body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(59, 130, 246, 0.03) 2px, rgba(59, 130, 246, 0.03) 4px),
    repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(139, 92, 246, 0.02) 2px, rgba(139, 92, 246, 0.02) 4px);
  pointer-events: none;
  z-index: 0;
}

body > * {
  position: relative;
  z-index: 1;
}

.security-icon {
  display: inline-block;
  width: 20px;
  height: 20px;
  margin-right: 8px;
  vertical-align: middle;
  opacity: 0.7;
}

.bit-pattern {
  font-family: "Courier New", monospace;
  color: #8fb5ff;
  letter-spacing: 2px;
  font-size: 12px;
  opacity: 0.6;
}

.hidden-layer {
  position: relative;
}

.hidden-layer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.1), transparent 70%);
  pointer-events: none;
  opacity: 0.5;
}

.glow-effect {
  box-shadow: 0 0 20px var(--glow), 0 0 40px rgba(59, 130, 246, 0.2);
}

.hex-pattern {
  background-image: 
    repeating-linear-gradient(60deg, transparent, transparent 10px, rgba(59, 130, 246, 0.02) 10px, rgba(59, 130, 246, 0.02) 20px),
    repeating-linear-gradient(-60deg, transparent, transparent 10px, rgba(139, 92, 246, 0.02) 10px, rgba(139, 92, 246, 0.02) 20px);
}

.security-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 6px;
  font-size: 11px;
  color: #8fb5ff;
  font-weight: 600;
  letter-spacing: 0.5px;
}

@keyframes dataStream {
  0% { transform: translateX(-100%); opacity: 0; }
  50% { opacity: 1; }
  100% { transform: translateX(100%); opacity: 0; }
}

.data-stream {
  position: relative;
  overflow: hidden;
}

.data-stream::after {
  content: '01010110 01110011 01110100 01100101 01100111 01100001';
  position: absolute;
  top: 0;
  left: 0;
  width: 200%;
  font-family: "Courier New", monospace;
  color: rgba(143, 181, 255, 0.3);
  font-size: 10px;
  letter-spacing: 1px;
  animation: dataStream 15s linear infinite;
  pointer-events: none;
}

.icon-lock::before {
  content: '🔒';
  margin-right: 6px;
}

.icon-shield::before {
  content: '🛡️';
  margin-right: 6px;
}

.icon-key::before {
  content: '🔑';
  margin-right: 6px;
}

.icon-file::before {
  content: '📁';
  margin-right: 6px;
}

.icon-signal::before {
  content: '📡';
  margin-right: 6px;
}

.method-card {
  background: linear-gradient(180deg, var(--dark-card), var(--dark-card-2));
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-left: 3px solid var(--accent);
  padding: 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.method-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.5;
}

.method-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.4), 0 0 20px var(--glow);
  border-left-color: var(--accent-2);
}

.method-card h3 {
  color: #fff;
  font-size: 18px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
}

.method-card p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
}

.timeline {
  position: relative;
  padding-left: 30px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  opacity: 0.3;
}

.timeline-item {
  position: relative;
  margin-bottom: 24px;
  padding-left: 20px;
  color: var(--text-muted);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--glow);
}

.security-level {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 8px;
  font-size: 12px;
  color: #a7f3d0;
  margin-top: 16px;
  margin-bottom: 24px;
}

.security-level.high {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.4);
}

.security-level.medium {
  background: rgba(251, 191, 36, 0.12);
  border-color: rgba(251, 191, 36, 0.3);
  color: #fde68a;
}

.security-level.low {
  background: rgba(239, 68, 68, 0.12);
  border-color: rgba(239, 68, 68, 0.3);
  color: #fecaca;
}

.stego-visual {
  position: relative;
  padding: 20px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 12px;
  border: 1px solid rgba(59, 130, 246, 0.2);
  overflow: hidden;
}

.stego-visual::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
  animation: scanLine 3s ease-in-out infinite;
}

@keyframes scanLine {
  0% { left: -100%; }
  50% { left: 100%; }
  100% { left: -100%; }
}

.code-block {
  font-family: "Courier New", monospace;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-left: 3px solid var(--accent);
  padding: 16px;
  border-radius: 8px;
  color: #8fb5ff;
  font-size: 13px;
  line-height: 1.8;
  overflow-x: auto;
}

.method-badge {
  display: inline-block;
  padding: 4px 10px;
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 6px;
  font-size: 11px;
  color: #8fb5ff;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 2px;
  margin-top: 12px;
}

.method-card:hover .method-badge {
  background: rgba(59, 130, 246, 0.25);
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
}

.stego-data {
  position: relative;
  padding: 16px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 8px;
  font-family: "Courier New", monospace;
  color: #8fb5ff;
  font-size: 12px;
  overflow: hidden;
}

.stego-data::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  opacity: 0.6;
}

.watermark-effect {
  position: relative;
}

.watermark-effect::after {
  content: 'HIDDEN';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-45deg);
  font-size: 120px;
  font-weight: 900;
  color: rgba(59, 130, 246, 0.03);
  pointer-events: none;
  z-index: 0;
  letter-spacing: 20px;
}

.watermark-effect > * {
  position: relative;
  z-index: 1;
}

.encryption-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: 8px;
  font-size: 11px;
  color: #c4b5fd;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.integrity-check {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 6px;
  font-size: 11px;
  color: #a7f3d0;
  font-weight: 600;
}

.integrity-check::before {
  content: '✓';
  color: #10b981;
  font-weight: 900;
}