight-color: transparent; }
.simple-app button:focus-visible, .simple-app a:focus-visible, .simple-app summary:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
.simple-app .app-shell { min-height: 100dvh; display: grid; grid-template-columns: 258px minmax(0,1fr); }
.simple-app .sidebar { position: sticky; top: 0; bottom: auto; right: auto; height: var(--simple-visible-height, 100dvh); padding: 24px 16px 16px; border: 0; border-right: 1px solid var(--line); background: var(--ui-raised); backdrop-filter: none; z-index: 30; overflow-y: auto; }
.simple-sidebar-brand { display: flex; align-items: center; gap: 10px; padding: 0 12px 25px; font-size: 19px; }
.simple-sidebar-brand strong { font-weight: 600; }
.simple-brand-mark { display: grid; place-items: center; width: 27px; height: 27px; border: 1.5px solid var(--cyan); border-radius: 9px; transform: rotate(-8deg); font-size: 20px; }
.simple-app .nav { display: block; overflow: visible; margin-bottom: 25px; }
.simple-new-chat { width: 100%; min-height: 45px; display: flex; align-items: center; gap: 10px; padding: 10px 12px; border: 1px solid var(--line); background: var(--ui-raised); border-radius: 10px; font-size: 14px; text-align: left; cursor: pointer; }
.simple-new-chat:hover { background: var(--surface-3); }
.simple-new-chat > span { font-size: 22px; line-height: 1; }
.simple-sidebar #conversationHome { flex: 1; overflow: visible; min-width: 0; }
.simple-sidebar .conversation-home-controls { display: grid; grid-template-columns: 1fr; margin: 0 0 20px; gap: 8px; }
.simple-sidebar .conversation-home-controls label { font-size: 12px; color: var(--muted); }
.simple-sidebar .conversation-home-controls select { width: 100%; min-width: 0; font-size: 14px; padding: 9px 10px; }
.simple-sidebar .conversation-thread-list { display: grid; grid-template-columns: 1fr; gap: 3px; overflow: visible; padding: 0; }
.simple-sidebar .conversation-thread { width: 100%; max-width: 100%; min-width: 0; padding: 10px 12px; border: 0; border-radius: 8px; background: transparent; text-align: left; color: var(--text); }
.simple-sidebar .conversation-thread:hover, .simple-sidebar .conversation-thread.selected { background: var(--surface-3); color: var(--text); }
.simple-sidebar .conversation-thread strong { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; font-size: 14px; font-weight: 450; }
.simple-sidebar .conversation-thread small { font-size: 11px; color: var(--muted); }
.simple-sidebar-footer { margin-top: auto; padding-top: 22px; }
.simple-settings-button { width: 100%; display: flex; align-items: center; gap: 10px; padding: 10px 12px; font-size: 14px; background: none; border: 0; text-align: left; cursor: pointer; border-radius: 8px; }
.simple-settings-button:hover { background: var(--surface-3); }
.simple-sidebar-footer > small { display: block; padding: 9px 12px 0; font-size: 12px; color: var(--muted); }
.simple-account-actions { display: flex; gap: 16px; padding: 0 12px; }
.simple-account-actions button { border: 0; padding: 3px 0; color: var(--muted); font-size: 12px; background: none; cursor: pointer; }
.simple-app .workspace { --page-content-max: 1200px; --page-content-half: 600px; --page-gutter: 30px; min-width: 0; }
.simple-app .topbar, .simple-app .workspace:has(#view-conversation-chat.active) > .topbar { position: sticky; top: 0; display: flex; flex-shrink: 0; align-items: center; gap: 16px; height: calc(68px + env(safe-area-inset-top)); min-height: calc(68px + env(safe-area-inset-top)); padding: env(safe-area-inset-top) 30px 0; background: var(--bg); border: 0; backdrop-filter: none; z-index: 8; }
.simple-project-title { border: 0; padding: 0; font-size: 16px; font-weight: 550; background: none; cursor: pointer; max-width: 45%; text-overflow: ellipsis; overflow: hidden; white-space: nowrap; }
.simple-conversation-title { min-width: 0; padding-left: 16px; border-left: 1px solid var(--line); overflow: hidden; white-space: nowrap; text-overflow: ellipsis; font-size: 13px; color: var(--muted); }
.simple-conversation-title:empty { display: none; }
.simple-app .top-actions { margin-left: auto; display: flex; flex: 0 0 auto; gap: 5px; }
.simple-app .icon-button { width: 40px; height: 40px; flex: 0 0 40px; display: grid; place-items: center; border: 0; border-radius: 10px; background: transparent; color: var(--muted); }
.simple-app .icon-button:hover { background: var(--surface-3); color: var(--text); }
.simple-app .icon-button svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.65; stroke-linecap: round; stroke-linejoin: round; }
.simple-app .simple-mobile-menu, .simple-app .simple-sidebar-close { display: none; }
.simple-app .simple-view-title { display: none; }
.simple-app .app-shell:not([data-view="conversation-chat"]) .simple-view-title { display: block; margin: 0; font-size: 18px; }
.simple-app .app-shell:not([data-view="conversation-chat"]) .simple-project-title,
.simple-app .app-shell:not([data-view="conversation-chat"]) .simple-conversation-title { display: none; }
.simple-app .workspace > main { padding: 22px 30px 40px; }
.simple-app .workspace:has(#view-conversation-chat.active) { height: var(--simple-visible-height, 100dvh); }
.simple-app .workspace:has(#view-conversation-chat.active) > main { padding: 0; max-width: none; }
.simple-app #sectionNavigation { gap: 10px; display: flex; margin-bottom: 22px; }
.simple-app .section-nav-item { border: 0; background: transparent; color: var(--muted); font-size: 13px; padding: 7px 0; margin-right: 14px; min-height: 40px; }
.simple-app .section-nav-item:hover { color: var(--text); }
.simple-app .section-intro .eyebrow, .simple-app .platform-action-permission-hint:empty { display: none; }
.simple-app .section-intro h2 { font-size: 22px; font-weight: 550; }
.simple-app .section-intro p { color: var(--muted); font-size: 14px; }
.simple-app .button.primary { background: var(--cyan); color: var(--ui-on-primary); border-color: var(--cyan); box-shadow: none; }
.simple-app .button.primary:hover:not(:disabled) { background: #91f3e9; box-shadow: none; }
.simple-app .button.ghost { color: var(--text); border-color: var(--line); background: transparent; }
.simple-app .button.ghost:hover:not(:disabled) { background: var(--surface-3); border-color: var(--line-strong); }
.simple-app input, .simple-app select, .simple-app textarea { color: var(--text); background: var(--ui-raised); border-color: var(--line); }
.simple-app input:focus, .simple-app select:focus, .simple-app textarea:focus { border-color: var(--cyan); box-shadow: none; }
.simple-app .conversation-runtime-profile { background: var(--surface); }
.simple-app .form-error { color: var(--red); }
.simple-app .modal { background: var(--surface-2); color: var(--text); border-color: var(--line); border-radius: 20px; max-height: calc(var(--simple-visible-height, 100dvh) - 28px); box-shadow: var(--shadow); }
.simple-app .modal::backdrop { background: rgba(0,0,0,.6); backdrop-filter: blur(2px); }
.simple-app .modal label { color: var(--muted); font-size: 13px; }
.simple-app .modal-head { align-items: center; }
.simple-app .modal-head h2 { font-weight: 550; }
.simple-app .conversation-dialog { width: 520px; max-width: calc(100vw - 32px); padding: 20px 22px; }
.simple-app .conversation-dialog form { padding: 0; }
.simple-app .auth-gate { background: var(--ui-raised); backdrop-filter: none; }
.simple-app .auth-card, .simple-app .setup-card { background: var(--surface-2); border-color: var(--line); box-shadow: var(--shadow); }
.simple-app .auth-card h1 { font-size: 24px; font-weight: 550; }
.simple-app .auth-card label, .simple-app .setup-fields label { color: var(--muted); font-size: 13px; }
.simple-app .brand-mark, .simple-app .brand-mark::before { border-color: var(--cyan); box-shadow: none; }
.simple-app .brand-mark::after { box-shadow: none; background: var(--cyan); }
.simple-app .setup-shell { display: block; min-height: auto; width: min(100%, 480px); padding: 22px; margin: auto; }
.simple-app .setup-intro { display: none; }
.simple-app .setup-stage { display: block; min-height: auto; padding: 0; }
.simple-app .setup-card { width: 100%; padding: 28px; border-radius: 20px; }
.simple-app .setup-card h2 { font-size: 24px; }
.simple-app .setup-status { display: none; }
.simple-app .setup-security { background: var(--ui-raised); border-color: var(--line); color: var(--muted); }
.simple-app .agp-providers-panel { padding: 0; }
.simple-app #view-conversation-chat .conversation-artifact .conversation-thread { display: flex; width: 100%; max-width: none; flex-direction: row; align-items: center; gap: 12px; }
.simple-app .conversation-artifact .conversation-thread > span { min-width: 0; flex: 1; overflow-wrap: anywhere; font-size: 12px; }
.simple-app .conversation-artifact .conversation-thread > button { flex-shrink: 0; white-space: nowrap; }
.simple-sidebar-scrim { display: none; }
@media (min-width: 1600px) { .simple-app .topbar { padding-left: 42px; padding-right: 42px; } }
@media (max-width: 800px) {
  .simple-app .app-shell { display: block; }
  .simple-app .sidebar { position: fixed; inset: 0 auto 0 0; width: min(300px,85vw); height: var(--simple-visible-height,100dvh); padding: calc(22px + env(safe-area-inset-top)) 16px max(16px,env(safe-area-inset-bottom)); border-top: 0; transform: translateX(-100%); visibility: hidden; transition: transform .18s ease, visibility .18s; }
  .simple-app .sidebar-open .sidebar { transform: translateX(0); visibility: visible; }
  .simple-app .simple-sidebar-scrim { display: block; position: fixed; inset: 0; background: rgba(0,0,0,.6); border: 0; z-index: 29; }
  .simple-app .simple-mobile-menu, .simple-app .simple-sidebar-close { display: grid; }
  .simple-app .simple-sidebar-close { margin-left: auto; width: 32px; height: 32px; flex-basis: 32px; }
  .simple-app .topbar, .simple-app .workspace:has(#view-conversation-chat.active) > .topbar { display: flex; min-height: calc(58px + env(safe-area-inset-top)); height: calc(58px + env(safe-area-inset-top)); padding: env(safe-area-inset-top) 10px 0; gap: 6px; }
  .simple-project-title { max-width: calc(100vw - 175px); font-size: 16px; padding: 0 4px; }
  .simple-conversation-title { display: none; }
  .simple-app .top-actions { gap: 0; }
  .simple-app .top-actions .icon-button { width: 36px; flex-basis: 36px; }
  .simple-app .simple-files-button { display: none; }
  .simple-app .workspace > main { padding: 18px 18px 30px; }
  .simple-app .workspace:has(#view-conversation-chat.active) > main { padding: 0; }
  .simple-app .conversation-dialog { width: 100%; max-width: 100%; margin: auto 0 0; border-radius: 22px 22px 0 0; padding: 20px 19px max(24px, env(safe-area-inset-bottom)); max-height: calc(var(--simple-visible-height,100dvh) - 20px); }
  .simple-app .section-intro { align-items: flex-start; gap: 12px; }
}
@media (prefers-reduced-motion: reduce) { .simple-app .sidebar { transition: none; } }