.companion-mode body { min-width: 280px; }
.companion-mode .app-header, .companion-mode .app-main,
.companion-mode #start-tutorial { display: none !important; }
.companion-panel { display: none; padding: 12px 16px; }
.is-authenticated .companion-panel { display: flex; flex-direction: column; gap: 12px; min-height: 100vh; }
.companion-heading { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.companion-heading h1 { font-size: 18px; margin: 0; }
.companion-heading p { color: var(--muted); font-size: 12px; margin: 2px 0 0; }
.companion-menu { position: relative; }
.companion-menu summary { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 12px; cursor: pointer; list-style: none; background: var(--surface); }
.companion-menu summary::-webkit-details-marker { display: none; }
.companion-menu summary:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.companion-menu summary:hover { border-color: var(--primary); }
.companion-tools { position: absolute; inset-inline-end: 0; top: calc(100% + 8px); z-index: 20; width: 224px; max-width: calc(100vw - 32px); display: grid; grid-template-columns: 1fr; gap: 4px; padding: 8px; border: 1px solid var(--line); border-radius: 20px; background: var(--surface-solid, #fff); box-shadow: var(--shadow-md); }
.companion-add { display: flex; gap: 8px; }
.companion-add input { min-width: 0; flex: 1; min-height: 44px; padding: 8px 12px; font: inherit; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 12px; }
.companion-add input:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.companion-add .button { flex: 0 0 44px; min-height: 44px; padding: 8px; font-size: 22px; }
.companion-tools .button, .companion-footer .button { min-height: 44px; padding: 8px; white-space: normal; }
.companion-mode .companion-tools .button, .companion-mode .companion-footer .button, .install-page .install-nav .button { color: var(--ink); }
.companion-mode .companion-tools .button:hover, .companion-mode .companion-footer .button:hover { background: var(--surface); color: var(--ink); }
.companion-tools [aria-pressed="true"] { background: var(--primary-soft); border-color: var(--primary); }
.companion-count { margin: 0; color: var(--muted); font-size: 13px; }
.companion-tasks { display: grid; gap: 8px; }
.companion-task { display: flex; align-items: flex-start; gap: 12px; padding: 16px 12px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); cursor: pointer; overflow-wrap: anywhere; }
.companion-task:hover { border-color: var(--primary); }
.companion-task:focus-within { outline: 2px solid var(--primary); outline-offset: 2px; }
.companion-task input { width: 20px; height: 20px; flex: 0 0 20px; margin: 1px 0; accent-color: var(--primary); }
.companion-task input:checked + span { text-decoration: line-through; color: var(--muted); }
.companion-task:has(input:disabled) { opacity: .65; cursor: wait; }
.companion-empty { padding: 24px 16px; background: var(--surface); border: 1px dashed var(--line-strong); border-radius: 16px; color: var(--muted); }
.companion-footer { margin-top: auto; display: flex; flex-wrap: wrap; gap: 4px; border-top: 1px solid var(--line); padding-top: 12px; }
.companion-mode .auth-screen { padding: 12px; overflow: auto; }
.companion-mode .auth-card { padding: 20px; }
.companion-mode .connection-banner { position: static; margin: 8px; }
.companion-mode .toast { max-width: calc(100vw - 24px); }
.install-page { max-width: 1000px; margin: auto; padding: 32px 24px 64px; }
.install-nav { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 56px; }
.install-layout { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
.install-copy h1 { font-size: clamp(28px, 4vw, 42px); line-height: 1.2; margin: 12px 0 20px; }
.install-copy p { color: var(--muted); line-height: 1.7; }
.install-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0 12px; }
.install-caption { font-size: 13px; }
.install-actions [aria-disabled="true"] { opacity: .55; cursor: not-allowed; }
.install-preview { display: grid; grid-template-columns: 1fr 1.15fr; min-height: 330px; background: var(--surface-soft); border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow-sm); overflow: hidden; }
.install-preview aside { padding: 20px 12px; border-inline-end: 1px solid var(--line); background: var(--surface); }
.install-preview h2 { margin: 8px 0 20px; font-size: 18px; }
.preview-task { padding: 12px 0; display: flex; gap: 8px; font-size: 13px; border-bottom: 1px solid var(--line); }
.preview-task span:first-child { color: var(--primary); }
.preview-work { padding: 20px 16px; color: var(--muted); font-size: 13px; }
.preview-line { height: 8px; border-radius: 8px; background: var(--line); margin-top: 20px; }
.preview-line:nth-child(odd) { width: 70%; }
.install-steps { margin-top: 48px; border-top: 1px solid var(--line); padding-top: 24px; }
.install-steps ol { padding-inline-start: 24px; }
.install-steps li { margin: 16px 0; padding-inline-start: 8px; }
.install-page a:focus-visible { outline: 2px solid var(--primary); outline-offset: 4px; }
@media(max-width: 700px) { .install-layout { grid-template-columns: 1fr; gap: 28px; } .install-nav { margin-bottom: 32px; } .install-page { padding: 20px 16px 40px; } }
@media(forced-colors: active) { .companion-task:focus-within { outline-color: Highlight; } }