:root {
  --bg-gradient: radial-gradient(circle at 50% 50%, #1a1a2e 0%, #0f0f1a 100%);
  --panel-bg: rgba(25, 25, 45, 0.6);
  --panel-border: rgba(255, 255, 255, 0.1);
  --text-primary: #ffffff;
  --text-secondary: #a0a0c0;
  --accent: #00f0ff;
  --accent-hover: #00d0e0;
  --error: #ff4a4a;
}

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

body, html {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: 'Outfit', sans-serif;
  background: var(--bg-gradient);
  color: var(--text-primary);
  /* Prevent pull-to-refresh on mobile */
  overscroll-behavior: none;
  /* Disable text selection */
  user-select: none;
  -webkit-user-select: none;
}

/* Orientation Warning */
#orientation-warning {
  display: none;
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: #000;
  color: #fff;
  z-index: 9999;
  justify-content: center;
  align-items: center;
  text-align: center;
  font-size: 1.5rem;
  padding: 20px;
}

@media screen and (orientation: portrait) {
  #orientation-warning {
    display: flex;
  }
}

/* Login Screen - Glassmorphism */
#login-screen {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10;
  background: url('data:image/svg+xml;utf8,<svg width="100%" height="100%" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)" /></svg>');
}

.glass-panel {
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  border-radius: 20px;
  padding: 40px;
  width: 90%;
  max-width: 400px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 5px;
  text-align: center;
  background: linear-gradient(90deg, #00f0ff, #ff4a4a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 30px;
  font-weight: 600;
}

.input-group {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 600;
}

input {
  width: 100%;
  padding: 14px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  color: #fff;
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}

input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.btn-primary {
  width: 100%;
  padding: 15px;
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 10px;
  font-family: 'Outfit', sans-serif;
  font-size: 1.1rem;
  font-weight: 800;
  cursor: pointer;
  transition: background-color 0.3s, transform 0.1s;
  margin-top: 10px;
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.error-msg {
  color: var(--error);
  font-size: 0.9rem;
  margin-bottom: 15px;
  text-align: center;
  font-weight: 600;
}

/* Game Container */
#game-container {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}