:root {
  --bg: #0a0a0a;
  --panel: #1a1a1a;
  --text: #ffffff;
  --muted: #cccccc;
  --accent: #ff0080;
  --border: #ff0080;
  --neon-pink: #ff0080;
  --neon-cyan: #00ffff;
  --neon-green: #00ff00;
  --neon-yellow: #ffff00;
  --neon-red: #ff0040;
  --arcade-purple: #8000ff;
  --arcade-blue: #0080ff;
  --dark-bg: #000000;
  --grid-color: rgba(255, 0, 128, 0.1);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: 'Orbitron', 'Courier New', monospace, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--dark-bg);
  color: var(--text);
  background-image: 
    radial-gradient(circle at 20% 80%, var(--neon-pink) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, var(--neon-cyan) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, var(--arcade-purple) 0%, transparent 50%),
    linear-gradient(45deg, var(--grid-color) 25%, transparent 25%), 
    linear-gradient(-45deg, var(--grid-color) 25%, transparent 25%), 
    linear-gradient(45deg, transparent 75%, var(--grid-color) 75%), 
    linear-gradient(-45deg, transparent 75%, var(--grid-color) 75%);
  background-size: 100% 100%, 100% 100%, 100% 100%, 20px 20px, 20px 20px, 20px 20px, 20px 20px;
  background-position: 0 0, 0 0, 0 0, 0 0, 0 10px, 10px -10px, -10px 0px;
  background-attachment: fixed;
  overflow-x: hidden;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: linear-gradient(135deg, var(--dark-bg) 0%, var(--panel) 50%, var(--dark-bg) 100%);
  border-bottom: 3px solid var(--neon-pink);
  box-shadow: 
    0 0 30px var(--neon-pink),
    0 4px 20px rgba(0, 0, 0, 0.8);
  position: relative;
  overflow: hidden;
}

.app-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent, 
    var(--neon-cyan), 
    var(--neon-pink), 
    var(--neon-yellow), 
    transparent
  );
  animation: neonSweep 4s infinite;
  opacity: 0.3;
}

@keyframes neonSweep {
  0% { left: -100%; }
  50% { left: 100%; }
  100% { left: 100%; }
}
.app-header h1 { 
  font-size: 28px; 
  margin: 0; 
  color: var(--neon-pink);
  text-shadow: 
    0 0 10px var(--neon-pink),
    0 0 20px var(--neon-pink),
    0 0 30px var(--neon-pink),
    0 0 40px var(--neon-pink);
  font-weight: 900;
  letter-spacing: 3px;
  text-transform: uppercase;
  animation: titleGlow 2s ease-in-out infinite alternate;
  position: relative;
  z-index: 1;
}

@keyframes titleGlow {
  from { 
    text-shadow: 
      0 0 10px var(--neon-pink),
      0 0 20px var(--neon-pink),
      0 0 30px var(--neon-pink),
      0 0 40px var(--neon-pink);
  }
  to { 
    text-shadow: 
      0 0 15px var(--neon-pink),
      0 0 25px var(--neon-pink),
      0 0 35px var(--neon-pink),
      0 0 50px var(--neon-pink);
  }
}
.search-container {
  flex: 1;
  max-width: 300px;
  margin: 0 20px;
}
.search-input {
  width: 100%;
  background: var(--dark-bg);
  border: 2px solid var(--neon-cyan);
  color: var(--text);
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-family: 'Orbitron', 'Courier New', monospace;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: 
    inset 0 0 20px rgba(0, 255, 255, 0.1),
    0 0 20px var(--neon-cyan);
  transition: all 0.3s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--neon-pink);
  box-shadow: 
    inset 0 0 30px rgba(255, 0, 128, 0.2),
    0 0 30px var(--neon-pink);
  transform: scale(1.02);
}

.search-input::placeholder {
  color: var(--muted);
  font-family: 'Orbitron', 'Courier New', monospace;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.controls button { 
  margin-left: 8px; 
  background: linear-gradient(135deg, var(--neon-cyan) 0%, var(--neon-pink) 100%);
  border: 2px solid var(--neon-cyan);
  color: var(--dark-bg);
  padding: 10px 20px;
  border-radius: 8px;
  font-family: 'Orbitron', 'Courier New', monospace;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: 
    0 0 20px var(--neon-cyan),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  transition: all 0.3s ease;
  cursor: pointer;
  position: relative;
  z-index: 1;
}

.controls button:hover {
  background: linear-gradient(135deg, var(--neon-pink) 0%, var(--neon-yellow) 100%);
  box-shadow: 
    0 0 30px var(--neon-pink),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
  transform: translateY(-2px) scale(1.05);
}

.instructions-link {
  background: linear-gradient(135deg, var(--neon-green) 0%, var(--neon-cyan) 100%);
  color: var(--dark-bg);
  text-decoration: none;
  padding: 10px 20px;
  border-radius: 8px;
  margin-right: 8px;
  font-size: 12px;
  font-family: 'Orbitron', 'Courier New', monospace;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: 2px solid var(--neon-green);
  box-shadow: 
    0 0 20px var(--neon-green),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  transition: all 0.3s ease;
  position: relative;
  z-index: 1;
}

.instructions-link:hover { 
  background: linear-gradient(135deg, var(--neon-yellow) 0%, var(--neon-pink) 100%);
  box-shadow: 
    0 0 30px var(--neon-yellow),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
  transform: translateY(-2px) scale(1.05);
}

.layout { display: grid; gap: 12px; padding: 12px; }
.layout.two-col { grid-template-columns: 2fr 1fr; align-items: start; }
.layout.three-col { grid-template-columns: 1fr 2fr 1fr; align-items: start; }
.gallery-panel { max-height: calc(100vh - 140px); overflow: auto; }

.panel {
  background: linear-gradient(135deg, var(--dark-bg) 0%, var(--panel) 50%, var(--dark-bg) 100%);
  border: 2px solid var(--neon-pink);
  border-radius: 12px;
  padding: 20px;
  width: 100%;
  max-width: 1000px;
  box-shadow: 
    0 0 30px var(--neon-pink),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}

.panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, 
    var(--neon-cyan), 
    var(--neon-pink), 
    var(--neon-yellow), 
    var(--neon-green)
  );
  animation: panelGlow 3s ease-in-out infinite alternate;
}

@keyframes panelGlow {
  from { opacity: 0.7; }
  to { opacity: 1; }
}

.panel h2 { 
  margin: 0 0 15px 0; 
  font-size: 20px; 
  color: var(--neon-cyan);
  text-shadow: 
    0 0 10px var(--neon-cyan),
    0 0 20px var(--neon-cyan);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-family: 'Orbitron', 'Courier New', monospace;
  position: relative;
  z-index: 1;
}

input[type="file"] {
  background: #0e131c;
  border: 1px dashed var(--border);
  border-radius: 6px;
  color: var(--muted);
  padding: 10px;
  width: 100%;
}

.library-list { list-style: none; padding: 0; margin: 0; }
.library-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 6px;
  border-bottom: 1px solid var(--border);
}
.library-list .meta { color: var(--muted); font-size: 12px; }

button {
  background: #1a2230;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
}
button:hover { border-color: var(--accent); }

.play-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
}

#screen {
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
  border: 1px solid var(--border);
  background: #000;
}

.game-controls { margin-top: 8px; }
.hint { color: var(--muted); font-size: 12px; }

@media (max-width: 1100px) {
  .layout { grid-template-columns: 1fr; }
  #screen { width: 100%; height: 100%; }
  .app-header {
    flex-direction: column;
    gap: 12px;
    align-items: stretch;
  }
  .search-container {
    max-width: none;
    margin: 0;
  }
  .controls {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
  }
}

.stage {
  position: relative;
  width: 100%;
  max-width: 960px;
  aspect-ratio: 4 / 3;
  background: var(--dark-bg);
  border: 4px solid var(--neon-pink);
  border-radius: 15px;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 
    0 0 50px var(--neon-pink),
    0 0 100px var(--neon-cyan),
    inset 0 0 30px rgba(255, 0, 128, 0.1);
  position: relative;
  overflow: hidden;
}

.stage::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    linear-gradient(90deg, transparent 49%, var(--neon-pink) 50%, transparent 51%),
    linear-gradient(0deg, transparent 49%, var(--neon-cyan) 50%, transparent 51%);
  background-size: 2px 100%, 100% 2px;
  animation: scanlines 0.1s linear infinite;
  pointer-events: none;
  opacity: 0.3;
}

@keyframes scanlines {
  0% { transform: translateY(0); }
  100% { transform: translateY(4px); }
}

.scanlines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255,255,255,0.06) 0px,
    rgba(255,255,255,0.06) 1px,
    rgba(0,0,0,0) 2px,
    rgba(0,0,0,0) 3px
  );
  mix-blend-mode: overlay;
  border-radius: 8px;
}

.stage-controls { position: absolute; top: 8px; right: 8px; display: flex; gap: 6px; }

@media (max-width: 1100px) { .layout.two-col, .layout.three-col { grid-template-columns: 1fr; } }

/* Ad Modal Styles */
.ad-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ad-modal-content {
    background: #1a1f2e;
    border: 2px solid #374151;
    border-radius: 12px;
    padding: 20px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.ad-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.ad-header h3 {
    color: #e7e9ee;
    margin: 0;
    font-size: 18px;
}

.skip-ad-btn {
    background: #dc2626;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background 0.2s;
}

.skip-ad-btn:hover {
    background: #b91c1c;
}

.ad-container {
    margin-bottom: 15px;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #111826;
    border-radius: 8px;
    border: 1px solid #374151;
}

.ad-slot {
    width: 100%;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6b7280;
    font-size: 14px;
}

.ad-footer {
    text-align: center;
}

.ad-footer p {
    color: #9ca3af;
    margin: 0;
    font-size: 14px;
}

/* Ad loading animation */
.ad-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.ad-loading .spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #374151;
    border-top: 3px solid #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Browser Warning Styles */
.browser-warning {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10001;
  backdrop-filter: blur(10px);
}

.warning-content {
  background: linear-gradient(135deg, var(--dark-bg) 0%, #1a1a1a 100%);
  border: 3px solid var(--neon-red);
  border-radius: 15px;
  padding: 40px;
  text-align: center;
  max-width: 500px;
  box-shadow: 0 0 40px var(--neon-red);
  animation: warningPulse 2s ease-in-out infinite;
}

.warning-content h2 {
  color: var(--neon-red);
  font-family: 'Orbitron', monospace;
  font-size: 24px;
  font-weight: 900;
  text-shadow: 0 0 20px var(--neon-red);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.warning-content p {
  color: var(--neon-cyan);
  font-family: 'Orbitron', monospace;
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 15px;
  text-shadow: 0 0 10px var(--neon-cyan);
}

.browser-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-top: 30px;
}

.continue-btn, .chrome-btn {
  padding: 12px 24px;
  border: 2px solid var(--neon-cyan);
  border-radius: 8px;
  font-family: 'Orbitron', monospace;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  display: inline-block;
}

.continue-btn {
  background: linear-gradient(135deg, var(--neon-cyan) 0%, var(--neon-pink) 100%);
  color: var(--dark-bg);
  box-shadow: 0 0 20px var(--neon-cyan);
}

.continue-btn:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 0 30px var(--neon-cyan);
}

.chrome-btn {
  background: linear-gradient(135deg, var(--neon-red) 0%, #ff4444 100%);
  color: white;
  box-shadow: 0 0 20px var(--neon-red);
}

.chrome-btn:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 0 30px var(--neon-red);
}

@keyframes warningPulse {
  0%, 100% {
    box-shadow: 0 0 40px var(--neon-red);
  }
  50% {
    box-shadow: 0 0 60px var(--neon-red), 0 0 80px rgba(255, 107, 107, 0.3);
  }
}

/* Welcome Dialog Styles */
.welcome-dialog {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 10001;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.welcome-content {
    background: #1a1f2e;
    border: 2px solid #374151;
    border-radius: 16px;
    padding: 0;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.6);
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from { 
        opacity: 0;
        transform: translateY(30px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

.welcome-header {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #374151;
}

.welcome-header h2 {
    color: white;
    margin: 0;
    font-size: 24px;
    font-weight: 600;
}

.close-welcome-btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.close-welcome-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.welcome-body {
    padding: 25px;
    max-height: 60vh;
    overflow-y: auto;
}

.welcome-section {
    margin-bottom: 25px;
}

.welcome-section:last-child {
    margin-bottom: 0;
}

.welcome-section h3 {
    color: #e7e9ee;
    margin: 0 0 15px 0;
    font-size: 18px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.welcome-section ol,
.welcome-section ul {
    color: #d1d5db;
    margin: 0;
    padding-left: 20px;
}

.welcome-section li {
    margin-bottom: 8px;
    line-height: 1.5;
}

.controls-preview {
    background: #111826;
    border: 1px solid #374151;
    border-radius: 8px;
    padding: 15px;
}

.control-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid #2d3748;
}

.control-row:last-child {
    border-bottom: none;
}

.control-row .key {
    background: #374151;
    color: #e7e9ee;
    padding: 4px 8px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 12px;
    font-weight: 600;
    min-width: 60px;
    text-align: center;
}

.control-row .action {
    color: #d1d5db;
    font-size: 14px;
    flex: 1;
    margin-left: 15px;
}

.welcome-footer {
    background: #111826;
    padding: 20px 25px;
    border-top: 1px solid #374151;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.start-playing-btn {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.2s;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.start-playing-btn:hover {
    background: linear-gradient(135deg, #059669, #047857);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.4);
}

.dont-show-again {
    color: #9ca3af;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.dont-show-again input[type="checkbox"] {
    margin: 0;
    cursor: pointer;
}

/* Responsive design for welcome dialog */
@media (max-width: 768px) {
    .welcome-content {
        width: 95%;
        margin: 10px;
    }
    
    .welcome-header h2 {
        font-size: 20px;
    }
    
    .welcome-body {
        padding: 20px;
    }
    
    .welcome-footer {
        flex-direction: column;
        align-items: stretch;
    }
    
    .start-playing-btn {
        width: 100%;
        margin-bottom: 10px;
    }
}

.rom-gallery {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
  gap: 10px;
  width: 100%;
  max-height: calc(100vh - 200px);
  overflow-y: auto;
  padding-right: 8px;
}
.rom-card {
  background: linear-gradient(135deg, var(--dark-bg) 0%, var(--panel) 100%);
  border: 2px solid var(--neon-cyan);
  border-radius: 10px;
  padding: 8px;
  text-align: left;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 
    0 0 15px var(--neon-cyan),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}

.rom-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent, 
    var(--neon-pink), 
    var(--neon-yellow), 
    transparent
  );
  transition: left 0.6s ease;
  opacity: 0.3;
}

.rom-card:hover { 
  border-color: var(--neon-pink);
  box-shadow: 
    0 0 25px var(--neon-pink),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  transform: translateY(-3px) scale(1.02);
}

.rom-card:hover::before {
  left: 100%;
}
.rom-card .cover {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: #0d0f16;
  background-size: cover;
  background-position: center;
  border-radius: 4px;
  border: 1px solid var(--border);
}
.rom-card .label {
  margin-top: 6px;
  font-size: 10px;
  color: var(--neon-cyan);
  font-family: 'Orbitron', 'Courier New', monospace;
  font-weight: 600;
  text-shadow: 0 0 8px var(--neon-cyan);
  text-align: center;
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: relative;
  z-index: 1;
}