/* New Year's Eve Quiz - Common Styles */

:root {
  --primary: #FFD700;        /* Gold */
  --secondary: #FF6B9D;      /* Pink/Firework color */
  --dark: #1a1a2e;           /* Deep night blue */
  --darker: #16213e;         /* Even darker blue */
  --accent: #00D9FF;         /* Bright cyan */
  --text: #FFFFFF;
  --text-dim: #B8B8B8;
  --success: #4CAF50;
  --error: #FF5252;
  --bg-gradient: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--bg-gradient);
  color: var(--text);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Animated fireworks background */
.fireworks-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.fireworks-bg::before,
.fireworks-bg::after {
  content: '';
  position: absolute;
  width: 3px;
  height: 3px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow:
    100px 100px 0 var(--primary),
    200px 300px 0 var(--secondary),
    300px 150px 0 var(--accent),
    400px 400px 0 var(--primary),
    500px 200px 0 var(--secondary),
    150px 450px 0 var(--accent),
    600px 100px 0 var(--primary),
    50px 250px 0 var(--secondary);
  animation: sparkle 3s ease-in-out infinite;
}

.fireworks-bg::after {
  animation-delay: 1.5s;
  box-shadow:
    550px 150px 0 var(--secondary),
    250px 350px 0 var(--accent),
    350px 200px 0 var(--primary),
    450px 450px 0 var(--secondary),
    550px 250px 0 var(--accent),
    200px 500px 0 var(--primary),
    650px 150px 0 var(--secondary),
    100px 300px 0 var(--accent);
}

@keyframes sparkle {
  0%, 100% {
    opacity: 0;
    transform: scale(0);
  }
  50% {
    opacity: 1;
    transform: scale(1);
  }
}

/* Button styles */
button {
  background: linear-gradient(135deg, var(--primary) 0%, #FFA500 100%);
  color: var(--dark);
  border: none;
  padding: 14px 32px;
  font-size: 18px;
  font-weight: 600;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(255, 215, 0, 0.4);
  min-height: 48px;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 215, 0, 0.6);
}

button:active {
  transform: translateY(0);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Input styles */
input[type="text"] {
  width: 100%;
  padding: 16px;
  font-size: 18px;
  border: 2px solid var(--accent);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
  transition: all 0.3s ease;
  min-height: 48px;
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
}

input[type="text"]::placeholder {
  color: var(--text-dim);
}

/* Error message */
.error-message {
  background: rgba(255, 82, 82, 0.2);
  border: 2px solid var(--error);
  color: var(--error);
  padding: 12px;
  border-radius: 8px;
  margin: 16px 0;
  display: none;
}

.error-message.show {
  display: block;
  animation: slideIn 0.3s ease;
}

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

/* Loading spinner */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: var(--primary);
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}