/*
 * AILA Tech Solutions - Modern Authentication Pages
 * Beautiful login, signup, and auth-related page styling
 */

/* ================================================
 * MODERN AUTH LAYOUT
 * ================================================ */

.auth-container {
  min-height: 100vh;
  background: linear-gradient(135deg, 
    var(--aila-primary-50) 0%, 
    var(--white) 30%, 
    var(--aila-primary-50) 100%
  );
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  position: relative;
  overflow: hidden;
}

.auth-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 20%, rgba(37, 99, 235, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.auth-card {
  background: var(--white);
  border-radius: var(--border-radius-3xl);
  box-shadow: var(--shadow-2xl);
  padding: var(--space-10);
  width: 100%;
  max-width: 450px;
  position: relative;
  z-index: 1;
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(20px);
}

.auth-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, var(--aila-primary) 0%, var(--aila-primary-dark) 100%);
  border-radius: var(--border-radius-3xl) var(--border-radius-3xl) 0 0;
}

/* ================================================
 * AUTH HEADER
 * ================================================ */

.auth-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.auth-logo {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-4);
  background: linear-gradient(135deg, var(--aila-primary) 0%, var(--aila-primary-dark) 100%);
  border-radius: var(--border-radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--white);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.auth-logo::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transform: rotate(45deg);
  animation: logo-shine 3s infinite;
}

@keyframes logo-shine {
  0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
  50% { transform: translateX(100%) translateY(100%) rotate(45deg); }
  100% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
}

.auth-title {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--gray-900);
  margin-bottom: var(--space-2);
}

.auth-subtitle {
  font-size: var(--text-lg);
  color: var(--gray-600);
  font-weight: var(--font-normal);
}

/* ================================================
 * MODERN AUTH FORMS
 * ================================================ */

.auth-form {
  margin-bottom: var(--space-6);
}

.auth-form-group {
  margin-bottom: var(--space-6);
}

.auth-form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--gray-700);
  margin-bottom: var(--space-2);
}

.auth-form-input {
  width: 100%;
  padding: var(--space-4);
  font-size: var(--text-base);
  border: 2px solid var(--gray-200);
  border-radius: var(--border-radius-xl);
  background: var(--white);
  transition: all var(--transition-normal);
  outline: none;
  position: relative;
}

.auth-form-input:focus {
  border-color: var(--aila-primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
  transform: translateY(-1px);
}

.auth-form-input:hover:not(:focus) {
  border-color: var(--gray-300);
}

.auth-form-input::placeholder {
  color: var(--gray-500);
  font-weight: var(--font-normal);
}

/* Input with icon */
.auth-input-group {
  position: relative;
}

.auth-input-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-500);
  font-size: var(--text-lg);
  transition: color var(--transition-normal);
  z-index: 1;
}

.auth-input-group .auth-form-input {
  padding-left: var(--space-12);
}

.auth-input-group .auth-form-input:focus + .auth-input-icon {
  color: var(--aila-primary);
}

/* Password visibility toggle */
.auth-password-toggle {
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--gray-500);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-normal);
}

.auth-password-toggle:hover {
  color: var(--aila-primary);
  background: var(--aila-primary-50);
}

/* ================================================
 * AUTH BUTTONS
 * ================================================ */

.auth-btn {
  width: 100%;
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  border-radius: var(--border-radius-xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  outline: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.auth-btn-primary {
  background: linear-gradient(135deg, var(--aila-primary) 0%, var(--aila-primary-dark) 100%);
  color: var(--white);
  box-shadow: var(--shadow-lg);
}

.auth-btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--aila-primary-dark) 0%, var(--aila-primary-800) 100%);
  box-shadow: var(--shadow-xl);
  transform: translateY(-2px);
}

.auth-btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-lg);
}

.auth-btn-secondary {
  background: var(--white);
  color: var(--gray-700);
  border: 2px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
}

.auth-btn-secondary:hover:not(:disabled) {
  background: var(--gray-50);
  border-color: var(--gray-300);
  box-shadow: var(--shadow-md);
}

/* Loading state */
.auth-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none !important;
}

.auth-btn-loading {
  position: relative;
  color: transparent !important;
}

.auth-btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: var(--border-radius-full);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ================================================
 * AUTH FOOTER & LINKS
 * ================================================ */

.auth-footer {
  text-align: center;
  padding-top: var(--space-6);
  border-top: 1px solid var(--gray-200);
}

.auth-link {
  color: var(--aila-primary);
  text-decoration: none;
  font-weight: var(--font-medium);
  transition: all var(--transition-normal);
  position: relative;
}

.auth-link:hover {
  color: var(--aila-primary-dark);
}

.auth-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--aila-primary);
  transition: width var(--transition-normal);
}

.auth-link:hover::after {
  width: 100%;
}

.auth-text {
  color: var(--gray-600);
  font-size: var(--text-sm);
  margin-bottom: var(--space-3);
}

/* ================================================
 * FORM VALIDATION STATES
 * ================================================ */

.auth-form-input.error {
  border-color: var(--error);
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1);
}

.auth-form-input.success {
  border-color: var(--success);
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
}

.auth-form-error {
  color: var(--error);
  font-size: var(--text-sm);
  margin-top: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.auth-form-success {
  color: var(--success);
  font-size: var(--text-sm);
  margin-top: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* ================================================
 * SOCIAL LOGIN BUTTONS
 * ================================================ */

.auth-social {
  margin: var(--space-6) 0;
}

.auth-divider {
  position: relative;
  text-align: center;
  margin: var(--space-6) 0;
}

.auth-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gray-300);
}

.auth-divider-text {
  background: var(--white);
  color: var(--gray-500);
  padding: 0 var(--space-4);
  font-size: var(--text-sm);
  position: relative;
}

.auth-social-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.auth-social-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 2px solid var(--gray-200);
  border-radius: var(--border-radius-xl);
  background: var(--white);
  color: var(--gray-700);
  text-decoration: none;
  font-weight: var(--font-medium);
  transition: all var(--transition-normal);
}

.auth-social-btn:hover {
  border-color: var(--gray-300);
  box-shadow: var(--shadow-sm);
  background: var(--gray-50);
}

.auth-social-btn img {
  width: 20px;
  height: 20px;
}

/* ================================================
 * REMEMBER ME & FORGOT PASSWORD
 * ================================================ */

.auth-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-2);
}

.auth-checkbox {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  user-select: none;
}

.auth-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  border: 2px solid var(--gray-300);
  border-radius: var(--border-radius-sm);
  appearance: none;
  cursor: pointer;
  position: relative;
  transition: all var(--transition-normal);
}

.auth-checkbox input[type="checkbox"]:checked {
  background: var(--aila-primary);
  border-color: var(--aila-primary);
}

.auth-checkbox input[type="checkbox"]:checked::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--white);
  font-size: 12px;
  font-weight: bold;
}

.auth-checkbox label {
  font-size: var(--text-sm);
  color: var(--gray-700);
  cursor: pointer;
}

/* ================================================
 * RESPONSIVE AUTH DESIGN
 * ================================================ */

@media (max-width: 480px) {
  .auth-card {
    padding: var(--space-6);
    margin: var(--space-4);
    border-radius: var(--border-radius-2xl);
  }
  
  .auth-logo {
    width: 60px;
    height: 60px;
    font-size: var(--text-xl);
  }
  
  .auth-title {
    font-size: var(--text-2xl);
  }
  
  .auth-subtitle {
    font-size: var(--text-base);
  }
  
  .auth-options {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }
}

/* ================================================
 * OTP VERIFICATION STYLES
 * ================================================ */

.otp-container {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  margin: var(--space-6) 0;
}

.otp-input {
  width: 50px;
  height: 50px;
  text-align: center;
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  border: 2px solid var(--gray-300);
  border-radius: var(--border-radius-lg);
  background: var(--white);
  transition: all var(--transition-normal);
  outline: none;
}

.otp-input:focus {
  border-color: var(--aila-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
  transform: scale(1.05);
}

.otp-input.filled {
  border-color: var(--success);
  background: var(--success-light);
  color: var(--aila-accent-dark);
}

/* ================================================
 * SUCCESS/ERROR MESSAGES
 * ================================================ */

.auth-message {
  padding: var(--space-4);
  border-radius: var(--border-radius-lg);
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: var(--font-medium);
}

.auth-message-success {
  background: var(--success-light);
  color: var(--aila-accent-dark);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.auth-message-error {
  background: var(--error-light);
  color: #991B1B;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.auth-message-info {
  background: var(--info-light);
  color: var(--aila-primary-800);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

/* ================================================
 * ANIMATIONS
 * ================================================ */

.auth-card {
  animation: auth-card-enter 0.6s ease-out;
}

@keyframes auth-card-enter {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.auth-form-group {
  animation: form-group-enter 0.4s ease-out;
  animation-fill-mode: both;
}

.auth-form-group:nth-child(1) { animation-delay: 0.1s; }
.auth-form-group:nth-child(2) { animation-delay: 0.2s; }
.auth-form-group:nth-child(3) { animation-delay: 0.3s; }
.auth-form-group:nth-child(4) { animation-delay: 0.4s; }

@keyframes form-group-enter {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}