/* Authentication Pages Styles - Matching Leaderboard Design */
:root {
  --primary-color: #bb86fc;
  --primary-hover: #9c4dcc;
  --secondary-color: #03dac6;
  --accent-color: #ff0080;
  --accent-secondary: #00ffe7;
  --background-dark: #121212;
  --background-card: rgba(30, 30, 30, 0.95);
  --background-overlay: rgba(0, 0, 0, 0.8);
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  --border-color: #444444;
  --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-heavy: 0 8px 32px rgba(0, 0, 0, 0.3);
  --border-radius-small: 8px;
  --border-radius-medium: 12px;
  --border-radius-large: 16px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  --error-color: #ff3333;
  --success-color: #4caf50;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  background: linear-gradient(135deg, var(--background-dark) 0%, #1a1a1a 25%, #2d2d2d 50%, #1a1a1a 75%, var(--background-dark) 100%);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
  overflow-x: hidden;
}

/* Animated background effect */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(187, 134, 252, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(3, 218, 198, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 20%, rgba(255, 0, 128, 0.1) 0%, transparent 50%);
  animation: backgroundShift 20s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes backgroundShift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-5%, -5%) scale(1.1); }
  66% { transform: translate(5%, -5%) scale(0.95); }
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  position: relative;
  z-index: 1;
}

/* Header - Matching leaderboard style */
.header {
  background: var(--background-card);
  backdrop-filter: blur(20px);
  border-radius: var(--border-radius-large);
  padding: 24px 32px;
  margin-bottom: 32px;
  box-shadow: var(--shadow-heavy);
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}

.header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
  opacity: 0.5;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.back-button {
  background: rgba(187, 134, 252, 0.15);
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
  padding: 14px 24px;
  border-radius: var(--border-radius-medium);
  cursor: pointer;
  font-size: 0.95em;
  font-weight: 600;
  transition: all var(--transition-normal);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: relative;
  overflow: hidden;
}

.back-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left var(--transition-slow);
}

.back-button:hover {
  background: var(--primary-color);
  color: var(--background-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(187, 134, 252, 0.4);
}

.back-button:hover::before {
  left: 100%;
}

.title-section {
  text-align: center;
  flex: 1;
}

.main-title {
  font-family: "Open Sans", sans-serif;
  color: #ff0080;
  text-shadow: 2px 2px 0 #000, 4px 4px 0 #00ffe7;
  letter-spacing: 2px;
  font-size: 2.5em;
  margin: 0;
  animation: titlePulse 2s ease-in-out infinite;
}

@keyframes titlePulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}

.subtitle {
  font-family: "Open Sans", sans-serif;
  color: #00ffe7;
  font-size: 1.1em;
  letter-spacing: 1px;
  text-shadow: 1px 1px 0 #000;
  margin: 0;
}

.spacer {
  width: 140px; /* Match back button width for centering */
}

/* Main content */
.main-content {
  position: relative;
}

/* Auth container */
.auth-container {
  background: var(--background-card);
  backdrop-filter: blur(20px);
  border-radius: var(--border-radius-large);
  padding: 48px;
  box-shadow: var(--shadow-heavy);
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
  max-width: 480px;
  margin: 0 auto;
  animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.auth-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--primary-color));
  opacity: 0.6;
}

/* Form styles */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95em;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.form-input {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-medium);
  padding: 16px 20px;
  color: var(--text-primary);
  font-size: 1em;
  transition: all var(--transition-normal);
  width: 100%;
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-color);
  background: rgba(187, 134, 252, 0.1);
  box-shadow: 0 0 0 3px rgba(187, 134, 252, 0.2);
  transform: translateY(-2px);
}

.form-input:hover {
  border-color: var(--primary-color);
  background: rgba(255, 255, 255, 0.08);
}

/* Submit button */
.submit-button {
  background: var(--primary-color);
  color: var(--background-dark);
  border: none;
  padding: 18px 32px;
  border-radius: var(--border-radius-medium);
  cursor: pointer;
  font-size: 1.1em;
  font-weight: 700;
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  overflow: hidden;
  margin-top: 8px;
  box-shadow: 0 4px 15px rgba(187, 134, 252, 0.3);
}

.submit-button::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width var(--transition-normal), height var(--transition-normal);
}

.submit-button:hover {
  background: var(--primary-hover);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(187, 134, 252, 0.5);
}

.submit-button:hover::before {
  width: 300px;
  height: 300px;
}

.submit-button:active {
  transform: translateY(-1px);
}

.submit-button:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(187, 134, 252, 0.3);
}

/* Form divider */
.form-divider {
  text-align: center;
  margin: 16px 0;
  position: relative;
}

.form-divider span {
  background: var(--background-card);
  padding: 0 16px;
  color: var(--text-secondary);
  font-size: 0.9em;
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  z-index: 1;
}

.form-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--border-color);
  transform: translateY(-50%);
}

/* Alternative action button */
.alt-action-button {
  background: transparent;
  color: var(--secondary-color);
  border: 2px solid var(--secondary-color);
  padding: 16px 32px;
  border-radius: var(--border-radius-medium);
  cursor: pointer;
  font-size: 1em;
  font-weight: 600;
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-decoration: none;
  display: block;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.alt-action-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--secondary-color);
  transition: left var(--transition-normal);
  z-index: -1;
}

.alt-action-button:hover {
  color: var(--background-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(3, 218, 198, 0.4);
}

.alt-action-button:hover::before {
  left: 0;
}

/* Messages */
.error-message,
.success-message {
  padding: 16px 20px;
  border-radius: var(--border-radius-medium);
  margin-top: 16px;
  font-weight: 500;
  text-align: center;
  animation: slideIn 0.3s ease-out;
}

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

.error-message {
  background: rgba(255, 51, 51, 0.1);
  color: var(--error-color);
  border: 1px solid var(--error-color);
}

.success-message {
  background: rgba(76, 175, 80, 0.1);
  color: var(--success-color);
  border: 1px solid var(--success-color);
}

.hidden {
  display: none !important;
}

/* Loading animation */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: var(--background-dark);
  animation: spin 1s ease-in-out infinite;
  margin-left: 8px;
}

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

/* Responsive design */
@media (max-width: 768px) {
  .container {
    padding: 15px;
  }
  
  .header-content {
    flex-direction: column;
    text-align: center;
  }
  
  .spacer {
    display: none;
  }
  
  .main-title {
    font-size: 2em;
  }
  
  .auth-container {
    padding: 32px 24px;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .submit-button,
  .alt-action-button {
    padding: 14px 24px;
    font-size: 1em;
  }
}