/* ===================================================================
   Reset Basics and Global Styles
   =================================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  font-family: 'Orbitron', sans-serif;
  color: #e0e0e0;
  overflow-x: hidden;
  background: #000;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

/* ===================================================================
   Background
   =================================================================== */
/* Uses back2.gif as background */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("back2.gif") no-repeat center center fixed;
  background-size: cover;
  opacity: 0.8;
  z-index: -2;
}

/* ===================================================================
   Game Header (Fixed)
   =================================================================== */
#gameHeader {
  position: fixed;
  top: 0;
  width: 100%;
  height: 80px;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2900;
  border-bottom: 2px solid #00eaff;
}

#gameHeader #headerLogo {
  max-height: 60px;
  margin-right: 15px;
  filter: drop-shadow(0 0 10px #00eaff);
}

#gameHeader #headerTitle {
  font-size: 32px;
  color: #00eaff;
  text-shadow: 0 0 20px #00eaff, 0 0 40px #00eaff;
}

/* ===================================================================
   Splash Screen
   =================================================================== */
#splashModal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: black;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3000;
  transition: opacity 1s ease-out, transform 1s ease-out;
}

#splashModal.hidden {
  opacity: 0;
  pointer-events: none;
  transform: scale(0.5);
}

#splashContent {
  text-align: center;
}

#splashLogo {
  max-width: 500px;
  transform: scale(1.2);
  transition: transform 1s ease-out;
  filter: drop-shadow(0 0 10px #00eaff);
  animation: pulseLogo 2s infinite;
}

@keyframes pulseLogo {
  0% { filter: drop-shadow(0 0 5px #00eaff); }
  50% { filter: drop-shadow(0 0 20px #00eaff); }
  100% { filter: drop-shadow(0 0 5px #00eaff); }
}

#splashTitle {
  font-size: 48px;
  margin-top: 20px;
  color: #00eaff;
  text-shadow: 0 0 20px #00eaff, 0 0 40px #00eaff;
  transform: scale(1.2);
  transition: transform 1s ease-out;
  animation: pulseText 2s infinite;
}

@keyframes pulseText {
  0% { text-shadow: 0 0 10px #00eaff; }
  50% { text-shadow: 0 0 30px #00eaff; }
  100% { text-shadow: 0 0 10px #00eaff; }
}

/* ===================================================================
   Instructions Modal
   =================================================================== */
#instructionsModal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2500;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease-out;
}

#instructionsModal:not(.hidden) {
  opacity: 1;
  pointer-events: auto;
}

#instructionsModal.hidden {
  opacity: 0;
  pointer-events: none;
}

#instructionsContent {
  background: rgba(0, 0, 0, 0.95);
  border: 3px solid #00eaff;
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  max-width: 400px;
}

#instructionsContent h2 {
  font-size: 28px;
  margin-bottom: 15px;
  color: #00eaff;
  text-shadow: 0 0 10px #00eaff;
}

#instructionsContent p {
  font-size: 16px;
  margin-bottom: 15px;
  line-height: 1.5;
}

#startGameBtn {
  padding: 10px 20px;
  font-size: 16px;
  border: none;
  border-radius: 8px;
  background: #00eaff;
  color: #000;
  cursor: pointer;
  box-shadow: 0 0 15px #00eaff;
  transition: transform 0.2s, box-shadow 0.3s;
}

#startGameBtn:hover {
  transform: scale(1.1);
  box-shadow: 0 0 25px #00eaff;
}

/* ===================================================================
   DOCS Modal
   =================================================================== */
#docsModal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2600;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease-out;
}

#docsModal:not(.hidden) {
  opacity: 1;
  pointer-events: auto;
}

#docsModal.hidden {
  opacity: 0;
  pointer-events: none;
}

#docsContent {
  background: rgba(0, 0, 0, 0.95);
  border: 3px solid #00eaff;
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  max-width: 400px;
}

#docsContent h2 {
  font-size: 28px;
  margin-bottom: 15px;
  color: #00eaff;
  text-shadow: 0 0 10px #00eaff;
}

#docsContent p {
  font-size: 16px;
  margin-bottom: 15px;
  line-height: 1.5;
}

#closeDocsBtn {
  padding: 10px 20px;
  font-size: 16px;
  border: none;
  border-radius: 8px;
  background: #00eaff;
  color: #000;
  cursor: pointer;
  box-shadow: 0 0 15px #00eaff;
  transition: transform 0.2s, box-shadow 0.3s;
}

#closeDocsBtn:hover {
  transform: scale(1.1);
  box-shadow: 0 0 25px #00eaff;
}

/* ===================================================================
   Canvas
   =================================================================== */
canvas {
  margin-top: 90px; /* Leave space for header */
  border-radius: 10px;
  z-index: 1;
  border: 3px solid #00eaff;
  box-shadow: 0 0 20px #00eaff;
}

/* ===================================================================
   Footer
   =================================================================== */
#gameFooter {
  width: 100%;
  height: 60px;
  background: rgba(0, 0, 0, 0.8);
  border-top: 2px solid #00eaff;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  position: fixed;
  bottom: 0;
  z-index: 2900;
}

#gameFooter span {
  font-size: 16px;
  color: #00eaff;
}

/* ===================================================================
   Buttons (General)
   =================================================================== */
.button {
  padding: 14px 28px;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  background: #00eaff;
  color: #000;
  box-shadow: 0 0 15px #00eaff;
  transition: transform 0.2s, box-shadow 0.3s;
}

.button:hover {
  transform: scale(1.1);
  box-shadow: 0 0 25px #00eaff;
}

/* ===================================================================
   Optional: Crypto Ticker (Example Element)
   =================================================================== */
#crypto-ticker {
  position: fixed;
  top: 80px;
  width: 100%;
  padding: 15px 0;
  background: #111;
  font-size: 20px;
  text-align: center;
  z-index: 1000;
  color: #00eaff;
  animation: tickerPulse 2s infinite;
}

@keyframes tickerPulse {
  0% { text-shadow: 0 0 5px #00eaff; }
  50% { text-shadow: 0 0 20px #00eaff; }
  100% { text-shadow: 0 0 5px #00eaff; }
}

/* ===================================================================
   Responsive Adjustments
   =================================================================== */
@media (max-width: 768px) {
  #headerTitle {
    font-size: 24px;
  }
  #gameHeader {
    height: 60px;
  }
  #headerLogo {
    max-height: 45px;
    margin-right: 10px;
  }
  #splashTitle {
    font-size: 32px;
  }
  #instructionsContent, #docsContent {
    max-width: 90%;
    padding: 15px;
  }
  canvas {
    width: 95%;
    height: auto;
  }
}

@media (max-width: 480px) {
  #headerTitle {
    font-size: 20px;
  }
  #gameHeader {
    height: 50px;
  }
  #headerLogo {
    max-height: 40px;
    margin-right: 8px;
  }
  #splashTitle {
    font-size: 28px;
  }
  #instructionsContent p, #docsContent p {
    font-size: 14px;
  }
  #startGameBtn, #closeDocsBtn {
    font-size: 14px;
    padding: 8px 16px;
  }
}