/* ═══════════════════════════════════════════════════════════════════
   pwa-install.css — نافذة تثبيت التطبيق (PWA)
   منصة مستر محمود عبد الدايم للرياضيات
   ملف مستقل بألوان ثابتة حتى يظهر بنفس الشكل في index.html وdashboard.html
   ═══════════════════════════════════════════════════════════════════ */

#pwa-install-overlay,
#pwa-install-overlay *,
#pwa-install-overlay *::before,
#pwa-install-overlay *::after {
  box-sizing: border-box;
}

#pwa-install-overlay {
  position: fixed;
  inset: 0;
  z-index: 999999;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .28s ease;
  font-family: 'Tajawal', 'Segoe UI', Arial, sans-serif;
}

#pwa-install-overlay.pwa-install-show {
  opacity: 1;
  pointer-events: auto;
}

#pwa-install-overlay.pwa-install-hide {
  opacity: 0;
}

.pwa-install-sheet {
  position: relative;
  width: 100%;
  max-width: 420px;
  background: #ffffff;
  border-radius: 24px 24px 0 0;
  padding: 28px 24px 26px;
  box-shadow: 0 -10px 40px rgba(15, 23, 42, 0.25);
  text-align: center;
  transform: translateY(24px);
  opacity: 0;
  transition: transform .32s cubic-bezier(.2,.8,.2,1), opacity .32s ease;
}

#pwa-install-overlay.pwa-install-show .pwa-install-sheet {
  transform: translateY(0);
  opacity: 1;
}

@media (min-width: 640px) {
  #pwa-install-overlay {
    align-items: center;
    padding: 20px;
  }
  .pwa-install-sheet {
    border-radius: 22px;
    max-width: 400px;
    transform: translateY(12px) scale(0.97);
  }
  #pwa-install-overlay.pwa-install-show .pwa-install-sheet {
    transform: translateY(0) scale(1);
  }
}

.pwa-install-close {
  position: absolute;
  top: 14px;
  left: 14px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: none;
  background: #F1F5F9;
  color: #64748B;
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.pwa-install-close:hover { background: #E2E8F0; }

.pwa-install-icon {
  width: 68px;
  height: 68px;
  border-radius: 18px;
  display: block;
  margin: 0 auto 16px;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.18);
}

.pwa-install-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: #0F172A;
  margin: 0 0 10px;
  line-height: 1.4;
}

.pwa-install-desc {
  font-size: 0.9rem;
  color: #64748B;
  line-height: 1.75;
  margin: 0 0 20px;
  overflow-wrap: break-word;
}

.pwa-install-steps {
  text-align: right;
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 14px;
  padding: 14px 16px;
  margin-bottom: 20px;
}
.pwa-install-step {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.85rem;
  color: #1E293B;
  line-height: 1.6;
  padding: 6px 0;
}
.pwa-install-step-num {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, #F97316, #C2410C);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pwa-install-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pwa-install-btn-primary {
  width: 100%;
  border: none;
  border-radius: 14px;
  padding: 14px 18px;
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: 800;
  color: #fff;
  cursor: pointer;
  background: linear-gradient(135deg, #F97316, #C2410C);
  box-shadow: 0 8px 20px rgba(249, 115, 22, 0.35);
  transition: transform .15s ease, box-shadow .15s ease;
}
.pwa-install-btn-primary:hover { box-shadow: 0 10px 24px rgba(249, 115, 22, 0.45); }
.pwa-install-btn-primary:active { transform: scale(0.98); }
.pwa-install-btn-primary:disabled { opacity: 0.7; cursor: default; }

.pwa-install-btn-secondary {
  width: 100%;
  border: none;
  background: transparent;
  color: #64748B;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  padding: 8px;
  cursor: pointer;
}
.pwa-install-btn-secondary:hover { color: #334155; }

.pwa-install-btn-full {
  background: #F1F5F9;
  color: #0F172A;
  border-radius: 14px;
  padding: 12px;
}

[data-theme="dark"] .pwa-install-sheet {
  background: #111827;
}
[data-theme="dark"] .pwa-install-title { color: #F1F5F9; }
[data-theme="dark"] .pwa-install-desc { color: #94A3B8; }
[data-theme="dark"] .pwa-install-steps {
  background: #0b1220;
  border-color: #1e293b;
}
[data-theme="dark"] .pwa-install-step { color: #E2E8F0; }
[data-theme="dark"] .pwa-install-close { background: #1e293b; color: #94A3B8; }
[data-theme="dark"] .pwa-install-btn-full { background: #1e293b; color: #F1F5F9; }