/* Default light theme variables */
:root {
  --bg: #ffffff;
  --panel: #ffffff;
  --text: #111827;
  --muted: #475569;
  --primary: #0ea5e9;
  --accent: #bae6fd;
  --border: #e5e7eb;
}

/* Light theme variables (explicit) */
html[data-theme="light"] {
  --bg: #ffffff;
  --panel: #ffffff;
  --text: #111827;
  --muted: #475569;
  --primary: #0ea5e9;
  --accent: #bae6fd;
  --border: #e5e7eb;
}

/* Light theme overrides for consistency */
html[data-theme="light"] .page #viewer {
  border: 1px solid var(--border) !important;
  border-radius: 12px !important;
  background: #ffffff !important;
}

html[data-theme="light"] .page #viewer iframe {
  background: #ffffff !important;
}

html[data-theme="light"] .page #viewer * {
  background: #ffffff !important;
}

html[data-theme="light"] .page {
  padding: 16px !important;
}

html[data-theme="light"] .toc.folded {
  width: 18px !important;
  flex: 0 0 18px !important;
}

html[data-theme="light"] .reader-stage {
  background: #ffffff !important;
}

/* Dark theme variables */
html[data-theme="dark"] {
  --bg: #111827;
  --panel: #111827;
  --text: #f9fafb;
  --muted: #9ca3af;
  --primary: #0ea5e9;
  --accent: #7c3aed;
  --border: #374151;
}

/* Dark theme overrides for consistency */
html[data-theme="dark"] .app-header {
  background-color: #111827 !important;
}

html[data-theme="dark"] .reader-toolbar {
  background-color: #111827 !important;
}

html[data-theme="dark"] .page #viewer {
  border: 1px solid var(--border) !important;
  border-radius: 12px !important;
  background: #111827 !important;
}

html[data-theme="dark"] .page #viewer iframe {
  background: #111827 !important;
}

html[data-theme="dark"] .page #viewer * {
  background: #111827 !important;
}

html[data-theme="dark"] .page {
  padding: 16px !important;
}

html[data-theme="dark"] .toc.folded {
  width: 18px !important;
  flex: 0 0 18px !important;
}

html[data-theme="dark"] .reader-stage {
  background: #111827 !important;
}

/* Sepia theme variables - warm, elegant, less green */
html[data-theme="sepia"] {
  --bg: #f7f3ed;
  --panel: #f7f3ed;
  --text: #3d2f1f;
  --muted: #8b7355;
  --primary: #a67c00;
  --accent: #c49b1a;
  --border: #e0d5c7;
}

/* Force sepia theme on body when active */
html[data-theme="sepia"] body {
  background-color: #f7f3ed !important;
  color: #3d2f1f !important;
}

/* Additional sepia theme overrides */
html[data-theme="sepia"] #app {
  background-color: #f7f3ed !important;
}

html[data-theme="sepia"] .app-header {
  background-color: #f7f3ed !important;
  color: #3d2f1f !important;
}

/* Remove borders in sepia theme */
html[data-theme="sepia"] .toc {
  border-right: none !important;
}

html[data-theme="sepia"] .toc.folded {
  width: 18px !important;
  flex: 0 0 18px !important;
}

html[data-theme="sepia"] .reader-stage {
  background: #f7f3ed !important;
}

html[data-theme="sepia"] .page #viewer {
  border: 1px solid var(--border) !important;
  border-radius: 12px !important;
  background: #f7f3ed !important;
}

html[data-theme="sepia"] .page #viewer iframe {
  background: #f7f3ed !important;
}

html[data-theme="sepia"] .page #viewer * {
  background: #f7f3ed !important;
}

html[data-theme="sepia"] .page #viewer body {
  background: #f7f3ed !important;
}

html[data-theme="sepia"] .page #viewer html {
  background: #f7f3ed !important;
}

html[data-theme="sepia"] .page {
  padding: 16px !important;
}

html[data-theme="sepia"] .reader-toolbar {
  border-bottom: none !important;
}

/* Override page background in sepia theme */
html[data-theme="sepia"] .page {
  background-color: #f7f3ed !important;
}

*{box-sizing:border-box}
html,body,#app{height:100%}
body{
  margin:0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color:var(--text);
  background:var(--bg);
}

.app-header{
  position:sticky;top:0;z-index:10;
  display:flex;align-items:center;gap:16px;
  padding:12px 16px;border-bottom:1px solid var(--border);
  background:var(--bg);
}
/* Header alignment with side panel */
.toc-docked .app-header{ margin-left: 280px; padding-left: 16px }
@media (max-width: 900px){ .toc-docked .app-header{ margin-left: 0; padding-left: 16px } }
/* When folded, shift the entire header by the handle width */
.toc-handle-offset .app-header{ margin-left: 18px; padding-left: 16px }
.brand{font-weight:600}
.brand:hover{cursor:pointer;opacity:.9}
.header-actions{margin-left:auto;display:flex;gap:8px}
.btn{
  background:var(--border);color:var(--text);border:1px solid var(--border);
  padding:8px 12px;border-radius:10px;font:inherit;box-shadow:0 1px 0 rgba(0,0,0,.02)
}
/* Theme toggle and Data menu button specific styling */
#theme-toggle, #data-menu-toggle{
  font-size:18px;padding:10px 14px;min-width:44px;display:flex;align-items:center;justify-content:center;
  background:var(--panel);border:1px solid var(--border);box-shadow:0 2px 4px rgba(0,0,0,.1)
}
#theme-toggle:hover, #data-menu-toggle:hover{
  background:var(--muted);border-color:var(--muted);transform:scale(1.05);transition:all 0.2s ease
}
.btn:hover{border-color:var(--muted);background:var(--border);color:var(--text);cursor:pointer;box-shadow:0 2px 4px rgba(0,0,0,0.1)}
.btn.primary{background:var(--primary);border-color:var(--primary);color:#ffffff}
.btn.primary:hover{border-color:var(--primary);background:var(--primary);opacity:0.8}

/* Inputs */
.input{
  height:36px;padding:0 12px;border:1px solid var(--border);border-radius:10px;background:var(--panel);box-shadow:0 1px 0 rgba(0,0,0,.02);font:inherit;color:var(--text)
}
.input:focus{outline:2px solid #bae6fd;outline-offset:2px}

.router-outlet{height:calc(100% - 57px);overflow-anchor:none}

/* Library */
.library{height:100%;display:flex;flex-direction:column;gap:16px;padding:16px}
.library-toolbar{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.library-toolbar .grow{flex:1; min-width:220px}
.library-grid{
  display:grid;gap:24px 24px;grid-template-columns:repeat(auto-fill, minmax(220px, 1fr));
  padding:0 12px;
}
.card{ margin: 0 6px }

/* When grouped, show each collection on its own row */
.library-grid.grouped{ display:block; padding:0 }
.group-block{ margin-bottom: 24px }
.group-block > .library-grid{ padding:0 12px }
.card{
  background:var(--panel);border:1px solid var(--border);border-radius:14px;overflow:hidden;box-shadow:0 1px 2px rgba(0,0,0,.03);position:relative;cursor:pointer;transition:box-shadow 0.2s ease, transform 0.2s ease
}
.card:hover{
  box-shadow:0 4px 12px rgba(0,0,0,.1);transform:translateY(-2px)
}
.cover{aspect-ratio:3/4;background:#f3f4f6;display:flex;align-items:center;justify-content:center}
.cover img{width:100%;height:100%;object-fit:cover;display:block}
.meta{padding:10px 12px}
.title{font-weight:600}
.author{color:var(--muted);font-size:12px;margin-top:2px;font-style:italic}
.collection{color:var(--muted);font-size:12px;margin-top:2px}

/* Tag chips */
.chip-row{display:flex;gap:6px;flex-wrap:wrap;margin-top:4px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:4px 8px;border:1px solid var(--border);border-radius:999px;background:var(--border);color:var(--text);font-size:12px}
.chip:hover{background:var(--muted);cursor:pointer}
.chip .dot{width:6px;height:6px;border-radius:999px;background:var(--primary)}
.chip.add{background:var(--accent);border-color:var(--accent);color:var(--text)}
.chip.add:hover{background:#a5d8f6}
.chip.add.small{padding:2px 6px;font-size:11px;min-width:20px;height:20px;display:inline-flex;align-items:center;justify-content:center}
.chip .x{appearance:none;border:none;background:transparent;color:var(--muted);padding:0 2px;margin-left:2px;cursor:pointer;font-size:14px;line-height:1}
.chip .x:hover{color:var(--text)}

/* Inline chip input for adding tags */
.chip-input{height:26px;padding:0 8px;border-radius:999px;font-size:12px}

/* Modal */
.modal-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.4);display:flex;align-items:center;justify-content:center;z-index:50}
.modal{background:var(--panel);border:1px solid var(--border);border-radius:12px;min-width:300px;max-width:90vw;padding:16px;box-shadow:0 10px 30px rgba(0,0,0,.15)}
.modal h3{margin:0 0 12px 0}
.modal .row{display:flex;gap:8px;align-items:center;margin-bottom:8px}
.modal .list{max-height:40vh;overflow:auto;border:1px solid var(--border);border-radius:8px;padding:8px}
.modal .list .item{display:flex;align-items:center;gap:8px;padding:6px 4px;border-radius:6px}
.modal .list .item:hover{background:var(--border)}
.modal .actions{display:flex;gap:8px;justify-content:flex-end;margin-top:12px}
.modal .item.selected{background:var(--accent);border-color:#93c5fd}

/* Minimal link-styled button */
.btn.link{background:transparent;border-color:transparent;color:var(--primary);padding:0 4px}
.btn.link:hover{background:var(--accent);border-color:#93c5fd}

/* Popover menu */
.menu{position:absolute;z-index:40;min-width:180px;background:var(--panel);border:1px solid var(--border);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.12);padding:6px}
.menu .item{padding:8px 10px;border-radius:8px;cursor:pointer;font-size:14px}
.menu .item:hover{background:var(--border)}
.menu .sep{height:1px;background:var(--border);margin:6px 4px}
.menu .row{display:flex;gap:6px;padding:6px 4px}

/* Ensure visibility of the plus button in dark mode */
.modal #col-create{background:var(--primary);border-color:var(--primary);color:#ffffff}
.modal #col-create:hover{opacity:0.9}
/* Softer button color for sepia theme */
html[data-theme="sepia"] .modal #col-create{background:var(--accent);border-color:var(--accent);color:var(--text)}
html[data-theme="sepia"] .modal #col-create:hover{opacity:0.95}

/* Reader */
.reader{height:100%;display:flex}
.reader.with-toc .reader-stage{flex:1;min-width:0}
.reader.with-toc .page{display:flex;justify-content:center;align-items:center}
.toc{
  width:280px;max-width:40vw;border-right:none;
  background:var(--panel);color:var(--text);overflow-y:auto;overflow-x:visible;padding:12px;display:none;z-index:2;
  flex:0 0 280px;transition:width 160ms ease
}
.toc.open{display:block}
.toc.folded{width:18px;flex:0 0 18px;padding:0;overflow:hidden}
.toc.folded > *:not(.toc-handle){display:none}
.toc.overlay{position:fixed;left:0;top:57px;bottom:0;z-index:20;box-shadow:0 10px 30px rgba(0,0,0,.4)}
.toc{position:relative}
.toc .toc-handle{
  position:absolute;right:0;top:0;bottom:0;transform:none;z-index:2;
  width:18px;height:auto;border-radius:0;
  display:flex;align-items:center;justify-content:center;
  border:none;
  background:var(--panel);box-shadow:none;
  color:var(--text);cursor:pointer;font:inherit;font-weight:800;font-size:16px;line-height:1
}
.toc .toc-handle:hover{background:var(--border)}
.toc .toc-handle:focus-visible{outline:2px solid #94a3b8;outline-offset:2px}
.toc-handle-closed{
  position:absolute;left:0;top:0;bottom:0;z-index:12;
  width:18px;border-radius:0;
  display:none;align-items:center;justify-content:center;
  border:none;border-right:1px solid var(--border);
  background:var(--panel);box-shadow:none;
  color:var(--text);cursor:pointer;font:inherit;font-weight:800;font-size:16px;line-height:1
}
.toc-handle-closed:hover{background:var(--border)}
.toc-handle-closed:focus-visible{outline:2px solid #94a3b8;outline-offset:2px}
.toc.overlay .toc-handle{right:0}
.toc .toc-item{padding:8px 6px;border-radius:6px;color:var(--muted)}
.toc .toc-item:hover{background:var(--border);color:var(--text);cursor:pointer}
.reader-stage{flex:1;display:flex;flex-direction:column;min-height:0}
.reader-toolbar{display:flex;gap:8px;align-items:center;padding:10px;border-bottom:none}
.reader-toolbar .spacer{flex:1}
.page{flex:1;display:flex;align-items:center;justify-content:center;padding:16px;min-height:0}
.page #viewer{max-width:1000px;width:100%;height:100%;border-radius:12px;overflow:hidden;border:none;background:var(--panel);margin:0 auto;overflow-anchor:none}
.reader.with-toc .page #viewer{max-width:800px;margin:0 auto}
.pager{display:flex;justify-content:center;gap:16px;padding:12px 12px 24px 12px}
.pager-btn{background:var(--border);color:var(--text);border:1px solid var(--border);padding:10px 14px;border-radius:999px}
.pager-btn:hover{border-color:var(--muted);background:var(--muted);cursor:pointer}

@media (max-width: 900px){
  .toc{display:none !important}
  .toc.open{display:block !important}
  .toc{position:fixed;left:0;top:57px;bottom:0;z-index:20;box-shadow:0 10px 30px rgba(0,0,0,.4)}
}