* { box-sizing: border-box; }
body { margin: 0; font-size: 14px; }
a { color: inherit; text-decoration: none; }
button, a, input { -webkit-tap-highlight-color: transparent; }
button { font: inherit; cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .6; }
svg { width: 19px; height: 19px; flex-shrink: 0; vertical-align: middle; }
:focus-visible { outline: 2px solid var(--pk-mhhcp-blue); outline-offset: 3px; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
.skip { position: fixed; top: -80px; left: 20px; background: var(--pk-purple); color: white; padding: 12px; z-index: var(--pk-z-toast); }
.skip:focus { top: 8px; }
.topbar { height: 76px; padding: 0 24px; display: flex; align-items: center; gap: 32px; border-bottom: 1px solid var(--pk-border-subtle); background: var(--pk-surface-panel); }
/* Keep search aligned with the file pane while the logo has its own clear space. */
.brand { width: 200px; min-height: 44px; flex-shrink: 0; display: flex; align-items: center; }
.brand img { display: block; width: 200px; height: 36px; }
.searchbox { display: flex; align-items: center; gap: 12px; max-width: 600px; width: 100%; height: 44px; background: var(--pk-off-white); border: 1px solid transparent; border-radius: 7px; padding: 0 14px; color: var(--pk-text-secondary); }
.searchbox:focus-within { border-color: var(--pk-border-brand); background: white; box-shadow: var(--pk-focus-ring); }
.searchbox input { background: transparent; border: 0; width: 100%; outline: none; font: inherit; color: var(--pk-text-primary); min-width: 0; }
.searchbox input::placeholder { color: var(--pk-text-secondary); }
kbd { border: 1px solid var(--pk-border-default); padding: 1px 6px; border-radius: 3px; font-size: 12px; }
.app-shell { display: grid; grid-template-columns: 224px minmax(0,1fr); min-height: calc(100dvh - 76px); }
.sidebar { padding: 24px 12px; display: flex; flex-direction: column; border-right: 1px solid var(--pk-border-subtle); height: calc(100dvh - 76px); position: sticky; top: 0; background: var(--pk-off-white); }
.library-nav { display: grid; gap: 4px; }
.nav-link { display: flex; align-items: center; gap: 12px; min-height: 44px; padding: 10px 12px; border-radius: 6px; font-size: 13px; font-weight: 500; transition: background var(--pk-duration-fast); }
.nav-link:hover { background: var(--pk-surface-panel-muted); }
.nav-link.active { background: var(--pk-surface-brand-soft); color: var(--pk-purple); font-weight: 600; }
.nav-link svg { width: 18px; height: 18px; }
.source-panel { margin-top: auto; padding: 18px 10px 0; border-top: 1px solid var(--pk-border-subtle); display: flex; align-items: flex-start; flex-direction: column; gap: 6px; font-size: 11px; color: var(--pk-text-secondary); white-space: nowrap; }
.offline { color: var(--pk-danger-red); }
dialog { width: min(480px, calc(100% - 32px)); padding: 28px; border: 1px solid var(--pk-border-default); border-radius: 8px; color: var(--pk-text-primary); background: var(--pk-surface-panel); box-shadow: var(--pk-shadow-md); }
dialog::backdrop { background: rgb(30 30 30 / 45%); }
dialog h2 { font-size: 20px; font-weight: 600; margin: 0 0 16px; }
dialog p { line-height: 1.6; margin: 0 0 16px; overflow-wrap: anywhere; }
.confirm-file { color: var(--pk-text-secondary); font-size: 13px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 24px; }
.editor { border-top: 1px solid var(--pk-border-default); padding-top: 24px; }
.editor label { display: block; font-size: 12px; color: var(--pk-text-secondary); margin-bottom: 10px; }
#note-editor { display: block; width: 100%; min-height: 60vh; resize: vertical; padding: 20px; border: 1px solid var(--pk-border-default); border-radius: 6px; background: var(--pk-surface-panel); color: var(--pk-text-primary); font: 14px/1.7 ui-monospace, SFMono-Regular, Menlo, monospace; tab-size: 2; }
.edit-error { color: var(--pk-danger-red); font-size: 13px; line-height: 1.6; margin-top: 14px; }
.sync-notice { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; background: var(--pk-surface-warning-soft); padding: 12px 16px; margin-bottom: 20px; font-size: 13px; }
main { padding: 30px 32px 50px; min-width: 0; background: var(--pk-surface-panel); }
main:focus { outline: none; }
.breadcrumbs { display: flex; align-items: center; gap: 8px; font-size: 12px; min-height: 24px; flex-wrap: wrap; color: var(--pk-text-secondary); margin-bottom: 24px; }
.breadcrumbs svg { width: 12px; height: 12px; }
.breadcrumbs a { overflow-wrap: anywhere; }
.breadcrumbs a:hover { color: var(--pk-purple); text-decoration: underline; }
.breadcrumbs a[aria-current] { color: var(--pk-text-primary); }
.page-heading { display: flex; justify-content: space-between; align-items: center; gap: 24px; margin-bottom: 28px; }
h1 { font-size: 24px; line-height: 1.35; font-weight: 600; margin: 0; overflow-wrap: anywhere; }
#subtitle { color: var(--pk-text-secondary); font-size: 12px; margin: 9px 0 0; }
#subtitle:empty { display: none; }
.actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; flex-shrink: 0; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-height: 36px; padding: 8px 11px; border: 1px solid var(--pk-border-default); background: white; border-radius: 6px; font-size: 12px; color: var(--pk-text-primary); transition: background var(--pk-duration-fast), border-color var(--pk-duration-fast); white-space: nowrap; }
.button:hover { background: var(--pk-surface-brand-soft); border-color: var(--pk-border-brand); }
.button svg { width: 15px; height: 15px; }
.button.primary { background: var(--pk-purple); color: white; border-color: var(--pk-purple); }
.icon-button { width: 36px; padding: 8px; }
.file-table { width: 100%; }
.table-head, .file-row { display: grid; grid-template-columns: minmax(0,1fr) 105px 115px 72px 20px; gap: 16px; align-items: center; }
.table-head { border-top: 1px solid var(--pk-border-subtle); border-bottom: 1px solid var(--pk-border-default); height: 42px; color: var(--pk-text-secondary); font-size: 11px; padding: 0 12px; background: var(--pk-off-white); }
.file-row { min-height: 49px; border-bottom: 1px solid var(--pk-border-subtle); padding: 10px 12px; font-size: 13px; transition: background var(--pk-duration-fast); }
.file-row:hover, .file-row:focus-visible { background: var(--pk-surface-brand-soft); }
.file-name { display: flex; align-items: center; min-width: 0; gap: 13px; }
.file-icon { width: 25px; display: grid; place-items: center; flex-shrink: 0; color: var(--pk-text-secondary); }
.folder-icon { color: var(--pk-purple); }
.folder-icon svg { fill: var(--pk-surface-brand-soft); }
.file-title { overflow-wrap: anywhere; line-height: 1.5; }
.file-title small { color: var(--pk-text-secondary); display: block; font-size: 11px; }
.file-type, .file-date, .file-size { color: var(--pk-text-secondary); font-size: 12px; }
.file-size { text-align: right; font-variant-numeric: tabular-nums; }
.row-chevron svg { width: 14px; color: var(--pk-text-secondary); }
.loading { display: flex; justify-content: center; align-items: center; gap: 12px; min-height: 260px; color: var(--pk-text-secondary); }
.reader { border-top: 1px solid var(--pk-border-default); padding-top: 30px; }
.document { font-size: 15px; line-height: 1.8; max-width: 790px; margin: 0 auto; overflow-wrap: anywhere; padding: 10px 16px 50px; }
.document h1 { font-size: 28px; color: var(--pk-purple); margin: 8px 0 24px; }
.document h2 { font-size: 21px; font-weight: 600; margin: 36px 0 16px; }
.document h3 { font-size: 17px; font-weight: 600; margin: 28px 0 12px; }
.document a { color: var(--pk-purple); text-decoration: underline; text-underline-offset: 3px; }
.document p { margin: 0 0 18px; }
.document ul, .document ol { padding-left: 24px; }
.document li { margin: 5px 0; }
.document img { max-width: 100%; height: auto; display: block; margin: 20px auto; }
.document pre, .raw { white-space: pre-wrap; word-break: break-word; background: var(--pk-off-white); padding: 20px; font-size: 12px; line-height: 1.8; border-radius: 6px; overflow-x: auto; }
.document code { background: var(--pk-off-white); font-size: .88em; padding: 2px 4px; border-radius: 3px; }
.document pre code { padding: 0; }
.document blockquote { border-left: 3px solid var(--pk-hcp-cyan); margin: 22px 0; padding: 8px 20px; color: var(--pk-text-secondary); }
.document blockquote p { margin: 0; }
.document table { border-collapse: collapse; display: block; overflow-x: auto; font-size: 13px; margin: 20px 0; }
.document td, .document th { padding: 10px 12px; border: 1px solid var(--pk-border-default); min-width: 110px; text-align: left; }
.document th { background: var(--pk-off-white); }
.document hr { border: 0; border-top: 1px solid var(--pk-border-default); margin: 30px 0; }
.unresolved, .image-unavailable { color: var(--pk-text-secondary); border-bottom: 1px dotted var(--pk-border-strong); }
.metadata { max-width: 790px; margin: 0 auto; border-top: 1px solid var(--pk-border-default); padding: 16px; color: var(--pk-text-secondary); font-size: 12px; }
.metadata summary { cursor: pointer; }
.metadata pre { white-space: pre-wrap; }
.pdf { width: 100%; height: 73vh; border: 1px solid var(--pk-border-default); border-radius: 5px; }
.image-preview { text-align: center; padding: 24px; }
.image-preview img { max-width: 100%; max-height: 75vh; object-fit: contain; }
.empty { min-height: 300px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px; text-align: center; padding: 20px; }
.empty h2 { font-size: 18px; font-weight: 500; margin: 0; }
.empty p { font-size: 13px; color: var(--pk-text-secondary); }
#error { padding: 14px 16px; background: var(--pk-surface-warning-soft); border-left: 3px solid var(--pk-yellow); margin-bottom: 20px; line-height: 1.5; }
#toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); background: var(--pk-off-black); color: white; font-size: 13px; padding: 13px 18px; border-radius: 6px; box-shadow: var(--pk-shadow-md); z-index: var(--pk-z-toast); max-width: calc(100% - 32px); animation: appear 140ms ease-out; }
@keyframes appear { from { opacity: 0; } to { opacity: 1; } }
@media (max-width: 1200px) { .topbar { gap: 20px; }.brand { width: 204px; }.page-heading { align-items: flex-start; flex-direction: column; gap: 16px; }.actions { justify-content: flex-start; }main { padding: 25px 28px; }.file-row,.table-head { grid-template-columns: minmax(0,1fr) 80px 90px 60px 15px; gap: 12px; } }
@media (max-width: 800px) { .app-shell { grid-template-columns: 210px minmax(0,1fr); }.brand { width: auto; }.topbar { padding: 0 20px; }.file-type,.table-head>span:nth-child(2),.file-size,.table-head>span:nth-child(4) { display: none; }.file-row,.table-head { grid-template-columns: minmax(0,1fr) 85px 15px; }.sidebar { padding: 22px 10px; }.vault-link { padding-left: 3px; font-size: 12px; }.vault-link .vault-icon { padding: 6px; }.source-panel { padding-left: 0; padding-right: 0; } }
@media (max-width: 600px) { .topbar { height: auto; min-height: 118px; padding: 18px 20px; flex-wrap: wrap; gap: 14px; }.brand { width: 100%; }.searchbox { max-width: none; }.searchbox input { font-size: 16px; }.searchbox kbd { display: none; }.app-shell { display: block; }.sidebar { height: auto; position: static; border-right: 0; border-bottom: 1px solid var(--pk-border-default); padding: 10px 20px; }.vault-link { display: none; }.library-nav { display: flex; flex-wrap: wrap; gap: 4px; }.source-panel { border: 0; padding: 10px 12px 0; flex-direction: row; gap: 14px; }main { padding: 22px 20px; }.breadcrumbs { margin-bottom: 18px; }h1 { font-size: 22px; }.page-heading { margin-bottom: 20px; }.actions { gap: 8px; }.button { min-height: 44px; }.file-row { min-height: 64px; padding: 10px 6px; grid-template-columns: minmax(0,1fr) 15px; }.table-head { grid-template-columns: minmax(0,1fr) 15px; }.file-date,.table-head>span:nth-child(3) { display: none; }.document { padding: 0 0 35px; font-size: 16px; }.document h1 { font-size: 24px; }.reader { padding-top: 24px; }.file-name { gap: 10px; } }
@media (prefers-reduced-motion: reduce) { *,*::before,*::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }

.account-controls { display: flex; align-items: center; gap: 12px; margin-left: auto; flex-shrink: 0; }
#account-name { font-size: 12px; color: var(--pk-text-secondary); max-width: 150px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.auth-gate { min-height: calc(100svh - 76px); display: grid; place-items: center; padding: 40px 24px; background: var(--pk-surface-page); }
.auth-content { width: min(100%, 520px); text-align: center; }
.auth-content .prekure-signin-card { --prekure-auth-purple: var(--pk-purple); --prekure-auth-yellow: var(--pk-yellow); --prekure-auth-off-black: var(--pk-off-black); --prekure-auth-white: var(--pk-surface-panel); }
.auth-content .prekure-signin-button { font-weight: var(--pk-font-semibold); }
.signin-error { font-size: var(--pk-text-md); color: var(--pk-danger-red); line-height: var(--pk-leading-body); margin: 24px 0 0; }
.submission-loading-surface { position: relative; overflow: hidden; }
.submission-loading-bar { position: absolute; inset: 0 0 auto; height: 4px; overflow: hidden; background: var(--pk-surface-brand-soft); opacity: 0; pointer-events: none; transition: opacity 160ms ease; }
.submission-loading-bar span { position: absolute; inset-block: 0; left: 0; width: 42%; border-radius: var(--pk-radius-pill); background: var(--pk-purple); animation: submission-loading-slide 1400ms cubic-bezier(.4,0,.2,1) infinite; }
.submission-loading-surface.is-submitting .submission-loading-bar { opacity: 1; }
@keyframes submission-loading-slide { from { transform: translateX(-105%); } to { transform: translateX(345%); } }
@media (prefers-reduced-motion: reduce) { .submission-loading-bar span { animation: none; width: 100%; } }
.auth-content .loading { min-height: 160px; }
@media (max-width: 800px) { #account-name { display: none; } .account-controls { gap: 0; } }
@media (max-width: 600px) { .topbar .brand { width: auto; flex: 1; } .searchbox { order: 3; flex-basis: 100%; } .account-controls { margin-left: 0; } .topbar:has(.searchbox[hidden]) { height: 76px; min-height: 76px; padding-block: 0; } }
@media (max-width: 360px) { .auth-gate { padding: 24px 16px; } .auth-content .prekure-signin-button { font-size: var(--pk-text-md); gap: 12px; } .auth-content .prekure-signin-button-icon, .auth-content .prekure-signin-button-icon svg { width: 24px; height: 24px; } }