/* Cascade Layers for predictable specificity */
@layer reset, base, theme, components, utilities;

@layer reset {
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  html, body {
    width: 100%;
    height: 100dvh;
    overflow: hidden;
  }

  body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
}

@layer base {
  body {
    font-family: 'Space Grotesk', system-ui, -apple-system, sans-serif;
    color: var(--color-text);
    background-color: var(--color-bg);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.4s ease, color 0.4s ease;
  }

  h1, h2, h3, h4, .hud-value, .dialog-title, button {
    font-family: 'Orbitron', monospace, sans-serif;
    letter-spacing: 0.05em;
  }

  /* Custom outline for keyboard navigation */
  :focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 4px;
    border-radius: 4px;
  }

  /* Custom scrollbar formatting */
  * {
    scrollbar-width: thin;
    scrollbar-color: var(--color-primary-alpha) transparent;
  }
}

@layer theme {
  /* ==========================================
     THEME DEFINITIONS (Design Tokens)
     ========================================== */
  
  :root {
    --animation-reduced: none;
  }

  /* 1. Neon Cyber (Default) */
  .theme-neon-cyber {
    --color-bg: #060713;
    --color-text: #e2e8f0;
    --color-primary: #00f0ff;      /* Cyber Cyan */
    --color-primary-alpha: rgba(0, 240, 255, 0.2);
    --color-secondary: #ff007f;    /* Neon Pink */
    --color-secondary-alpha: rgba(255, 0, 127, 0.2);
    --color-success: #39ff14;      /* Acid Green */
    --color-success-alpha: rgba(57, 255, 20, 0.2);
    --color-alert: #ff2a2a;        /* Crimson Red */
    --color-warning: #ffb700;      /* Warning Gold */
    
    --glass-bg: rgba(10, 12, 30, 0.65);
    --glass-border: rgba(0, 240, 255, 0.25);
    --glass-border-hover: rgba(255, 0, 127, 0.5);
    --glow-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
    --glow-shadow-pink: 0 0 15px rgba(255, 0, 127, 0.4);
    
    --grid-color: rgba(0, 240, 255, 0.03);
    --vignette-radial: radial-gradient(circle, transparent 40%, rgba(2, 3, 10, 0.8) 100%);
  }

  /* 2. Retro Terminal */
  .theme-retro-terminal {
    --color-bg: #030a05;
    --color-text: #33ff33;         /* CRT Green */
    --color-primary: #33ff33;
    --color-primary-alpha: rgba(51, 255, 51, 0.2);
    --color-secondary: #ffb000;    /* Amber */
    --color-secondary-alpha: rgba(255, 176, 0, 0.2);
    --color-success: #33ff33;
    --color-success-alpha: rgba(51, 255, 51, 0.2);
    --color-alert: #ff3333;
    --color-warning: #ffb000;
    
    --glass-bg: rgba(0, 5, 2, 0.85);
    --glass-border: rgba(51, 255, 51, 0.3);
    --glass-border-hover: rgba(255, 176, 0, 0.5);
    --glow-shadow: 0 0 10px rgba(51, 255, 51, 0.5);
    --glow-shadow-pink: 0 0 10px rgba(255, 176, 0, 0.5);
    
    --grid-color: rgba(51, 255, 51, 0.05);
    --vignette-radial: radial-gradient(circle, transparent 50%, rgba(0, 0, 0, 0.9) 100%);
  }

  /* 3. Pastel Candy */
  .theme-pastel-candy {
    --color-bg: #161224;
    --color-text: #fbcfe8;         /* Soft Pink text */
    --color-primary: #f472b6;      /* Pastel Magenta */
    --color-primary-alpha: rgba(244, 114, 182, 0.2);
    --color-secondary: #38bdf8;    /* Pastel Sky Blue */
    --color-secondary-alpha: rgba(56, 189, 248, 0.2);
    --color-success: #34d399;      /* Mint */
    --color-success-alpha: rgba(52, 211, 153, 0.2);
    --color-alert: #f87171;
    --color-warning: #fbbf24;
    
    --glass-bg: rgba(26, 20, 42, 0.7);
    --glass-border: rgba(244, 114, 182, 0.3);
    --glass-border-hover: rgba(56, 189, 248, 0.5);
    --glow-shadow: 0 0 12px rgba(244, 114, 182, 0.4);
    --glow-shadow-pink: 0 0 12px rgba(56, 189, 248, 0.4);
    
    --grid-color: rgba(244, 114, 182, 0.04);
    --vignette-radial: radial-gradient(circle, transparent 50%, rgba(15, 10, 25, 0.8) 100%);
  }

  /* 4. Sunset Glow */
  .theme-sunset-gold {
    --color-bg: #14050d;
    --color-text: #ffeedd;
    --color-primary: #ff5b00;      /* Electric Orange */
    --color-primary-alpha: rgba(255, 91, 0, 0.2);
    --color-secondary: #ffd300;    /* Amber Gold */
    --color-secondary-alpha: rgba(255, 211, 0, 0.2);
    --color-success: #ff007f;
    --color-success-alpha: rgba(255, 0, 127, 0.2);
    --color-alert: #ff003c;
    --color-warning: #ffd300;
    
    --glass-bg: rgba(25, 8, 17, 0.75);
    --glass-border: rgba(255, 91, 0, 0.3);
    --glass-border-hover: rgba(255, 211, 0, 0.5);
    --glow-shadow: 0 0 15px rgba(255, 91, 0, 0.4);
    --glow-shadow-pink: 0 0 15px rgba(255, 211, 0, 0.4);
    
    --grid-color: rgba(255, 91, 0, 0.03);
    --vignette-radial: radial-gradient(circle, transparent 40%, rgba(10, 2, 6, 0.9) 100%);
  }

  /* Colors inside theme selector swatches */
  .color-cyber { background-color: #00f0ff; box-shadow: 0 0 6px #00f0ff; }
  .color-terminal { background-color: #33ff33; box-shadow: 0 0 6px #33ff33; }
  .color-candy { background-color: #f472b6; box-shadow: 0 0 6px #f472b6; }
  .color-sunset { background-color: #ff5b00; box-shadow: 0 0 6px #ff5b00; }
  .color-synthwave { background-color: #ff007f; box-shadow: 0 0 6px #ff007f; }
  .color-toxic { background-color: #39ff14; box-shadow: 0 0 6px #39ff14; }

  /* 5. Synthwave Sunset */
  .theme-synthwave-outrun {
    --color-bg: #100520;
    --color-text: #fef0ff;
    --color-primary: #ff007f;      /* Hot Neon Pink */
    --color-primary-alpha: rgba(255, 0, 127, 0.2);
    --color-secondary: #ff7300;    /* Neon Orange */
    --color-secondary-alpha: rgba(255, 115, 0, 0.2);
    --color-success: #00f0ff;      /* Cyan */
    --color-success-alpha: rgba(0, 240, 255, 0.2);
    --color-alert: #ff1744;
    --color-warning: #ffea00;
    
    --glass-bg: rgba(20, 8, 35, 0.7);
    --glass-border: rgba(255, 0, 127, 0.3);
    --glass-border-hover: rgba(255, 115, 0, 0.5);
    --glow-shadow: 0 0 15px rgba(255, 0, 127, 0.4);
    --glow-shadow-pink: 0 0 15px rgba(255, 115, 0, 0.4);
    
    --grid-color: rgba(255, 0, 127, 0.04);
    --vignette-radial: radial-gradient(circle, transparent 40%, rgba(10, 2, 22, 0.9) 100%);
  }

  /* 6. Toxic Hazard */
  .theme-toxic-hazard {
    --color-bg: #020904;
    --color-text: #d1ffd6;
    --color-primary: #39ff14;      /* Acid/Lime Green */
    --color-primary-alpha: rgba(57, 255, 20, 0.2);
    --color-secondary: #ccff00;    /* Toxic Yellow-Green */
    --color-secondary-alpha: rgba(204, 255, 0, 0.2);
    --color-success: #00e5ff;
    --color-success-alpha: rgba(0, 229, 255, 0.2);
    --color-alert: #ff3d00;
    --color-warning: #ffd600;
    
    --glass-bg: rgba(2, 18, 5, 0.75);
    --glass-border: rgba(57, 255, 20, 0.3);
    --glass-border-hover: rgba(204, 255, 0, 0.5);
    --glow-shadow: 0 0 15px rgba(57, 255, 20, 0.4);
    --glow-shadow-pink: 0 0 15px rgba(204, 255, 0, 0.4);
    
    --grid-color: rgba(57, 255, 20, 0.03);
    --vignette-radial: radial-gradient(circle, transparent 45%, rgba(0, 5, 1, 0.95) 100%);
  }
}

@layer components {
  /* ==========================================
     LAYOUT DECORATIONS & EFFECTS
     ========================================== */

  .cyber-grid-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    background-image: 
      linear-gradient(to right, var(--grid-color) 1px, transparent 1px),
      linear-gradient(to bottom, var(--grid-color) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.8;
  }

  .cyber-grid-overlay::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
      rgba(18, 16, 16, 0) 50%, 
      rgba(0, 0, 0, 0.25) 50%
    ), linear-gradient(
      90deg, 
      rgba(255, 0, 0, 0.03), 
      rgba(0, 255, 0, 0.01), 
      rgba(0, 0, 255, 0.03)
    );
    background-size: 100% 4px, 6px 100%;
  }

  .glow-vignette {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 2;
    background: var(--vignette-radial);
  }

  /* ==========================================
     CORE APPLICATION FRAMEWORK
     ========================================== */
  
  #app-container {
    display: flex;
    flex-direction: column;
    width: 90vw;
    max-width: 900px;
    height: 95dvh;
    position: relative;
    z-index: 10;
    gap: 1.5rem;
  }

  /* HUD HEADER */
  #game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
    border-radius: 8px;
    box-shadow: var(--glow-shadow);
  }

  .brand {
    display: flex;
    flex-direction: column;
  }

  .brand h1 {
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--color-primary);
    text-shadow: 0 0 10px var(--color-primary-alpha);
  }

  .sub-brand {
    font-size: 0.65rem;
    color: var(--color-secondary);
    font-weight: bold;
    letter-spacing: 0.2em;
    margin-top: 2px;
  }

  .hud-stats {
    display: flex;
    gap: 1rem;
  }

  .hud-card {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    min-width: 80px;
  }

  .hud-label {
    font-size: 0.6rem;
    color: var(--color-text);
    opacity: 0.6;
    letter-spacing: 0.1em;
  }

  .hud-value {
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--color-primary);
  }

  #hud-score {
    color: var(--color-primary);
  }

  #hud-multiplier {
    color: var(--color-warning);
  }

  #hud-level {
    color: var(--color-secondary);
  }

  #hud-highscore {
    color: var(--color-success);
  }

  /* MAIN GAMEPLAY SECTION */
  #game-arena-container {
    display: flex;
    flex: 1;
    gap: 1.5rem;
    min-height: 0; /* allows child size shrinking */
  }

  #canvas-wrapper {
    flex: 1;
    position: relative;
    aspect-ratio: 1 / 1;
    max-width: 100%;
    max-height: 100%;
    min-width: 0;
    min-height: 0;
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    box-shadow: var(--glow-shadow);
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  #game-canvas {
    max-width: 100%;
    max-height: 100%;
    aspect-ratio: 1 / 1;
    object-fit: contain;
    display: block;
  }

  /* Subtle shaking animations applied to canvas wrapper */
  .shake-anim {
    animation: screen-shake 0.15s cubic-bezier(.36,.07,.19,.97) both;
  }

  #canvas-overlay-text {
    position: absolute;
    font-family: 'Orbitron', monospace;
    font-weight: 900;
    font-size: 2.5rem;
    color: var(--color-primary);
    text-shadow: var(--glow-shadow);
    pointer-events: none;
    text-align: center;
    z-index: 12;
    animation: pulse-overlay 1.5s infinite alternate;
  }

  /* POWER-UPS PANEL */
  #powerups-panel {
    width: 250px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glow-shadow);
    border-radius: 8px;
    backdrop-filter: blur(12px);
    padding: 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  #powerups-panel h2 {
    font-size: 0.9rem;
    color: var(--color-text);
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 0.5rem;
    letter-spacing: 0.1em;
  }

  .powerup-slots {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    flex: 1;
  }

  .powerup-slot {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.6rem;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px dashed rgba(255, 255, 255, 0.08);
    opacity: 0.4;
    transition: opacity 0.3s ease, border-style 0.3s ease, background 0.3s ease;
  }

  .powerup-slot.active {
    opacity: 1;
    border-style: solid;
    background: rgba(255, 255, 255, 0.05);
  }

  /* Specific Active Powerup Borders & Shadows */
  .powerup-slot.active[data-buff="shield"] {
    border-color: var(--color-primary);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.15);
  }

  .powerup-slot.active[data-buff="warp"] {
    border-color: var(--color-secondary);
    box-shadow: 0 0 10px rgba(255, 0, 127, 0.15);
  }

  .powerup-slot.active[data-buff="multiplier"] {
    border-color: var(--color-warning);
    box-shadow: 0 0 10px rgba(255, 183, 0, 0.15);
  }

  .powerup-slot.active[data-buff="ghost"] {
    border-color: var(--color-success);
    box-shadow: 0 0 10px rgba(57, 255, 20, 0.15);
  }

  .buff-icon-wrapper {
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.05);
  }

  .buff-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
  }

  .buff-name {
    font-size: 0.65rem;
    font-weight: bold;
    letter-spacing: 0.05em;
    color: var(--color-text);
  }

  .buff-bar-container {
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
  }

  .buff-bar {
    width: 0%;
    height: 100%;
    background-color: var(--color-text);
    transition: width 0.1s linear;
  }

  #buff-shield .buff-bar { background-color: var(--color-primary); }
  #buff-warp .buff-bar { background-color: var(--color-secondary); }
  #buff-multiplier .buff-bar { background-color: var(--color-warning); }
  #buff-ghost .buff-bar { background-color: var(--color-success); }
  #buff-magnet .buff-bar { background-color: #00ffcc; }
  #buff-freeze .buff-bar { background-color: #00ccff; }

  #time-attack-card {
    align-items: center;
    background: rgba(255, 0, 127, 0.1);
    border: 1px solid var(--color-secondary);
    box-shadow: var(--glow-shadow-pink);
    padding: 0.8rem;
    margin-top: auto;
  }

  #time-attack-card .hud-value {
    color: var(--color-secondary);
    font-size: 1.5rem;
  }

  #boost-card {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    border: 1px solid var(--glass-border);
    padding: 0.8rem;
    margin-top: 0.8rem;
  }

  .boost-bar-container {
    width: 100%;
    height: 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 5px;
  }

  #boost-bar {
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    transition: width 0.05s linear;
    box-shadow: 0 0 8px var(--color-primary);
  }

  /* SYSTEM CONSOLE LOGS */
  #console-logs-card {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.8rem;
    margin-top: auto;
    border: 1px solid var(--glass-border);
    background: rgba(0, 0, 0, 0.35);
    max-height: 180px;
    box-sizing: border-box;
  }

  .console-logs-content {
    display: flex;
    flex-direction: column;
    gap: 6px;
    height: 120px;
    overflow-y: auto;
    font-family: 'Space Grotesk', monospace;
    font-size: 0.65rem;
    line-height: 1.4;
    padding-right: 4px;
    letter-spacing: 0.04em;
    scrollbar-width: thin;
    scrollbar-color: var(--color-primary-alpha) transparent;
  }

  .log-line {
    word-break: break-word;
    opacity: 0.9;
  }

  .log-line.text-system {
    color: var(--color-primary);
    text-shadow: 0 0 4px var(--color-primary-alpha);
  }

  .log-line.text-info {
    color: var(--color-text);
    opacity: 0.8;
  }

  .log-line.text-warning {
    color: var(--color-warning);
    text-shadow: 0 0 4px rgba(255, 183, 0, 0.3);
  }

  .log-line.text-danger {
    color: var(--color-alert);
    text-shadow: 0 0 4px rgba(255, 42, 42, 0.3);
  }

  .log-line.text-success {
    color: var(--color-success);
    text-shadow: 0 0 4px var(--color-success-alpha);
  }

  /* MOBILE CONTROLS OVERLAY */
  #mobile-controls {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
  }

  .ctrl-btn {
    width: 55px;
    height: 55px;
    font-size: 1.2rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    touch-action: none;
    transition: background-color 0.2s, transform 0.1s;
    user-select: none;
  }

  .ctrl-btn:active {
    background: var(--color-primary);
    color: var(--color-bg);
    transform: scale(0.95);
    box-shadow: var(--glow-shadow);
  }

  .horizontal-ctrls {
    display: flex;
    gap: 2rem;
    align-items: center;
  }

  #btn-pause {
    border-radius: 8px;
    font-size: 0.9rem;
    border-color: var(--color-secondary);
    color: var(--color-secondary);
  }

  #btn-pause:active {
    background: var(--color-secondary);
    color: var(--color-bg);
    box-shadow: var(--glow-shadow-pink);
  }

  .boost-mobile-btn {
    width: 140px !important;
    height: 40px !important;
    border-radius: 20px !important;
    font-family: 'Orbitron', monospace;
    font-size: 0.8rem !important;
    font-weight: 900;
    letter-spacing: 0.05em;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary)) !important;
    border: 1px solid var(--glass-border) !important;
    color: var(--color-bg) !important;
    box-shadow: 0 0 10px var(--color-primary-alpha);
    margin-top: 8px;
    text-shadow: none !important;
  }
  
  .boost-mobile-btn:active {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-primary)) !important;
    box-shadow: 0 0 18px var(--color-secondary) !important;
    transform: scale(0.95);
  }

  /* FOOTER */
  #game-footer {
    display: flex;
    justify-content: center;
    padding: 0.5rem;
    font-size: 0.65rem;
    color: var(--color-text);
    opacity: 0.5;
    letter-spacing: 0.1em;
    text-align: center;
  }

  kbd {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    padding: 2px 5px;
    font-size: 0.6rem;
    color: var(--color-primary);
  }

  /* ==========================================
     NATIVE OVERLAYS (MODALS)
     ========================================== */

  .glass-dialog {
    border: 2px solid var(--glass-border);
    background: var(--glass-bg);
    border-radius: 12px;
    margin: auto;
    max-width: 90vw;
    width: 720px;
    box-shadow: var(--glow-shadow), 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    color: var(--color-text);
    padding: 2rem;
    
    /* Native entry/exit transitions */
    opacity: 0;
    transform: scale(0.92);
    transition: 
      opacity 0.3s ease, 
      transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
      display 0.3s ease allow-discrete;
  }

  .glass-dialog[open] {
    opacity: 1;
    transform: scale(1);
  }

  /* Transition rule starting values */
  @starting-style {
    .glass-dialog[open] {
      opacity: 0;
      transform: scale(0.92);
    }
  }

  /* Modal Backdrop blurring */
  .glass-dialog::backdrop {
    background-color: rgba(2, 3, 10, 0);
    backdrop-filter: blur(0px);
    transition: 
      background-color 0.3s ease, 
      backdrop-filter 0.3s ease,
      display 0.3s ease allow-discrete;
  }

  .glass-dialog[open]::backdrop {
    background-color: rgba(2, 3, 10, 0.75);
    backdrop-filter: blur(8px);
  }

  @starting-style {
    .glass-dialog[open]::backdrop {
      background-color: rgba(2, 3, 10, 0);
      backdrop-filter: blur(0px);
    }
  }

  /* DIALOG CONTENT STYLING */
  .dialog-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }

  .dialog-title {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--color-primary);
    text-shadow: var(--glow-shadow);
    text-align: center;
    border-bottom: 2px solid var(--glass-border);
    padding-bottom: 0.8rem;
  }

  .dialog-title.color-alert {
    color: var(--color-alert);
    text-shadow: 0 0 15px rgba(255, 42, 42, 0.5);
    border-bottom-color: rgba(255, 42, 42, 0.3);
  }

  /* Main Menu layout split */
  .menu-sections {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }

  .menu-sections h3 {
    font-size: 0.75rem;
    margin-bottom: 0.8rem;
    color: var(--color-text);
    opacity: 0.6;
    letter-spacing: 0.1em;
  }

  .menu-sections section {
    display: flex;
    flex-direction: column;
  }

  /* Mode selection cards */
  .modes-grid {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
  }

  .mode-btn {
    text-align: left;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    padding: 0.8rem 1rem;
    color: var(--color-text);
    cursor: pointer;
    transition: all 0.2s ease;
  }

  .mode-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-primary-alpha);
  }

  .mode-btn.active {
    background: rgba(0, 240, 255, 0.08);
    border-color: var(--color-primary);
    box-shadow: 0 0 8px rgba(0, 240, 255, 0.2);
  }

  .mode-title {
    display: block;
    font-size: 0.85rem;
    font-weight: bold;
    color: var(--color-primary);
    margin-bottom: 3px;
  }

  .mode-desc {
    display: block;
    font-size: 0.65rem;
    opacity: 0.6;
    line-height: 1.3;
  }

  .mode-btn.active .mode-title {
    color: var(--color-primary);
  }

  .mode-btn.active[id="mode-arcade"] .mode-title {
    color: var(--color-secondary);
  }
  .mode-btn.active[id="mode-arcade"] {
    background: rgba(255, 0, 127, 0.08);
    border-color: var(--color-secondary);
    box-shadow: 0 0 8px rgba(255, 0, 127, 0.2);
  }

  .mode-btn.active[id="mode-time"] .mode-title {
    color: var(--color-warning);
  }
  .mode-btn.active[id="mode-time"] {
    background: rgba(255, 183, 0, 0.08);
    border-color: var(--color-warning);
    box-shadow: 0 0 8px rgba(255, 183, 0, 0.2);
  }

  /* Difficulty toggle group */
  .difficulty-toggle-group {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    padding: 2px;
    margin-bottom: 1.2rem;
  }

  .diff-btn, .tab-btn {
    background: transparent;
    border: none;
    color: var(--color-text);
    font-size: 0.6rem;
    padding: 0.5rem 0;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s ease;
  }

  .diff-btn:hover, .tab-btn:hover {
    background: rgba(255, 255, 255, 0.05);
  }

  .diff-btn.active, .tab-btn.active {
    background: var(--color-primary);
    color: var(--color-bg);
    font-weight: bold;
  }

  /* Theme select grid */
  .theme-select-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .settings-form .theme-select-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .menu-theme-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  @media (max-width: 480px) {
    .settings-form .theme-select-grid {
      grid-template-columns: 1fr;
    }
  }

  .theme-btn {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    padding: 0.5rem 0.8rem;
    color: var(--color-text);
    cursor: pointer;
    font-size: 0.75rem;
    text-align: left;
    transition: all 0.2s ease;
  }

  .theme-btn:hover {
    background: rgba(255, 255, 255, 0.05);
  }

  .theme-btn.active {
    border-color: var(--color-secondary);
    background: rgba(255, 0, 127, 0.05);
  }

  .theme-swatch {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    display: inline-block;
  }

  /* Dialog Actions Footer */
  .dialog-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 0.5rem;
    flex-wrap: wrap;
  }

  .action-btn {
    padding: 0.8rem 1.4rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .action-btn.primary {
    background: var(--color-primary);
    color: var(--color-bg);
    border: none;
    box-shadow: var(--glow-shadow);
  }

  .action-btn.primary:hover {
    filter: brightness(1.15);
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.6);
  }

  .action-btn.secondary {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-border);
    color: var(--color-primary);
  }

  .action-btn.secondary:hover {
    background: rgba(0, 240, 255, 0.1);
    transform: translateY(-2px);
  }

  .action-btn.alert {
    background: rgba(255, 42, 42, 0.1);
    border: 1px solid var(--color-alert);
    color: var(--color-alert);
  }

  .action-btn.alert:hover {
    background: var(--color-alert);
    color: var(--color-bg);
    box-shadow: 0 0 15px rgba(255, 42, 42, 0.4);
    transform: translateY(-2px);
  }

  /* STATS SUMMARY GRID (GAME OVER) */
  .stats-summary {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.8rem;
  }

  .summary-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 6px;
    padding: 0.8rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
  }

  .summary-label {
    font-size: 0.55rem;
    color: var(--color-text);
    opacity: 0.5;
    text-align: center;
    letter-spacing: 0.05em;
  }

  .summary-value {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--color-primary);
  }

  .new-highscore-banner {
    background: linear-gradient(90deg, transparent, rgba(57, 255, 20, 0.15), transparent);
    color: var(--color-success);
    border-top: 1px solid var(--color-success);
    border-bottom: 1px solid var(--color-success);
    text-align: center;
    padding: 0.6rem;
    font-family: 'Orbitron', monospace;
    font-weight: bold;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    text-shadow: 0 0 10px rgba(57, 255, 20, 0.3);
    animation: flash-banner 1s ease-in-out infinite alternate;
  }

  #leaderboard-entry-card {
    grid-column: 1 / -1;
    width: 100%;
    margin: 0.5rem 0;
    padding: 1rem;
    align-items: center;
    gap: 0.8rem;
  }

  .leaderboard-entry-label {
    font-size: 0.7rem;
    color: var(--color-warning);
  }

  .leaderboard-entry-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
    justify-content: center;
    width: 100%;
  }

  .player-tag-label {
    font-family: 'Orbitron', monospace;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
  }

  .save-tag-button {
    padding: 0.4rem 1.2rem;
    font-size: 0.75rem;
  }

  /* SETTINGS FORM STYLING */
  .settings-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }

  .settings-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 8px;
    padding: 1.2rem;
  }

  .setting-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    font-weight: bold;
    letter-spacing: 0.05em;
    cursor: pointer;
  }

  .setting-row select, .setting-row-block select {
    background: var(--color-bg);
    border: 1px solid var(--glass-border);
    color: var(--color-text);
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.8rem;
    cursor: pointer;
    min-width: 150px;
    transition: border-color 0.2s;
  }

  .setting-row select:focus, .setting-row-block select:focus {
    border-color: var(--color-primary);
  }

  .setting-row input[type="checkbox"] {
    appearance: none;
    width: 44px;
    height: 22px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 11px;
    position: relative;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
  }

  .setting-row input[type="checkbox"]::before {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-text);
    top: 2px;
    left: 2px;
    transition: transform 0.25s cubic-bezier(0.3, 1.5, 0.7, 1);
  }

  .setting-row input[type="checkbox"]:checked {
    background-color: var(--color-success);
    border-color: var(--color-success);
  }

  .setting-row input[type="checkbox"]:checked::before {
    transform: translateX(22px);
    background-color: var(--color-bg);
  }

  .setting-row-block {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .setting-row-block label {
    font-size: 0.8rem;
    font-weight: bold;
    letter-spacing: 0.05em;
  }

  .setting-row-block input[type="range"] {
    appearance: none;
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    outline: none;
  }

  .setting-row-block input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    box-shadow: var(--glow-shadow);
    transition: transform 0.1s;
  }

  .setting-row-block input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
  }

  /* STATISTICS LAYOUT */
  .stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .stats-tabs-group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    justify-content: center;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 6px;
    padding: 2px;
  }

  .stats-tabs-group .tab-btn {
    flex: 1;
    font-size: 0.75rem;
    padding: 0.4rem 0;
  }

  .stat-entry {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    padding: 0.8rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .stat-label {
    font-size: 0.6rem;
    opacity: 0.6;
    letter-spacing: 0.05em;
  }

  .stat-val {
    font-size: 0.95rem;
    font-weight: bold;
    color: var(--color-primary);
    font-family: 'Orbitron', monospace;
  }

  /* Level Selector grid for Arcade mode */
  .level-select-grid {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: 0.4rem;
    margin: 0.5rem 0;
  }

  .level-node {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    color: var(--color-text);
    border-radius: 4px;
    padding: 0.4rem 0.2rem;
    font-family: 'Orbitron', monospace;
    font-size: 0.8rem;
    font-weight: bold;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
  }

  .level-node:hover {
    background: var(--color-primary-alpha);
    border-color: var(--color-primary);
    box-shadow: var(--glow-shadow);
    transform: translateY(-2px);
  }

  .level-node.active {
    background: var(--color-primary);
    color: var(--color-bg);
    border-color: var(--color-primary);
    box-shadow: var(--glow-shadow);
  }

  .selected-level-desc {
    font-size: 0.7rem;
    opacity: 0.75;
    font-style: italic;
    min-height: 2.6em;
    margin-top: 0.4rem;
    line-height: 1.3;
  }

  .arcade-level-heading {
    margin-top: 1.2rem;
    margin-bottom: 0.6rem;
  }

  /* Leaderboard data-tag input */
  #player-tag {
    width: 75px;
    background: rgba(0, 0, 0, 0.45);
    border: 1px solid var(--glass-border);
    color: var(--color-primary);
    font-family: 'Orbitron', monospace;
    font-size: 1.15rem;
    text-align: center;
    text-transform: uppercase;
    border-radius: 4px;
    padding: 0.2rem 0.4rem;
    outline: none;
    caret-color: var(--color-primary);
    box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.5);
    transition: all 0.25s ease;
  }

  #player-tag:focus {
    border-color: var(--color-primary) !important;
    box-shadow: 0 0 10px var(--color-primary-alpha) !important;
  }

  /* Achievements badging and listing */
  .achievement-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 0.8rem;
    transition: all 0.25s ease;
  }

  .achievement-item:hover {
    background: rgba(255, 255, 255, 0.04);
  }

  .achievement-item.unlocked {
    border-color: var(--color-success);
    box-shadow: 0 0 10px rgba(57, 255, 20, 0.1);
  }

  .achievement-badge {
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(0, 0, 0, 0.4);
    border: 2px solid var(--glass-border);
    border-radius: 50%;
    filter: grayscale(100%);
    opacity: 0.4;
    transition: all 0.3s ease;
  }

  .achievement-item.unlocked .achievement-badge {
    filter: grayscale(0%);
    opacity: 1;
    border-color: var(--color-success);
    box-shadow: 0 0 8px var(--color-success);
  }

  .achievement-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
  }

  .achievement-name {
    font-family: 'Orbitron', monospace;
    font-size: 0.85rem;
    font-weight: bold;
    color: var(--color-text);
  }

  .achievement-item.unlocked .achievement-name {
    color: var(--color-success);
  }

  .achievement-desc {
    font-size: 0.7rem;
    color: var(--color-text);
    opacity: 0.65;
  }

  #leaderboard-tab-content {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
  }

  .leaderboard-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.65rem;
    opacity: 0.6;
    border-bottom: 1px solid var(--glass-border);
    padding: 0 0.8rem 0.4rem;
    font-family: 'Orbitron', monospace;
  }

  #leaderboard-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-height: 250px;
    overflow-y: auto;
  }

  #achievements-tab-content {
    max-height: 250px;
    overflow-y: auto;
    padding-right: 0.5rem;
  }

  #achievements-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
  }

  #achievement-toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
  }

  .restart-note {
    font-size: 0.75em;
    color: var(--color-alert);
    margin-left: 8px;
  }

  .achievement-status {
    font-family: 'Orbitron', monospace;
    font-size: 0.65rem;
    font-weight: bold;
    color: var(--color-alert);
    text-transform: uppercase;
  }

  .achievement-item.unlocked .achievement-status {
    color: var(--color-success);
  }

  /* Achievement toast notification */
  .achievement-toast {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    background: rgba(10, 12, 30, 0.95);
    border: 1px solid var(--color-success);
    border-radius: 8px;
    padding: 0.8rem 1.2rem;
    color: var(--color-text);
    box-shadow: 0 0 15px rgba(57, 255, 20, 0.4);
    min-width: 280px;
    backdrop-filter: blur(8px);
    animation: toast-slide-in 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards,
               toast-fade-out 0.4s ease 3.6s forwards;
  }

  .toast-badge {
    font-size: 1.8rem;
  }

  .toast-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
  }

  .toast-title {
    font-family: 'Orbitron', monospace;
    font-size: 0.65rem;
    color: var(--color-success);
    font-weight: bold;
    letter-spacing: 0.1em;
  }

  .toast-name {
    font-family: 'Orbitron', monospace;
    font-size: 0.85rem;
    font-weight: bold;
  }

  @keyframes toast-slide-in {
    from {
      transform: translateX(120%);
      opacity: 0;
    }
    to {
      transform: translateX(0);
      opacity: 1;
    }
  }

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

  /* Leaderboard list entries */
  .leaderboard-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    padding: 0.5rem 0.8rem;
    font-family: 'Orbitron', monospace;
    font-size: 0.8rem;
    transition: all 0.2s ease;
  }

  .leaderboard-row:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--color-primary);
  }

  .leaderboard-row.rank-1 {
    border-color: var(--color-warning);
    box-shadow: 0 0 8px rgba(255, 183, 0, 0.15);
  }
  
  .leaderboard-row.rank-1 .rank-pilot {
    color: var(--color-warning);
  }

  .leaderboard-row.rank-2 {
    border-color: #c0c0c0; /* Silver */
  }

  .leaderboard-row.rank-3 {
    border-color: #cd7f32; /* Bronze */
  }

  .rank-pilot {
    display: flex;
    gap: 0.6rem;
    font-weight: bold;
    align-items: center;
  }

  .rank-num {
    opacity: 0.5;
  }

  .pilot-tag {
    text-transform: uppercase;
  }

  .score-val {
    color: var(--color-primary);
    font-weight: bold;
    text-shadow: var(--glow-shadow);
  }

  .mode-val {
    font-size: 0.65rem;
    opacity: 0.6;
    text-transform: uppercase;
    font-family: 'Space Grotesk', sans-serif;
  }
}

@layer utilities {
  /* ==========================================
     HELPER UTILITY CLASSES
     ========================================== */
  
  .hidden {
    display: none !important;
  }

  .hidden-on-desktop {
    display: none;
  }

  /* Glitchy Text Effect for Headlines */
  .glitch-text {
    position: relative;
  }

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

  .glitch-text::before {
    left: 2px;
    text-shadow: -1px 0 var(--color-secondary);
    clip: rect(44px, 450px, 56px, 0);
    animation: text-glitch 5s infinite linear alternate-reverse;
  }

  .glitch-text::after {
    left: -2px;
    text-shadow: -1px 0 var(--color-primary);
    clip: rect(85px, 450px, 140px, 0);
    animation: text-glitch 2.5s infinite linear alternate-reverse;
  }

  /* ==========================================
     ANIMATION KEYFRAMES
     ========================================== */
  
  @keyframes text-glitch {
    0% { clip: rect(31px, 9999px, 94px, 0); }
    10% { clip: rect(112px, 9999px, 76px, 0); }
    20% { clip: rect(85px, 9999px, 5px, 0); }
    30% { clip: rect(27px, 9999px, 115px, 0); }
    40% { clip: rect(73px, 9999px, 29px, 0); }
    50% { clip: rect(119px, 9999px, 83px, 0); }
    60% { clip: rect(19px, 9999px, 137px, 0); }
    70% { clip: rect(82px, 9999px, 44px, 0); }
    80% { clip: rect(138px, 9999px, 91px, 0); }
    90% { clip: rect(6px, 9999px, 55px, 0); }
    100% { clip: rect(52px, 9999px, 120px, 0); }
  }

  @keyframes pulse-overlay {
    from { opacity: 0.6; transform: scale(1.0); }
    to { opacity: 1.0; transform: scale(1.05); }
  }

  @keyframes flash-banner {
    0%, 100% { filter: brightness(1); }
    50% { filter: brightness(1.3); }
  }

  @keyframes screen-shake {
    10%, 90% { transform: translate3d(-2px, 0, 0); }
    20%, 80% { transform: translate3d(3px, 0, 0); }
    30%, 50%, 70% { transform: translate3d(-5px, 0, 0); }
    40%, 60% { transform: translate3d(5px, 0, 0); }
  }
}

/* ==========================================
   RESPONSIVE LAYOUT & TOUCH CONFIG
   ========================================== */

@media (pointer: coarse) {
  .hidden-on-desktop {
    display: flex !important;
  }
  
  #game-footer {
    display: none;
  }
}

@media (max-width: 768px) {
  #app-container {
    height: 100dvh;
    min-height: 0;
    padding: 0.5rem;
    padding-bottom: calc(0.5rem + env(safe-area-inset-bottom, 0px));
    gap: 0.8rem;
    width: 98vw;
  }

  #game-header {
    padding: 0.6rem 1rem;
  }

  .brand h1 {
    font-size: 1.2rem;
  }

  .hud-card {
    min-width: 60px;
    padding: 0.2rem 0.5rem;
  }

  .hud-value {
    font-size: 0.85rem;
  }

  #game-arena-container {
    flex-direction: column;
    gap: 0.8rem;
    min-height: 0;
  }

  #canvas-wrapper {
    flex: 1 1 auto;
    min-height: 0;
    min-width: 0;
    width: 100%;
    max-width: 480px;
    max-height: 42dvh;
    margin: 0 auto;
    aspect-ratio: 1 / 1;
  }

  #powerups-panel {
    width: 100%;
    flex-direction: row;
    align-items: center;
    padding: 0.6rem;
    gap: 0.6rem;
  }

  #powerups-panel h2 {
    display: none; /* hide label on narrow mobile */
  }

  #console-logs-card {
    display: none; /* hide system console to save vertical space on mobile */
  }

  .powerup-slots {
    flex-direction: row;
    justify-content: space-around;
    width: 100%;
    gap: 0.4rem;
  }

  .powerup-slot {
    padding: 0.3rem;
    flex: 1;
    gap: 4px;
  }

  .buff-icon-wrapper {
    width: 24px;
    height: 24px;
    font-size: 1rem;
  }

  .buff-name {
    display: none; /* hide label text to fit layout */
  }

  .buff-info {
    justify-content: center;
  }

  #boost-card {
    margin-top: 0;
    padding: 0.3rem 0.5rem;
    flex: 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 2px;
    border-radius: 6px;
  }

  #boost-card .hud-label {
    font-size: 0.55rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    letter-spacing: 0.05em;
  }

  #boost-card .boost-bar-container {
    height: 6px;
    margin-top: 2px;
  }

  #time-attack-card {
    margin-top: 0;
    padding: 0.3rem;
    min-width: 90px;
  }

  /* Compact Virtual Mobile Controls */
  #mobile-controls {
    gap: 0.35rem;
    padding: 0.35rem;
    margin-top: auto;
  }

  .ctrl-btn {
    width: 44px;
    height: 44px;
    font-size: 1rem;
  }

  .horizontal-ctrls {
    gap: 1.2rem;
  }

  #btn-pause {
    border-radius: 8px;
    font-size: 0.8rem;
  }

  .boost-mobile-btn {
    width: 120px !important;
    height: 36px !important;
    font-size: 0.75rem !important;
    margin-top: 4px;
    border-radius: 18px !important;
  }

  /* Dialog layout on mobile */
  .menu-sections {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .glass-dialog {
    padding: 1.2rem;
    width: 95vw;
  }

  .dialog-title {
    font-size: 1.5rem;
  }
}

/* Accessibility: Support Windows High Contrast / System Forced Colors */
@media (forced-colors: active) {
  .glass-dialog, #game-header, #powerups-panel, #canvas-wrapper, .hud-card {
    border: 2px solid CanvasText;
    background: Canvas;
  }

  .action-btn.primary {
    border: 2px solid Highlight;
    background-color: Highlight;
    color: HighlightText;
  }

  .action-btn.secondary {
    border: 2px solid CanvasText;
    background-color: Canvas;
    color: CanvasText;
  }
  
  .ctrl-btn {
    border: 2px solid CanvasText;
    background-color: Canvas;
  }
}

/* ==========================================
   VERSION 3.0 EFFECTS: CRT & FEVER MODE
   ========================================== */

.crt-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9; /* Above arena but behind dialogs (which have z-index 100+ usually) */
  background: linear-gradient(
    rgba(18, 16, 16, 0) 50%, 
    rgba(0, 0, 0, 0.16) 50%
  );
  background-size: 100% 3px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

body.crt-active .crt-overlay {
  opacity: 1;
}

body.crt-active .crt-overlay::after {
  content: " ";
  display: block;
  position: fixed;
  inset: 0;
  background: radial-gradient(circle, rgba(18, 16, 16, 0) 60%, rgba(0, 0, 0, 0.35) 100%),
              linear-gradient(90deg, rgba(255, 0, 0, 0.04), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.04));
  background-size: 100% 100%, 6px 100%;
}

@keyframes crt-flicker {
  0% { opacity: 0.995; }
  50% { opacity: 0.97; }
  100% { opacity: 0.995; }
}

body.crt-active #game-canvas {
  animation: crt-flicker 0.15s infinite;
}

/* Fever Mode */
body.fever-active {
  animation: fever-bg-pulse 2s infinite ease-in-out;
}

body.fever-active .hud-card {
  border-color: var(--color-secondary) !important;
  box-shadow: 0 0 15px var(--color-secondary-alpha) !important;
  animation: fever-card-glow 1s infinite alternate;
}

@keyframes fever-bg-pulse {
  0% { background-color: #0b0213; }
  50% { background-color: #020216; }
  100% { background-color: #0b0213; }
}

@keyframes fever-card-glow {
  0% { box-shadow: 0 0 5px var(--color-secondary-alpha); }
  100% { box-shadow: 0 0 20px var(--color-secondary); }
}

/* Background & Visualizer Premium Effects */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: transparent;
}

.brand-sub-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 2px;
}

#visualizer-canvas {
  display: block;
  opacity: 0.8;
}

/* Firewall Decryption active state styling */
body.hacked-active {
  animation: hacked-screen-flash 0.3s infinite alternate ease-in-out;
}

body.hacked-active #canvas-wrapper {
  box-shadow: 0 0 35px var(--color-warning) !important;
  border-color: var(--color-warning) !important;
}

body.hacked-active #canvas-wrapper::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 8;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent 0%, rgba(255, 183, 0, 0.18) 48%, transparent 100%),
    repeating-linear-gradient(0deg, transparent 0 18px, rgba(255, 183, 0, 0.12) 19px 20px);
  mix-blend-mode: screen;
  opacity: 0.55;
  transform: translateX(-100%);
  animation: hacked-transfer-scan 0.75s linear infinite;
}

body.hacked-active #canvas-overlay-text {
  color: var(--color-warning);
  text-shadow: 0 0 12px var(--color-warning), 0 0 28px rgba(255, 183, 0, 0.45);
  letter-spacing: 0.08em;
}

body.hacked-active .cyber-grid-overlay {
  background-image: 
    linear-gradient(to right, rgba(255, 183, 0, 0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 183, 0, 0.08) 1px, transparent 1px) !important;
  animation: hacked-grid-pulse 0.4s infinite alternate ease-in-out;
}

@keyframes hacked-screen-flash {
  0% { background-color: #0b0702; }
  100% { background-color: #1a1000; }
}

@keyframes hacked-grid-pulse {
  0% { opacity: 0.6; }
  100% { opacity: 0.95; }
}

@keyframes hacked-transfer-scan {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}