/* ==========================================================================
   EduPeak iOS PWA Gatekeeper Styles
   Enforces Add to Home Screen on iOS Mobile devices
   ========================================================================== */

.gatekeeper-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: #090D16;
  color: #FFFFFF;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 24px 20px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  animation: fadeIn 0.4s ease-out;
}

.gatekeeper-overlay.fade-out {
  opacity: 0;
  transform: scale(0.98);
  transition: opacity 0.35s ease, transform 0.35s ease;
  pointer-events: none;
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(1.02); }
  to { opacity: 1; transform: scale(1); }
}

/* Ambient Radial Glows */
.gatekeeper-ambient-glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(60px);
  z-index: 0;
}

.glow-1 {
  width: 320px;
  height: 320px;
  top: -60px;
  right: -60px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.28) 0%, rgba(6, 182, 212, 0.15) 60%, transparent 80%);
}

.glow-2 {
  width: 280px;
  height: 280px;
  bottom: -40px;
  left: -40px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.22) 0%, rgba(245, 158, 11, 0.12) 60%, transparent 80%);
}

/* Central Card */
.gatekeeper-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 440px;
  background: rgba(18, 26, 43, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 28px;
  padding: 30px 22px 24px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  text-align: center;
}

/* Header & Icon */
.gatekeeper-header {
  margin-bottom: 22px;
}

.gatekeeper-icon-wrap {
  position: relative;
  width: 84px;
  height: 84px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gatekeeper-icon {
  width: 84px;
  height: 84px;
  border-radius: 20px;
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.4);
  position: relative;
  z-index: 2;
}

.icon-ring-pulse {
  position: absolute;
  inset: -6px;
  border-radius: 24px;
  border: 2px solid rgba(56, 189, 248, 0.6);
  animation: pulseRing 2s cubic-bezier(0.25, 1, 0.5, 1) infinite;
  z-index: 1;
}

@keyframes pulseRing {
  0% { transform: scale(0.95); opacity: 0.9; }
  100% { transform: scale(1.3); opacity: 0; }
}

.gatekeeper-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #38BDF8;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.gatekeeper-title {
  font-size: 22px;
  font-weight: 800;
  line-height: 1.25;
  color: #FFFFFF;
  margin-bottom: 10px;
  letter-spacing: -0.4px;
}

.gatekeeper-subtitle {
  font-size: 13.5px;
  line-height: 1.5;
  color: #94A3B8;
  margin: 0 auto;
}

.gatekeeper-subtitle strong {
  color: #F1F5F9;
}

/* Steps List */
.gatekeeper-steps {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
  text-align: left;
}

.step-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 12px 14px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.step-card:hover {
  transform: translateY(-1px);
  border-color: rgba(59, 130, 246, 0.4);
}

.step-num {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 10px;
  background: linear-gradient(135deg, #2563EB, #06B6D4);
  color: #FFFFFF;
  font-weight: 800;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.step-content {
  flex: 1;
}

.step-title {
  font-size: 13.5px;
  font-weight: 700;
  color: #F8FAFC;
  margin-bottom: 2px;
}

.step-desc {
  font-size: 12px;
  line-height: 1.4;
  color: #94A3B8;
}

.step-icon-box {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border-radius: 12px;
  background: rgba(37, 99, 235, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Status Bar & Recheck */
.gatekeeper-status-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 14px;
  padding: 10px 14px;
  margin-bottom: 16px;
}

.status-pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #38BDF8;
  box-shadow: 0 0 10px #38BDF8;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.9); opacity: 0.6; }
  50% { transform: scale(1.4); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.6; }
}

.status-text {
  font-size: 11.5px;
  color: #94A3B8;
  flex: 1;
  text-align: left;
}

.btn-recheck {
  background: rgba(37, 99, 235, 0.25);
  border: 1px solid rgba(37, 99, 235, 0.5);
  color: #60A5FA;
  font-weight: 700;
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-recheck:hover {
  background: #2563EB;
  color: #FFFFFF;
}

/* Developer Bypass Footer */
.gatekeeper-dev-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 14px;
}

.btn-dev-preview {
  width: 100%;
  background: transparent;
  border: 1px dashed rgba(255, 255, 255, 0.25);
  color: #CBD5E1;
  font-size: 12px;
  font-weight: 600;
  padding: 9px 14px;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-dev-preview:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.5);
}

.dev-hint {
  font-size: 10.5px;
  color: #64748B;
  margin-top: 6px;
}

/* Safari Bottom Bar Animated Arrow */
.safari-arrow-indicator {
  position: fixed;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  z-index: 100000;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.safari-arrow-indicator.active {
  opacity: 1;
}

.arrow-text {
  background: #2563EB;
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.6);
  letter-spacing: 0.5px;
}

.bouncing-arrow {
  font-size: 22px;
  color: #38BDF8;
  animation: bounce 1.2s infinite ease-in-out;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* App Lock Modifier */
.app-locked {
  filter: blur(12px);
  pointer-events: none;
  user-select: none;
  overflow: hidden;
  height: 100vh;
}

.app-unlocked {
  filter: none;
  pointer-events: auto;
  user-select: auto;
}