.doc-hub { max-width: 1120px; min-height: 68vh; margin: 22px auto 42px; padding: 0 14px 64px; }
    .doc-context {
        margin: 18px 0 18px; background: var(--surf,#fff); border: 1px solid var(--brd,#e2e8f0);
        border-radius: 16px; padding: 18px; color: var(--txt-2,#475569); line-height: 1.7;
        box-shadow: 0 4px 18px rgba(15,23,42,.04);
    }
    .doc-context h2 { margin: 0 0 8px; color: var(--txt,#0f172a); font-size: 1.05rem; font-weight: 800; }
    .doc-context p { margin: 0 0 10px; font-size: .9rem; }
    .doc-context-list {
        display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 10px; margin-top: 12px;
    }
    .doc-context-list div {
        background: var(--surf2,#f8fafc); border: 1px solid var(--brd,#e2e8f0);
        border-radius: 12px; padding: 12px; min-width: 0;
    }
    .doc-context-list strong { display: block; color: var(--txt,#0f172a); font-size: .86rem; margin-bottom: 4px; }
    .doc-context-list span { display: block; font-size: .8rem; line-height: 1.55; color: var(--txt-2,#64748b); }
    .doc-toolbar {
        margin: 18px 0; display: flex; gap: 12px; align-items: center;
    }
    .doc-search {
        width: 260px; min-height: 42px; border: 1px solid var(--brd,#e2e8f0); background: var(--surf,#fff);
        color: var(--txt,#0f172a); border-radius: 14px; padding: 0 15px; font: inherit; flex-shrink: 0;
    }
    .doc-count { color: var(--txt-2,#64748b); font-size: .9rem; font-weight: 700; white-space: nowrap; }
    .doc-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
    .doc-card {
        display: flex; flex-direction: column; gap: 14px; min-height: 210px;
        background: var(--surf,#fff); border: 1px solid var(--brd,#e2e8f0);
        border-radius: 18px; padding: 16px; text-decoration: none; color: inherit;
        box-shadow: 0 4px 18px rgba(15,23,42,.06); transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease;
    }
    .doc-card:hover { transform: translateY(-3px); box-shadow: 0 18px 42px rgba(15,23,42,.12); border-color: rgba(37,99,235,.35); }
    .doc-icon {
        width: 48px; height: 48px; display: grid; place-items: center; border-radius: 16px;
        background: rgba(37,99,235,.1); color: var(--c-primary,#2563eb); font-size: 1.05rem;
    }
    .doc-card h2 { margin: 0; color: var(--txt,#0f172a); font-size: 1.02rem; line-height: 1.25; letter-spacing: 0; }
    .doc-card p { margin: 0; color: var(--txt-2,#64748b); font-size: .86rem; line-height: 1.55; }
    .doc-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }
    .doc-meta span {
        display: inline-flex; align-items: center; gap: 5px; padding: 5px 8px; border-radius: 999px;
        background: var(--surf2,#f8fafc); border: 1px solid var(--brd,#e2e8f0); color: var(--txt-2,#64748b);
        font-size: .74rem; font-weight: 700;
    }
    .doc-actions { display: grid; grid-template-columns: 1fr auto; gap: 8px; }
    .doc-open, .doc-copy {
        min-height: 38px; border-radius: 12px; border: 0; display: inline-flex; align-items: center; justify-content: center;
        gap: 7px; font-weight: 800; font-size: .84rem; cursor: pointer; text-decoration: none;
    }
    .doc-open { background: var(--c-primary,#2563eb); color: #fff; }
    .doc-copy { width: 42px; background: var(--surf2,#f8fafc); color: var(--txt-2,#64748b); border: 1px solid var(--brd,#e2e8f0); }
    .doc-empty {
        background: var(--surf,#fff); border: 1px solid var(--brd,#e2e8f0); border-radius: 18px;
        padding: 34px; color: var(--txt-2,#64748b); text-align: center;
    }
    [data-theme="dark"] .doc-card,
    [data-theme="dark"] .doc-search,
    [data-theme="dark"] .doc-empty,
    [data-theme="dark"] .doc-context { background: var(--surf,#111f3a); border-color: var(--brd,rgba(255,255,255,.08)); }
    [data-theme="dark"] .doc-context-list div { background: var(--surf2,#172542); border-color: var(--brd,rgba(255,255,255,.08)); }
    [data-theme="dark"] .doc-icon { background: rgba(96,165,250,.14); color: #93c5fd; }
    @media (max-width: 920px) { .doc-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
    @media (max-width: 620px) {
        .doc-toolbar { grid-template-columns: 1fr; }
        .doc-grid { grid-template-columns: 1fr; }
        .doc-context-list { grid-template-columns: 1fr; }
    }

.pv-wrap { max-width: 1400px; min-height: 68vh; margin: 1px auto; padding: 0 10px 64px; }
.pv-card {
    background: var(--surf, #fff);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,.10);
    overflow: hidden;
    border: 1px solid var(--brd, #e2e8f0);
}

.pv-header {
    background: linear-gradient(135deg, #2563eb, #0ea5e9);
    color: #fff;
    padding: 14px 20px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}
.pv-title { display: flex; align-items: center; gap: 10px; font-size: 1rem; font-weight: 700; }
.pv-title i { font-size: 1.2rem; opacity: .9; }
.pv-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

.pv-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 7px 14px; border-radius: 10px; font-size: .8rem; font-weight: 600;
    border: 1.5px solid rgba(255,255,255,.3); background: rgba(255,255,255,.15);
    color: #fff; cursor: pointer; font-family: inherit; transition: all .2s;
    text-decoration: none; white-space: nowrap;
}
.pv-btn:hover { background: rgba(255,255,255,.28); transform: translateY(-1px); }
.pv-btn.copied { background: rgba(52,211,153,.35); border-color: #34d399; }

.pv-zoom-bar {
    display: flex; align-items: center; gap: 4px;
    background: rgba(0,0,0,.18); border-radius: 10px; padding: 3px 6px;
}
.pv-zoom-bar button {
    width: 28px; height: 28px; border-radius: 7px;
    border: 1px solid rgba(255,255,255,.25); background: transparent;
    color: #fff; font-size: .85rem; cursor: pointer;
    display: flex; align-items: center; justify-content: center; transition: background .15s;
}
.pv-zoom-bar button:hover { background: rgba(255,255,255,.2); }
.pv-zoom-lbl {
    font-size: .72rem; font-weight: 700; min-width: 38px;
    text-align: center; color: rgba(255,255,255,.9); font-family: monospace;
}

.pv-page-nav {
    display: flex; align-items: center; gap: 4px;
    background: rgba(0,0,0,.18); border-radius: 10px; padding: 3px 6px;
}
.pv-page-nav button {
    width: 28px; height: 28px; border-radius: 7px;
    border: 1px solid rgba(255,255,255,.25); background: transparent;
    color: #fff; font-size: .8rem; cursor: pointer;
    display: flex; align-items: center; justify-content: center; transition: background .15s;
}
.pv-page-nav button:hover { background: rgba(255,255,255,.2); }
.pv-page-info {
    font-size: .72rem; font-weight: 600; min-width: 60px;
    text-align: center; color: rgba(255,255,255,.9);
}

.pv-meta {
    display: flex; gap: 16px; flex-wrap: wrap; padding: 7px 20px;
    background: var(--surf2, #f8fafc); border-bottom: 1px solid var(--brd, #e2e8f0);
    font-size: 12px; color: var(--txt-2, #64748b); align-items: center;
}
.pv-meta-item { display: flex; align-items: center; gap: 5px; }
.pv-meta-item i { color: var(--c-primary, #2563eb); font-size: .75rem; }
.pv-meta-item strong { color: var(--txt, #1e293b); margin-right: 2px; }

.pv-area {
    background: var(--bg2, #e2e8f0); padding: 20px; min-height: 70vh;
    max-height: 80vh; overflow: auto;
    -webkit-user-select: none; user-select: none;
}

/* PDF.js Canvas Container */
#pdfContainer {
    display: flex; flex-direction: column; align-items: flex-start; gap: 12px;
    width: fit-content;
    min-width: 100%;
}
#pdfContainer canvas {
    box-shadow: 0 4px 20px rgba(0,0,0,.15);
    border-radius: 4px; background: #fff;
    -webkit-user-select: none; user-select: none;
    pointer-events: none;
    display: block;
    margin: 0 auto;
}

.pv-loading {
    display: flex; flex-direction: column; align-items: center; gap: 12px;
    padding: 60px 20px; color: var(--txt-2, #64748b);
    width: 100%; text-align: center;
}
.pv-loading-spinner {
    width: 40px; height: 40px;
    border: 3px solid var(--brd, #e2e8f0);
    border-top-color: var(--c-primary, #2563eb);
    border-radius: 50%; animation: pvSpin .7s linear infinite;
}
@keyframes pvSpin { to { transform: rotate(360deg); } }

.pv-footer {
    padding: 12px 20px; background: var(--surf2, #f8fafc);
    border-top: 1px solid var(--brd, #e2e8f0);
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 10px;
}
.pv-back {
    color: var(--txt-2, #64748b); text-decoration: none; font-size: 13px;
    font-weight: 600; display: flex; align-items: center; gap: 6px; transition: color .2s;
}
.pv-back:hover { color: var(--c-primary, #2563eb); }
.pv-format { font-size: 12px; color: var(--txt-3, #94a3b8); display: flex; align-items: center; gap: 5px; }

.pv-toast {
    position: fixed; bottom: 28px; left: 50%;
    transform: translateX(-50%) translateY(60px);
    background: #1e293b; color: #fff; padding: 10px 22px;
    border-radius: 40px; font-size: .85rem; font-weight: 600;
    opacity: 0; transition: all .3s cubic-bezier(.34,1.56,.64,1);
    z-index: 9999; pointer-events: none; white-space: nowrap;
}
.pv-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Dark mode */
[data-theme="dark"] .pv-card  { background: var(--surf, #111f3a); border-color: var(--brd, rgba(255,255,255,.08)); }
[data-theme="dark"] .pv-header { background: linear-gradient(135deg, #1e3a5f, #0c2d4a); }
[data-theme="dark"] .pv-meta  { background: var(--bg, #0b1629); border-color: var(--brd); }
[data-theme="dark"] .pv-meta-item strong { color: var(--txt, #e2eaf5); }
[data-theme="dark"] .pv-area  { background: var(--bg, #0b1629); }
[data-theme="dark"] .pv-footer { background: var(--bg, #0b1629); border-color: var(--brd); }
[data-theme="dark"] .pv-back  { color: var(--txt-3, #94a3b8); }
[data-theme="dark"] .pv-format { color: var(--txt-3, #4d6a88); }
[data-theme="dark"] #pdfContainer canvas { box-shadow: 0 4px 20px rgba(0,0,0,.4); }

@media (max-width: 640px) {
    .pv-header  { flex-direction: column; align-items: stretch; }
    .pv-actions { justify-content: center; flex-wrap: wrap; }
    .pv-area    { padding: 12px; }
    .pv-meta    { gap: 12px; }
}


/* Final 2026-05-15 clean PDF viewer toolbar */
.pv-header {
  padding: 12px 16px !important;
  display: grid !important;
  grid-template-columns: minmax(170px, auto) 1fr !important;
  align-items: center !important;
}
.pv-title {
  min-width: 0 !important;
  font-size: .92rem !important;
  line-height: 1.1 !important;
}
.pv-title span {
  min-width: 0 !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
  white-space: nowrap !important;
}
.pv-actions {
  justify-content: flex-end !important;
  min-width: 0 !important;
}
.pv-page-nav,
.pv-zoom-bar {
  min-height: 34px !important;
}
.pv-btn {
  min-height: 34px !important;
  padding: 0 12px !important;
  align-items: center !important;
}
.pv-meta {
  display: grid !important;
  grid-template-columns: repeat(4, minmax(0, 1fr)) !important;
  gap: 8px !important;
  padding: 10px 14px !important;
  align-items: stretch !important;
}
.pv-meta-item {
  min-width: 0 !important;
  min-height: 34px !important;
  padding: 7px 9px !important;
  border: 1px solid var(--brd, #e2e8f0) !important;
  border-radius: 10px !important;
  background: var(--surf, #fff) !important;
  line-height: 1.1 !important;
  flex-wrap: wrap !important;
}
[data-theme="dark"] .pv-meta-item {
  background: var(--surf, #111f3a) !important;
}
@media (max-width: 760px) {
  .pv-header {
    grid-template-columns: 1fr !important;
    gap: 10px !important;
  }
  .pv-actions {
    display: grid !important;
    grid-template-columns: 1fr 1fr auto !important;
    justify-content: stretch !important;
  }
  .pv-page-nav,
  .pv-zoom-bar,
  .pv-btn {
    justify-content: center !important;
  }
  .pv-meta {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  }
}
@media (max-width: 430px) {
  .pv-actions {
    grid-template-columns: 1fr !important;
  }
  .pv-meta {
    grid-template-columns: 1fr !important;
  }
}