/* Authentication Forms Styles */

.auth-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
}

.auth-container {
    width: 100%;
    max-width: 450px;
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
}

.auth-tabs {
    display: flex;
    background: var(--color-gray-100);
}

.auth-tab {
    flex: 1;
    padding: var(--spacing-lg);
    background: transparent;
    border: none;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-600);
    cursor: pointer;
    transition: all var(--transition-base);
    border-bottom: 3px solid transparent;
}

.auth-tab.active {
    background: var(--color-white);
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.auth-tab:hover:not(.active) {
    color: var(--color-primary);
    background: var(--color-gray-50);
}

.auth-content {
    padding: var(--spacing-2xl);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

.auth-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.auth-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-xs);
}

.form-input {
    width: 100%;
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    color: var(--color-gray-800);
    background: var(--color-white);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

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

.error-message {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-error);
    margin-top: var(--spacing-xs);
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

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

.form-submit {
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.form-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.form-submit.loading {
    position: relative;
    color: transparent;
}

.form-submit.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-white);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.form-footer {
    margin-top: var(--spacing-xl);
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.form-footer a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    transition: color var(--transition-fast);
}

.form-footer a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.form-divider {
    position: relative;
    text-align: center;
    margin: var(--spacing-xl) 0;
}

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

.form-divider span {
    position: relative;
    display: inline-block;
    padding: 0 var(--spacing-md);
    background: var(--color-white);
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
}

/* Social Login Buttons */
.social-login {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.social-login-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-white);
    color: var(--color-gray-700);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
}

.social-login-btn:hover {
    border-color: var(--color-gray-400);
    box-shadow: var(--shadow-sm);
}

.social-login-btn svg {
    width: 20px;
    height: 20px;
}

/* Success Message */
.auth-success {
    padding: var(--spacing-md);
    background: var(--color-success);
    color: var(--color-white);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

/* Password Strength Indicator */
.password-strength {
    margin-top: var(--spacing-xs);
    height: 4px;
    background: var(--color-gray-200);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.password-strength-bar {
    height: 100%;
    width: 0;
    transition: all var(--transition-base);
}

.password-strength-bar.weak {
    width: 33%;
    background: var(--color-error);
}

.password-strength-bar.medium {
    width: 66%;
    background: var(--color-warning);
}

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