@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap');

:root {
  /* Retro 8-Bit Color Palette */
  --ninox-blue: #4970FF;
  --ninox-blue-light: #7593FF;
  --retro-black: #000000;
  --retro-white: #FFFFFF;
  --retro-sky: #5C94FC;        /* Classic NES Sky Blue */
  --retro-yellow: #FCD8A4;     /* Classic NES Sand/Light Yellow */
  --retro-gold: #FFE600;       /* Gold badge yellow */
  --retro-gray-bg: #F5F6F8;
  --retro-dark-bg: #18181C;
  --retro-red: #FF4E4E;
  
  /* Layout Sizing */
  --card-width: min(90dvw, 400px);
}

/* Reset and Core Layout */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

body, html {
  width: 100%;
  height: 100dvh;
  overflow: hidden;
  background-color: var(--retro-sky);
  font-family: 'Press Start 2P', monospace, sans-serif;
  color: var(--retro-black);
  line-height: 1.4;
}

/* Game Canvas Container with retro pixel scaling */
#game-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  image-rendering: -moz-crisp-edges;
}

/* UI Overlay Container */
#ui-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

/* Screen State Management */
.screen {
  position: absolute;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s ease, visibility 0.15s ease;
  padding: 1.5rem;
}

.screen.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* Retro Panel Style: Flat white, thin black borders, light offset shadow */
.glass-card {
  width: var(--card-width);
  background: var(--retro-white);
  border: 2px solid var(--retro-black);
  border-radius: 0px; /* Retro sharp corners */
  padding: 1.8rem 1.4rem;
  box-shadow: 4px 4px 0px var(--retro-black);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  animation: cardEntrance 0.25s steps(3) forwards;
}

@keyframes cardEntrance {
  from {
    transform: translateY(10px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Brand Branding Elements */
.brand-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 1.0rem;
}

/* Concentric square design for 8-bit Ninox Logo */
.logo-icon-placeholder {
  width: 52px;
  height: 52px;
  background-color: var(--ninox-blue);
  border: 2px solid var(--retro-black);
  border-top-right-radius: 50%;
  border-bottom-left-radius: 50%;
  border-top-left-radius: 0;
  border-bottom-right-radius: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 0.8rem;
  box-shadow: 2px 2px 0px var(--retro-black);
  position: relative;
  animation: logoFloat 2.4s steps(4) infinite;
}

.logo-icon-placeholder::before {
  content: '';
  width: 30px;
  height: 30px;
  background-color: var(--retro-white);
  border: 2px solid var(--retro-black);
  border-radius: 50%;
  position: absolute;
}

.logo-icon-placeholder::after {
  content: '';
  width: 12px;
  height: 12px;
  background-color: var(--ninox-blue);
  border: 2px solid var(--retro-black);
  border-radius: 50%;
  position: absolute;
}

@keyframes logoFloat {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

h1 {
  font-size: 1.1rem;
  font-weight: normal;
  color: var(--retro-black);
  margin-bottom: 0.4rem;
  letter-spacing: -0.05em;
  text-transform: uppercase;
}

.subtitle {
  font-size: 0.5rem;
  color: #555555;
  font-weight: normal;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Info Box / Instruct Panel */
.info-box {
  margin: 0.8rem 0 1.0rem 0;
  padding: 0.7rem;
  background: var(--retro-gray-bg);
  border: 2px solid var(--retro-black);
  width: 100%;
}

.instructions-text {
  font-size: 0.45rem;
  color: var(--retro-black);
  line-height: 1.6;
  text-align: left;
}

.controls-badge {
  display: inline-block;
  background: #EAEAEA;
  border: 1px solid var(--retro-black);
  color: var(--retro-black);
  padding: 0.1rem 0.2rem;
  font-weight: normal;
  font-size: 0.42rem;
  margin: 0 0.1rem;
}

/* High Score Badge */
.highscore-badge {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--retro-gold);
  border: 2px solid var(--retro-black);
  padding: 0.4rem 0.7rem;
  font-size: 0.45rem;
  color: var(--retro-black);
  margin-bottom: 0.8rem;
  box-shadow: 2px 2px 0px var(--retro-black);
}

.highscore-value {
  font-weight: normal;
}

/* Mechanical 3D Retro Button */
.btn {
  width: 100%;
  padding: 0.8rem 1.2rem;
  font-size: 0.65rem;
  font-family: inherit;
  color: var(--retro-white);
  background: var(--ninox-blue);
  border: 2px solid var(--retro-black);
  cursor: pointer;
  box-shadow: 0 4px 0px var(--retro-black);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  position: relative;
  transform: translateY(0px);
}

.btn svg {
  fill: currentColor;
}

/* Hover pops up slightly */
.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 5px 0px var(--retro-black);
}

/* Click presses the button down mechanically, reducing bottom shadow */
.btn:active {
  transform: translateY(4px);
  box-shadow: 0 0px 0px var(--retro-black);
}

/* Game HUD Layout (Overlay during play) */
#screen-hud {
  justify-content: space-between;
  align-items: flex-start;
  pointer-events: none;
  flex-direction: row;
  height: auto;
  top: 0;
  left: 0;
  padding: 1.0rem 1.5rem;
}

/* Container for grouping Score and Records side-by-side */
.hud-left {
  display: flex;
  gap: 1.4rem;
  align-items: flex-start;
}

.hud-panel {
  display: flex;
  flex-direction: column;
  pointer-events: auto;
}

/* HUD Score Style (Classic outlined text) */
.score-container {
  align-items: flex-start;
}

.score-label {
  font-size: 0.4rem;
  text-transform: uppercase;
  color: var(--retro-white);
  margin-bottom: 0.3rem;
  text-shadow: 
    -1.5px -1.5px 0 var(--retro-black),  
     1.5px -1.5px 0 var(--retro-black),
    -1.5px  1.5px 0 var(--retro-black),
     1.5px  1.5px 0 var(--retro-black);
  display: flex;
  align-items: center;
}

.hud-icon {
  font-size: 0.5rem;
  margin-right: 0.2rem;
  display: inline-block;
}

.score-digits {
  font-size: 1.5rem;
  font-weight: normal;
  color: var(--retro-white);
  line-height: 1;
  text-shadow: 
    -2px -2px 0 var(--retro-black),  
     2px -2px 0 var(--retro-black),
    -2px  2px 0 var(--retro-black),
     2px  2px 0 var(--retro-black);
  transition: transform 0.05s ease;
}

.score-digits.pop {
  transform: scale(1.15);
}

/* HUD Difficulty Style */
.difficulty-badge {
  background: var(--retro-white);
  border: 2px solid var(--retro-black);
  padding: 0.35rem 0.5rem;
  align-items: flex-end;
  box-shadow: 2px 2px 0px var(--retro-black);
}

.difficulty-label {
  font-size: 0.35rem;
  text-transform: uppercase;
  color: #777777;
  margin-bottom: 0.15rem;
}

.difficulty-val {
  font-size: 0.55rem;
  color: var(--retro-black);
}

/* Game Over Screen specifics */
.gameover-title {
  font-size: 1.1rem;
  font-weight: normal;
  color: var(--retro-red);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

/* 2x2 Stats Grid to accommodate Score and Records */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  width: 100%;
  margin-bottom: 1.0rem;
}

.stat-item {
  background: var(--retro-gray-bg);
  border: 2px solid var(--retro-black);
  padding: 0.5rem 0.3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.stat-label {
  font-size: 0.36rem;
  color: #555555;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-val {
  font-size: 0.85rem;
  font-weight: normal;
  color: var(--retro-black);
}

/* High Score highlight in stats */
.stat-item.best {
  background: var(--retro-gold);
}

/* Retro alert banner */
.new-record-alert {
  background: var(--retro-gold);
  border: 2px dashed var(--retro-black);
  color: var(--retro-black);
  font-size: 0.42rem;
  padding: 0.4rem 0.6rem;
  margin-bottom: 0.8rem;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}

/* solid RED screen flash on NES damage */
#screen-flash {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 5;
  background-color: var(--retro-red);
  opacity: 0;
  pointer-events: none;
}

.flash-active {
  animation: cameraFlash 0.15s steps(2) forwards;
}

@keyframes cameraFlash {
  0% {
    opacity: 0.9;
  }
  50% {
    opacity: 0.45;
  }
  100% {
    opacity: 0;
  }
}

/* Floating ready prompt */
.ready-instruction {
  position: absolute;
  bottom: 16%;
  font-size: 0.55rem;
  color: var(--retro-white);
  text-shadow: 
    -1.5px -1.5px 0 var(--retro-black),  
     1.5px -1.5px 0 var(--retro-black),
    -1.5px  1.5px 0 var(--retro-black),
     1.5px  1.5px 0 var(--retro-black);
  animation: breathing 1s steps(2) infinite;
  text-align: center;
  pointer-events: none;
}

@keyframes breathing {
  0%, 100% {
    transform: scale(0.96);
  }
  50% {
    transform: scale(1.04);
  }
}

/* Responsive adjustments */
@media (max-height: 600px) {
  .glass-card {
    padding: 1.0rem 1.0rem;
  }
  
  .logo-icon-placeholder {
    width: 44px;
    height: 44px;
    margin-bottom: 0.5rem;
  }
  
  h1 {
    font-size: 0.95rem;
  }
  
  .brand-wrapper {
    margin-bottom: 0.6rem;
  }
  
  .info-box {
    margin: 0.6rem 0 0.8rem 0;
    padding: 0.5rem;
  }
}

/* Persistent Settings Gear Button */
.gear-btn {
  position: absolute;
  top: 1.0rem;
  right: 1.0rem;
  width: 44px;
  height: 44px;
  font-size: 1.2rem;
  background: var(--retro-white);
  border: 2px solid var(--retro-black);
  box-shadow: 2px 2px 0px var(--retro-black);
  cursor: pointer;
  z-index: 100;
  display: flex;
  justify-content: center;
  align-items: center;
  pointer-events: auto;
  transition: transform 0.05s ease, box-shadow 0.05s ease;
}

.gear-btn:hover {
  transform: translateY(-1px);
  box-shadow: 3px 3px 0px var(--retro-black);
}

.gear-btn:active {
  transform: translateY(2px);
  box-shadow: 0px 0px 0px var(--retro-black);
}

/* Modal Overlay for Settings */
.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(92, 148, 252, 0.6); /* Semi-transparent NES sky blue */
  backdrop-filter: blur(2px);
  z-index: 200;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.15s ease, visibility 0.15s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.modal-card {
  width: min(90dvw, 360px) !important;
}

.modal-title {
  font-size: 0.75rem;
  margin-bottom: 1.4rem;
  letter-spacing: 0.05em;
}

/* Option Row styling */
.option-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  margin-bottom: 1.0rem;
  border-bottom: 2px dashed #EAEAEA;
  padding-bottom: 0.8rem;
}

.option-row:last-of-type {
  border-bottom: none;
  margin-bottom: 0.5rem;
}

.option-row label {
  font-size: 0.45rem;
  text-align: left;
}

/* Buttons inside Options Modal */
.option-toggle, .option-select {
  padding: 0.4rem 0.8rem;
  font-family: inherit;
  font-size: 0.45rem;
  color: var(--retro-black);
  background: var(--retro-gray-bg);
  border: 2px solid var(--retro-black);
  box-shadow: 2px 2px 0px var(--retro-black);
  cursor: pointer;
  outline: none;
  transition: transform 0.05s ease, box-shadow 0.05s ease;
}

.option-toggle:hover, .option-select:hover {
  transform: translateY(-1px);
  box-shadow: 3px 3px 0px var(--retro-black);
}

.option-toggle:active, .option-select:active {
  transform: translateY(2px);
  box-shadow: 0px 0px 0px var(--retro-black);
}

.option-toggle.active, .option-select.active {
  background: var(--ninox-blue);
  color: var(--retro-white);
  transform: translateY(1px);
  box-shadow: 1px 1px 0px var(--retro-black);
}

.option-group {
  display: flex;
  gap: 0.2rem;
}

/* Stage Announcement Banner overlay */
.stage-announcement {
  position: absolute;
  top: 30%;
  font-size: min(5.5vw, 1.3rem);
  color: var(--retro-gold);
  text-shadow: 
    -2px -2px 0 var(--retro-black),  
     2px -2px 0 var(--retro-black),
    -2px  2px 0 var(--retro-black),
     2px  2px 0 var(--retro-black);
  z-index: 50;
  pointer-events: none;
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.8);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
}

.stage-announcement.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1.1);
  animation: stagePulse 1.5s steps(4) forwards;
}

/* Records Color overlay to keep black outline clean */
.records-color {
  color: var(--ninox-blue-light) !important;
}

@keyframes stagePulse {
  0% {
    opacity: 0;
    transform: scale(0.8);
  }
  20% {
    opacity: 1;
    transform: scale(1.1);
  }
  80% {
    opacity: 1;
    transform: scale(1.0);
  }
  100% {
    opacity: 0;
    transform: scale(0.9);
  }
}

/* Cosmetic unlock progress text layout */
.unlock-progress {
  font-size: 0.42rem;
  color: #777777;
  text-transform: uppercase;
  margin-top: 0.2rem;
  margin-bottom: 1.0rem;
  text-align: center;
  width: 100%;
  animation: colorWave 4s steps(4) infinite;
}

@keyframes colorWave {
  0%, 100% { color: #777777; }
  50% { color: var(--ninox-blue); }
}

/* AI Upgrade Terminal Overlay Screen */
.terminal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000000;
  z-index: 250;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.15s ease, visibility 0.15s ease;
}

.terminal-overlay.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* CRT monitor lines effect */
.terminal-overlay::before {
  content: " ";
  display: block;
  position: absolute;
  top: 0; left: 0; bottom: 0; right: 0;
  background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));
  z-index: 2;
  background-size: 100% 4px, 6px 100%;
  pointer-events: none;
}

.terminal-box {
  width: min(90dvw, 420px);
  border: 2px solid #33FF33;
  background: #050E05;
  padding: 1.5rem;
  font-family: 'Press Start 2P', monospace;
  color: #33FF33;
  box-shadow: 0 0 15px rgba(51, 255, 51, 0.3);
  text-shadow: 0 0 2px #33FF33;
  line-height: 1.8;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  text-align: left;
}

.terminal-header {
  font-size: 0.55rem;
  color: #33FF33;
  font-weight: bold;
}

.terminal-line {
  font-size: 0.45rem;
  opacity: 0;
  transform: translateY(2px);
}

.terminal-overlay.active .terminal-line:nth-child(2) {
  animation: termLineFade 0.1s steps(1) 0.2s forwards;
}

.terminal-overlay.active .terminal-line:nth-child(3) {
  animation: termLineFade 0.1s steps(1) 0.5s forwards;
}

.terminal-overlay.active .terminal-line:nth-child(4) {
  animation: termLineFade 0.1s steps(1) 0.8s forwards;
}

.terminal-title {
  font-size: 0.65rem;
  color: #00FFFF; /* Cyber cyan for AI */
  text-shadow: 0 0 4px #00FFFF;
  margin-top: 0.5rem;
  opacity: 0;
  text-align: center;
  letter-spacing: 0.05em;
}

.terminal-overlay.active .terminal-title {
  animation: termTitleFlash 0.3s steps(1) 1.1s forwards, titleBlink 0.8s steps(2) infinite 1.3s;
}

@keyframes termLineFade {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes termTitleFlash {
  to {
    opacity: 1;
  }
}

@keyframes titleBlink {
  50% { opacity: 0.3; }
}

/* Easter Egg "Feeling Lucky?" Button */
.easter-egg-link {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.5rem;
  line-height: 1;
  color: rgba(0, 0, 0, 0.5);
  background: transparent;
  border: 1px solid rgba(0, 0, 0, 0.3);
  padding: 3px 7px;
  text-decoration: none;
  display: inline-block;
  z-index: 100;
  cursor: pointer;
  font-family: var(--font-pixel);
  letter-spacing: 0.5px;
  white-space: nowrap;
  transition: color 0.1s steps(1), border-color 0.1s steps(1), background 0.1s steps(1);
  user-select: none;
}

.easter-egg-link::after {
  content: 'FEELING LUCKY?';
}

.easter-egg-link:hover {
  color: var(--retro-white);
  background: var(--ninox-blue);
  border-color: var(--ninox-blue);
}