/* ============================================================
   UploadModule CSS — هم‌شکل با بقیه‌ی ماژول‌ها (wallet/subscription/task/...).
   همه‌چیز زیر .upload-module اسکوپ شده، پیشوند up-.
   ============================================================ */

.upload-module {
  --up-c-bg: #f5f5f3;
  --up-c-surface: #ffffff;
  --up-c-border: rgba(0,0,0,0.08);
  --up-c-border-strong: rgba(0,0,0,0.14);
  --up-c-text: #1a1a18;
  --up-c-text-2: #5a5a56;
  --up-c-text-3: #9a9994;
  --up-c-accent: #2563eb;
  --up-c-accent-bg: #eff6ff;
  --up-c-accent-text: #1d4ed8;
  --up-c-accent-border: #bfdbfe;
  --up-c-success: #16a34a;
  --up-c-success-bg: #f0fdf4;
  --up-c-success-text: #15803d;
  --up-c-success-border: #bbf7d0;
  --up-c-danger: #dc2626;
  --up-c-danger-bg: #fef2f2;
  --up-c-danger-text: #b91c1c;
  --up-c-danger-border: #fecaca;
  --up-radius-sm: 6px;
  --up-radius: 10px;
  --up-radius-lg: 14px;
  --up-transition: 0.15s ease;

  font-family: 'Vazirmatn', system-ui, sans-serif;
  color: var(--up-c-text);
  font-size: 13px;
  line-height: 1.5;
  position: relative;
}
.upload-module * { box-sizing: border-box; }

.up-page-hdr { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 16px; flex-wrap: wrap; gap: 12px; }
.up-page-title { font-size: 20px; font-weight: 600; letter-spacing: -0.02em; }
.up-page-desc { font-size: 13px; color: var(--up-c-text-3); margin-top: 3px; }

.up-card { background: var(--up-c-surface); border: 1px solid var(--up-c-border); border-radius: var(--up-radius-lg); padding: 18px; margin-bottom: 16px; }
.up-tbl-card { padding: 0; overflow: hidden; }

.up-form-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 14px; }
@media (max-width: 900px) { .up-form-grid { grid-template-columns: repeat(2, 1fr); } }

.up-field { display: flex; flex-direction: column; gap: 5px; }
.up-field label { font-size: 11px; font-weight: 600; color: var(--up-c-text-2); }
.up-select { border: 1px solid var(--up-c-border-strong); border-radius: var(--up-radius-sm); padding: 8px 11px; font-size: 13px; background: var(--up-c-surface); color: var(--up-c-text); font-family: inherit; outline: none; }
.up-select:focus { border-color: var(--up-c-accent); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }

/* 🆕 (۱۰ سپتامبر ۲۰۲۶، طبقِ درخواستِ صریحِ کاربر) — تاگلِ «ویدئویِ کلاسِ آنلاین» + فیلدِ عنوان. */
.up-field-wide { grid-column: 1 / -1; }
.up-input { border: 1px solid var(--up-c-border-strong); border-radius: var(--up-radius-sm); padding: 8px 11px; font-size: 13px; background: var(--up-c-surface); color: var(--up-c-text); font-family: inherit; outline: none; width: 100%; box-sizing: border-box; }
.up-input:focus { border-color: var(--up-c-accent); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.up-checkbox-label { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; color: var(--up-c-text); cursor: pointer; }
.up-checkbox-label input { width: auto; }

.up-uploader-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin: 14px 0; }
@media (max-width: 700px) { .up-uploader-row { grid-template-columns: 1fr; } }
.up-optional-label { display: block; font-size: 11px; font-weight: 600; color: var(--up-c-text-2, #5a5a56); margin-bottom: 4px; }

.up-req-msg { color: var(--up-c-danger); font-weight: 600; font-size: 12px; margin-top: 4px; }
.up-ok-msg { color: var(--up-c-success); font-size: 12px; margin-top: 4px; padding: 4px 0; }

.up-btn { display: inline-flex; align-items: center; gap: 6px; padding: 0 14px; height: 34px; border-radius: var(--up-radius-sm); border: 1px solid var(--up-c-border-strong); background: var(--up-c-surface); color: var(--up-c-text); font-size: 12px; font-weight: 500; cursor: pointer; font-family: inherit; transition: background var(--up-transition), border-color var(--up-transition); white-space: nowrap; }
.up-btn:hover { background: var(--up-c-bg); }
.up-btn:disabled { opacity: 0.6; cursor: not-allowed; }
.up-btn-primary { background: var(--up-c-accent); border-color: var(--up-c-accent); color: #fff; margin-top: 4px; }
.up-btn-primary:hover { background: #1d4ed8; border-color: #1d4ed8; }
.up-btn-danger { background: var(--up-c-danger); border-color: var(--up-c-danger); color: #fff; }
.up-btn-danger:hover { background: #b91c1c; border-color: #b91c1c; }

.up-empty { text-align: center; padding: 40px 20px; color: var(--up-c-text-3); }

.up-table-wrap { overflow-x: auto; }
table.up-tbl { width: 100%; border-collapse: collapse; font-size: 12px; }
table.up-tbl th { text-align: right; padding: 10px 14px; color: var(--up-c-text-3); font-weight: 600; font-size: 11px; border-bottom: 1px solid var(--up-c-border); background: var(--up-c-bg); }
table.up-tbl td { padding: 10px 14px; border-bottom: 1px solid var(--up-c-border); vertical-align: middle; }
table.up-tbl tr:last-child td { border-bottom: none; }
table.up-tbl tr:hover td { background: var(--up-c-bg); }
.up-mono { font-family: 'Courier New', monospace; font-size: 11px; word-break: break-all; }
.up-cover-thumb { width: 44px; height: 44px; object-fit: cover; border-radius: 6px; border: 1px solid var(--up-c-border); }
.up-thumb-default { display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 6px; background: var(--up-c-accent-bg); color: var(--up-c-accent-text); font-size: 18px; }
.up-fav-count { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; font-weight: 600; color: #e11d48; }
.up-view-count { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; font-weight: 600; color: var(--up-c-text-2); }

td.up-row-actions { white-space: nowrap; }
.up-row-act-btn { width: 27px; height: 27px; border: 1px solid var(--up-c-border); background: var(--up-c-surface); border-radius: var(--up-radius-sm); display: inline-flex; align-items: center; justify-content: center; color: var(--up-c-text-2); cursor: pointer; margin-inline-start: 4px; text-decoration: none; }
.up-row-act-btn:first-child { margin-inline-start: 0; }
.up-row-act-btn:hover { background: var(--up-c-accent-bg); border-color: var(--up-c-accent-border); color: var(--up-c-accent); }
.up-row-act-btn.danger:hover { background: var(--up-c-danger-bg); border-color: var(--up-c-danger-border); color: var(--up-c-danger); }

/* ── Modal (Confirm) ── */
.up-modal-backdrop { display: none; position: fixed; inset: 0; background: rgba(15,15,14,0.5); z-index: 10000; align-items: center; justify-content: center; padding: 20px; }
.up-modal-backdrop.open { display: flex; }
.up-modal-box { width: 100%; max-width: 420px; background: var(--up-c-surface); border-radius: var(--up-radius-lg); border: 1px solid var(--up-c-border); box-shadow: 0 24px 64px rgba(0,0,0,0.32); padding: 22px; text-align: center; }
.up-confirm-icon { width: 52px; height: 52px; border-radius: 50%; background: var(--up-c-danger-bg); color: var(--up-c-danger); display: flex; align-items: center; justify-content: center; margin: 0 auto 14px; font-size: 26px; }
.up-confirm-text { text-align: center; font-size: 13px; color: var(--up-c-text-2); line-height: 1.7; }
.up-modal-actions { display: flex; gap: 8px; margin-top: 18px; }
.up-modal-actions .up-btn { flex: 1; justify-content: center; }

/* ── Toast ── */
.up-toast-wrap { position: fixed; bottom: 24px; left: 24px; z-index: 1000; display: flex; flex-direction: column; gap: 8px; }
.up-toast { display: flex; align-items: center; gap: 10px; background: var(--up-c-text); color: #fff; padding: 12px 16px; border-radius: var(--up-radius); font-size: 13px; font-weight: 500; cursor: pointer; font-family: 'Vazirmatn', system-ui, sans-serif; }
.up-toast-success { background: var(--up-c-success); }
.up-toast-error { background: var(--up-c-danger); }

/* ============================================================
   DocumentBrowserPage — بازطراحی کامل (۱۶ اوت ۲۰۲۶)، پیشوند doc-.
   طرف دانش‌آموزیِ همین ماژول: جست‌وجو/نمایش جزوه، سوالات، ویدئو.
   ============================================================ */

.doc-page { max-width: 980px; margin: 0 auto; padding: 16px; }

.doc-hero {
  background: linear-gradient(120deg, var(--up-c-accent) 0%, #4f46e5 100%);
  border-radius: var(--up-radius-lg);
  padding: 18px 22px;
  color: #fff;
  margin-bottom: 18px;
}
.doc-hero-title { font-size: 15px; font-weight: 700; }
.doc-hero-sub { font-size: 11.5px; opacity: 0.85; margin-top: 3px; }

.doc-filter-card {
  background: var(--up-c-surface);
  border: 1px solid var(--up-c-border);
  border-radius: var(--up-radius-lg);
  padding: 16px;
  margin-bottom: 18px;
}
.doc-filter-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
.doc-field { display: flex; flex-direction: column; gap: 5px; }
.doc-field label { font-size: 11px; font-weight: 600; color: var(--up-c-text-2); }
.doc-field select {
  border: 1px solid var(--up-c-border-strong); border-radius: var(--up-radius-sm);
  padding: 0 10px; height: 36px; font-size: 12.5px; font-family: inherit;
  color: var(--up-c-text); background: var(--up-c-surface);
}
.doc-field select:focus { outline: none; border-color: var(--up-c-accent); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.doc-field select:disabled { background: var(--up-c-bg); color: var(--up-c-text-3); cursor: not-allowed; }

/* 🆕 هدرِ قابل‌کلیکِ جمع/بازکردنِ فیلترها (بخش UI/UX درخواستِ کاربر) */
.doc-filter-hdr {
  display: flex; align-items: center; justify-content: space-between;
  cursor: pointer; user-select: none;
}
.doc-filter-hdr-title { display: flex; align-items: center; gap: 6px; font-size: 12.5px; font-weight: 700; color: var(--up-c-text); }
.doc-filter-summary { font-weight: 500; color: var(--up-c-text-3); font-size: 11.5px; }
.doc-filter-toggle-icon { font-size: 15px; color: var(--up-c-text-3); }
.doc-filter-body { margin-top: 14px; }
.doc-filter-body.collapsed { margin-top: 0; }

.doc-filter-actions { display: flex; align-items: center; gap: 10px; margin-top: 12px; }
.doc-filter-count { font-size: 11.5px; color: var(--up-c-text-3); }
.doc-clear-btn {
  border: 1px solid var(--up-c-border-strong); background: var(--up-c-surface); color: var(--up-c-text-2);
  border-radius: var(--up-radius-sm); padding: 0 12px; height: 32px; font-size: 11.5px; font-weight: 600;
  cursor: pointer; font-family: inherit; display: inline-flex; align-items: center; gap: 5px;
}
.doc-clear-btn:hover { background: var(--up-c-bg); }

/* ── بخش هر کتاب (تیتر + ردیف کارت فایل‌ها) ── */
.doc-book-section { margin-bottom: 26px; }
.doc-book-section-header { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.doc-book-section-icon { width: 30px; height: 30px; border-radius: 7px; object-fit: contain; background: var(--up-c-bg); }
.doc-book-section-title { font-size: 13.5px; font-weight: 700; }

.doc-files-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 12px; }
.doc-file-card {
  background: var(--up-c-surface); border: 1px solid var(--up-c-border); border-radius: var(--up-radius);
  overflow: hidden; cursor: pointer; transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}
.doc-file-card:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(37,99,235,0.12); border-color: var(--up-c-accent-border); }
.doc-file-cover { width: 100%; height: 100px; object-fit: cover; background: var(--up-c-bg); display: block; }
.doc-file-title { font-size: 11px; font-weight: 600; padding: 8px 8px; text-align: center; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.doc-showmore-card {
  background: var(--up-c-accent-bg); border: 1px dashed var(--up-c-accent-border); border-radius: var(--up-radius);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
  cursor: pointer; min-height: 132px; color: var(--up-c-accent-text); font-size: 12px; font-weight: 700;
  transition: background 0.15s ease;
}
.doc-showmore-card:hover { background: #dbeafe; }
.doc-showmore-count { font-size: 10.5px; font-weight: 500; color: var(--up-c-text-2); }

/* ── نمای تمام‌صفحه‌ی یه کتاب ── */
.doc-fullscreen-overlay { position: fixed; inset: 0; background: var(--up-c-bg); z-index: 1500; overflow-y: auto; padding: 16px; }
.doc-fullscreen-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; max-width: 980px; margin-inline: auto; }
.doc-fullscreen-title { font-size: 14px; font-weight: 700; }
.doc-back-btn {
  border: 1px solid var(--up-c-border-strong); background: var(--up-c-surface); color: var(--up-c-text);
  border-radius: var(--up-radius-sm); padding: 0 14px; height: 34px; font-size: 12px; font-weight: 600;
  cursor: pointer; font-family: inherit;
}
.doc-back-btn:hover { background: var(--up-c-bg); }
.doc-fullscreen-grid { max-width: 980px; margin: 0 auto; }

/* ── نمایشگر PDF/ویدئو ── */
.doc-viewer-wrap { width: 100%; max-width: 1000px; margin: 18px auto; text-align: center; }
.doc-viewer-wrap.fullscreen { position: fixed; inset: 0; background: var(--up-c-bg); z-index: 2000; display: flex; flex-direction: column; padding: 14px; margin: 0; max-width: none; }
.doc-viewer-frame { width: 100%; border-radius: var(--up-radius); border: 1px solid var(--up-c-border-strong); height: 75vh; box-shadow: 0 4px 12px rgba(0,0,0,0.1); background: #fff; }
.doc-viewer-wrap.fullscreen .doc-viewer-frame { height: calc(100vh - 70px); flex: 1; }
.doc-viewer-close { align-self: flex-start; border: 1px solid var(--up-c-border-strong); background: var(--up-c-surface); color: var(--up-c-text); border-radius: var(--up-radius-sm); padding: 8px 16px; margin-bottom: 10px; cursor: pointer; font-family: inherit; font-size: 12.5px; font-weight: 600; }
.doc-viewer-close:hover { background: var(--up-c-bg); }

/* 🆕 (۹ سپتامبر ۲۰۲۶، طبقِ درخواستِ صریحِ کاربر): دکمه‌ی دانلود — هم رویِ کارتِ هر فایل (بدونِ
   نیاز به بازکردنِ ویوئر)، هم داخلِ خودِ ویوئرِ بازشده. */
.doc-file-card { position: relative; }
.doc-file-download-btn {
  position: absolute; top: 6px; left: 6px; width: 26px; height: 26px; border-radius: 50%;
  background: rgba(17,24,39,0.65); color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 13px; text-decoration: none; transition: background 0.15s ease, transform 0.15s ease; z-index: 2;
}
.doc-file-download-btn:hover { background: var(--up-c-accent); transform: scale(1.08); }

.doc-viewer-toolbar { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; align-self: flex-start; }
.doc-viewer-download {
  display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--up-c-accent-border);
  background: var(--up-c-accent-bg); color: var(--up-c-accent-text); border-radius: var(--up-radius-sm);
  padding: 8px 16px; cursor: pointer; font-family: inherit; font-size: 12.5px; font-weight: 600; text-decoration: none;
}
.doc-viewer-download:hover { background: var(--up-c-accent); color: #fff; }

.doc-error-banner { color: var(--up-c-danger); text-align: center; padding: 14px; background: var(--up-c-danger-bg); border-radius: var(--up-radius); margin: 18px auto; max-width: 500px; font-size: 12.5px; }

/* ── Skeleton بارگذاری ── */
.doc-skeleton-grid2 { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; }
.doc-skeleton-card2 { height: 168px; border-radius: var(--up-radius-lg); background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 37%, #f1f5f9 63%); background-size: 400% 100%; animation: docSkeletonPulse2 1.4s ease infinite; }
@keyframes docSkeletonPulse2 { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }

/* ── بنر «حالت مدرسه» — ماژول محتوای مدیر مدرسه (۲۵ اوت ۲۰۲۶) ── */
.up-scope-banner {
  display: flex; align-items: center; gap: 8px; font-size: 12px;
  background: var(--up-c-accent-bg); color: var(--up-c-accent-text);
  border: 1px solid var(--up-c-accent-border); border-radius: var(--up-radius-sm);
  padding: 10px 14px; margin-bottom: 14px;
}
.up-scope-banner .ti { font-size: 15px; flex-shrink: 0; }

/* ── مودال غنی (هدر/بدنه) — برای «اعطای دسترسی به مدرسه» (۲۵ اوت ۲۰۲۶) ── */
.up-grant-box { max-width: 460px; padding: 0; text-align: right; }
.up-modal-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--up-c-border); }
.up-modal-title { font-size: 14px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.up-modal-close { width: 30px; height: 30px; border: none; background: var(--up-c-bg); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--up-c-text-2); cursor: pointer; flex-shrink: 0; }
.up-modal-close:hover { background: var(--up-c-border); color: var(--up-c-text); }
.up-modal-body { padding: 18px 20px; max-height: 60vh; overflow-y: auto; }
.up-hint-text { font-size: 11.5px; color: var(--up-c-text-3); line-height: 1.8; }

.up-grant-list { display: flex; flex-direction: column; gap: 6px; }
.up-grant-item { display: flex; align-items: center; gap: 8px; padding: 9px 10px; border-radius: var(--up-radius-sm); cursor: pointer; font-size: 12.5px; }
.up-grant-item:hover { background: var(--up-c-bg); }
.up-grant-item input[type="checkbox"] { width: 16px; height: 16px; flex-shrink: 0; }

.up-badge { display: inline-flex; align-items: center; gap: 4px; padding: 3px 9px; border-radius: 20px; font-size: 10.5px; font-weight: 600; white-space: nowrap; }
.up-b-global { background: var(--up-c-accent-bg); color: var(--up-c-accent-text); }
.up-b-school { background: #f0fdf4; color: #15803d; }

/* 🚀 (Update 28 — بند ۵) پاورقیِ فهرستِ تدریجی */
.up-list-footer { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; padding: 12px 4px 2px; font-size: 12px; color: var(--up-c-text-3); }
.up-list-footer .up-btn { font-size: 12px; }

/* ══════════ 🆕 (Update 31 — مسیر B) فرمِ آبشاری، نوع/دشواریِ سؤال، فهرستِ صفحه‌بندی‌شده، مودال‌ها ══════════ */
.up-req-star { color: var(--up-c-danger); margin-inline-start: 2px; font-weight: 700; }
.up-form-grid-compact { grid-template-columns: repeat(3, 1fr); margin-bottom: 8px; }
@media (max-width: 900px) { .up-form-grid-compact { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .up-form-grid, .up-form-grid-compact { grid-template-columns: 1fr; } }
.up-select:disabled, .up-input:disabled { background: var(--up-c-bg); color: var(--up-c-text-3); cursor: not-allowed; }

/* کنترلِ دکمه‌ایِ تک‌انتخابی (radiogroup) */
.up-seg { display: inline-flex; flex-wrap: wrap; gap: 6px; padding: 4px; background: var(--up-c-bg); border: 1px solid var(--up-c-border); border-radius: var(--up-radius); }
.up-seg-btn { min-height: 34px; padding: 0 14px; border: 1px solid transparent; border-radius: var(--up-radius-sm); background: transparent; color: var(--up-c-text-2); font: inherit; font-size: 12.5px; font-weight: 600; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; transition: background .15s, color .15s, border-color .15s; }
.up-seg-btn:hover:not(:disabled) { background: var(--up-c-surface); color: var(--up-c-text); }
.up-seg-btn.on { background: var(--up-c-surface); color: var(--up-c-accent-text); border-color: var(--up-c-accent-border); box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.up-seg-btn.on.diff-easy { color: #15803d; border-color: #bbf7d0; background: #f0fdf4; }
.up-seg-btn.on.diff-medium { color: #b45309; border-color: #fde68a; background: #fffbeb; }
.up-seg-btn.on.diff-hard { color: #b91c1c; border-color: #fecaca; background: #fef2f2; }
.up-seg-btn:focus-visible, .up-btn:focus-visible, .up-row-act-btn:focus-visible, .up-link-btn:focus-visible { outline: 2px solid var(--up-c-accent); outline-offset: 2px; }
.up-seg-btn:disabled { opacity: .55; cursor: not-allowed; }

.up-form-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.up-inline-error { margin-top: 10px; padding: 9px 12px; border-radius: var(--up-radius-sm); background: var(--up-c-danger-bg); color: var(--up-c-danger-text); border: 1px solid var(--up-c-danger-border); font-size: 12.5px; text-align: right; display: flex; gap: 6px; align-items: flex-start; }
.up-btn-ghost { border-color: transparent; background: transparent; color: var(--up-c-accent-text); }
.up-btn-ghost:hover { background: var(--up-c-accent-bg); }
.up-btn:disabled { opacity: .55; cursor: not-allowed; }
.up-spin { animation: up-spin 1s linear infinite; display: inline-block; }
@keyframes up-spin { to { transform: rotate(360deg); } }

/* نوارِ ابزارِ فهرست */
.up-list-toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.up-list-toolbar .up-select { min-width: 130px; }
.up-search { position: relative; flex: 1 1 240px; min-width: 200px; }
.up-search > i { position: absolute; inset-inline-start: 10px; top: 50%; transform: translateY(-50%); color: var(--up-c-text-3); pointer-events: none; }
.up-search .up-input { padding-inline-start: 32px; }
.up-toolbar-check { font-size: 12px; white-space: nowrap; }

.up-table-wrap.is-loading { opacity: .55; pointer-events: none; transition: opacity .15s; }
.up-skel-list { display: grid; gap: 8px; }
.up-skel-row { height: 38px; border-radius: var(--up-radius-sm); background: linear-gradient(90deg, #f1f1ef 25%, #e7e7e4 37%, #f1f1ef 63%); background-size: 400% 100%; animation: up-skel 1.3s ease infinite; }
@keyframes up-skel { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }

.up-link-btn { border: none; background: none; color: var(--up-c-accent-text); font: inherit; font-size: 12px; cursor: pointer; padding: 0; display: inline-flex; align-items: center; gap: 3px; }
.up-link-btn:hover { text-decoration: underline; }
.up-muted { color: var(--up-c-text-3); }
.up-b-kind-1 { background: #eef2ff; color: #4338ca; }
.up-b-kind-2 { background: #ecfeff; color: #0e7490; }
.up-b-kind-0 { background: var(--up-c-bg); color: var(--up-c-text-3); }
.up-b-diff.easy { background: #f0fdf4; color: #15803d; }
.up-b-diff.medium { background: #fffbeb; color: #b45309; }
.up-b-diff.hard { background: #fef2f2; color: #b91c1c; }

.up-list-footer { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.up-pager { display: inline-flex; align-items: center; gap: 8px; font-size: 12.5px; }
.up-pager .up-btn { width: 34px; padding: 0; justify-content: center; }

/* مودال‌هایِ پهن (ویرایش / اختصاصِ گروهی) */
.up-modal-box.up-modal-wide { max-width: 860px; text-align: right; max-height: calc(100vh - 40px); display: flex; flex-direction: column; }
.up-modal-wide .up-modal-body { overflow: auto; flex: 1 1 auto; padding: 2px; }
.up-edit-file { display: flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--up-c-text-2); background: var(--up-c-bg); border-radius: var(--up-radius-sm); padding: 8px 10px; margin-bottom: 12px; word-break: break-all; }
.up-step { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 13px; margin: 14px 0 8px; }
.up-step-num { width: 22px; height: 22px; border-radius: 50%; background: var(--up-c-accent); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-size: 12px; }
.up-school-picker { display: grid; gap: 8px; }
.up-school-list { max-height: 190px; overflow: auto; border: 1px solid var(--up-c-border); border-radius: var(--up-radius); padding: 6px; display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 6px; }
.up-school-item { text-align: right; border: 1px solid var(--up-c-border); background: var(--up-c-surface); border-radius: var(--up-radius-sm); padding: 8px 10px; font: inherit; font-size: 12.5px; cursor: pointer; display: flex; align-items: center; gap: 6px; }
.up-school-item:hover { border-color: var(--up-c-accent-border); }
.up-school-item.on { border-color: var(--up-c-accent); background: var(--up-c-accent-bg); color: var(--up-c-accent-text); font-weight: 700; }
.up-bulk-preview { padding: 10px 12px; border-radius: var(--up-radius); background: var(--up-c-accent-bg); border: 1px solid var(--up-c-accent-border); color: var(--up-c-accent-text); font-size: 13px; line-height: 1.9; }
@media (max-width: 560px) {
    .up-modal-backdrop { padding: 0; align-items: flex-end; }
    .up-modal-box.up-modal-wide { max-height: 92vh; border-radius: 18px 18px 0 0; }
    .up-modal-actions { flex-wrap: wrap; }
}
@media (prefers-reduced-motion: reduce) { .up-spin, .up-skel-row { animation: none; } }

/* 🆕 (Update 31 — B6) DocumentViewer: فیلترِ نوع/دشواریِ سؤال + نشان‌هایِ کارت */
.doc-qmeta-filters { display: flex; flex-wrap: wrap; gap: 10px 18px; margin: 4px 0 10px; }
.doc-qmeta-group { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.doc-qmeta-label { font-size: 12px; font-weight: 700; color: var(--up-c-text-2); }
.doc-chip { min-height: 32px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--up-c-border-strong); background: var(--up-c-surface); color: var(--up-c-text-2); font: inherit; font-size: 12px; cursor: pointer; transition: background .15s, color .15s, border-color .15s; }
.doc-chip:hover { border-color: var(--up-c-accent-border); color: var(--up-c-text); }
.doc-chip.on { background: var(--up-c-accent); border-color: var(--up-c-accent); color: #fff; font-weight: 700; }
.doc-chip.on.diff-easy { background: #16a34a; border-color: #16a34a; }
.doc-chip.on.diff-medium { background: #d97706; border-color: #d97706; }
.doc-chip.on.diff-hard { background: #dc2626; border-color: #dc2626; }
.doc-chip:focus-visible { outline: 2px solid var(--up-c-accent); outline-offset: 2px; }
.doc-file-badges { display: flex; justify-content: center; gap: 4px; padding: 0 6px 8px; flex-wrap: wrap; }
.doc-badge { font-size: 10px; font-weight: 700; padding: 2px 8px; border-radius: 999px; background: var(--up-c-bg); color: var(--up-c-text-2); }
.doc-badge.kind-1 { background: #eef2ff; color: #4338ca; }
.doc-badge.kind-2 { background: #ecfeff; color: #0e7490; }
.doc-badge.diff-easy { background: #f0fdf4; color: #15803d; }
.doc-badge.diff-medium { background: #fffbeb; color: #b45309; }
.doc-badge.diff-hard { background: #fef2f2; color: #b91c1c; }

/* ══ 🆕 Update 33 — ماژولِ «سؤالات و پاسخ‌ها» ══ */
.up-role { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.up-role-card { position: relative; display: flex; align-items: center; gap: 12px; padding: 12px 14px; min-height: 64px; text-align: right;
  border: 1.5px solid var(--up-c-border-strong); border-radius: var(--up-radius); background: var(--up-c-surface); color: var(--up-c-text);
  font: inherit; cursor: pointer; transition: border-color .15s, box-shadow .15s, background .15s; }
.up-role-card:hover:not(:disabled) { border-color: var(--up-c-accent-border); }
.up-role-card:focus-visible { outline: 3px solid rgba(37,99,235,.35); outline-offset: 2px; }
.up-role-card:disabled { opacity: .6; cursor: not-allowed; }
.up-role-ic { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; font-size: 21px; flex-shrink: 0; }
.up-role-card.q .up-role-ic { background: #eef2ff; color: #4338ca; }
.up-role-card.a .up-role-ic { background: #ecfdf5; color: #047857; }
.up-role-txt { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.up-role-txt b { font-size: 14px; }
.up-role-txt small { font-size: 11.5px; color: var(--up-c-text-3); }
.up-role-tick { position: absolute; top: 8px; left: 8px; font-size: 18px; color: transparent; }
.up-role-card.on.q { border-color: #818cf8; background: #f5f7ff; box-shadow: 0 0 0 3px rgba(99,102,241,.12); }
.up-role-card.on.a { border-color: #34d399; background: #f0fdf8; box-shadow: 0 0 0 3px rgba(16,185,129,.12); }
.up-role-card.on.q .up-role-tick { color: #4f46e5; }
.up-role-card.on.a .up-role-tick { color: #059669; }
.up-b-question { background: #eef2ff; color: #4338ca; }
.up-b-answer { background: #ecfdf5; color: #047857; }
.up-link-note { font-size: 11px; margin-top: 3px; max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
@media (max-width: 560px) { .up-role { grid-template-columns: 1fr; } }

/* ══ 🆕 Update 33 — DocumentViewer: آیکنِ ۴ برابر، ردیفِ افقیِ اسکرول‌شونده، کاورِ کامل، سؤال/پاسخ ══ */
.doc-book-section { margin-bottom: 30px; }
.doc-book-section-header { align-items: center; gap: 16px; background: var(--up-c-surface); margin: 5px; padding: 8px; border-radius: 24px; } /* 🔁 (Update 69) ویرایشِ کاربر: سربرگِ هر کتاب به‌صورتِ کارتِ سفید */
.doc-book-section-icon { width: 120px; height: 120px; border-radius: 18px; object-fit: contain; background: var(--up-c-surface);
  border: 1px solid var(--up-c-border); box-shadow: 0 6px 18px rgba(15,23,42,.08); flex-shrink: 0; padding: 6px; box-sizing: border-box; }
.doc-book-section-meta { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; min-width: 0; flex: 1; }
.doc-book-section-title { font-size: 17px; font-weight: 800; line-height: 1.5; }
.doc-book-section-count { font-size: 12px; color: var(--up-c-text-3); }
.doc-book-seeall { border: 1px solid var(--up-c-accent-border); background: var(--up-c-accent-bg); color: var(--up-c-accent-text); border-radius: 999px;
  padding: 5px 12px; font: inherit; font-size: 12px; font-weight: 700; cursor: pointer; display: inline-flex; align-items: center; gap: 5px; }
.doc-book-seeall:hover { background: #dbeafe; }
.doc-row-nav { display: flex; gap: 6px; align-self: flex-end; }
.doc-row-arrow { width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--up-c-border-strong); background: var(--up-c-surface); color: var(--up-c-text-2);
  cursor: pointer; display: grid; place-items: center; font-size: 16px; transition: background .15s, color .15s; }
.doc-row-arrow:hover { background: var(--up-c-accent); color: #fff; border-color: var(--up-c-accent); }

.doc-files-row { display: flex; gap: 14px; overflow-x: auto; overflow-y: hidden; padding: 4px 2px 12px; scroll-snap-type: x proximity;
  scroll-behavior: smooth; -webkit-overflow-scrolling: touch; overscroll-behavior-x: contain; align-items: stretch; scrollbar-width: thin; }
.doc-files-row::-webkit-scrollbar { height: 6px; }
.doc-files-row::-webkit-scrollbar-thumb { background: rgba(0,0,0,.18); border-radius: 999px; }
.doc-files-row > .doc-file-card { flex: 0 0 168px; scroll-snap-align: start; display: flex; flex-direction: column; }
.doc-files-row > .doc-showmore-card { flex: 0 0 140px; scroll-snap-align: start; font: inherit; font-size: 13px; font-weight: 800; }

/* کاور: بدونِ ارتفاعِ ثابت ⇒ کلِ تصویر دیده می‌شود؛ پیش از بارگذاری نسبتِ ۳:۴ جا نگه می‌دارد */
.doc-file-cover-wrap { position: relative; background: var(--up-c-bg); }
.doc-file-cover { width: 100%; height: auto; aspect-ratio: auto 3 / 4; object-fit: contain; display: block; }
.doc-file-card:focus-visible { outline: 3px solid rgba(37,99,235,.4); outline-offset: 2px; }
.doc-file-card.is-answer { border-color: #a7f3d0; }
.doc-role-flag { position: absolute; bottom: 6px; right: 6px; font-size: 10.5px; font-weight: 800; padding: 3px 8px; border-radius: 999px; display: inline-flex; gap: 3px; align-items: center; }
.doc-role-flag.a { background: #059669; color: #fff; box-shadow: 0 2px 6px rgba(5,150,105,.35); }
.doc-answer-btn { margin: 0 8px 8px; border: 1px solid #a7f3d0; background: #ecfdf5; color: #047857; border-radius: 999px; padding: 4px 10px;
  font: inherit; font-size: 11.5px; font-weight: 700; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 4px; }
.doc-answer-btn:hover { background: #d1fae5; }
.doc-chip.role-a.on { background: #059669; border-color: #059669; }
.doc-fullscreen-grid .doc-files-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }

@media (max-width: 640px) {
  .doc-book-section-icon { width: 88px; height: 88px; border-radius: 14px; }
  .doc-book-section-title { font-size: 15px; }
  .doc-row-nav { display: none; }
  .doc-files-row > .doc-file-card { flex-basis: 140px; }
  .doc-files-row > .doc-showmore-card { flex-basis: 116px; }
}
@media (prefers-reduced-motion: reduce) { .doc-files-row { scroll-behavior: auto; } }

/* ───────── 🆕 (Update 35) BookArt — طرحِ جایگزینِ حرفه‌ایِ جلد/آیکنِ کتاب (وقتی تصویری انتخاب نشده یا لود نشد) ───────── */
.bkart {
  position: relative; overflow: hidden; isolation: isolate; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center; color: #fff; user-select: none;
  background:
    radial-gradient(120% 80% at 85% 0%, color-mix(in srgb, var(--bk3) 55%, transparent), transparent 60%),
    linear-gradient(150deg, var(--bk1), var(--bk2));
  font-family: 'Vazirmatn', system-ui, sans-serif;
}
.bkart-spine { position: absolute; inset: 0 auto 0 0; width: 9%; z-index: 0;
  background: linear-gradient(90deg, rgba(0,0,0,.22), rgba(255,255,255,.10) 70%, rgba(0,0,0,.06)); }
.bkart-glow { position: absolute; width: 70%; aspect-ratio: 1; border-radius: 50%; top: -20%; right: -20%; z-index: 0;
  background: radial-gradient(circle, rgba(255,255,255,.22), transparent 65%); }
.bkart-wm { position: absolute; z-index: 0; font-size: 7.5em; opacity: .12; left: -6%; bottom: -10%; transform: rotate(-14deg); line-height: 1; }
.bkart > :not(.bkart-spine):not(.bkart-glow):not(.bkart-wm) { position: relative; z-index: 1; }
.bkart-badge { display: grid; place-items: center; border-radius: 28%; background: rgba(255,255,255,.18);
  border: 1px solid rgba(255,255,255,.35); box-shadow: 0 8px 18px -8px rgba(0,0,0,.45); backdrop-filter: blur(2px); }

/* مربعی — سرِ بخشِ هر کتاب (اندازه را .doc-book-section-icon تعیین می‌کند) */
.bkart.bkart-icon { padding: 0 !important; gap: 6px; font-size: 16px; }
.bkart-icon .bkart-badge { width: 46%; aspect-ratio: 1; font-size: 2.1em; }
.bkart-icon .bkart-short { font-size: .78em; font-weight: 800; line-height: 1.35; max-width: 88%; padding-inline-start: 6%;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; text-shadow: 0 1px 2px rgba(0,0,0,.25); }
.bkart-icon .bkart-wm { font-size: 5em; }

/* جلدِ ۳:۴ — کارتِ فایل */
.bkart.bkart-cover { width: 100%; aspect-ratio: 3 / 4; padding: 10% 10% 9% 16%; gap: 7%; justify-content: flex-start; font-size: 12px; }
.bkart-cover .bkart-top { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 4px; }
.bkart-cover .bkart-brand { font-size: .78em; font-weight: 800; opacity: .9; display: inline-flex; align-items: center; gap: 3px; white-space: nowrap; }
.bkart-cover .bkart-kind { font-size: .74em; font-weight: 800; padding: 2px 7px; border-radius: 999px; background: rgba(255,255,255,.22);
  border: 1px solid rgba(255,255,255,.3); white-space: nowrap; }
.bkart-cover .bkart-badge { width: 40%; aspect-ratio: 1; font-size: 2.3em; margin-top: 6%; }
.bkart-cover .bkart-title { font-size: 1.12em; font-weight: 900; line-height: 1.55; text-shadow: 0 1px 3px rgba(0,0,0,.28);
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; max-width: 100%; }
.bkart-cover .bkart-subtitle { margin-top: auto; font-size: .82em; font-weight: 600; opacity: .88; line-height: 1.6; padding-top: 6px;
  border-top: 1px solid rgba(255,255,255,.28); width: 100%;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.doc-file-cover.bkart { height: auto; object-fit: initial; }
@media (max-width: 640px) { .bkart.bkart-cover { font-size: 11px; } .bkart.bkart-icon { font-size: 13px; } }
.bkart[hidden], .bkart-src[hidden] { display: none !important; }