/* Globalni Stilovi */
:root {
  --bg-color: #05050d;
  --neon-red: #ff0055;
  --neon-blue: #00f0ff;
  --neon-green: #39ff14;
  --neon-purple: #bd00ff;
  --text-color: #ffffff;
  --panel-bg: rgba(10, 10, 25, 0.65);
  --panel-border: rgba(0, 240, 255, 0.25);
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Rajdhani', sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
}

body, html {
  width: 100%;
  height: 100%;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-body);
  overflow: hidden;
  position: relative;
}

/* Zvjezdana Pozadina (CSS padajući efekt) */
#stars-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at bottom, #1b2735 0%, #090a0f 100%);
  z-index: -2;
}

/* Glavni Kontejner */
#app-container {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

/* Ekrani */
.screen {
  position: absolute;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
  z-index: 10;
}

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

/* Glassmorphism Paneli */
.glass-panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.7), 
              0 0 15px 0 rgba(0, 240, 255, 0.15);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 16px;
  padding: 40px;
  width: 480px;
  max-width: 90%;
  text-align: center;
  animation: panelGlow 4s infinite alternate;
}

@keyframes panelGlow {
  0% {
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.7), 0 0 15px 0 rgba(0, 240, 255, 0.1);
    border-color: rgba(0, 240, 255, 0.2);
  }
  100% {
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.7), 0 0 25px 5px rgba(0, 240, 255, 0.25);
    border-color: rgba(0, 240, 255, 0.4);
  }
}

/* Neon Naslovi */
h1 {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: 4px;
  margin-bottom: 5px;
}

.neon-text {
  color: #fff;
  text-shadow: 0 0 5px #fff, 
               0 0 10px var(--neon-purple), 
               0 0 20px var(--neon-purple), 
               0 0 40px var(--neon-purple);
}

.neon-text-blue {
  color: #fff;
  text-shadow: 0 0 5px #fff, 
               0 0 10px var(--neon-blue), 
               0 0 20px var(--neon-blue), 
               0 0 40px var(--neon-blue);
  margin-bottom: 25px;
}

.neon-text-green {
  color: #fff;
  text-shadow: 0 0 5px #fff, 
               0 0 10px var(--neon-green), 
               0 0 20px var(--neon-green);
  font-weight: bold;
}

.neon-text-red {
  color: #fff;
  text-shadow: 0 0 5px #fff, 
               0 0 10px var(--neon-red), 
               0 0 20px var(--neon-red), 
               0 0 40px var(--neon-red);
  margin-bottom: 25px;
}

/* Input Forme */
.input-group {
  text-align: left;
  margin-bottom: 20px;
}

.input-group label {
  display: block;
  font-size: 1rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 8px;
  color: #a0a0c0;
}

.input-group input {
  width: 100%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  padding: 12px 16px;
  color: #fff;
  font-family: var(--font-body);
  font-size: 1.1rem;
  letter-spacing: 1px;
  transition: all 0.3s ease;
}

.input-group input:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--neon-blue);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
}

/* Tipke */
.neon-btn {
  background: transparent;
  border: 2px solid;
  border-radius: 8px;
  color: #fff;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: bold;
  letter-spacing: 2px;
  padding: 12px 24px;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.neon-btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.1);
  transform: translate(-50%, -50%) scale(0);
  border-radius: 50%;
  transition: transform 0.5s ease;
}

.neon-btn:active::after {
  transform: translate(-50%, -50%) scale(1);
  transition: transform 0s;
}

.neon-btn-blue {
  border-color: var(--neon-blue);
  text-shadow: 0 0 5px var(--neon-blue);
  box-shadow: 0 0 5px rgba(0, 240, 255, 0.2), inset 0 0 5px rgba(0, 240, 255, 0.2);
}

.neon-btn-blue:hover {
  background: var(--neon-blue);
  color: #000;
  text-shadow: none;
  box-shadow: 0 0 20px var(--neon-blue);
}

.neon-btn-green {
  border-color: var(--neon-green);
  text-shadow: 0 0 5px var(--neon-green);
  box-shadow: 0 0 5px rgba(57, 255, 20, 0.2), inset 0 0 5px rgba(57, 255, 20, 0.2);
}

.neon-btn-green:hover {
  background: var(--neon-green);
  color: #000;
  text-shadow: none;
  box-shadow: 0 0 20px var(--neon-green);
}

.neon-btn-red {
  border-color: var(--neon-red);
  text-shadow: 0 0 5px var(--neon-red);
  box-shadow: 0 0 5px rgba(255, 0, 85, 0.2), inset 0 0 5px rgba(255, 0, 85, 0.2);
}

.neon-btn-red:hover {
  background: var(--neon-red);
  color: #000;
  text-shadow: none;
  box-shadow: 0 0 20px var(--neon-red);
}

.auth-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  margin-top: 25px;
}

.menu-buttons {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-top: 30px;
}

.menu-buttons.horizontal {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

.pulse {
  animation: btnPulse 1.5s infinite alternate;
}

@keyframes btnPulse {
  0% {
    transform: scale(1);
  }
  100% {
    transform: scale(1.05);
    box-shadow: 0 0 25px var(--neon-green);
  }
}

/* Info Poruke */
#welcome-message {
  font-size: 1.5rem;
  margin-bottom: 10px;
  letter-spacing: 1px;
}

#user-high-score {
  font-size: 1.2rem;
  color: #a0a0c0;
  margin-bottom: 20px;
}

.error-message {
  background: rgba(255, 0, 85, 0.15);
  border: 1px solid var(--neon-red);
  color: #ff99bb;
  padding: 10px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 0.95rem;
  text-align: center;
}

/* Tablica Rang Liste */
.table-container {
  max-height: 300px;
  overflow-y: auto;
  margin: 20px 0 30px 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.25);
}

.mini-table {
  max-height: 150px;
  margin: 15px 0 25px 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th, td {
  padding: 12px 15px;
  font-size: 1.05rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

th {
  background: rgba(0, 240, 255, 0.1);
  color: var(--neon-blue);
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  position: sticky;
  top: 0;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Game HUD */
#game-screen {
  background: transparent;
  flex-direction: column;
}

#hud {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  display: grid;
  grid-template-columns: 180px 100px 1fr 180px;
  align-items: center;
  padding: 0 40px;
  background: linear-gradient(to bottom, rgba(5, 5, 13, 0.9) 0%, rgba(5, 5, 13, 0) 100%);
  z-index: 20;
  pointer-events: none;
}

.hud-item {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.hud-item .label {
  font-size: 0.85rem;
  color: #a0a0c0;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.hud-item .value {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: bold;
}

/* Timer HUD */
.timer-container {
  padding: 0 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.progress-bar-bg {
  width: 100%;
  height: 10px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 5px;
  overflow: hidden;
  box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.progress-bar-fill {
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple));
  box-shadow: 0 0 10px var(--neon-blue);
  transition: width 0.1s linear;
}

/* Životi HUD */
.lives-container {
  align-items: flex-end;
  text-align: right;
}

#hud-lives {
  display: flex;
  gap: 10px;
  height: 30px;
  align-items: center;
}

.life-icon {
  width: 20px;
  height: 25px;
  stroke: var(--neon-blue);
  filter: drop-shadow(0 0 5px var(--neon-blue));
}

/* Canvas igre */
#gameCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Game Over Overlay */
#gameover-screen {
  background: rgba(5, 5, 13, 0.85);
  backdrop-filter: blur(8px);
  z-index: 30;
}

.gameover-stats {
  margin-bottom: 25px;
  font-size: 1.4rem;
}

.gameover-stats p {
  margin-bottom: 10px;
}

#go-new-record {
  font-size: 1.1rem;
  font-weight: bold;
  animation: pulseBlue 1s infinite alternate;
}

@keyframes pulseBlue {
  0% { transform: scale(1); text-shadow: 0 0 5px #fff, 0 0 10px var(--neon-blue); }
  100% { transform: scale(1.05); text-shadow: 0 0 10px #fff, 0 0 20px var(--neon-blue); }
}

/* Pomoćne klase */
.hidden {
  display: none !important;
}

/* Responzivne prilagodbe */
@media (max-width: 768px) {
  #hud {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 10px;
    height: 120px;
    padding: 15px;
  }
  
  .timer-container {
    grid-column: span 2;
    padding: 0;
    margin-top: 5px;
  }

  .lives-container {
    align-items: flex-end;
  }
}