/* ==========================================================================
   VNSIC UNIFIED DOCUMENT VIEWER (BỘ ĐỌC VĂN BẢN & TÀI LIỆU TOÀN CỤC VNSIC)
   Tối ưu cuộn cảm ứng đa điểm (Touch Scrolling) 100% mượt mà trên Mobile & Desktop
   Khắc phục triệt để lỗi thẻ Iframe Chromium bị khóa đơ khi vuốt trên di động
   ========================================================================== */

/* 1. Modal Dialog & Khung chứa tổng thể */
#vnsic-doc-modal .modal-dialog {
  max-width: 960px;
  width: 94%;
  margin: 20px auto;
  transition: transform 0.25s ease-out;
}

#vnsic-doc-modal .modal-content {
  border-radius: 12px;
  border: none;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0, 43, 73, 0.3);
  background: #1E293B;
  display: flex;
  flex-direction: column;
}

/* 2. Modal Header Chuẩn phong cách VCCI */
#vnsic-doc-modal .modal-header {
  background: #002B49;
  color: #FFFFFF;
  border-bottom: 3px solid #D4AF37;
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  z-index: 10;
  overflow: hidden;
}

#vnsic-doc-modal .modal-title {
  font-size: 15px;
  font-weight: 700;
  color: #FFFFFF;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  flex: 1 1 auto;
  overflow: hidden;
}

#vnsic-doc-modal .modal-title .vnsic-doc-prefix-text {
  white-space: nowrap;
  flex-shrink: 0;
}

#vnsic-doc-modal .modal-title .vnsic-doc-title-text {
  color: #FCD34D;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
  flex: 1 1 auto;
}

#vnsic-doc-modal .modal-header .close {
  color: #FFFFFF;
  opacity: 0.85;
  font-size: 24px;
  font-weight: 300;
  line-height: 1;
  background: transparent;
  border: none;
  padding: 0 !important;
  margin: 0 0 0 10px !important;
  width: 30px;
  height: 30px;
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  outline: none;
  transition: opacity 0.2s, color 0.2s;
  flex-shrink: 0 !important;
}

#vnsic-doc-modal .modal-header .close:hover {
  opacity: 1;
  color: #FCD34D;
}

/* 3. Thanh công cụ PDF Toolbar */
#vnsic-doc-modal .vnsic-doc-toolbar {
  background: #1E293B;
  border-bottom: 1px solid #334155;
  padding: 6px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-shrink: 0;
  color: #F8FAFC;
  font-size: 12px;
  z-index: 5;
  flex-wrap: nowrap;
}

#vnsic-doc-modal .pdf-tool-left {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
  min-width: 0;
}

#vnsic-doc-modal .pdf-tool-right {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  flex-shrink: 0;
}

#vnsic-doc-modal .vnsic-pdf-badge {
  background: #0284C7;
  color: #FFFFFF;
  font-weight: 700;
  font-size: 11px;
  padding: 4px 9px;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  flex-shrink: 0;
}

#vnsic-doc-modal .vnsic-pdf-zoom-group {
  display: inline-flex;
  align-items: center;
  background: #334155;
  border-radius: 5px;
  overflow: hidden;
  flex-shrink: 0;
}

#vnsic-doc-modal .btn-pdf-ctrl {
  background: transparent;
  color: #E2E8F0;
  border: none;
  padding: 5px 9px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

#vnsic-doc-modal .btn-pdf-ctrl:hover {
  background: #475569;
  color: #FFFFFF;
}

#vnsic-doc-modal .pdf-zoom-val {
  padding: 2px 6px;
  font-size: 11.5px;
  font-weight: 700;
  color: #38BDF8;
  min-width: 44px;
  text-align: center;
}

#vnsic-doc-modal .btn-pdf-mode {
  background: #0F172A;
  border: 1px solid #475569;
  color: #CBD5E1;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 9px;
  border-radius: 4px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  transition: all 0.2s;
  text-decoration: none !important;
  white-space: nowrap;
  flex-shrink: 0;
}

#vnsic-doc-modal .btn-pdf-mode:hover {
  background: #1E293B;
  color: #38BDF8;
  border-color: #38BDF8;
}

/* 4. Modal Body & Vùng hiển thị nội dung */
#vnsic-doc-modal .modal-body {
  padding: 0;
  background: #525659;
  position: relative;
  display: flex;
  flex-direction: column;
  height: 72vh;
  min-height: 520px;
  max-height: 780px;
  overflow: hidden;
}

/* 5. Vùng chứa PDF.js Canvas cuộn cảm ứng đa điểm mượt mà */
#vnsic-doc-modal .vnsic-pdfjs-container {
  width: 100%;
  height: 100%;
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 18px 10px 40px;
  box-sizing: border-box;
  background: #525659;
  overflow-y: auto !important;
  overflow-x: auto !important;
  -webkit-overflow-scrolling: touch !important;
  overscroll-behavior: contain !important;
  touch-action: pan-y !important;
}

/* Loading spinner */
#vnsic-doc-modal .vnsic-pdfjs-loading {
  color: #FFFFFF;
  padding: 60px 16px;
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin: auto;
}

#vnsic-doc-modal .vnsic-pdfjs-loading .fa-spin {
  font-size: 32px;
  color: #38BDF8;
}

/* Thẻ trang PDF */
#vnsic-doc-modal .vnsic-pdfjs-page-card {
  background: #FFFFFF;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  border-radius: 4px;
  overflow: hidden;
  margin: 0 auto;
  max-width: 100%;
  width: fit-content;
  position: relative;
  flex-shrink: 0 !important;
}

#vnsic-doc-modal .vnsic-pdfjs-canvas {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  touch-action: pan-y !important;
}

#vnsic-doc-modal .vnsic-pdfjs-page-num {
  text-align: center;
  font-size: 11px;
  font-weight: 600;
  color: #64748B;
  padding: 5px 8px;
  background: #F8FAFC;
  border-top: 1px solid #E2E8F0;
}

#vnsic-doc-modal .vnsic-pdfjs-error {
  background: #FEF2F2;
  border: 1px solid #FECACA;
  color: #991B1B;
  padding: 24px;
  border-radius: 8px;
  text-align: center;
  max-width: 480px;
  margin: auto;
}

/* 6. Fallback Iframe (ẩn mặc định) */
#vnsic-doc-modal #vnsicDocIframe {
  width: 100%;
  height: 100%;
  flex: 1 1 auto;
  border: none;
  background: #FFFFFF;
  display: none;
}

/* 7. Thông báo tài liệu Office / Khác (.docx, .xlsx, .pptx) */
#vnsic-doc-modal #vnsicDocNoticeWrap {
  flex: 1 1 auto;
  overflow-y: auto;
  background: #FFFFFF;
  padding: 40px 24px;
  text-align: center;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#vnsic-doc-modal .office-doc-icon-wrap {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: #EFF6FF;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: #005A9C;
  font-size: 34px;
}

/* 8. Vùng xem Ảnh trực tiếp */
#vnsic-doc-modal #vnsicDocImageWrap {
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background: #18181B;
  padding: 20px;
  display: none;
  align-items: center;
  justify-content: center;
}

#vnsic-doc-modal #vnsicDocImageWrap img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  border-radius: 4px;
}

/* 9. Modal Footer */
#vnsic-doc-modal .modal-footer {
  padding: 10px 18px;
  background: #F8FAFC;
  border-top: 1px solid #E2E8F0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  z-index: 10;
}

#vnsic-doc-modal .modal-footer .doc-branding {
  font-size: 12px;
  color: #64748B;
  display: flex;
  align-items: center;
}

#vnsic-doc-modal .modal-footer .doc-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

#vnsic-doc-modal .modal-footer .doc-actions .btn {
  font-weight: 600;
  font-size: 12.5px;
  padding: 6px 14px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

/* ==========================================================================
   TỐI ƯU HÓA HOÀN TOÀN CHO THIẾT BỊ DI ĐỘNG (MOBILE VIEW & RESPONSIVE)
   ========================================================================== */
@media (max-width: 767.98px) {
  #vnsic-doc-modal {
    padding-left: 0 !important;
    padding-right: 0 !important;
  }

  #vnsic-doc-modal .modal-dialog {
    margin: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    height: 100% !important;
    min-height: 100% !important;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
  }

  #vnsic-doc-modal .modal-content {
    border-radius: 0 !important;
    height: 100% !important;
    max-height: 100vh !important;
    border: none !important;
    display: flex !important;
    flex-direction: column !important;
  }

  #vnsic-doc-modal .modal-header {
    padding: 10px 14px !important;
    flex-shrink: 0 !important;
  }

  #vnsic-doc-modal .modal-header .close {
    margin: 0 0 0 6px !important;
    padding: 0 !important;
    width: 28px !important;
    height: 28px !important;
    font-size: 22px !important;
    flex-shrink: 0 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
  }

  #vnsic-doc-modal .modal-title {
    font-size: 13.5px !important;
    line-height: 1.35 !important;
    gap: 6px !important;
  }

  #vnsic-doc-modal .vnsic-doc-toolbar {
    padding: 6px 10px !important;
    flex-shrink: 0 !important;
    gap: 6px !important;
  }

  #vnsic-doc-modal .vnsic-pdf-badge {
    font-size: 10.5px !important;
    padding: 3px 6px !important;
  }

  #vnsic-doc-modal .btn-pdf-ctrl {
    padding: 4px 7px !important;
    font-size: 11px !important;
  }

  #vnsic-doc-modal .pdf-zoom-val {
    font-size: 10.5px !important;
    min-width: 38px !important;
    padding: 2px 4px !important;
  }

  #vnsic-doc-modal .btn-pdf-mode {
    font-size: 10.5px !important;
    padding: 3px 7px !important;
  }

  #vnsic-doc-modal .modal-body {
    flex: 1 1 auto !important;
    height: auto !important;
    min-height: 0 !important;
    max-height: none !important;
    overflow: hidden !important;
    display: flex !important;
    flex-direction: column !important;
  }

  #vnsic-doc-modal .vnsic-pdfjs-container {
    padding: 10px 6px 50px !important;
    gap: 12px !important;
  }

  #vnsic-doc-modal .vnsic-pdfjs-page-card {
    border-radius: 3px !important;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.35) !important;
  }

  #vnsic-doc-modal .modal-footer {
    padding: 8px 12px !important;
    flex-shrink: 0 !important;
    flex-wrap: nowrap !important;
  }

  #vnsic-doc-modal .modal-footer .doc-branding {
    display: none !important; /* Ẩn bớt branding text trên màn hình hẹp để nhường chỗ cho các nút bấm */
  }

  #vnsic-doc-modal .modal-footer .doc-actions {
    width: 100% !important;
    display: flex !important;
    justify-content: space-between !important;
    gap: 6px !important;
  }

  #vnsic-doc-modal .modal-footer .doc-actions .btn {
    flex: 1 1 auto !important;
    justify-content: center !important;
    font-size: 11.5px !important;
    padding: 7px 8px !important;
    white-space: nowrap !important;
  }
}