html, body { height: 100%; margin: 0; }
  * { box-sizing: border-box; }

  :root {
    --green: #00e676;
    --dev-accent: #42a5f5;
    --cyber-accent: #ff1744;
    --cyber-glow: #ff174480;
    --bg-dev: #f0f4f8;
    --bg-cyber: #0a0a0f;
    --surface-dev: #ffffff;
    --surface-cyber: #14141f;
    --text-dev: #1a2332;
    --text-cyber: #e0e0e8;
  }

  body {
    font-family: 'Outfit', sans-serif;
    transition: background 0.8s cubic-bezier(0.4, 0, 0.2, 1), color 0.6s ease;
    overflow-x: hidden;
  }

  body.dev-mode {
    background: var(--bg-dev);
    color: var(--text-dev);
  }

  body.cyber-mode {
    background: var(--bg-cyber);
    color: var(--text-cyber);
  }

  .nav-glass {
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all 0.6s ease;
  }

  .nav-glass.dev {
    background: rgba(240, 244, 248, 0.75);
    border-bottom: 1px solid rgba(66, 165, 245, 0.2);
    box-shadow: 0 4px 30px rgba(66, 165, 245, 0.1);
  }

  .nav-glass.cyber {
    background: rgba(10, 10, 15, 0.8);
    border-bottom: 1px solid rgba(255, 23, 68, 0.3);
    box-shadow: 0 4px 30px rgba(255, 23, 68, 0.15), 0 0 60px rgba(255, 23, 68, 0.05);
  }

  .toggle-btn {
    width: 64px; height: 34px;
    border-radius: 17px;
    position: relative;
    cursor: pointer;
    transition: all 0.4s ease;
    border: 2px solid;
  }

  .toggle-btn.dev {
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    border-color: var(--dev-accent);
  }

  .toggle-btn.cyber {
    background: linear-gradient(135deg, #1a0a0a, #2d0a0a);
    border-color: var(--cyber-accent);
    box-shadow: 0 0 15px var(--cyber-glow);
  }

  .toggle-thumb {
    width: 26px; height: 26px;
    border-radius: 50%;
    position: absolute;
    top: 2px;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
    display: flex; align-items: center; justify-content: center;
    font-size: 14px;
  }

  .toggle-thumb.dev {
    left: 2px;
    background: white;
    box-shadow: 0 2px 8px rgba(66, 165, 245, 0.4);
  }

  .toggle-thumb.cyber {
    left: 32px;
    background: #1a0505;
    box-shadow: 0 2px 12px rgba(255, 23, 68, 0.6);
  }

  .hero-avatar {
    width: 180px; height: 180px;
    border-radius: 50%;
    transition: all 0.8s ease;
    position: relative;
  }

  .hero-avatar.dev {
    background: linear-gradient(135deg, #42a5f5, #00e676);
    box-shadow: 0 8px 40px rgba(66, 165, 245, 0.3);
  }

  .hero-avatar.cyber {
    background: linear-gradient(135deg, #ff1744, #b71c1c);
    box-shadow: 0 8px 40px rgba(255, 23, 68, 0.4), 0 0 80px rgba(255, 23, 68, 0.15);
  }

  .skill-card {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: default;
  }

  .skill-card img{
    width: 48px;
    height: 48px;
  }

  .skill-card:hover {
    transform: translateY(-6px) scale(1.02);
  }

  .skill-card.dev {
    background: var(--surface-dev);
    border: 1px solid rgba(66, 165, 245, 0.15);
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  }

  .skill-card.dev:hover {
    box-shadow: 0 12px 40px rgba(66, 165, 245, 0.2);
    border-color: rgba(66, 165, 245, 0.4);
  }

  .skill-card.cyber {
    background: var(--surface-cyber);
    border: 1px solid rgba(255, 23, 68, 0.15);
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  }

  .skill-card.cyber:hover {
    box-shadow: 0 12px 40px rgba(255, 23, 68, 0.25), 0 0 30px rgba(255, 23, 68, 0.1);
    border-color: rgba(255, 23, 68, 0.5);
  }

  .project-card {
    transition: all 0.4s ease;
    overflow: hidden;
  }

  .project-card:hover { transform: translateY(-4px); }

  .project-card.dev {
    background: var(--surface-dev);
    border: 1px solid rgba(66, 165, 245, 0.12);
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  }

  .project-card.dev:hover {
    box-shadow: 0 16px 48px rgba(66, 165, 245, 0.18);
  }

  .project-card.cyber {
    background: var(--surface-cyber);
    border: 1px solid rgba(255, 23, 68, 0.12);
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  }

  .project-card.cyber:hover {
    box-shadow: 0 16px 48px rgba(255, 23, 68, 0.2), 0 0 40px rgba(255, 23, 68, 0.08);
  }

  .cert-card {
    transition: all 0.4s ease;
    position: relative;
    overflow: visible !important;
  }

  .cert-card:hover { transform: scale(1.03); }

  .cert-card.dev {
    background: var(--surface-dev);
    border: 1px solid rgba(66, 165, 245, 0.12);
  }

  .cert-card.dev:hover {
    border-color: rgba(66, 165, 245, 0.25);
    background: var(--surface-dev);
  }

  .cert-card.cyber {
    background: var(--surface-cyber);
    border: 1px solid rgba(255, 23, 68, 0.12);
  }

  .cert-card.cyber:hover {
    border-color: rgba(255, 23, 68, 0.25);
    background: var(--surface-cyber);
  }

  /* Tier 1 - Industry Standard (Gold) */
  .cert-card.tier-1.dev {
    background: var(--surface-dev);
    border: 2px solid rgba(255,193,7,0.4);
  }

  .cert-card.tier-1.dev:hover {
    border-color: rgba(255,193,7,0.6);
    background: var(--surface-dev);
  }

  .cert-card.tier-1.cyber {
    background: var(--surface-cyber);
    border: 2px solid rgba(255,193,7,0.35);
  }

  .cert-card.tier-1.cyber:hover {
    border-color: rgba(255,193,7,0.5);
    background: var(--surface-cyber);
  }

  /* Tier 2 - Achievement */
  .cert-card.tier-2.dev {
    background: var(--surface-dev);
    border: 1px solid rgba(66,165,245,0.2);
  }

  .cert-card.tier-2.dev:hover {
    border-color: rgba(66,165,245,0.4);
    background: var(--surface-dev);
  }

  .cert-card.tier-2.cyber {
    background: var(--surface-cyber);
    border: 1px solid rgba(255,23,68,0.2);
  }

  .cert-card.tier-2.cyber:hover {
    border-color: rgba(255,23,68,0.4);
    background: var(--surface-cyber);
  }

  .cert-tier-badge {
    position: absolute;
    top: -8px;
    right: 12px;
    display: flex;
    align-items: center;
    gap: 3px;
    padding: 3px 8px;
    border-radius: 16px;
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    font-family: 'JetBrains Mono', monospace;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    z-index: 10;
    white-space: nowrap;
  }

  @media (max-width: 640px) {
    .cert-tier-badge {
      top: -6px;
      right: 8px;
      padding: 2px 6px;
      font-size: 8px;
      gap: 2px;
    }
  }

  .cert-tier-badge.elite {
    background: linear-gradient(135deg, #9b59b6, #c77dde);
    color: #fff;
    box-shadow: 0 4px 12px rgba(155, 89, 182, 0.35);
  }

  .cert-tier-badge.rare {
    background: linear-gradient(135deg, #3498db, #5dade2);
    color: #fff;
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.35);
  }

  .cert-tier-badge.common {
    background: linear-gradient(135deg, #1abc9c, #16a085) !important;
    color: #ffffff !important;
    border: none !important;
    box-shadow: 0 2px 8px rgba(26, 188, 156, 0.4) !important;
    font-weight: 700 !important;
    animation: none;
  }

  .cert-tier-badge.tier-1 {
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    color: #1a1a0a;
    animation: shimmerBadge 3s ease-in-out infinite;
  }

  .cert-tier-badge.tier-2 {
    background: linear-gradient(135deg, rgba(100,150,200,0.25) 0%, rgba(120,120,160,0.15) 100%);
    color: inherit;
    border: 1.5px solid rgba(100,150,200,0.5);
    box-shadow: 0 2px 8px rgba(100,150,200,0.2), inset 0 1px 2px rgba(255,255,255,0.1);
    font-weight: 600;
  }

  @keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
  }

  @keyframes shimmerBadge {
    0% {
      box-shadow: 0 4px 12px rgba(255,215,0,0.2), 0 0 20px rgba(255,215,0,0.15);
    }
    50% {
      box-shadow: 0 4px 16px rgba(255,215,0,0.4), 0 0 30px rgba(255,215,0,0.25);
    }
    100% {
      box-shadow: 0 4px 12px rgba(255,215,0,0.2), 0 0 20px rgba(255,215,0,0.15);
    }
  }

  @keyframes premiumShimmer {
    0% {
      background: linear-gradient(90deg, transparent 0%, rgba(255,215,0,0.3) 50%, transparent 100%);
      background-position: -200% 0;
    }
    100% {
      background: linear-gradient(90deg, transparent 0%, rgba(255,215,0,0.3) 50%, transparent 100%);
      background-position: 200% 0;
    }
  }

  .skeleton {
    border-radius: 12px;
    animation: shimmer 1.8s infinite linear;
    background-size: 200% 100%;
  }

  .skeleton.dev {
    background: linear-gradient(90deg, #e8eef4 25%, #d4e0ed 50%, #e8eef4 75%);
  }

  .skeleton.cyber {
    background: linear-gradient(90deg, #1a1a28 25%, #252538 50%, #1a1a28 75%);
  }

  /* Premium Tier 1 shimmer effect */
  .cert-card.tier-1::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: inherit;
    pointer-events: none;
    opacity: 0;
    animation: premiumShimmer 3s ease-in-out infinite;
    background-size: 200% 100%;
  }

  .cert-card.tier-1 {
    overflow: visible !important;
  }

  .fade-in {
    animation: fadeSlideIn 0.5s ease forwards;
    opacity: 0;
  }

  @keyframes fadeSlideIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .section-title {
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: -0.02em;
  }

  .accent-dev { color: var(--dev-accent); }
  .accent-cyber { color: var(--cyber-accent); text-shadow: 0 0 20px var(--cyber-glow); }
  .accent-green { color: var(--green); }

  #heroTagline {
    transition: color 0.8s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.8s ease;
  }

  body.dev-mode #heroTagline {
    color: var(--text-dev);
    opacity: 0.95;
    font-weight: 500;
  }

  body.cyber-mode #heroTagline {
    opacity: 0.8;
  }

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

  .cyber-bg-particles {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none; z-index: 0;
    opacity: 0; transition: opacity 0.8s ease;
  }

  .cyber-bg-particles.active { opacity: 1; }

  .nav-link {
    transition: color 0.3s ease;
    position: relative;
  }

  .nav-link::after {
    content: '';
    position: absolute; bottom: -2px; left: 0;
    width: 0; height: 2px;
    transition: width 0.3s ease, background 0.3s ease;
  }

  .nav-link:hover::after { width: 100%; }
  .nav-link.dev:hover { color: var(--dev-accent); }
  .nav-link.dev::after { background: var(--dev-accent); }
  .nav-link.cyber:hover { color: var(--cyber-accent); }
  .nav-link.cyber::after { background: var(--cyber-accent); }

  .hero-icon-container {
    display: flex; align-items: center; justify-content: center;
    width: 100%; height: 100%;
    font-size: 64px;
    transition: all 0.6s ease;
  }

  .bg-gradient-dev {
    background: radial-gradient(ellipse at 30% 20%, rgba(66, 165, 245, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(0, 230, 118, 0.06) 0%, transparent 50%);
  }

  .bg-gradient-cyber {
    background: radial-gradient(ellipse at 30% 20%, rgba(255, 23, 68, 0.06) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(255, 23, 68, 0.03) 0%, transparent 50%);
  }

  .scroll-section { scroll-margin-top: 80px; }

  .image-card {
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .image-card:hover {
    transform: translateY(-4px);
  }

  .image-card.dev {
    border: 1px solid rgba(66, 165, 245, 0.12);
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  }

  .image-card.dev:hover {
    box-shadow: 0 16px 48px rgba(66, 165, 245, 0.18);
    border-color: rgba(66, 165, 245, 0.4);
  }

  .image-card.cyber {
    border: 1px solid rgba(255, 23, 68, 0.12);
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  }

  .image-card.cyber:hover {
    box-shadow: 0 16px 48px rgba(255, 23, 68, 0.2), 0 0 40px rgba(255, 23, 68, 0.08);
    border-color: rgba(255, 23, 68, 0.4);
  }

  .fade-in-image {
    animation: imageLoadFade 0.8s ease forwards;
  }

  @keyframes imageLoadFade {
    from {
      opacity: 0;
      filter: blur(8px);
    }
    to {
      opacity: 1;
      filter: blur(0);
    }
  }

  .floating-icons-container {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
    margin: 0 auto;
  }

  .floating-icons-container img {
    position: relative;
    z-index: 10;
    display: block;
  }

  #floatingIcons {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 300px;
    height: 300px;
    transform: translate(-50%, -50%);
    pointer-events: none;
  }

  .floating-icon {
    position: absolute;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-size: 24px;
    transition: all 0.8s ease;
    pointer-events: none;
  }

    .floating-icon img{
    width: 40px;
    height: 40px;
    }

  .floating-icon.dev {
    background: rgba(66, 165, 245, 0.1);
    border: 1px solid rgba(66, 165, 245, 0.3);
    box-shadow: 0 4px 20px rgba(66, 165, 245, 0.15);
  }

  .floating-icon.cyber {
    background: rgba(255, 23, 68, 0.12);
    border: 1px solid rgba(255, 23, 68, 0.4);
    box-shadow: 0 4px 20px rgba(255, 23, 68, 0.2);
  }

  @keyframes orbit1 {
    0% { transform: translate(100px, 20px); opacity: 0; }
    10% { opacity: 1; }
    50% { transform: translate(120px, 35px); }
    100% { transform: translate(100px, 20px); opacity: 1; }
  }

  @keyframes orbit2 {
    0% { transform: translate(-80px, 60px); opacity: 0; }
    10% { opacity: 1; }
    50% { transform: translate(-100px, 45px); }
    100% { transform: translate(-80px, 60px); opacity: 1; }
  }

  @keyframes orbit3 {
    0% { transform: translate(60px, -70px); opacity: 0; }
    10% { opacity: 1; }
    50% { transform: translate(80px, -50px); }
    100% { transform: translate(60px, -70px); opacity: 1; }
  }

  @keyframes orbit4 {
    0% { transform: translate(-90px, -40px); opacity: 0; }
    10% { opacity: 1; }
    50% { transform: translate(-110px, -60px); }
    100% { transform: translate(-90px, -40px); opacity: 1; }
  }

  @keyframes orbit5 {
    0% { transform: translate(30px, 85px); opacity: 0; }
    10% { opacity: 1; }
    50% { transform: translate(50px, 105px); }
    100% { transform: translate(30px, 85px); opacity: 1; }
  }

  .floating-icon:nth-child(1) { animation: orbit1 20s ease-in-out infinite; }
  .floating-icon:nth-child(2) { animation: orbit2 24s ease-in-out infinite reverse; }
  .floating-icon:nth-child(3) { animation: orbit3 18s ease-in-out infinite; }
  .floating-icon:nth-child(4) { animation: orbit4 22s ease-in-out infinite reverse; }
  .floating-icon:nth-child(5) { animation: orbit5 26s ease-in-out infinite; }

  @keyframes glitchShift {
    0% { transform: translate(0, 0); }
    20% { transform: translate(-3px, 2px); }
    40% { transform: translate(3px, -2px); }
    60% { transform: translate(-2px, 3px); }
    80% { transform: translate(2px, -3px); }
    100% { transform: translate(0, 0); }
  }

  @keyframes glitchFlicker {
    0%, 100% { opacity: 1; }
    14% { opacity: 0.9; }
    15% { opacity: 0.4; }
    49% { opacity: 0.4; }
    50% { opacity: 1; }
  }

  @keyframes colorGlitch {
    0% { mix-blend-mode: normal; }
    20% { mix-blend-mode: screen; }
    40% { mix-blend-mode: multiply; }
    60% { mix-blend-mode: overlay; }
    80% { mix-blend-mode: color-dodge; }
    100% { mix-blend-mode: normal; }
  }

  .glitch-active {
    animation: glitchShift 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
  }

  .glitch-active::before,
  .glitch-active::after {
    content: attr(data-text);
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    opacity: 0.8;
    z-index: -1;
  }

  .glitch-active::before {
    animation: glitchFlicker 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    color: #00e676;
    z-index: 2;
  }

  .glitch-active::after {
    animation: glitchFlicker 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.05s;
    color: #ff1744;
    z-index: 2;
  }

  @keyframes scanlines {
    0% { background-position: 0 0; }
    100% { background-position: 0 100%; }
  }

  .glitch-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 999;
    opacity: 0;
    mix-blend-mode: screen;
  }

  .glitch-screen.active {
    animation: scanlines 0.2s steps(20, end) 3;
    opacity: 1;
    background: repeating-linear-gradient(
      0deg,
      rgba(255, 23, 68, 0.15) 0px,
      rgba(255, 23, 68, 0.15) 2px,
      transparent 2px,
      transparent 4px
    );
  }

#mobileMenu {
  background: var(--surface-dev);
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: flex;
  flex-direction: column;
}

#mobileMenu > div {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

#mobileMenu .space-y-3 {
  overflow-y: auto;
  flex: 1;
  padding-right: 8px;
}

#mobileMenu .space-y-3::-webkit-scrollbar {
  width: 6px;
}

#mobileMenu .space-y-3::-webkit-scrollbar-track {
  background: transparent;
}

#mobileMenu .space-y-3::-webkit-scrollbar-thumb {
  background: rgba(66, 165, 245, 0.3);
  border-radius: 3px;
}

#mobileMenu .space-y-3::-webkit-scrollbar-thumb:hover {
  background: rgba(66, 165, 245, 0.5);
}

body.cyber-mode #mobileMenu .space-y-3::-webkit-scrollbar-thumb {
  background: rgba(255, 23, 68, 0.3);
}

body.cyber-mode #mobileMenu .space-y-3::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 23, 68, 0.5);
}

  body.cyber-mode #mobileMenu {
    background: var(--surface-cyber);
  }

  #mobileMenu.active {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  #mobileMenuBackdrop.active {
    opacity: 1;
    pointer-events: auto;
  }

  #mobileMenu button {
    background: none;
    border: none;
    cursor: pointer;
  }

  /* Badge Card Styling */
  .badge-card {
    transition: all 0.4s ease;
    position: relative;
    overflow: visible !important;
  }

  .badge-card:hover { transform: scale(1.05); }

  .badge-card.dev {
    background: var(--surface-dev);
    border: 1px solid rgba(66, 165, 245, 0.12);
  }

  .badge-card.dev:hover { 
    border-color: rgba(66, 165, 245, 0.25);
    background: var(--surface-dev);
  }

  .badge-card.cyber {
    background: var(--surface-cyber);
    border: 1px solid rgba(255, 23, 68, 0.12);
  }

  .badge-card.cyber:hover { 
    border-color: rgba(255, 23, 68, 0.25);
    background: var(--surface-cyber);
  }

  /* COMMON cards only - green border */
  .badge-card.common.dev {
    background: var(--surface-dev);
    border: 1px solid #00e676 !important;
  }

  .badge-card.common.dev:hover {
    border-color: #00e676 !important;
    background: var(--surface-dev);
  }

  .badge-card.common.cyber {
    background: var(--surface-cyber);
    border: 1px solid rgba(0, 230, 118, 0.22) !important
  }

  .badge-card.common.cyber:hover {
    border-color: #00e676 !important;
    background: var(--surface-cyber);
  }

  /* ELITE cards - purple border from badge color */
  .badge-card.elite.dev {
    background: var(--surface-dev);
    border: 1px solid #9b59b6 !important;
  }

  .badge-card.elite.dev:hover {
    border-color: #9b59b6 !important;
    background: var(--surface-dev);
  }

  .badge-card.elite.cyber {
    background: var(--surface-cyber);
    border: 1px solid #9b59b6 !important;
  }

  .badge-card.elite.cyber:hover {
    border-color: #9b59b6 !important;
    background: var(--surface-cyber);
  }

  /* RARE cards - blue border from badge color */
  .badge-card.rare.dev {
    background: var(--surface-dev);
    border: 1px solid #3498db !important;
  }

  .badge-card.rare.dev:hover {
    border-color: #3498db !important;
    background: var(--surface-dev);
  }

  .badge-card.rare.cyber {
    background: var(--surface-cyber);
    border: 1px solid #3498db !important;
  }

  .badge-card.rare.cyber:hover {
    border-color: #3498db !important;
    background: var(--surface-cyber);
  }