/* ===== Common Variables ===== */
:root {
  --primary-gradient: linear-gradient(135deg, #8b5cf6 0%, #3b82f6 100%);
  --bg-dark: #000e30;
  --bg-card: #0a1628;
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --border-color: #27272a;
  --input-bg: #18181b;
  --success-color: #10b981;
  --error-color: #ef4444;
  --warning-color: #f59e0b;
  --sidebar-width: 260px;
}

/* ===== Global Styles ===== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg-dark);
  color: var(--text-primary);
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  min-height: 100vh;
}

/* ===== Layout Containers ===== */
.auth-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  width: 100%;
  max-width: 450px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
}

.auth-header {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-logo {
  width: 80px;
  height: 80px;
  background: var(--primary-gradient);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  font-size: 2rem;
  color: white;
}

.auth-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.auth-subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ===== Forms ===== */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  transition: all 0.3s ease;
}

.form-input:focus {
  outline: none;
  border-color: #8b5cf6;
  box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.1);
}

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

/* ===== Password Handling ===== */
.password-container {
  position: relative;
}

.password-toggle {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  transition: color 0.2s ease;
}

.password-toggle:hover {
  color: var(--text-primary);
}

/* ===== Buttons ===== */
.auth-button {
  width: 100%;
  padding: 12px;
  background: var(--primary-gradient);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: 1rem;
}

.auth-button:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.auth-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.back-button {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s ease;
  margin-right: 1rem;
}

.back-button:hover {
  border-color: #8b5cf6;
  color: var(--text-primary);
}

/* ===== Divider & Social ===== */
.divider {
  display: flex;
  align-items: center;
  margin: 1.5rem 0;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-color);
}

.divider span {
  padding: 0 1rem;
}

.social-buttons {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.social-button {
  flex: 1;
  padding: 10px;
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 14px;
}

.social-button:hover {
  background: var(--border-color);
  border-color: #8b5cf6;
}

/* ===== Footer ===== */
.auth-footer {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.auth-footer a {
  color: #8b5cf6;
  text-decoration: none;
  font-weight: 500;
}

.auth-footer a:hover {
  color: #a78bfa;
}

/* ===== Message States ===== */
.error-message,
.success-message {
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  display: none;
}

.error-message {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--error-color);
  color: var(--error-color);
}

.success-message {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--success-color);
  color: var(--success-color);
}

/* ===== Strength ===== */
.strength-bar {
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    margin: 0.25rem 0;
    overflow: hidden;
}

.strength-fill {
    height: 100%;
    transition: all 0.3s ease;
    border-radius: 2px;
}

.checkbox-container {
    display: flex;
    align-items: flex-start;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    line-height: 1.4;
}

.checkbox-container input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: #8b5cf6;
    margin-top: 2px;
}


/* ===== Spinner ===== */
.loading-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  display: inline-block;
  margin-right: 8px;
}

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

/* ===== Responsive Adjustments ===== */
@media (max-width: 480px) {
  .auth-container {
    padding: 1.5rem;
    margin: 0.5rem;
  }

  .auth-title {
    font-size: 1.5rem;
  }

  .social-buttons {
    flex-direction: column;
  }
}