/* Liubai article studio — app chrome on liubai-tokens.css. Layout: one focused column for long-form editing.
   Not themed here: the article body's reading typography (#richBody sizes/line-height) and exported HTML. */
:root{--art-col:800px;
 --art-chevron:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E")}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{background:var(--lb-bg)}
body{margin:0;background:var(--lb-bg);color:var(--lb-text);font:var(--lb-weight-regular) var(--lb-text-md)/var(--lb-leading-body) var(--lb-font-sans);-webkit-font-smoothing:antialiased;overflow-wrap:break-word}
::selection{background:var(--lb-light-silver);color:var(--lb-obsidian)}
a{color:var(--lb-text);text-decoration:underline;text-decoration-color:var(--lb-icon);text-underline-offset:3px}
:focus-visible{outline:2px solid var(--lb-focus);outline-offset:2px}
h1,h2,h3{color:var(--lb-text-strong);font-weight:var(--lb-weight-semibold);line-height:var(--lb-leading-tight);margin:0;text-wrap:balance}
small,.hint{color:var(--lb-text-muted);font-size:var(--lb-text-xs);font-weight:var(--lb-weight-regular);line-height:1.6}
.hint{margin:var(--lb-space-2) 0 0}
small{margin-left:var(--lb-space-1)}

/* Header: brand + drafts on the left, account tools on the right */
header{display:flex;align-items:center;gap:var(--lb-gap-inline);padding:var(--lb-space-3) var(--lb-space-6);border-bottom:1px solid var(--lb-divider);background:var(--lb-bg)}
.logo{order:0;display:flex;align-items:center;gap:var(--lb-space-3);min-height:var(--lb-touch);color:var(--lb-text-strong);text-decoration:none;font-size:20px;font-weight:var(--lb-weight-semibold);letter-spacing:.3em}
.logo span{font-size:var(--lb-text-xs);font-weight:var(--lb-weight-regular);letter-spacing:.08em;color:var(--lb-text-muted)}
#showDrafts{order:1;margin-right:auto;white-space:nowrap}
#accountButton{order:3;background:transparent;border-color:transparent;color:var(--lb-text-secondary)}
#accountButton:hover{background:var(--lb-ghost-hover);color:var(--lb-text)}
#draftCount{display:inline-grid;place-items:center;min-width:22px;height:22px;padding:0 6px;margin-left:var(--lb-space-1);border:1px solid var(--lb-border);border-radius:var(--lb-radius-pill);font-size:var(--lb-text-xs);color:var(--lb-text-secondary)}

main{max-width:calc(var(--art-col) + 48px);margin:0 auto;padding:var(--lb-space-12) var(--lb-space-6) var(--lb-space-10)}
.eyebrow,.step{font-size:var(--lb-text-xs);letter-spacing:var(--lb-tracking-label);color:var(--lb-text-muted);text-transform:uppercase}
.intro{margin:0 0 var(--lb-space-16)}
.intro h1{font-size:var(--lb-text-2xl);margin:var(--lb-space-3) 0 var(--lb-space-2)}
h1 em{font-style:normal;color:inherit}
.intro p{color:var(--lb-text-secondary);margin:0}

/* Surfaces: one quiet card per step; anything nested inside a card is flattened (no card in card) */
.workspace{display:block}
.panel{background:var(--lb-surface);border:1px solid var(--lb-divider);border-radius:var(--lb-radius-lg);padding:var(--lb-pad-card-lg);min-width:0;margin:0 0 var(--lb-space-8)}
.panel .panel{background:none;border:0;border-top:1px solid var(--lb-divider);border-radius:0;padding:var(--lb-space-8) 0 0;margin:var(--lb-space-8) 0 0}
.panel h2{font-size:var(--lb-text-xl);margin:0 0 var(--lb-space-2)}
.editor-head{display:flex;align-items:center;justify-content:space-between;gap:var(--lb-gap-inline);flex-wrap:wrap;padding-bottom:var(--lb-space-5);margin-bottom:var(--lb-space-5);border-bottom:1px solid var(--lb-divider)}
.editor-head .step{margin:0;text-transform:none;letter-spacing:0;font-size:var(--lb-text-xs);color:var(--lb-text-secondary);border:1px solid var(--lb-border);border-radius:var(--lb-radius-pill);padding:3px 10px}
.editor-head>.actions{margin:0}
.step{margin:0 0 var(--lb-space-5)}

/* Fields */
label{display:block;font-size:var(--lb-text-ui);font-weight:var(--lb-weight-semibold);color:var(--lb-text);margin:var(--lb-space-6) 0 var(--lb-space-2)}
input,textarea,select{display:block;width:100%;min-width:0;min-height:var(--lb-control-h);font:inherit;font-size:var(--lb-text-input);color:var(--lb-text);background:var(--lb-surface-sunken);border:1px solid var(--lb-border-strong);border-radius:var(--lb-radius-md);padding:10px var(--lb-space-3);transition:border-color var(--lb-duration-fast) var(--lb-ease)}
input:hover,textarea:hover,select:hover{border-color:var(--lb-icon)}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--lb-focus);box-shadow:0 0 0 1px var(--lb-focus)}
input::placeholder,textarea::placeholder{color:var(--lb-text-muted);opacity:1}
input[type=file]{padding:8px;font-size:var(--lb-text-sm)}
input[type=file]::file-selector-button{font:inherit;font-size:var(--lb-text-ui);margin-right:var(--lb-space-3);min-height:32px;padding:0 var(--lb-space-3);border:1px solid var(--lb-border-strong);border-radius:var(--lb-radius-md);background:transparent;color:var(--lb-text);cursor:pointer}
textarea{resize:vertical;line-height:1.7}
select{appearance:none;-webkit-appearance:none;padding-right:38px;background-image:linear-gradient(45deg,transparent 50%,var(--lb-icon) 50%),linear-gradient(135deg,var(--lb-icon) 50%,transparent 50%);background-position:calc(100% - 20px) 52%,calc(100% - 15px) 52%;background-size:5px 5px;background-repeat:no-repeat}
.row{display:grid;grid-template-columns:1fr 1fr;gap:var(--lb-space-4)}
.row select{font-size:var(--lb-text-input)}
hr{border:0;border-top:1px solid var(--lb-divider);margin:var(--lb-space-8) 0}

/* Disclosure rows: frameless, hairline separators, chevron on the right */
details{border-top:1px solid var(--lb-divider);margin:var(--lb-space-6) 0 0}
details+details{margin-top:0}
summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:var(--lb-space-3);min-height:var(--lb-touch);cursor:pointer;font-size:var(--lb-text-ui);font-weight:var(--lb-weight-semibold);color:var(--lb-text)}
summary::-webkit-details-marker{display:none}
summary::after{content:"";flex:none;width:16px;height:16px;background:var(--lb-icon);-webkit-mask:var(--art-chevron) center/contain no-repeat;mask:var(--art-chevron) center/contain no-repeat;transition:transform var(--lb-duration) var(--lb-ease)}
details[open]>summary::after{transform:rotate(180deg)}
details[open]{padding-bottom:var(--lb-space-5)}
.editor details textarea{margin-top:var(--lb-space-3)}

/* Buttons: secondary (default) outline; .primary rendered material, one per step; text buttons for low emphasis */
button,.file{font:inherit;font-size:var(--lb-text-ui);font-weight:var(--lb-weight-medium);color:var(--lb-secondary-text);background:var(--lb-secondary-bg);border:1px solid var(--lb-border-strong);border-radius:var(--lb-radius-md);min-height:var(--lb-control-h);padding:0 var(--lb-space-4);display:inline-flex;align-items:center;justify-content:center;gap:var(--lb-space-2);cursor:pointer;transition:background var(--lb-duration-fast) var(--lb-ease),border-color var(--lb-duration-fast) var(--lb-ease)}
button:hover,.file:hover{background:var(--lb-secondary-bg-hover)}
button:disabled{opacity:.45;cursor:not-allowed}
.primary{background:var(--lb-primary-fill);color:var(--lb-primary-text);border-color:transparent;box-shadow:var(--lb-primary-shadow);font-weight:var(--lb-weight-semibold)}
.primary:hover{background:var(--lb-primary-fill-hover)}
.subtle{background:transparent;border-color:transparent;color:var(--lb-text-secondary)}
.actions{display:flex;align-items:center;justify-content:flex-start;flex-wrap:wrap;gap:var(--lb-gap-inline);margin-top:var(--lb-space-5)}
.actions .primary{width:auto;margin:0}
.file{margin:0}
.file input{display:none}
aside.panel>button{margin-top:var(--lb-space-6)}
aside.panel>#generate{width:100%}
aside.panel>button:first-child{margin:0 0 var(--lb-space-6)}
/* One primary per step: "next step" in the editor, "generate" in AI. Others drop to secondary or text. */
#saveBottom.primary,#publish.primary,aside.panel>button.primary:first-child{background:transparent;border:1px solid var(--lb-border-strong);color:var(--lb-text);box-shadow:none;font-weight:var(--lb-weight-medium)}
#saveBottom.primary:hover,#publish.primary:hover,aside.panel>button.primary:first-child:hover{background:var(--lb-secondary-bg-hover)}
#clearArticle,#clearBottom,#showDraftsBottom,#undoEdit,#removeCover{background:transparent;border-color:transparent;color:var(--lb-text-secondary)}
#clearArticle:hover,#clearBottom:hover,#showDraftsBottom:hover,#undoEdit:hover,#removeCover:hover{background:var(--lb-ghost-hover);color:var(--lb-text)}
#preview{display:inline-flex;align-items:center;min-height:var(--lb-touch);font-size:var(--lb-text-ui)}

/* Editor surface. Container follows the theme; reading typography stays as authored (not themed). */
.format-bar{display:flex;flex-wrap:wrap;gap:var(--lb-space-2);margin:0 0 var(--lb-space-3)}
.format-bar button{padding:0 var(--lb-space-3)}
#richBody{min-height:430px;background:var(--lb-surface-sunken);border:1px solid var(--lb-border-strong);border-radius:var(--lb-radius-md);padding:24px;line-height:1.95;overflow-wrap:anywhere;color:var(--lb-text)}
#richBody:focus{outline:none;border-color:var(--lb-focus);box-shadow:0 0 0 1px var(--lb-focus)}
#richBody:empty:before{content:attr(data-placeholder);color:var(--lb-text-muted)}
#richBody h2{font-size:23px;line-height:1.5;margin-top:28px;color:var(--lb-text-strong)}
#richBody p{margin:0 0 18px}
.editor #body{min-height:380px}
.title-input{font-size:25px;font-weight:600}
#rewriteMode{width:auto;max-width:100%}
#rewriteBefore{color:var(--lb-text-secondary);white-space:pre-wrap}
#quality{margin-top:var(--lb-space-5);padding:var(--lb-space-2) var(--lb-space-4);border-left:2px solid var(--lb-marker)}
#checks{margin-top:var(--lb-space-3)}
#history{font-size:var(--lb-text-sm);color:var(--lb-text-secondary);padding-left:18px}
#file{font-size:var(--lb-text-sm)}

/* Search result illustration (simulates a search listing; title uses the info tone) */
.search-preview{margin-top:var(--lb-space-5);background:var(--lb-surface-sunken);border:1px solid var(--lb-divider);border-radius:var(--lb-radius-md);padding:var(--lb-space-4);overflow-wrap:anywhere}
.search-preview h3{color:var(--lb-info);margin:var(--lb-space-2) 0;font-weight:var(--lb-weight-medium);font-size:var(--lb-text-lg)}
.search-preview p{margin:0;font-size:var(--lb-text-sm);color:var(--lb-text-secondary)}
#searchUrl{font-size:var(--lb-text-xs);color:var(--lb-text-secondary);margin-top:var(--lb-space-2)}

/* Drafts dialog and library */
dialog{width:min(640px,calc(100% - 32px));max-height:85vh;background:var(--lb-surface);color:var(--lb-text);border:0;border-radius:var(--lb-radius-xl);box-shadow:var(--lb-shadow-overlay);padding:var(--lb-space-6)}
dialog::backdrop{background:var(--lb-overlay)}
dialog h2{margin:0;font-size:var(--lb-text-xl)}
dialog .editor-head{margin-bottom:var(--lb-space-3)}
#draftSearch{margin-top:var(--lb-space-4)}
#library{display:grid;gap:0;margin-top:var(--lb-space-4);border-top:1px solid var(--lb-divider)}
#library button{display:block;width:100%;text-align:left;min-height:56px;padding:var(--lb-space-3) var(--lb-space-2);background:transparent;border:0;border-bottom:1px solid var(--lb-divider);border-radius:0;overflow-wrap:anywhere;font-weight:var(--lb-weight-regular)}
#library button:hover{background:var(--lb-ghost-hover)}
#library button.active{background:var(--lb-selected-bg);box-shadow:inset 2px 0 0 var(--lb-marker)}
#versions{display:grid;gap:var(--lb-space-2);margin-top:var(--lb-space-3)}

/* Footer status line (role=status) */
footer{display:flex;justify-content:space-between;align-items:center;gap:var(--lb-space-4);flex-wrap:wrap;margin-top:var(--lb-space-8);padding-top:var(--lb-space-5);border-top:1px solid var(--lb-divider);color:var(--lb-text-muted);font-size:var(--lb-text-xs)}
#status.error{color:var(--lb-danger)}
.themetoggle{font-size:var(--lb-text-xs);border-color:var(--lb-border);color:var(--lb-text-secondary)}
.badge{font-size:var(--lb-text-xs);color:var(--lb-text-secondary)}

@media(max-width:760px){
 .intro{margin-bottom:var(--lb-space-12)}
 header{flex-wrap:wrap;padding:var(--lb-space-2) var(--lb-space-5);row-gap:0}
 .logo span{display:block;font-size:var(--lb-text-xs);letter-spacing:calc(var(--lb-tracking-label) / 2)}
 #showDrafts{margin:0 0 0 auto}
 #accountButton{margin-left:auto}
 main{padding:var(--lb-space-8) var(--lb-space-5) var(--lb-space-8)}
 .panel{padding:var(--lb-pad-card)}
 .row{grid-template-columns:1fr}
 .format-bar{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}
 .editor>.actions{flex-direction:column;align-items:stretch}
 .editor>.actions>*{width:100%}
 #rewriteMode{width:100%}
 footer{align-items:flex-start;flex-direction:column}
 .themetoggle{min-height:var(--lb-touch)}
}
@media (prefers-reduced-motion:reduce){*{transition-duration:0ms!important}}