:root {
  --cyber-blue: #00d4ff;
  --cyber-orange: #ff6b35;
  --cyber-aqua: #00ffcc;
  --cyber-purple: #2d1b69;
  --cyber-dark-purple: #1a0f3a;
  --cyber-black: #0a0a0a;
  --cyber-dark-blue: #001122;
  --cyber-glow-blue: rgba(0, 212, 255, 0.3);
  --cyber-glow-orange: rgba(255, 107, 53, 0.3);
  --cyber-glow-aqua: rgba(0, 255, 204, 0.3);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Rajdhani", sans-serif;
  background: linear-gradient(
    135deg,
    var(--cyber-black) 0%,
    var(--cyber-dark-purple) 50%,
    var(--cyber-dark-blue) 100%
  );
  color: var(--cyber-aqua);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Cyberpunk Grid Background */
.cyber-grid {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: linear-gradient(rgba(0, 212, 255, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.1) 1px, transparent 1px);
  background-size: 50px 50px;
  z-index: -2;
  animation: gridPulse 4s ease-in-out infinite;
}

.cyber-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
      circle at 20% 80%,
      var(--cyber-glow-blue) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 20%,
      var(--cyber-glow-orange) 0%,
      transparent 50%
    );
  z-index: -1;
  opacity: 0.3;
}

@keyframes gridPulse {
  0%,
  100% {
    opacity: 0.3;
  }
  50% {
    opacity: 0.6;
  }
}

/* Header Styles */
.cyber-header {
  text-align: center;
  padding: 4rem 2rem 2rem;
  position: relative;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
}

.cyber-title {
  font-family: "Orbitron", monospace;
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 900;
  margin-bottom: 1rem;
  position: relative;
}

.glitch {
  position: relative;
  color: var(--cyber-aqua);
  text-shadow: 0 0 10px var(--cyber-blue), 0 0 20px var(--cyber-blue),
    0 0 40px var(--cyber-blue);
  animation: glitchText 3s infinite;
}

.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.glitch::before {
  animation: glitchBefore 3s infinite;
  color: var(--cyber-orange);
  z-index: -1;
}

.glitch::after {
  animation: glitchAfter 3s infinite;
  color: var(--cyber-aqua);
  z-index: -2;
}

@keyframes glitchText {
  0%,
  90%,
  100% {
    transform: translate(0);
  }
  20% {
    transform: translate(-2px, 2px);
  }
  40% {
    transform: translate(-2px, -2px);
  }
  60% {
    transform: translate(2px, 2px);
  }
  80% {
    transform: translate(2px, -2px);
  }
}

@keyframes glitchBefore {
  0%,
  90%,
  100% {
    transform: translate(0);
  }
  20% {
    transform: translate(2px, -2px);
  }
  40% {
    transform: translate(-2px, 2px);
  }
  60% {
    transform: translate(-2px, -2px);
  }
  80% {
    transform: translate(2px, 2px);
  }
}

@keyframes glitchAfter {
  0%,
  90%,
  100% {
    transform: translate(0);
  }
  20% {
    transform: translate(-2px, -2px);
  }
  40% {
    transform: translate(2px, 2px);
  }
  60% {
    transform: translate(2px, -2px);
  }
  80% {
    transform: translate(-2px, 2px);
  }
}

.cyber-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  font-weight: 300;
  color: var(--cyber-aqua);
  opacity: 0.8;
}

.typing-text {
  border-right: 2px solid var(--cyber-orange);
  animation: typing 7s steps(60) 1s infinite, blink 1s infinite;
  white-space: nowrap;
  overflow: hidden;
  display: inline-block;
}

@keyframes typing {
  0% {
    width: 0;
  }
  50% {
    width: 50%;
  }
  70% {
    width: 50%;
  }
  100% {
    width: 0;
  }
}

@keyframes blink {
  0%,
  50% {
    border-color: var(--cyber-orange);
  }
  51%,
  100% {
    border-color: transparent;
  }
}

.header-decoration {
  margin-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.cyber-line {
  width: 100px;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--cyber-blue),
    transparent
  );
  animation: linePulse 2s ease-in-out infinite;
}

.cyber-dots {
  display: flex;
  gap: 0.5rem;
}

.cyber-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyber-orange);
  box-shadow: 0 0 10px var(--cyber-orange);
  animation: dotPulse 1.5s ease-in-out infinite;
}

.cyber-dots span:nth-child(2) {
  animation-delay: 0.3s;
}
.cyber-dots span:nth-child(3) {
  animation-delay: 0.6s;
}

@keyframes linePulse {
  0%,
  100% {
    opacity: 0.5;
    transform: scaleX(1);
  }
  50% {
    opacity: 1;
    transform: scaleX(1.2);
  }
}

@keyframes dotPulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.7;
  }
  50% {
    transform: scale(1.3);
    opacity: 1;
  }
}

/* Navigation Styles */
.cyber-nav {
  padding: 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--cyber-blue);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.nav-btn {
  position: relative;
  background: transparent;
  border: 2px solid var(--cyber-purple);
  color: var(--cyber-aqua);
  padding: 0.8rem 1.5rem;
  font-family: "Orbitron", monospace;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s ease;
  overflow: hidden;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.nav-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    var(--cyber-glow-blue),
    transparent
  );
  transition: left 0.5s ease;
}

.nav-btn:hover::before {
  left: 100%;
}

.nav-btn:hover {
  border-color: var(--cyber-blue);
  color: var(--cyber-blue);
  box-shadow: 0 0 20px var(--cyber-glow-blue),
    inset 0 0 20px var(--cyber-glow-blue);
  transform: translateY(-2px);
}

.nav-btn.active {
  border-color: var(--cyber-orange);
  color: var(--cyber-orange);
  background: var(--cyber-glow-orange);
  box-shadow: 0 0 30px var(--cyber-glow-orange),
    inset 0 0 30px var(--cyber-glow-orange);
}

.btn-text {
  position: relative;
  z-index: 2;
}

.btn-glow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--cyber-glow-blue);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.nav-btn:hover .btn-glow {
  opacity: 0.2;
}

/* Main Content */
.cyber-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

.cyber-card {
  margin-bottom: 2rem;
  background: rgba(45, 27, 105, 0.1);
  border: 1px solid var(--cyber-purple);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s ease;
  position: relative;
}

.cyber-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--cyber-blue),
    var(--cyber-orange),
    var(--cyber-aqua)
  );
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.cyber-card:hover::before {
  transform: scaleX(1);
}

.cyber-card:hover {
  border-color: var(--cyber-blue);
  box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
  transform: translateY(-5px);
}

.cyber-collapse-btn {
  width: 100%;
  background: rgba(26, 15, 58, 0.8);
  border: none;
  color: var(--cyber-aqua);
  padding: 1.5rem;
  font-family: "Orbitron", monospace;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.cyber-collapse-btn:hover {
  background: rgba(0, 212, 255, 0.1);
  color: var(--cyber-blue);
}

.collapse-icon {
  font-size: 1.2rem;
  transition: transform 0.3s ease;
  color: var(--cyber-orange);
}

.collapse-text {
  flex: 1;
  text-align: left;
}

.btn-circuit {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  border: 2px solid var(--cyber-orange);
  border-radius: 50%;
}

.btn-circuit::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  background: var(--cyber-orange);
  border-radius: 50%;
  animation: circuitPulse 2s ease-in-out infinite;
}

@keyframes circuitPulse {
  0%,
  100% {
    opacity: 0.5;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.5);
  }
}

.cyber-content {
  display: none;
  padding: 2rem;
  background: rgba(10, 10, 10, 0.5);
  border-top: 1px solid var(--cyber-purple);
}

.cyber-content.show {
  display: block;
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.image-section {
  position: relative;
}

.cyber-frame {
  position: relative;
  border: 2px solid var(--cyber-blue);
  border-radius: 8px;
  overflow: hidden;
  background: rgba(0, 212, 255, 0.05);
}

.cyber-frame img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.3s ease;
}

.cyber-frame:hover img {
  transform: scale(1.05);
}

.frame-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    45deg,
    transparent 30%,
    var(--cyber-glow-blue) 50%,
    transparent 70%
  );
  opacity: 0;
  transition: opacity 0.3s ease;
}

.cyber-frame:hover .frame-overlay {
  opacity: 0.3;
}

.text-section {
  padding-left: 1rem;
}

.content-title {
  font-family: "Orbitron", monospace;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cyber-orange);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.content-text {
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--cyber-aqua);
  margin-bottom: 1rem;
  opacity: 0.9;
}

/* Resource Grid */
.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.resource-item {
  background: rgba(45, 27, 105, 0.2);
  border: 1px solid var(--cyber-purple);
  border-radius: 8px;
  padding: 1.5rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.resource-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--cyber-orange);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.resource-item:hover::before {
  transform: scaleX(1);
}

.resource-item:hover {
  border-color: var(--cyber-orange);
  box-shadow: 0 10px 30px var(--cyber-glow-orange);
  transform: translateY(-5px);
}

.video-frame {
  position: relative;
  width: 100%;
  height: 200px;
  margin-bottom: 1rem;
  border: 2px solid var(--cyber-blue);
  border-radius: 8px;
  overflow: hidden;
}

.video-frame iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    45deg,
    transparent,
    var(--cyber-glow-blue),
    transparent
  );
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.video-frame:hover .video-overlay {
  opacity: 0.2;
}

.resource-icon {
  font-size: 3rem;
  text-align: center;
  margin-bottom: 1rem;
  filter: hue-rotate(180deg) saturate(2);
}

.resource-title {
  font-family: "Orbitron", monospace;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--cyber-blue);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.resource-text {
  font-size: 1rem;
  line-height: 1.5;
  color: var(--cyber-aqua);
  opacity: 0.8;
}

.cyber-link {
  color: var(--cyber-orange);
  text-decoration: none;
  position: relative;
  transition: all 0.3s ease;
}

.cyber-link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--cyber-orange);
  transition: width 0.3s ease;
}

.cyber-link:hover::after {
  width: 100%;
}

.cyber-link:hover {
  color: var(--cyber-blue);
  text-shadow: 0 0 10px var(--cyber-blue);
}

/* Footer */
.cyber-footer {
  margin-top: 4rem;
  padding: 2rem;
  background: rgba(26, 15, 58, 0.8);
  border-top: 2px solid var(--cyber-purple);
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-line {
  width: 200px;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--cyber-blue),
    transparent
  );
  margin: 0 auto 1rem;
  animation: linePulse 3s ease-in-out infinite;
}

.footer-text {
  font-family: "Orbitron", monospace;
  font-size: 1rem;
  font-weight: 600;
  color: var(--cyber-aqua);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-subtext {
  font-size: 0.9rem;
  color: var(--cyber-aqua);
  opacity: 0.7;
  margin-bottom: 1rem;
}

.footer-decoration {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 1rem;
}

.footer-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyber-orange);
  box-shadow: 0 0 10px var(--cyber-orange);
  animation: dotPulse 2s ease-in-out infinite;
}

.footer-dot:nth-child(2) {
  animation-delay: 0.5s;
}
.footer-dot:nth-child(3) {
  animation-delay: 1s;
}

/* Responsive Design */
@media (max-width: 768px) {
  .cyber-header {
    padding: 2rem 1rem;
  }

  .cyber-main {
    padding: 1rem;
  }

  .nav-container {
    flex-direction: column;
    align-items: center;
  }

  .nav-btn {
    width: 100%;
    max-width: 300px;
  }

  .content-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .text-section {
    padding-left: 0;
  }

  .resource-grid {
    grid-template-columns: 1fr;
  }

  .cyber-collapse-btn {
    font-size: 1rem;
    padding: 1rem;
  }

  .collapse-text {
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .cyber-title {
    font-size: 2rem;
  }

  .cyber-subtitle {
    font-size: 1rem;
  }

  .nav-btn {
    font-size: 0.8rem;
    padding: 0.6rem 1rem;
  }

  .cyber-content {
    padding: 1rem;
  }

  .content-title {
    font-size: 1.2rem;
  }

  .content-text {
    font-size: 1rem;
  }
}

/* Hidden state for filtered items */
.cyber-card.hidden {
  display: none;
}

/* Smooth transitions for show/hide */
.cyber-card {
  transition: all 0.3s ease, opacity 0.3s ease, transform 0.3s ease;
}

.cyber-card.show {
  opacity: 1;
  transform: translateY(0);
}

.cyber-card.hide {
  opacity: 0;
  transform: translateY(-20px);
}

/* Credly badge styling */
.cyber-card[data-category="certs"] .cyber-frame {
  display: flex; /* Flexbox for centering */
  justify-content: center; /* Horizontal center */
  align-items: center; /* Vertical center */
  min-height: 350px; /* Taller box to fit badge nicely */
  padding: 1rem; /* Some inner spacing */
  background: rgba(0, 212, 255, 0.05); /* subtle glow background */
  border-radius: 8px;
  border: 2px solid var(--cyber-blue);
  overflow: hidden;
}

/* Make the badge slightly bigger */
.cyber-card[data-category="certs"] iframe {
  width: 200px !important; /* Increase width */
  height: 330px !important; /* Increase height */
  border-radius: 4px; /* optional slight rounding */
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.4); /* subtle glow */
}
/* Lightbox overlay for expanded images */
#img-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.85);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

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

#img-overlay img {
  max-width: 95%;
  max-height: 95%;
  border: 3px solid var(--cyber-blue);
  border-radius: 8px;
  box-shadow: 0 0 40px rgba(0, 212, 255, 0.7);
  transition: transform 0.3s ease;
}

#img-overlay.show img {
  transform: scale(1.05);
}

#img-close {
  position: absolute;
  top: 20px;
  right: 30px;
  color: var(--cyber-orange);
  font-size: 3rem;
  font-weight: bold;
  cursor: pointer;
  z-index: 10000;
}

.frame-overlay {
  pointer-events: none;
}

/* Mobile: don't keep the filter bar stuck to the top */
@media (max-width: 768px) {
  .cyber-nav {
    position: static;
    top: auto;
    padding: 0.75rem 1rem;
  }

  /* If buttons overflow, let them scroll horizontally instead of wrapping badly */
  .nav-buttons {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    gap: 0.5rem;
    padding-bottom: 0.5rem;
  }

  .cyber-btn {
    flex: 0 0 auto;
  }
}

/* Mobile-safe background layering (avoid negative z-index on fixed elements) */
.cyber-grid,
.cyber-overlay {
  z-index: 0;
  pointer-events: none;
}

.cyber-header,
.cyber-nav,
.cyber-main,
.cyber-footer {
  position: relative;
  z-index: 1;
}

@media (max-width: 768px) {
  .cyber-header {
    padding: 2rem 1rem 1rem;
  }

  .typing-text {
    animation: none;
    border-right: 0;
    white-space: normal;
    overflow: visible;
    display: block;
  }
}

/* --- Fix glitch stacking on mobile (and generally) --- */
.glitch{
  display: inline-block;      /* keeps pseudo-elements aligned to text width */
  position: relative;
  z-index: 2;                 /* establish a safe stacking context above header bg */
  line-height: 1.05;
}

.glitch::before,
.glitch::after{
  z-index: 1;                 /* sit above the background */
  pointer-events: none;
}

.glitch::before{ z-index: 1; }
.glitch::after { z-index: 1; }

@media (max-width: 480px){
  .cyber-title{
    font-size: clamp(2rem, 9vw, 2.8rem);
    margin-bottom: 0.5rem;
  }
}