/* style.css - Base Styles & Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --main:#3ba2f6;
  --accent: #ff9d00;
  --bg: #fcfcf2;
  --text-dark:  #201f3b;
  --text-light: #555;
  --card: #ffffff;
  --border: #eee;
  --radius: 1.2rem;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --gradient: linear-gradient(135deg, var(--main) 0%, #4ba3f2 100%);
  --success: #4caf50;
  --error: #f44336;
  --warning: #ff9800;
}

body {
  font-family: 'Quicksand', sans-serif;
  background-color: var(--bg);
  color: var(--text-dark);
  line-height: 1.6;
  min-height: 100vh;
  padding: 1rem;
}

/* Typography */
.auth-logo {
  font-family: 'Lexend', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-align: center;
  margin-bottom: 1.5rem;
}

.auth-title {
  font-family: 'Lexend', sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.75rem;
  color: var(--text-dark);
}

.auth-sub {
  text-align: center;
  color: var(--text-light);
  margin-bottom: 2.5rem;
  font-size: 1rem;
}

/* Utility Classes */
.text-center { text-align: center; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }


/* auth.css - Authentication Specific Styles */
.auth-container {
  max-width: 440px;
  margin: 2rem auto;
  padding: 3rem 2.5rem;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

/* Input Groups */
.input-group-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.input-group {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 0.875rem 1rem;
  transition: var(--transition);
}

.input-group:focus-within {
  border-color: var(--main);
  background: var(--card);
}

.input-group.valid {
  border-color: var(--success);
}

.input-group.invalid {
  border-color: var(--error);
}

.input-group i {
  color: var(--text-light);
  margin-right: 0.75rem;
  font-size: 1rem;
  width: 16px;
  text-align: center;
}

.input-group input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-family: 'Quicksand', sans-serif;
  font-size: 1rem;
  color: var(--text-dark);
}

.input-group input::placeholder {
  color: var(--text-light);
  opacity: 0.7;
}

/* Password Toggle */
.password-toggle {
  background: none;
  border: none;
  color: var(--text-light);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 0.25rem;
  transition: var(--transition);
  margin-left: 0.5rem;
}

.password-toggle:hover {
  color: var(--main);
  background: rgba(0, 0, 0, 0.05);
}

/* Username Preview */
.username-preview {
  font-size: 0.875rem;
  color: var(--main);
  font-weight: 500;
  padding: 0.25rem 0.5rem;
}

/* Password Strength */
.password-strength {
  margin-top: 0.5rem;
}

.strength-bar {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.strength-fill {
  height: 100%;
  width: 0%;
  transition: var(--transition);
}

.strength-fill.weak {
  width: 33.33%;
  background: var(--error);
}

.strength-fill.medium {
  width: 66.66%;
  background: var(--warning);
}

.strength-fill.strong {
  width: 100%;
  background: var(--success);
}

.strength-text {
  font-size: 0.75rem;
  color: var(--text-light);
  font-weight: 500;
}

/* Validation Messages */
.validation-message {
  font-size: 0.75rem;
  color: var(--error);
  margin-top: 0.25rem;
  display: none;
}

/* Terms & Conditions - Subtle distinct links */
.terms-group {
  margin: 1rem 0;
}

.terms-checkbox-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.terms-checkbox-custom {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-radius: 0.375rem;
  background: var(--card);
  transition: var(--transition);
  flex-shrink: 0;
  margin-top: 0.125rem;
  position: relative;
  cursor: pointer;
}

.terms-checkbox-custom.checked {
  background: var(--main);
  border-color: var(--main);
}

.terms-checkbox-custom.checked::after {
  content: '✓';
  position: absolute;
  color: white;
  font-size: 0.875rem;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.terms-label {
  font-size: 0.875rem;
  color: var(--text-dark);
  line-height: 1.4;
  cursor: pointer;
  user-select: none;
}

.legal-link {
  color: var(--main);
  text-decoration: none;
  font-weight: 700;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 0.125rem;
  transition: var(--transition);
}

.legal-link:hover {
  color: var(--accent);
  background: rgba(255, 157, 0, 0.1);
  padding: 0.25rem 0.5rem;
  border-radius: 0.375rem;
  margin: 0 -0.5rem;
}
/* Buttons */
button[type="submit"] {
  background: var(--main);
  color: white;
  border: none;
  padding: 1rem 2rem;
  border-radius: var(--radius);
  font-family: 'Lexend', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  margin-top: 0.5rem;
}

button[type="submit"]:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(14, 93, 128, 0.3);
}

button[type="submit"]:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

/* Loading Spinner */
.loading-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top: 2px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  display: inline-block;
  margin-right: 0.5rem;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Auth Messages */
.auth-message {
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
}

.auth-message.success {
  background: rgba(76, 175, 80, 0.1);
  color: var(--success);
  border: 1px solid rgba(76, 175, 80, 0.2);
}

.auth-message.error {
  background: rgba(244, 67, 54, 0.1);
  color: var(--error);
  border: 1px solid rgba(244, 67, 54, 0.2);
}

.auth-message.warning {
  background: rgba(255, 152, 0, 0.1);
  color: var(--warning);
  border: 1px solid rgba(255, 152, 0, 0.2);
}

.auth-message.info {
  background: rgba(14, 93, 128, 0.1);
  color: var(--main);
  border: 1px solid rgba(14, 93, 128, 0.2);
}

/* Links & Navigation */
.auth-alt, .auth-switch {
  text-align: center;
  margin-top: 2rem;
  color: var(--text-light);
  font-size: 0.875rem;
}

.auth-alt a, .auth-switch a {
  color: var(--main);
  text-decoration: none;
  font-weight: 600;
}

.auth-alt a:hover, .auth-switch a:hover {
  text-decoration: underline;
}

.legal-text {
  font-size: 0.75rem;
  color: var(--text-light);
  text-align: center;
  line-height: 1.4;
  margin-top: 1rem;
}

/* Responsive Design */
@media (max-width: 480px) {
  .auth-container {
    margin: 1rem auto;
    padding: 2rem 1.5rem;
  }
  
  body {
    padding: 0.5rem;
  }
  
  .auth-logo {
    font-size: 2rem;
    margin-bottom: 1rem;
  }
  
  .auth-title {
    font-size: 1.5rem;
  }
  
  .auth-form {
    gap: 1.5rem;
  }
}

/* Focus Accessibility */
button:focus-visible,
input:focus-visible,
.password-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Selection */
::selection {
  background: rgba(14, 93, 128, 0.2);
}