/* ==========================================================================
   BEELIO PWA V2.0 — GIAO DIỆN CÀI ĐẶT QUA TRÌNH DUYỆT & TỐI ƯU CỬA SỔ ĐỘC LẬP
   Hỗ trợ trọn vẹn: Light / Sepia / Dark, Safe-Area iPad/iPhone, Chống Pull-to-Refresh
   ========================================================================== */

/* 1. TỐI ƯU KHI ĐÃ MỞ TRONG CỬA SỔ APP ĐỘC LẬP (STANDALONE MODE) */
@media (display-mode: standalone) {
  html,
  body {
    overscroll-behavior-y: none;
    -webkit-tap-highlight-color: transparent;
  }

  .main-site-header {
    padding-top: env(safe-area-inset-top, 0px);
  }

  .mobile-bottom-nav {
    padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 6px);
  }

  /* Tự động ẩn hoàn toàn nút Cài App trên Header khi đã mở từ App cài đặt */
  .pwa-install-trigger-only {
    display: none !important;
  }

  /* Ngăn menu chọn văn bản ngoài ý muốn trên các nút điều khiển trò chơi của bé */
  button,
  .nav-item-btn,
  .util-capsule,
  .mobile-nav-item {
    -webkit-touch-callout: none;
    user-select: none;
  }
}

/* Tương thích iOS Home Screen Web App (`navigator.standalone`) */
html[data-pwa-standalone="true"] .pwa-install-trigger-only {
  display: none !important;
}

/* 2. NÚT "CÀI APP" TINH GỌN BÊN PHẢI CỤM TIỆN ÍCH HEADER */
.util-capsule.pwa-install-capsule {
  height: 28px;
  padding: 0 10px;
  border-radius: 7px;
  display: inline-flex;
  align-items: center;
  gap: 5.5px;
  background: #FFFFFF;
  color: #0F766E;
  border: 1px solid rgba(203, 213, 225, 0.75);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
  font-family: var(--font-heading, 'Nunito', sans-serif);
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  white-space: nowrap;
}

.util-capsule.pwa-install-capsule:hover {
  background: #F0FDFA;
  color: #0D9488;
  border-color: #99F6E4;
  box-shadow: 0 2px 5px rgba(13, 148, 136, 0.12);
}

.util-capsule.pwa-install-capsule:active {
  background: #CCFBF1;
}

.pwa-install-capsule .pwa-dl-svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

[data-theme="dark"] .util-capsule.pwa-install-capsule {
  background: #1F2D4A;
  color: #5EEAD4;
  border-color: rgba(94, 234, 212, 0.28);
}

[data-theme="sepia"] .util-capsule.pwa-install-capsule {
  background: #FFFDF7;
  color: #2D6A4F;
  border-color: #C9B294;
}

@media (max-width: 900px) {
  .util-capsule.pwa-install-capsule .capsule-text {
    display: none;
  }
  .util-capsule.pwa-install-capsule {
    height: 26px;
    padding: 0 7px;
  }
}

/* 3. MODAL HƯỚNG DẪN CÀI ĐẶT ĐA TRÌNH DUYỆT & CHUYỂN TIẾN ĐỘ HỌC TẬP */
.pwa-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 9990;
  background: rgba(15, 23, 42, 0.56);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  box-sizing: border-box;
  animation: pwaFadeIn 0.18s ease-out;
}

.pwa-modal-backdrop.hidden {
  display: none !important;
}

@keyframes pwaFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.pwa-modal-card {
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  background: var(--bg-surface, #FFFFFF);
  color: var(--text-primary, #24324A);
  border: 2.5px solid #F6B91A;
  border-radius: 26px;
  box-shadow: 0 24px 48px rgba(15, 23, 42, 0.26);
  padding: 24px 24px 22px;
  box-sizing: border-box;
  font-family: var(--font-main, 'Be Vietnam Pro', sans-serif);
  position: relative;
}

.pwa-modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-color, #D9E2EC);
  background: var(--bg-subtle, #F7F0E3);
  color: var(--text-secondary, #3E4E68);
  font-size: 18px;
  font-weight: 800;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.pwa-modal-hero {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
  padding-right: 34px;
}

.pwa-modal-app-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  object-fit: cover;
  border: 2px solid #FCD34D;
  box-shadow: 0 6px 16px rgba(246, 185, 26, 0.28);
  flex-shrink: 0;
  background: #FFF6DC;
}

.pwa-modal-title {
  margin: 0 0 4px;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.25;
}

.pwa-modal-subtitle {
  margin: 0;
  font-size: 13.5px;
  color: var(--text-muted, #5D6B80);
  font-weight: 600;
}

.pwa-tabs-bar {
  display: flex;
  gap: 8px;
  background: var(--bg-subtle, #F7F0E3);
  padding: 5px;
  border-radius: 14px;
  margin-bottom: 16px;
}

.pwa-tab-btn {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text-secondary, #3E4E68);
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 700;
  padding: 9px 10px;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.pwa-tab-btn.active {
  background: var(--bg-surface, #FFFFFF);
  color: var(--text-primary, #24324A);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

.pwa-benefits-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.pwa-benefit-chip {
  font-size: 12.5px;
  font-weight: 700;
  padding: 5px 10px;
  border-radius: 999px;
  background: #FEF3C7;
  color: #92400E;
}

[data-theme="dark"] .pwa-benefit-chip {
  background: rgba(246, 185, 26, 0.16);
  color: #FDE68A;
}

.pwa-step-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0 0 16px;
}

.pwa-step-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 16px;
  background: var(--bg-subtle, #F7F0E3);
  border: 1px solid var(--border-color, #D9E2EC);
  font-size: 14px;
  line-height: 1.5;
}

.pwa-step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #F6B91A;
  color: #24324A;
  font-weight: 800;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}

.pwa-inline-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 7px;
  background: var(--bg-surface, #FFFFFF);
  border: 1px solid var(--border-color, #CBD5E1);
  font-weight: 700;
  font-size: 13px;
  vertical-align: middle;
}

.pwa-primary-cta {
  width: 100%;
  border: none;
  border-radius: 16px;
  padding: 14px 20px;
  font-family: inherit;
  font-size: 15.5px;
  font-weight: 800;
  color: #FFFFFF;
  background: linear-gradient(135deg, #168C68 0%, #0F6E50 100%);
  box-shadow: 0 8px 18px rgba(15, 110, 80, 0.28);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform 0.15s ease;
}

.pwa-primary-cta:hover {
  transform: translateY(-1px);
}

.pwa-secondary-btn {
  border: 1.5px solid var(--border-color, #CBD5E1);
  background: var(--bg-surface, #FFFFFF);
  color: var(--text-primary, #24324A);
  border-radius: 12px;
  padding: 10px 14px;
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.pwa-secondary-btn:hover {
  background: var(--bg-hover, #EFE6D5);
}

/* HỘP CẦU NỐI TIẾN ĐỘ HỌC TẬP (PROGRESS BRIDGE) */
.pwa-bridge-box {
  border-radius: 16px;
  padding: 14px;
  background: var(--bg-subtle, #F7F0E3);
  border: 1.5px dashed #F59E0B;
  margin-top: 12px;
}

.pwa-bridge-title {
  font-size: 14px;
  font-weight: 800;
  margin: 0 0 6px;
  color: var(--text-primary, #24324A);
}

.pwa-bridge-desc {
  font-size: 13px;
  line-height: 1.45;
  color: var(--text-secondary, #3E4E68);
  margin: 0 0 10px;
}

.pwa-bridge-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pwa-code-textarea {
  width: 100%;
  min-height: 76px;
  border-radius: 12px;
  border: 1.5px solid var(--border-color, #CBD5E1);
  background: var(--bg-surface, #FFFFFF);
  color: var(--text-primary, #24324A);
  padding: 10px 12px;
  font-family: var(--font-mono, monospace);
  font-size: 12.5px;
  box-sizing: border-box;
  resize: vertical;
  margin: 8px 0;
}

.pwa-status-msg {
  margin-top: 10px;
  padding: 9px 12px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 700;
}

.pwa-status-msg.ok {
  background: #ECFDF5;
  color: #065F46;
  border: 1px solid #6EE7B7;
}

.pwa-status-msg.err {
  background: #FFF1F2;
  color: #9F1239;
  border: 1px solid #FECDD3;
}

/* 4. THÔNG BÁO CẬP NHẬT AN TOÀN (EXAM-SAFE UPDATE TOAST) */
.pwa-update-pill {
  position: fixed;
  bottom: calc(env(safe-area-inset-bottom, 0px) + 20px);
  right: 20px;
  z-index: 9980;
  background: #24324A;
  color: #FFFFFF;
  border: 2px solid #F6B91A;
  border-radius: 999px;
  padding: 10px 18px;
  font-family: var(--font-main, 'Be Vietnam Pro', sans-serif);
  font-size: 13.5px;
  font-weight: 800;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.32);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: transform 0.16s ease;
}

.pwa-update-pill:hover {
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .pwa-update-pill {
    right: 14px;
    left: 14px;
    bottom: calc(env(safe-area-inset-bottom, 0px) + 76px);
    justify-content: center;
  }
}

/* 5. KHUNG XEM TRƯỚC & IN ĐỀ A4 NỘI BỘ DÀNH CHO STANDALONE APP / IPAD */
.beelio-print-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(15, 23, 42, 0.72);
  display: flex;
  flex-direction: column;
}

.beelio-print-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: calc(env(safe-area-inset-top, 0px) + 10px) 18px 10px;
  background: #24324A;
  color: #FFFFFF;
  font-family: var(--font-main, 'Be Vietnam Pro', sans-serif);
  border-bottom: 3px solid #F6B91A;
}

.beelio-print-toolbar-title {
  font-size: 14.5px;
  font-weight: 800;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.beelio-print-toolbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.beelio-print-btn-go {
  border: none;
  border-radius: 10px;
  padding: 8px 16px;
  background: #F6B91A;
  color: #24324A;
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 800;
  cursor: pointer;
}

.beelio-print-btn-close {
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 10px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.12);
  color: #FFFFFF;
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 700;
  cursor: pointer;
}

.beelio-print-iframe {
  flex: 1;
  width: 100%;
  border: none;
  background: #FFFFFF;
}

@media (max-width: 520px) {
  .beelio-print-toolbar {
    flex-wrap: wrap;
    gap: 8px;
    padding: calc(env(safe-area-inset-top, 0px) + 8px) 12px 8px;
  }

  .beelio-print-toolbar-title {
    flex: 1 1 100%;
    font-size: 13px;
  }

  .beelio-print-toolbar-actions {
    width: 100%;
    gap: 8px;
  }

  .beelio-print-btn-go,
  .beelio-print-btn-close {
    flex: 1 1 0%;
    padding: 8px 10px;
    font-size: 12.5px;
    text-align: center;
  }
}